Nuclear and radiological safety in the substitution process of the fuel HEU to LEU 30/20 in the Reactor TRIGA Mark III of the ININ

International Nuclear Information System (INIS)

Hernandez G, J.

2012-10-01

Inside the safety initiative in the international ambit, with the purpose of reducing the risks associated with the use of high enrichment nuclear fuels (HEU) for different proposes to the peaceful uses of the nuclear energy, Mexico contributes by means of the substitution of the high enrichment fuel HEU for low enrichment fuel LEU 30/20 in the TRIGA Mark III Reactor, belonging to Instituto Nacional de Investigaciones Nucleares (ININ). The conversion process was carried out by means of the following activities: analysis of the proposed core, reception and inspection of the fuel LEU 30/20, the discharge of the fuels of the mixed reactor core, shipment of the fuels HEU fresh and irradiated to the origin country, reload activities with the fuels LEU 30/20 and parameters measurement of the core operation. In order to maintaining the personnel's integrity and infrastructure associated to the Reactor, during the whole process the measurements of nuclear and radiological safety were controlled to detail, in execution with the license requirements of the installation. This work describes the covering activities and radiological inspections more relevant, as well as the measurements of radiological control implemented with base in the estimate of the equivalent dose of the substitution process. (Author)

Adaptations to the perimeter environmental radiation monitoring network at the ININ (conceptual design of case); Adecuaciones a la red de monitoreo de radiacion ambiental perimetral del ININ (diseno conceptual de carcasa)

Energy Technology Data Exchange (ETDEWEB)

Gonzalez P, M. A.

2016-07-01

At present, equipment for the detection of gamma radiation existing in the environment is being developed to protect the population in the Mexico country. The Instituto Nacional de Investigaciones Nucleares (ININ) implemented the gamma radiation monitoring probe (GRMP), which is an instrument used to measure the ionizing radiation in the environment and this in turn communicates with the National Network for Radiological Environmental Monitoring, which detects in real time the gamma radiation. The probes are located in strategic points in the different States of the Mexican Republic and due to their exposure to different types of climate, cause different damages to the case of the GRMP. Due to this situation is that this work is focused on performing different tests to maintain the case in order to validate the problems encountered and investigate new improvements for optimal operation. (Author)

Mobile robots and remote systems in nuclear applications; Robots moviles y sistemas remotos en aplicaciones nucleares

Energy Technology Data Exchange (ETDEWEB)

Segovia de los Rios, J. A.; Benitez R, J. S., E-mail: armando.segovia@inin.gob.m [ININ, Departamento de Automatizacion e Instrumentacion, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

Traditionally, the robots have been used in the industry for the colored to the spray, welding, schemed, assemble and handling of materials. However, these devices have had a deep impact in the nuclear industry where the first objective has been to reduce the exhibition and the personnel contact with radioactive materials. Knowing the utility of the mobile robots and remote systems in nuclear facilities in the world, the Department of Automation and Instrumentation of the Instituto Nacional de Investigaciones Nucleares (ININ) has carried out some researches and applications that they have facilitated the work of the researches and professionals of the ININ involved in the handling of radioactive materials, as the system with monorail for the introduction of irradiated materials in a production cell of Iodine-131 and the robot vehicle for the radioactive materials transport TRASMAR (contraction of Transportacion Asistida de Materiales Radiactivos). (Author)

Practical methods for the functioning evaluation of the whole body counter system Accuscan II of the ININ

International Nuclear Information System (INIS)

Alfaro L, M. M.; Ramirez J, F. J.; Mondragon C, L.

2013-10-01

The whole body counter system Accuscan II of the Instituto Nacional de Investigaciones Nucleares (ININ), was designed and built to quantify and to measure radionuclides fission product as well as gamma emitters, with a maximum sensibility of less than 10 n Ci for cobalt 60 at one time of counting of 5 minutes. The system has two detectors of Ge(Hp) with Beryllium window to a relative efficiency of 25% in a counting configuration of vertical scanning, this configuration gives a plane response of constant efficiency. In this work some practical methods developed in the Internal Dosimetry Laboratory to carry out the functioning evaluation of the whole body counter system Accuscan II of the ININ are described. With the obtained results of this evaluation we can decide fine adjustments will be necessary for the optimization of the equipment operation. The evaluation of this equipment was especially necessary, due to its 21 years-old antiquity and for the gradual changes that has in its functioning. The equipment is intrinsically a gamma spectrometry system and some described experiences could be applied too in other gamma spectrometry systems. (Author)

Key comparison BIPM.RI(I)-K5 of the air kerma standards of the ININ, Mexico and the BIPM in 137Cs gamma radiation

Science.gov (United States)

Kessler, C.; Burns, D. T.; Alvarez Romero, J. T.; De la Cruz Hernández, D.; Cabrera Vertti, M. R.; Tovar-Muñoz, V. M.

2015-01-01

A direct comparison of the standards for air kerma of the Instituto Nacional de Investigaciones Nucleares (ININ), Mexico, and of the Bureau International des Poids et Mesures (BIPM) was carried out in the 137Cs radiation beam of the BIPM in February 2015. The comparison result, evaluated as a ratio of the ININ and the BIPM standards for air kerma, is 1.0048 with a combined standard uncertainty of 2.0 × 10-3. The results are analysed and presented in terms of degrees of equivalence for entry in the BIPM key comparison database. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Verification and software validation for nuclear instrumentation

International Nuclear Information System (INIS)

Gaytan G, E.; Salgado G, J. R.; De Andrade O, E.; Ramirez G, A.

2014-10-01

In this work is presented a Verification Methodology and Software Validation, to be applied in instruments of nuclear use with associate software. This methodology was developed under the auspices of IAEA, through the regional projects RLA4022 (ARCAL XCIX) and RLA1011 (RLA CXXIII), led by Mexico. In the first project three plans and three procedures were elaborated taking into consideration IEEE standards, and in the second project these documents were updated considering ISO and IEC standards. The developed methodology has been distributed to the participant countries of Latin America in the ARCAL projects and two related courses have been imparted with the participation of several countries, and participating institutions of Mexico like Instituto Nacional de Investigaciones Nucleares (ININ), Comision Federal de Electricidad (CFE) and Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS). In the ININ due to the necessity to work with Software Quality Guarantee in systems for the nuclear power plant of the CFE, a Software Quality Guarantee Plan and five procedures were developed in the year 2004, obtaining the qualification of the ININ for software development for the nuclear power plant of CFE. These first documents were developed taking like reference IEEE standards and regulator guides of NRC, being the first step for the development of the methodology. (Author)

Neutron fluence measurement in nuclear facilities.; Medicion de flujos de neutrones en instalaciones nucleares.

Energy Technology Data Exchange (ETDEWEB)

Camacho L, M E

1997-12-01

The objective of present work is to determine the fluence of neutrons in nuclear facilities using two neutron detectors designed and built at Instituto Nacional de Investigaciones Nucleares (ININ), Mexico. The two neutron detectors are of the passive type, based on solid state nuclear tracks detectors (SSNTD). One of the two neutron detectors was used to determine the fluence distribution of the ports at the nuclear research reactor TRIGA Mark III, which belongs to ININ. In these facilities is important to know the neutron fluence distribution characteristic to carried out diverse kind of research activities. The second neutron detector was employed in order to carry out environmental neutron surveillance. The detector has the property to separate the thermal, intermediate and fast components of the neutron fluence. This detector was used to measure the neutron fluence at hundred points around the primary container of the first Mexican Nuclear Power plant `Laguna Verde`. This last detector was also used to determine the neutron fluence in some points of interest, around and inside a low scattering neutron room at the `Centro de Metrologia de Radiaciones Ionizantes` of the ININ, to know the background neutron field produced by the neutron sources used there. The design of the two neutron detector and the results obtained for each of the surveying facilities, are described in this work. (Author).

Thermomechanical evaluation of the fuel assemblies fabricated in the ININ; Evaluacion termomecanica de los ensambles combustibles fabricados en el ININ

Energy Technology Data Exchange (ETDEWEB)

Hernandez L, H.; Ortiz V, J. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2005-07-01

The pilot plant of fuel production of the National Institute of Nuclear Research (ININ) provided to the Laguna Verde Nuclear Power Plant (CNLV) four fuel assemblies type GE9B. The fuel irradiation was carried out in the unit 1 of the CNLV during four operation cycles, highlighting the fact that in their third cycle the four assemblies were placed in the center of the reactor core. In the Nuclear Systems Department (DSN) of the ININ it has been carried out studies to evaluate their neutron performance and to be able to determine the exposure levels of this fuels. Its also outlines the necessity to carry out a study of the thermomechanical behavior of the fuel rods that compose the assemblies, through computational codes that simulate their performance so much thermal as mechanical. For such purpose has been developing in the DSN the FETMA code, together with the codes that compose the system Fuel Management System (FMS), which evaluates the thermomechanical performance of fuel elements. In this work were used the FETMA and FEMAXI codes (developed by JAERI) to study the thermomechanical performance of the fuel elements manufactured in the ININ. (Author)

Project for the adaptation of the Instituto Nacional de Investigaciones Nucleares (ININ) to work as companies incubator, and the business plan as support device in the achievement of successful base technological companies

International Nuclear Information System (INIS)

Rubio A, C.R.

1996-01-01

The purpose of this project is to study an option to reduce technology dependence by taking advantage of the technology based companies generated by the organisms called 'Companies Incubators'. The first point given, is an introduction about incubation applied to national companies and the experiences had about them. There are also suggested some indicators which can be used to develop the incubator tasks. Once it has been defined the topic about incubation in the country, it is provided information about the items determining the company performance within an incubator. In order to do this, it is shown the way the Instituto Nacional de Investigaciones Nucleares can provide not only its facilities but also qualified personnel working for them. Thus it is given a scheme along with a brief organization description and key personnel for the incubator, stating the functions and responsibilities per each one of the persons who are part of the project direction and leading. The bases for the incubator are stated, as well as the requirements to start-up a company being supported by a company incubator. The key points to have a succesful development for the incubator are: the service it can give as well as the guidelines for companies entrance, which are classified into two sorts of customers, external and internal. It is also included a market research about the main product derived from creating a company incubator, as well as the sub-products, the market area, this is directed to the people who will benefit from it, the supply and demand involved with ININ. The main tool used was Business Plan, which defines its importance within the organization and activities guide, it is also included the Business Plan structure

40 years of peaceful uses of nuclear energy in Mexico: historical pamphlet

International Nuclear Information System (INIS)

Instituto Nacional de Investigaciones Nucleares.

1996-01-01

A historical review of the research activities related to nuclear energy that were carried out in Mexico, during the 50'Th, is presented. It is also given a semblance of the main personalities of the scientific and governmental scope that were involved in the creation of the former Comision Nacional de Energia Nuclear (CNEN), in 1956, which was the predecessor of the Instituto Nacional de Investigaciones Nucleares (ININ), as well as some of the first applications of nuclear energy in Mexico. (Author)

The emergency plan of the ININ; El plan de emergencia del ININ

Energy Technology Data Exchange (ETDEWEB)

Ruiz C, M A [ININ, Salazar, Estado de Mexico (Mexico)

1991-07-01

The emergency plan of the ININ, it was elaborated in 1988 and revised by the National Commission of Nuclear Safety and Safeguards (CNSNS) in 1989. At the beginning of 1990 and with the support of the IAEA it was practiced the first revision to the text of this plan, for what the proposal revision is what constitutes the development of this report.

Evaluation system of Research and Development projects and services from ININ; Sistema de Evaluacion de Proyectos de Investigacion y Desarrollo y Servicios del ININ

Energy Technology Data Exchange (ETDEWEB)

Reglero, R [Instituto Nacional de Investigaciones Nucleares, Mexico City (Mexico)

1994-12-31

To make a plan for a project is one thing; to control it are a hundred things at the same time. Because of this fact, the enterprises and Research and Development Institutions have searched better ways to manage this activities. The management system of Research and Development projects and services from ININ, is used as a recording, evaluation tracking, information and control of result instrument for these activities. The need to have update information of different activities in the working areas of ININ, such as: Projects, technical or technological services either internal or external; diffusion programs and human resources training programs; and departmental activities, has taken to the development of uniform methods of recording, evaluation tracking and control of events, which allow the standardization, compilation, analysis and reporting of the results in an easy and quick way. The elaboration of an original scheme for the evaluation system of assessment for Research and Development projects and services was started in July 1988, and the data acquisition was manual. The use of Personal Computers began at 1992. (Author).

Mobile robots and remote systems in nuclear applications

International Nuclear Information System (INIS)

Segovia de los Rios, J. A.; Benitez R, J. S.

2010-01-01

Traditionally, the robots have been used in the industry for the colored to the spray, welding, schemed, assemble and handling of materials. However, these devices have had a deep impact in the nuclear industry where the first objective has been to reduce the exhibition and the personnel contact with radioactive materials. Knowing the utility of the mobile robots and remote systems in nuclear facilities in the world, the Department of Automation and Instrumentation of the Instituto Nacional de Investigaciones Nucleares (ININ) has carried out some researches and applications that they have facilitated the work of the researches and professionals of the ININ involved in the handling of radioactive materials, as the system with monorail for the introduction of irradiated materials in a production cell of Iodine-131 and the robot vehicle for the radioactive materials transport TRASMAR (contraction of Transportacion Asistida de Materiales Radiactivos). (Author)

Adaptations to the perimeter environmental radiation monitoring network at the ININ (conceptual design of case)

International Nuclear Information System (INIS)

Gonzalez P, M. A.

2016-01-01

At present, equipment for the detection of gamma radiation existing in the environment is being developed to protect the population in the Mexico country. The Instituto Nacional de Investigaciones Nucleares (ININ) implemented the gamma radiation monitoring probe (GRMP), which is an instrument used to measure the ionizing radiation in the environment and this in turn communicates with the National Network for Radiological Environmental Monitoring, which detects in real time the gamma radiation. The probes are located in strategic points in the different States of the Mexican Republic and due to their exposure to different types of climate, cause different damages to the case of the GRMP. Due to this situation is that this work is focused on performing different tests to maintain the case in order to validate the problems encountered and investigate new improvements for optimal operation. (Author)

Neutron fluence measurement in nuclear facilities

International Nuclear Information System (INIS)

Camacho L, M.E.

1997-01-01

The objective of present work is to determine the fluence of neutrons in nuclear facilities using two neutron detectors designed and built at Instituto Nacional de Investigaciones Nucleares (ININ), Mexico. The two neutron detectors are of the passive type, based on solid state nuclear tracks detectors (SSNTD). One of the two neutron detectors was used to determine the fluence distribution of the ports at the nuclear research reactor TRIGA Mark III, which belongs to ININ. In these facilities is important to know the neutron fluence distribution characteristic to carried out diverse kind of research activities. The second neutron detector was employed in order to carry out environmental neutron surveillance. The detector has the property to separate the thermal, intermediate and fast components of the neutron fluence. This detector was used to measure the neutron fluence at hundred points around the primary container of the first Mexican Nuclear Power plant 'Laguna Verde'. This last detector was also used to determine the neutron fluence in some points of interest, around and inside a low scattering neutron room at the 'Centro de Metrologia de Radiaciones Ionizantes' of the ININ, to know the background neutron field produced by the neutron sources used there. The design of the two neutron detector and the results obtained for each of the surveying facilities, are described in this work. (Author)

New digital control system for the operation of the Colombian research reactor IAN-R1; Nuevo sistema de control digital para la operacion del reactor de investigacion Colombiano IAN-R1

Energy Technology Data Exchange (ETDEWEB)

Celis del A, L.; Rivero, T.; Bucio, F.; Ramirez, R.; Segovia, A.; Palacios, J., E-mail: lina.celis@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2015-09-15

En 2011, Mexico won the Colombian international tender for the renewal of instrumentation and control of the IAN-R1 Reactor, to Argentina and the United States. This paper presents the design criteria and the development made for the new digital control system installed in the Colombian nuclear reactor IAN-R1, which is based on a redundant and diverse architecture, which provides increased availability, reliability and safety in the reactor operation. This control system and associated instrumentation met all national export requirements, with the safety requirements established by the IAEA as well as the requirements demanded by the Colombian Regulatory Body in nuclear matter. On August 20, 2012, the Colombian IAN-R1 reactor reached its first criticality controlled with the new system developed at Instituto Nacional de Investigaciones Nucleares (ININ). On September 14, 2012, the new control system of the Colombian IAN-R1 reactor was officially handed over to the Colombian authorities, this being the first time that Mexico exported nuclear technology through the ININ. Currently the reactor is operating successfully with the new control system, and has an operating license for 5 years. (Author)

1993 Annual Report ININ; Informe Anual 1993 ININ. Direccion de Investigacion y Desarrollo

Energy Technology Data Exchange (ETDEWEB)

Research and Development Division [Instituto Nacional de Investigaciones Nucleares, Mexico City (Mexico)

1994-12-31

Six are the working areas included in this division; namely: Basic Research, Applied Research, Nuclear Fuel, Nuclear Systems; Control Projects Unit and Safeguards. Each working area has its own projects and departmental activities. Derived from this activities, arise thesis of the different academic degrees and in several subjects of physics, chemistry and nuclear sciences, as well as technological developments and achievements as the recent manufacture of nuclear fuel assemblies to be tested in Laguna Verde Nuclear Power Plant. For each project and departmental activity, aspects as objectives, advance percentage, personnel staff, activities, publications and presentation in congresses are detailed.

Thermomechanical evaluation of the fuel assemblies fabricated in the ININ

International Nuclear Information System (INIS)

Hernandez L, H.; Ortiz V, J.

2005-01-01

The pilot plant of fuel production of the National Institute of Nuclear Research (ININ) provided to the Laguna Verde Nuclear Power Plant (CNLV) four fuel assemblies type GE9B. The fuel irradiation was carried out in the unit 1 of the CNLV during four operation cycles, highlighting the fact that in their third cycle the four assemblies were placed in the center of the reactor core. In the Nuclear Systems Department (DSN) of the ININ it has been carried out studies to evaluate their neutron performance and to be able to determine the exposure levels of this fuels. Its also outlines the necessity to carry out a study of the thermomechanical behavior of the fuel rods that compose the assemblies, through computational codes that simulate their performance so much thermal as mechanical. For such purpose has been developing in the DSN the FETMA code, together with the codes that compose the system Fuel Management System (FMS), which evaluates the thermomechanical performance of fuel elements. In this work were used the FETMA and FEMAXI codes (developed by JAERI) to study the thermomechanical performance of the fuel elements manufactured in the ININ. (Author)

The emergency plan of the ININ

International Nuclear Information System (INIS)

Ruiz C, M.A.

1991-01-01

The emergency plan of the ININ, it was elaborated in 1988 and revised by the National Commission of Nuclear Safety and Safeguards (CNSNS) in 1989. At the beginning of 1990 and with the support of the IAEA it was practiced the first revision to the text of this plan, for what the proposal revision is what constitutes the development of this report

Design, construction and implementation of two redundant circuits of the actuation logic of the protection system of the new control console of TRIGA Mark III reactor of ININ; Diseno, construccion e implementacion de dos circuitos redundantes de la logica de actuacion del sistema de proteccion de la nueva consola de control del reactor Triga Mark III del ININ

Energy Technology Data Exchange (ETDEWEB)

Celestino M, E.

2016-07-01

The Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico has a nuclear reactor type TRIGA Mark III, which was put into operation in 1968. The reactor is used for staff training, radioisotope production, and for research projects of different areas. Over time and due to advances constantly has the electronics industry, maintenance of electronic systems is complicated because basically sometimes components that are no longer manufactured or no longer exist in the market, making it necessary to create projects required modernization. This is the case of the TRIGA reactor of ININ, so the Department of Automation and Instrumentation ININ is undertaking a new project to update the reactor control console. Systems that make up a nuclear reactor protection system (Ps) is relevant, since it is responsible for generating the necessary steps to shut down the reactor to an event of uncertainty which could affect the operators or the installation own actions. As part of the renovation project, this study design is presented to update the Logic of Action (La) of the Ps, whose final design must meet the requirements or specifications set by users and or regulations applicable to nuclear research reactors. One of the requirements established for the proposed new design La, is that it must be implemented with components and devices manufactured with latest technologies, and readily available on the market. The design which is operating currently uses TTL logic whose components are no longer available in the market, so for the new design you decide to use programmable circuits, and specifically, the CPLDs called (by the acronym Complex Programmable Logic Device). These CPLDs are electronic devices that solve complex logic equations and meeting the requirements of functionality and modernity for the new design of the La. In this work the criteria used for the selection of the CPLDs considering the availability and ease of software and hardware to use, and the design and

The tissue bank at the national nuclear research institute in Mexico.

Science.gov (United States)

Esther Martínez-Pardo, María; Lourdes Reyes-Frías, Ma

2003-01-01

The Instituto Nacional de Investigaciones Nucleares (ININ, The National Nuclear Research Institute) received during 1997-1998 strong support of the International Atomic Energy Agency (IAEA), to establish the first and only one tissue bank (BTR ININ tissue bank) in Mexico that uses ionising radiation as sterilising agent. In that time, the BTR staff was trained in different tissue banks in several countries. Basic equipment for tissue processing donated by the IAEA was received in 1998. In July, 1999 the Mexican Health Secretariat gave the Sanitary License No. 1062000001 to the BTR to operate as an official organ and tissue bank. In August, 2001 the ININ and the Hospital Materno Infantil (HMI-ISSEMYM) signed an agreement to collaborate in amnion processing. The hospital is responsible for donor selection, serology tests, tissue procurement and washing, since this hospital is the BTR amnion supplier. The tissues are collected by ININ weekly with complete documentation. The BTR is responsible for processing: cleaning, air drying, packaging, labelling, microbiological control and sterilisation by gamma irradiation. The sterilised tissue is kept under quarantine for 6 months to obtain the results of the donor second serology test. From March to June, 2002 the BTR has processed 347.86 units (50 cm(2) each), is say, 17,393 cm(2). In addition, the pig skin xenograft process has been implemented and a protocol for clinical applications of it is running at the Hospital Central Sur de Alta Especialidad (PEMEX). Also the ININ tissue bank present status and perspectives are described.

Design, construction and implementation of two redundant circuits of the actuation logic of the protection system of the new control console of TRIGA Mark III reactor of ININ

International Nuclear Information System (INIS)

Celestino M, E.

2016-01-01

The Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico has a nuclear reactor type TRIGA Mark III, which was put into operation in 1968. The reactor is used for staff training, radioisotope production, and for research projects of different areas. Over time and due to advances constantly has the electronics industry, maintenance of electronic systems is complicated because basically sometimes components that are no longer manufactured or no longer exist in the market, making it necessary to create projects required modernization. This is the case of the TRIGA reactor of ININ, so the Department of Automation and Instrumentation ININ is undertaking a new project to update the reactor control console. Systems that make up a nuclear reactor protection system (Ps) is relevant, since it is responsible for generating the necessary steps to shut down the reactor to an event of uncertainty which could affect the operators or the installation own actions. As part of the renovation project, this study design is presented to update the Logic of Action (La) of the Ps, whose final design must meet the requirements or specifications set by users and or regulations applicable to nuclear research reactors. One of the requirements established for the proposed new design La, is that it must be implemented with components and devices manufactured with latest technologies, and readily available on the market. The design which is operating currently uses TTL logic whose components are no longer available in the market, so for the new design you decide to use programmable circuits, and specifically, the CPLDs called (by the acronym Complex Programmable Logic Device). These CPLDs are electronic devices that solve complex logic equations and meeting the requirements of functionality and modernity for the new design of the La. In this work the criteria used for the selection of the CPLDs considering the availability and ease of software and hardware to use, and the design and

Computational model of gamma irradiation room at ININ

Science.gov (United States)

Rodríguez-Romo, Suemi; Patlan-Cardoso, Fernando; Ibáñez-Orozco, Oscar; Vergara Martínez, Francisco Javier

2018-03-01

In this paper, we present a model of the gamma irradiation room at the National Institute of Nuclear Research (ININ is its acronym in Spanish) in Mexico to improve the use of physics in dosimetry for human protection. We deal with air-filled ionization chambers and scientific computing made in house and framed in both the GEANT4 scheme and our analytical approach to characterize the irradiation room. This room is the only secondary dosimetry facility in Mexico. Our aim is to optimize its experimental designs, facilities, and industrial applications of physical radiation. The computational results provided by our model are supported by all the known experimental data regarding the performance of the ININ gamma irradiation room and allow us to predict the values of the main variables related to this fully enclosed space to within an acceptable margin of error.

Proposal to improve quality in the sale process of products and services through the implementation of the post-sale service, in the National Institute of Nuclear Research (ININ) for year 2000; Propuesta para mejorar la calidad en el proceso de venta de productos y servicios mediante la implementacion del servicio post-venta en el Instituto Nacional de Investigaciones Nucleares (ININ) para el anio 2000

Energy Technology Data Exchange (ETDEWEB)

Pliego R, M.T

2000-07-01

In the National Institute of Nuclear Research (ININ) it has been able to identify a series of problems in the commercial area just as: lack of publicity, new competitors, customers, loss by the unsatisfied services which are supplied, lack of personnel which dedicates to the sales activity among others. Therefore it has been decided to carry out the implementation of a post-sale service to assure the success of sales through the constant contracting products and services for part of customers totally satisfied, achieving so the fulfilment of the ININ commercialization objectives. Therefore, it was carried out a study which includes: theoretical frame on marketing making emphasis on the management process in this Institute. Also was necessary to know the study object about some aspects such as: its constitution, mission, politics, sales procedures, with the purpose to find their deficiencies and obtaining a scope about ININ products and services which it provides. Therefore was carried out a marketing research with some customers of the Institute obtaining their commentaries. With these analysis elements it has been possible to propose an implementation of a post-sale service and concluding that with this manner, it will be able to assure the complete satisfaction of the customers establishing in the service contract a guarantee with legal sustenance for the fulfilment of this. The services and products offered are: production and sales of radionuclides, radiopharmaceuticals, for diagnostic and theory. Elemental analysis (PIXE, PGE, RbS, NMR,NAA), atomic absorption, X-ray diffraction, X-ray fluorescence, plasma spectroscopy, high resolution mass spectroscopy, gas and mass chromatography, as well as in radiological protection, electron microscopy, irradiation of finished products and raw materials, study of materials and documentation among others. (Author)

Seismic risk assessment in the Mexican Nuclear Center applying the Gumbel-I distribution

International Nuclear Information System (INIS)

Flores R, J.H.; Arguelles F, R.; Camacho L, M.E.; Urrutia F, J.

1997-01-01

A licensing requirement for the operation of nuclear facilities is the performance of different kinds of studies, one of which is seismic risk assessment. This study is useful for the validation of the seismic coefficient applied in the structural design of the facilities. Thus, for the construction of a pilot nuclear fuel plant at Mexico Nuclear Centre of the Instituto Nacional de Investigaciones Nucleares (ININ), was necessary to make such study. The seismicity data for the period between 1912 and 1990 were used and the extreme values Gumbel-I distribution was applied to them. With this, ground acceleration seismic risk maps for recurrence periods of 1, 25 and 50 years were drawn up, showing maximum values of 1.2, 4.25, and 5.0 gales, respectively. (Author)

Modernization of the facilities of the TRIGA Mark III reactor of ININ; Modernizacion de las instalaciones del reactor TRIGA Mark III del ININ

Energy Technology Data Exchange (ETDEWEB)

Mendez T, D.; Flores C, J., E-mail: dario.mendez@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2016-09-15

The TRIGA Mark III reactor of the Instituto Nacional de Investigaciones Nucleares (ININ) has been in operation since 1968 under strict maintenance and component replacement programs, which has allowed its safe operation during this time. Under this scheme, the reactor was operating under suitable conditions, taking into account the different requests for operation that were received for the samples irradiation for the radioisotopes production such as the Sm-153, personnel training, basic research, archaeology and environmental studies and nuclear chemistry of the elements. However, a modernization program of its components and laboratories was required, in order to improve safety in the operation of the same and to increase its use in the analysis of samples by neutron activation and in the training of personnel. This program known as Modernization Program of the Reactor Facilities, was proposed alongside the project to replace high-enrichment fuels with low-enrichment fuels at the end of 2011 and early 2012. The central aspects of this program are described in this work, grouped into generic topics that include instrumentation and control, the radiological monitoring system of the area, the cooling system, the ventilation system, the neutron activation analysis laboratory, the manufacture of graphite elements, inspection submersible system of the pool, temporary storage system for irradiated fuels, traveling crane, Reactor support laboratories and technical meetings, courses and seminars for reactor personnel and associated groups. It also describes some of the most relevant components required for each system and the progress that is made in each one of them. As a fundamental result of the implementation of this Modernization Program of the Reactor Facilities, there has been a substantial improvement in the performance of the systems and components of its facilities, in the reliability of its operation and in the safety of the same. (Author)

Work report 1992-1993 Instituto Nacional de Investigaciones Nucleares

International Nuclear Information System (INIS)

Instituto Nacional de Investigaciones Nucleares.

1993-01-01

During the term encompassed by this report, the ININ carried out the relevant actions in order to make progress in the achievement of the goals and objectives established in the 1990-1994 mid-term institutional program. The report is formed by 3 sections and one appendix: The first section is entitled: T he importance of the entity in the national economic context and the para state industrial sector (1992-1993) , which presents an approach of the functions taken on and performed by the institution among which the support given to the Central of Laguna Verde (CLV), from the Federal Electricity Commission, is stressed through qualification of personnel, processes and equipment and the operation of the pilot plant for the manufacture of fuel assemblies; technical courses; studies on the management of the nuclear fuel; classification of the equipment and components conferred to nuclear security functions; computer systems development; Reactor engineering; instrumentation and technical maintenance for radiological protection during the operation of unit I. The Institute conformed great part of the basic and applied research projects in several disciplines related to nuclear sciences. According to the indicative actions of the 1990-1994 national program for energy modernization, the priority activities of the Institute were oriented to the integral development of nuclear fuels; contribution to the security in nuclear and radiative facilities; collection, treatment and storage of radiative disposal; the development of nuclear techniques applied in the health, agricultural and industrial sectors, are some of the points considered in the second section. Regarding the structural change, progress and results for the 1992-1993 term considered in the third section, it is established that the Institute continued with its actions of the modernization program established for the term and the beginning of the study of integral restructuring, to identify the new fields of action

Criticality and shielding calculations for containers in dry of spent fuel of TRIGA Mark III reactor of ININ; Calculos de criticidad y blindaje para contenedores en seco de combustible gastado del reactor Triga Mark III del ININ

Energy Technology Data Exchange (ETDEWEB)

Barranco R, F.

2015-07-01

In this thesis criticality and shielding calculations to evaluate the design of a container of dry storage of spent nuclear fuel generated in research reactors were made. The design of such container was originally proposed by Argentina and Brazil, and the Instituto Nacional de Investigaciones Nucleares (ININ) of Mexico. Additionally, it is proposed to modify the design of this container to store spent fuel 120 that are currently in the pool of TRIGA Mark III reactor, the Nuclear Center of Mexico and calculations and analyzes are made to verify that the settlement of these fuel elements is subcritical limits and dose rates to workers and the general public are not exceeded. These calculations are part of the design criteria for security protection systems in dry storage system (Dss for its acronym in English) proposed by the Nuclear Regulatory Commission (NRC) of the United States. To carry out these calculations simulation codes of Monte Carlo particle transport as MCNPX and MCNP5 were used. The initial design (design 1) 78 intended to store spent fuel with a maximum of 115. The ININ has 120 fuel elements and spent 3 control rods (currently stored in the reactor pool). This leads to the construction of two containers of the original design, but for economic reasons was decided to modify (design 2) to store in a single container. Criticality calculations are performed to 78, 115 and fresh fuel elements 124 within the container, to the two arrangements described in Chapter 4, modeling the three-dimensional geometry assuming normal operating conditions and accident. These calculations are focused to demonstrate that the container will remain subcritical, that is, that the effective multiplication factor is less than 1, in particular not greater than 0.95 (as per specified by the NRC). Spent fuel 78 and 124 within the container, both gamma radiation to neutron shielding calculations for only two cases were simulated. First actinides and fission products generated

Development of the user interface for visualization of the auxiliary systems of the TRIGA Mark III nuclear reactor; Desarrollo de la interface de usuario para la visualizacion de los sistemas auxiliares del reactor nuclear Triga Mark III

Energy Technology Data Exchange (ETDEWEB)

Merced D, J. E.

2016-07-01

The Instituto Nacional de Investigaciones Nucleares (ININ) has a nuclear research reactor type swimming pool with movable core cooled and moderate with light water. The nominal maximum power of the reactor is 1 MW in steady-state operation and can be pulsed at a maximum power of 2,000 MW for approximately 10 milliseconds. This reactor is mainly used to study the effects of radiation on various materials and substances. In 2001 the new control console of the nuclear reactor was installed which was based on two digital computers, one computer controls the bar management mechanisms and the other the systems to the reactor operator. In 2004, the control computer was replaced and the software was updated. Within the modernization and/or updating of the TRIGA Mark III reactor of ININ, is intended (theme of this work) to develop the user interface for the visualization of the auxiliary systems, through a Man-Machine Interface module for the renewal process of the control console. The man-machine interface system to be developed will have communication with the programmable logic controllers that will be constantly monitored and controlled to obtain real-time variables of the reactor behavior. (Author)

Development of the user interface for visualization of the auxiliary systems of the TRIGA Mark III nuclear reactor

International Nuclear Information System (INIS)

Merced D, J. E.

2016-01-01

The Instituto Nacional de Investigaciones Nucleares (ININ) has a nuclear research reactor type swimming pool with movable core cooled and moderate with light water. The nominal maximum power of the reactor is 1 MW in steady-state operation and can be pulsed at a maximum power of 2,000 MW for approximately 10 milliseconds. This reactor is mainly used to study the effects of radiation on various materials and substances. In 2001 the new control console of the nuclear reactor was installed which was based on two digital computers, one computer controls the bar management mechanisms and the other the systems to the reactor operator. In 2004, the control computer was replaced and the software was updated. Within the modernization and/or updating of the TRIGA Mark III reactor of ININ, is intended (theme of this work) to develop the user interface for the visualization of the auxiliary systems, through a Man-Machine Interface module for the renewal process of the control console. The man-machine interface system to be developed will have communication with the programmable logic controllers that will be constantly monitored and controlled to obtain real-time variables of the reactor behavior. (Author)

Criticality and shielding calculations for containers in dry of spent fuel of TRIGA Mark III reactor of ININ

International Nuclear Information System (INIS)

Barranco R, F.

2015-01-01

In this thesis criticality and shielding calculations to evaluate the design of a container of dry storage of spent nuclear fuel generated in research reactors were made. The design of such container was originally proposed by Argentina and Brazil, and the Instituto Nacional de Investigaciones Nucleares (ININ) of Mexico. Additionally, it is proposed to modify the design of this container to store spent fuel 120 that are currently in the pool of TRIGA Mark III reactor, the Nuclear Center of Mexico and calculations and analyzes are made to verify that the settlement of these fuel elements is subcritical limits and dose rates to workers and the general public are not exceeded. These calculations are part of the design criteria for security protection systems in dry storage system (Dss for its acronym in English) proposed by the Nuclear Regulatory Commission (NRC) of the United States. To carry out these calculations simulation codes of Monte Carlo particle transport as MCNPX and MCNP5 were used. The initial design (design 1) 78 intended to store spent fuel with a maximum of 115. The ININ has 120 fuel elements and spent 3 control rods (currently stored in the reactor pool). This leads to the construction of two containers of the original design, but for economic reasons was decided to modify (design 2) to store in a single container. Criticality calculations are performed to 78, 115 and fresh fuel elements 124 within the container, to the two arrangements described in Chapter 4, modeling the three-dimensional geometry assuming normal operating conditions and accident. These calculations are focused to demonstrate that the container will remain subcritical, that is, that the effective multiplication factor is less than 1, in particular not greater than 0.95 (as per specified by the NRC). Spent fuel 78 and 124 within the container, both gamma radiation to neutron shielding calculations for only two cases were simulated. First actinides and fission products generated

Public perception of nuclear power in Mexico after Fukushima; Percepcion publica de la energia nuclear en Mexico despues de Fukushima

Energy Technology Data Exchange (ETDEWEB)

Palacios, J. C.; Alonso, G.; Ramirez, R., E-mail: javier.palacios@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2015-09-15

This section presents some of the results of four studies on international public opinion about nuclear energy, the first one made several years before the Fukushima accident, conducted in 2005 by the IAEA through the company Globe Scan Inc. The second study was conducted by the same company in 2011 a few months after the Fukushima accident, including also corresponding results to two studies conducted by the British firm Ipsos Mori (of years 2011 and 2012 respectively). Finally three studies conducted by the Instituto Nacional de Investigaciones Nucleares (ININ) in 2006, 2008 and 2013 are presented. From the results of these studies was determined that the Fukushima accident itself had a negative effect on public opinion in Mexico, as throughout the world, but this trend is reversing. Also it found that public opinion in Mexico on using reactors to generate electricity is favorable, although not still has much support from the government for the construction of new nuclear power plants. (Author)

Modernization of the facilities of the TRIGA Mark III reactor of ININ

International Nuclear Information System (INIS)

Mendez T, D.; Flores C, J.

2016-09-01

The TRIGA Mark III reactor of the Instituto Nacional de Investigaciones Nucleares (ININ) has been in operation since 1968 under strict maintenance and component replacement programs, which has allowed its safe operation during this time. Under this scheme, the reactor was operating under suitable conditions, taking into account the different requests for operation that were received for the samples irradiation for the radioisotopes production such as the Sm-153, personnel training, basic research, archaeology and environmental studies and nuclear chemistry of the elements. However, a modernization program of its components and laboratories was required, in order to improve safety in the operation of the same and to increase its use in the analysis of samples by neutron activation and in the training of personnel. This program known as Modernization Program of the Reactor Facilities, was proposed alongside the project to replace high-enrichment fuels with low-enrichment fuels at the end of 2011 and early 2012. The central aspects of this program are described in this work, grouped into generic topics that include instrumentation and control, the radiological monitoring system of the area, the cooling system, the ventilation system, the neutron activation analysis laboratory, the manufacture of graphite elements, inspection submersible system of the pool, temporary storage system for irradiated fuels, traveling crane, Reactor support laboratories and technical meetings, courses and seminars for reactor personnel and associated groups. It also describes some of the most relevant components required for each system and the progress that is made in each one of them. As a fundamental result of the implementation of this Modernization Program of the Reactor Facilities, there has been a substantial improvement in the performance of the systems and components of its facilities, in the reliability of its operation and in the safety of the same. (Author)

Experiences in the continuous improvement of quality assurance of the dosimetry services of SLDC-MD-ININ; Experiencias en la mejora continua del aseguramiento de la calidad de los servicios de dosimetria de LSCD-ME-ININ

Energy Technology Data Exchange (ETDEWEB)

Tovar M, V. M.; Vergara M, F.; Perez M, V.; Anaya M, R.; Cejudo A, J.; Alvarez R, J. T.; Arenas O, A.; Cruz F, C., E-mail: victor.tovar@inin.gob.m [ININ, Departamento de Metrologia de Radiaciones Ionizantes, Laboratorio Secundario de Calibracion Dosimetrica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-09-15

From 2003 the Secondary Laboratory of Dosimetric Calibration (SLDC) of Metrology Department of Ionizing Radiations (MD), has complemented the Quality Manual of National Institute of Nuclear Research (ININ) according to the standard ISO 9001: 2000. However, due to that the National Center of Metrology of Mexico delegates its functions in the dosimetry and activity area for the field of the ionizing radiations to the ININ: one of the requirements so that the ININ has been designated as -Declared Institute- before the International Office of Weights and Measurements, it is to demonstrate before the Inter-American System of Metrology that the quality system of the SLDC fulfills the standard ISO/IEC 17025: 2005, satisfied this requirement the Inter-American System of Metrology in their meeting of evaluation of quality systems, Ottawa (2007) grants a certification document to the SLDC that guarantees their capacities of calibration measurements for dosimetry services. Concretely, inside the standard activities ISO 9000 with respect to the point 8 on measurement, analysis and improvement the Management of Quality Assurance of ININ carries out at year two interns auditing and every month is given continuation to the non conformities detected in the procedures that support the services of the SLDC for dosimetry with purposes of radiological protection and clinical dosimetry. (Author)

Contributions of the National Institute of Nuclear Research to the advance of Science and Technology in Mexico. Commemorative edition 2010

International Nuclear Information System (INIS)

Duque M, G.; Jimenez R, M.; Monroy G, F.; Romero H, S.; Serment G, J.

2010-01-01

From the second decade of the X X century the applications of the nuclear energy have been important part of the scientific and technological patrimony in Mexico. Records exist with regard to the use of the radioisotopes and the radiations in our country in that time, and in a formal way until the year of 1950, in a process that culminates with the creation of the Comision Nacional de Energia Nuclear (CNEN. January 1, 1956). In January 12, 1972 were published the Organic Law that created to the Instituto Nacional de Energia Nuclear, being responsible for the works that the CNEN developed. The current Instituto Nacional de Investigaciones Nucleares (ININ) was constituted starting from the Regulation Law of the constitutional Article 27 in nuclear matter of January 26, 1979, abrogated and substituted by the Law in force of February 4, 1985. In this lapse they were undertaken multitude of projects with results and diverse achievements. From their creation, the mission of the ININ and the previous institutions has been to realize research in science and nuclear technology, to promote their peaceful uses and to diffuse the achieved advances, always searching for to link them to the economic, social, scientific and technological development of the country. In this occasion with the purpose of participating in the commemoration of the bicentennial of the independence and centennial of the Mexican revolution in our country, the ININ decided to publish this work, directed to a wide public, with the intention of providing a vision the most complete and appropriate possible of the activities in research and technology that it is carries out at the moment. This work also seeks to be a diffusion instrument of the tasks that they are carried out in the institute, in diverse subjects as: the basic research, the nuclear applications in the health, the agriculture and the industry, the studies on the contamination and the environment; the dosimetry; the radiological protection; as

Public perception of nuclear power in Mexico after Fukushima

International Nuclear Information System (INIS)

Palacios, J. C.; Alonso, G.; Ramirez, R.

2015-09-01

This section presents some of the results of four studies on international public opinion about nuclear energy, the first one made several years before the Fukushima accident, conducted in 2005 by the IAEA through the company Globe Scan Inc. The second study was conducted by the same company in 2011 a few months after the Fukushima accident, including also corresponding results to two studies conducted by the British firm Ipsos Mori (of years 2011 and 2012 respectively). Finally three studies conducted by the Instituto Nacional de Investigaciones Nucleares (ININ) in 2006, 2008 and 2013 are presented. From the results of these studies was determined that the Fukushima accident itself had a negative effect on public opinion in Mexico, as throughout the world, but this trend is reversing. Also it found that public opinion in Mexico on using reactors to generate electricity is favorable, although not still has much support from the government for the construction of new nuclear power plants. (Author)

Experiences in the continuous improvement of quality assurance of the dosimetry services of SLDC-MD-ININ

International Nuclear Information System (INIS)

Tovar M, V. M.; Vergara M, F.; Perez M, V.; Anaya M, R.; Cejudo A, J.; Alvarez R, J. T.; Arenas O, A.; Cruz F, C.

2010-09-01

From 2003 the Secondary Laboratory of Dosimetric Calibration (SLDC) of Metrology Department of Ionizing Radiations (MD), has complemented the Quality Manual of National Institute of Nuclear Research (ININ) according to the standard ISO 9001: 2000. However, due to that the National Center of Metrology of Mexico delegates its functions in the dosimetry and activity area for the field of the ionizing radiations to the ININ: one of the requirements so that the ININ has been designated as -Declared Institute- before the International Office of Weights and Measurements, it is to demonstrate before the Inter-American System of Metrology that the quality system of the SLDC fulfills the standard ISO/IEC 17025: 2005, satisfied this requirement the Inter-American System of Metrology in their meeting of evaluation of quality systems, Ottawa (2007) grants a certification document to the SLDC that guarantees their capacities of calibration measurements for dosimetry services. Concretely, inside the standard activities ISO 9000 with respect to the point 8 on measurement, analysis and improvement the Management of Quality Assurance of ININ carries out at year two interns auditing and every month is given continuation to the non conformities detected in the procedures that support the services of the SLDC for dosimetry with purposes of radiological protection and clinical dosimetry. (Author)

Radioactive materials system of the ININ (SMATRAD); Sistema de Materiales Radiactivos del ININ (SMATRAD)

Energy Technology Data Exchange (ETDEWEB)

Rivero G, E.; Ledezma F, L.E.; Valdivia R, D. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico)

2007-07-01

The radioactive iodine (I-131) it is an isotope created starting from the iodine with the purpose of emitting radiation for medicinal use. When a small dose of I-131 is ingested, this is absorbed in the sanguine torrent in the gastrointestinal tract (Gl) and it is concentrated by the blood on the thyroid gland, where it begins to destroy the cells. This treatment makes that the activity of the thyroid decreases in great measure and in some cases it can transform an hyperactive thyroid in a hypoactive thyroid which requires additional treatments. The sodium iodide I-131 is one of the products elaborated and marketed by the ININ in the Radiopharmaceuticals and Radioisotopes production plant, dependent of the Radioactive Material Department of the Nuclear Applications in the Health Management. The Plant is the only one in its type that exists in the country, it has Sanitary License and Good Practice of Production Certificate, emitted by the Secretary of Health, and licenses for the handling and the transportation of radioactive material, sent by the National Commission of Nuclear Safety and Safeguards. Also, the quality system of the plant is certified under the ISO 9001:2000 standard. (Author)

TL dosimetry in the new Tandetron ion accelerator site of the National Institute of Nuclear Research (ININ); Dosimetria TL en el area del nuevo acelerador de iones Tandetron del ININ

Energy Technology Data Exchange (ETDEWEB)

Valdovinos A, M.; Gonzalez M, P.R. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

2000-07-01

The National Institute of Nuclear Research (ININ) acquired a positive ions accelerator type Tandetron 2 MV of the dutch company High Voltage Engineering, Europe B.V., which was finished its installation this year (2000) in an already existing building in the Dr. Nabor Carrillo Flores Nuclear Centre, where it was prepared for the following purposes: the accelerator will be used to realize research through X-ray emission induced by charged particles, Rutherford backscattering analysis, nuclear reaction analysis, gamma ray emission induced by charged particles, resonant dispersion analysis, elastic backward detection analysis and by particle canalization analysis. The accelerator consists of an injection system with two ion sources, ion accelerator tank with voltage in terminal at 2 MV, recovery and recirculation system of charge interchange gas, iman selector analyzer system and with high energy focussing, control system through computer and management and recovery of isolator gas system. For the realization of operation tests of this accelerator, it was had the license authorizing by the National Commission of Nuclear Safety and Safeguards (CNSNS). During the test stage Tl dosemeters were arranged in the Tandetron accelerator area, and also in direction to the beam outlet. In this work, are presented the obtained results of the measurement of radiation levels, as in the area as in the beam outlet. (Author)

Calculation of neutron activation of control rods of a nuclear reactor, using MCNP5; Calculo de activacion neutronica de barras de control de un reactor nuclear, utilizando MCNP5

Energy Technology Data Exchange (ETDEWEB)

Pena V, J.D.

2016-07-01

The control rods of a nuclear reactor are activated by neutron irradiation. The generated activity produces a dose around the rod which is irrelevant inside the reactor, but significant when the rod is withdrawn and placed in a storage pool, because this dose is a potential risk to the surrounding personnel. On the other hand, most of the activation occurs in the stainless steel components of the rod. The Monte Carlo model can reliably determine the activation produced in a stainless steel part exposed to a neutron flux in a reactor and the dose measurement around this part. This thesis presents the Monte Carlo models developed for the activation of the control rods of the TRIGA Mark III reactor of Instituto Nacional de Investigaciones Nucleares (ININ) when only standard fuel was available. Therefore, the validations of the Monte Carlo models are reliable. (Author)

Centro de Investigaciones Nucleares Aplicadas a la Agricultura (CINAGRI). Venezuela. Final report of the projects VEN/86/007 and VEN/5/009

International Nuclear Information System (INIS)

Gil, J.L.

1992-01-01

The summary of the technical activities carried out on the project ''Centro de Investigaciones Nucleares Aplicadas a la Agricultura'' (CINAGRI) is presented. The objectives of this project are to establish nuclear and biotechnology techniques, practices with a view to increasing agriculture and live-stock productivity, and to transfer this technology to farmers

TL dosimetry in the new Tandetron ion accelerator site of the National Institute of Nuclear Research (ININ)

International Nuclear Information System (INIS)

Valdovinos A, M.; Gonzalez M, P.R.

2000-01-01

The National Institute of Nuclear Research (ININ) acquired a positive ions accelerator type Tandetron 2 MV of the dutch company High Voltage Engineering, Europe B.V., which was finished its installation this year (2000) in an already existing building in the Dr. Nabor Carrillo Flores Nuclear Centre, where it was prepared for the following purposes: the accelerator will be used to realize research through X-ray emission induced by charged particles, Rutherford backscattering analysis, nuclear reaction analysis, gamma ray emission induced by charged particles, resonant dispersion analysis, elastic backward detection analysis and by particle canalization analysis. The accelerator consists of an injection system with two ion sources, ion accelerator tank with voltage in terminal at 2 MV, recovery and recirculation system of charge interchange gas, iman selector analyzer system and with high energy focussing, control system through computer and management and recovery of isolator gas system. For the realization of operation tests of this accelerator, it was had the license authorizing by the National Commission of Nuclear Safety and Safeguards (CNSNS). During the test stage Tl dosemeters were arranged in the Tandetron accelerator area, and also in direction to the beam outlet. In this work, are presented the obtained results of the measurement of radiation levels, as in the area as in the beam outlet. (Author)

Calculation of neutron activation of control rods of a nuclear reactor, using MCNP5

International Nuclear Information System (INIS)

Pena V, J.D.

2016-01-01

The control rods of a nuclear reactor are activated by neutron irradiation. The generated activity produces a dose around the rod which is irrelevant inside the reactor, but significant when the rod is withdrawn and placed in a storage pool, because this dose is a potential risk to the surrounding personnel. On the other hand, most of the activation occurs in the stainless steel components of the rod. The Monte Carlo model can reliably determine the activation produced in a stainless steel part exposed to a neutron flux in a reactor and the dose measurement around this part. This thesis presents the Monte Carlo models developed for the activation of the control rods of the TRIGA Mark III reactor of Instituto Nacional de Investigaciones Nucleares (ININ) when only standard fuel was available. Therefore, the validations of the Monte Carlo models are reliable. (Author)

Research and service capabilities of the National Nuclear Forensic Research Laboratory

International Nuclear Information System (INIS)

Romero G, E. T.; Hernandez M, H.; Flores C, J.; Paredes G, L. C.

2016-09-01

According to the recommendations of the International Atomic Energy Agency, Mexico is taking steps to combat illicit trafficking in nuclear material. The creation of a National Nuclear Forensic Research Laboratory (Lanafonu, acronym in Spanish) has been assigned to the Instituto Nacional de Investigaciones Nucleares (ININ, Mexico) in 2014. The objectives of this Laboratory are: to combat illicit trafficking in nuclear materials, to optimize scientific processes and techniques used to analyze nuclear materials (orphans or radioactive sources), environmental and potential biological sources as a result of the handling, transport and final storage. At present, the Lanafonu facilities are focused on the optimization of emergency and routine protocols for measuring radioisotopes in environmental and biological samples using inductive coupling mass spectrometer with magnetic sector. The main activities are: i) optimization of the methods for measuring the isotopes of Pu by alpha-spectrometry, Icp-SFMS and AMS (accelerator mass spectrometry), ii) development or radiochemical methods for routine situations and nuclear emergencies, iii) participation in the scientific technical commission on nuclear forensic science, iv) participation in international intercomparison exercises to optimize and validate methods, and v) consolidation of Lanafonu in Mexico and the IAEA. (Author)

Participation of the ININ in the activities of radioactive waste management of the Laguna Verde Central; Participacion del ININ en las actividades de gestion de desechos radiactivos de la Central Laguna Verde

Energy Technology Data Exchange (ETDEWEB)

Medrano L, M.; Rodriguez C, C.; Linares R, D. [ININ, Gerencia Subsede Sureste (Mexico); Ramirez G, R.; Zarate M, N. [Central Laguna Verde, CFE (Mexico)]. e-mail: maam@nuclear.inin.mx

2006-07-01

From the beginning of the operation of the Laguna Verde Central (CLV) the National Institute of Nuclear Research (ININ) has come supporting the CLV in the activities of administration of the humid and dry radioactive waste generated by the operation of the two units of the CLV, from the elaboration of procedures to the temporary storage in site, the implementation of a program of minimization and segregation of dry solid wastes, until the classification of the lots of humid waste and bulk dry wastes. In this work the description of the management activities of radioactive wastes carried out by the ININ in the facilities of the CLV to the date is presented, as well as some actions that they are had drifted in the future near, among those that it stands out the determination of the total alpha activity in humid samples by means of scintillation analysis. (Author)

Radioactive materials system of the ININ (SMATRAD)

International Nuclear Information System (INIS)

Rivero G, E.; Ledezma F, L.E.; Valdivia R, D.

2007-01-01

The radioactive iodine (I-131) it is an isotope created starting from the iodine with the purpose of emitting radiation for medicinal use. When a small dose of I-131 is ingested, this is absorbed in the sanguine torrent in the gastrointestinal tract (Gl) and it is concentrated by the blood on the thyroid gland, where it begins to destroy the cells. This treatment makes that the activity of the thyroid decreases in great measure and in some cases it can transform an hyperactive thyroid in a hypoactive thyroid which requires additional treatments. The sodium iodide I-131 is one of the products elaborated and marketed by the ININ in the Radiopharmaceuticals and Radioisotopes production plant, dependent of the Radioactive Material Department of the Nuclear Applications in the Health Management. The Plant is the only one in its type that exists in the country, it has Sanitary License and Good Practice of Production Certificate, emitted by the Secretary of Health, and licenses for the handling and the transportation of radioactive material, sent by the National Commission of Nuclear Safety and Safeguards. Also, the quality system of the plant is certified under the ISO 9001:2000 standard. (Author)

Participation of the ININ in the activities of radioactive waste management of the Laguna Verde Central

International Nuclear Information System (INIS)

Medrano L, M.; Rodriguez C, C.; Linares R, D.; Ramirez G, R.; Zarate M, N.

2006-01-01

From the beginning of the operation of the Laguna Verde Central (CLV) the National Institute of Nuclear Research (ININ) has come supporting the CLV in the activities of administration of the humid and dry radioactive waste generated by the operation of the two units of the CLV, from the elaboration of procedures to the temporary storage in site, the implementation of a program of minimization and segregation of dry solid wastes, until the classification of the lots of humid waste and bulk dry wastes. In this work the description of the management activities of radioactive wastes carried out by the ININ in the facilities of the CLV to the date is presented, as well as some actions that they are had drifted in the future near, among those that it stands out the determination of the total alpha activity in humid samples by means of scintillation analysis. (Author)

Centro de Investigacion en Ciencias Atomicas, Universidad de Costa Rica: with over 30 years experience in the peaceful use of nuclear energy

International Nuclear Information System (INIS)

Garcia, Ralph

2012-01-01

The Centro de Investigacion en Ciencias Atomicas, Nucleares y Moleculares, CICANUM, is a research unit of the Universidad de Costa Rica; which is dedicated to research over the use of nuclear energy for peaceful purposes. The research areas covered are: health, biosciences, science agrifood, environmental pollution, earth sciences and the sea and national heritage. The different laboratories are thirteen, among them: the mass spectrometry, gas sensors, x-ray fluorescence, thermoluminescence, gamma spectrometry, physics and chemistry of the earth, and microwave plasma, reference, alpha spectrometry, radiochemical and chemical preparations, nuclear electronics and instrumentation; plus, whatever with neutron sources and radioactive waste winery [es

Participation of the ININ in the external radiological emergency plan of the Laguna Verde power plant; Participacion del ININ en el plan de emergencia radiologica externo de la Central Laguna Verde

Energy Technology Data Exchange (ETDEWEB)

Martinez S, R; Cervini L, A [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

1991-07-01

The planning of performances in radiological emergencies, with the object of reducing the consequences as much as possible on the population to accidental liberations of radioactive material coming from Nuclear power plant, it has been of main interest in the nuclear community in the world. In Mexico it has not been the exception, since with the setting in march of the Laguna Verde nuclear power plant exists an executive program of planning for emergencies that it outlines the activities to follow trending to mitigate the consequences that are derived of this emergency. As integral part of this program this the External Plan of Radiological Emergency (PERE) that covers the emergencies that could leave the frontiers of the Laguna Verde power plant. In the PERE it settles down the planning, address and control of the preparation activities, response and recovery in emergencies, as well as the organization and coordination of the institutions that participate. The National Institute of Nuclear Research (ININ), like integral part of these institutions in the PERE, has an infrastructure that it allows to participate in the plan in a direct way in the activities of 'Control of the radiological exhibition the response personnel and control of water and foods' and of support way and consultant ship in the activities of 'Monitoring, Classification and decontamination of having evaluated' and 'Specialized medical radiological attention'. At the moment the ININ has a radiological mobile unit and this conditioning a second mobile unit to carry out part of the activities before mentioned; also accounts with 48 properly qualified people that directly intervene in the plan. In order to guarantee an adequate response in the PERE an organization it has been structured like that of the annex as for the personnel, transport, team, procedures and communication system, with the objective always of guaranteeing the security and the population's health in emergency situations in the

Laboratory of research for environmental radiation and its dosimetry in the ININ

International Nuclear Information System (INIS)

Chavez S, B.M.

2003-01-01

The objectives of this work are to learn on the methodology that should be continued for the investigation of such a specialized topic as it is a radiation laboratory and to develop the executive project of a building that contains laboratories focused to the investigation of the radiation levels in the environment and their dosimetry. The National Institute of Nuclear Research (ININ), is the place where are carried out many of the investigations related to the field of the physics and chemistry in Mexico besides being the center of nuclear research more important of Latin America and it is for that reason that here is proposed the Laboratory of Low Radiation and its Dosimetry, since the Institute accounts with the whole infrastructure and necessary safety for this type of laboratories. (Author)

Implementation of the Prompt Gamma facility in the ININ; Implementacion de la instalacion del Prompt Gamma en el ININ

Energy Technology Data Exchange (ETDEWEB)

Macias B, L.R.; Delfin L, A.; Aguilar H, F. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

2002-07-01

The Prompt Gamma Neutron Activation Analysis (PGNAA) technique is based on the reaction of a neutron and an atom emitting gamma radiation in an immediate form and it is used for the elemental identification and characterization. This is a non-destructive technique and presents advantages compared with the X-ray fluorescence analysis technique since it has the advantage of the ability for the neutron penetration which allows a complete analysis in volume of material while the X-ray penetration is not very deep, it is superficial and other advantage of PGNAA is that can detects light elements while by mean of the X-ray fluorescence technique it is not possible. In this work it is shown the implementation of this technique un the National Institute of Nuclear Research (ININ) and the way in which this technique is applied with a radiation source of the TRIGA Mark III reactor from which thermal neutrons were isolated. (Author)

Annual Report 1995. Direccion de Servicios Tecnologicos; Informe Anual 1995. Direccion de Servicios Tecnologicos

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-12-31

The main results for projects, academic studies, services and departmental activities belonging to the Direccion de Servicios Tecnologicos of the Instituto Nacional de Investigaciones Nucleares (ININ), during 1995 are shown. It includes results in the different areas of Design, Promotion and Diffusion, Information Center, Professional development, Electronic Engineering, Information Department, Radiological security, Radioactive wastes, Ionizing radiation measurement, Radioactive materials, Chemical analysis and Technical assistance to the nuclear electrical central station of Laguna Verde. Among its activities, it includes information concerning the infrastructure, budgetary expenses and publications. (Author).

Annual Report 1995. Direccion de Servicios Tecnologicos

International Nuclear Information System (INIS)

1995-01-01

The main results for projects, academic studies, services and departmental activities belonging to the Direccion de Servicios Tecnologicos of the Instituto Nacional de Investigaciones Nucleares (ININ), during 1995 are shown. It includes results in the different areas of Design, Promotion and Diffusion, Information Center, Professional development, Electronic Engineering, Information Department, Radiological security, Radioactive wastes, Ionizing radiation measurement, Radioactive materials, Chemical analysis and Technical assistance to the nuclear electrical central station of Laguna Verde. Among its activities, it includes information concerning the infrastructure, budgetary expenses and publications. (Author)

Storage facilities of spent nuclear fuel in dry for Mexican nuclear facilities; Instalaciones de almacenamiento de combustible nuclear gastado en seco para instalaciones nucleares mexicanas

Energy Technology Data Exchange (ETDEWEB)

Salmeron V, J. A.; Camargo C, R.; Nunez C, A.; Mendoza F, J. E.; Sanchez J, J., E-mail: juan.salmeron@cnsns.gob.mx [Comision Nacional de Seguridad Nuclear y Salvaguardias, Dr. Jose Ma. Barragan No. 779, Col. Narvarte, 03020 Mexico D. F. (Mexico)

2013-10-15

In this article the relevant aspects of the spent fuel storage and the questions that should be taken in consideration for the possible future facilities of this type in the country are approached. A brief description is proposed about the characteristics of the storage systems in dry, the incorporate regulations to the present Nuclear Regulator Standard, the planning process of an installation, besides the approaches considered once resolved the use of these systems; as the modifications to the system, the authorization periods for the storage, the type of materials to store and the consequent environmental impact to their installation. At the present time the Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) considers the possible generation of two authorization types for these facilities: Specific, directed to establish a new nuclear installation with the authorization of receiving, to transfer and to possess spent fuel and other materials for their storage; and General, focused to those holders that have an operation license of a reactor that allows them the storage of the nuclear fuel and other materials that they possess. Both authorizations should be valued according to the necessities that are presented. In general, this installation type represents a viable solution for the administration of the spent fuel and other materials that require of a temporary solution previous to its final disposal. Its use in the nuclear industry has been increased in the last years demonstrating to be appropriate and feasible without having a significant impact to the health, public safety and the environment. Mexico has two main nuclear facilities, the nuclear power plant of Laguna Verde of the Comision Federal de Electricidad (CFE) and the facilities of the TRIGA Reactor of the Instituto Nacional de Investigaciones Nucleares (ININ) that will require in a future to use this type of disposition installation of the spent fuel and generated wastes. (Author)

Serpent: an alternative for the nuclear fuel cells analysis of a BWR; SERPENT: una alternativa para el analisis de celdas de combustible nuclear de un BWR

Energy Technology Data Exchange (ETDEWEB)

Silva A, L.; Del Valle G, E. [IPN, Escuela Superior de Fisica y Matematicas, Av. Instituto Politecnico Nacional s/n, U.P. Adolfo Lopez Mateos, Edificio 9, Col. San Pedro Zacatenco, 07738 Mexico D. F. (Mexico); Gomez T, A. M., E-mail: lidi.s.albarran@gmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2013-10-15

In the last ten years the diverse research groups in nuclear engineering of the Universidad Nacional Autonoma de Mexico and Instituto Politecnico Nacional (UNAM, IPN), as of research (Instituto Nacional de Investigaciones Nucleares, ININ) as well as the personnel of the Nuclear Plant Management of the Comision Federal de Electricidad have been using the codes Helios and /or CASMO-4 in the generation of cross sections (X S) of nuclear fuel cells of the cores corresponding to the Units 1 and 2 of the nuclear power plant of Laguna Verde. Both codes belong to the Studsvik-Scandpower Company who receives the payment for the use and their respective maintenance. In recent years, the code Serpent appears among the nuclear community distributed by the OECD/Nea which does not has cost neither in its use neither in its maintenance. The code is based on the Monte Carlo method and makes use of the processing in parallel. In the Escuela Superior de Fisica y Matematicas of the IPN, the personnel has accumulated certain experience in the use of Serpent under the direction of personal of the ININ; of this experience have been obtained for diverse fuel burned, the infinite multiplication factor for three cells of nuclear fuel, without control bar and with control bar for a known thermodynamic state fixed by: a) the fuel temperature (T{sub f}), b) the moderator temperature (T{sub m}) and c) the vacuums fraction (α). Although was not realized any comparison with the X S that the codes Helios and CASMO-4 generate, the results obtained for the infinite multiplication factor show the prospective tendencies with regard to the fuel burned so much in the case in that is not present the control bar like when it is. The results are encouraging and motivate to the study group to continue with the X S generation of a core in order to build the respective library of nuclear data as a following step and this can be used for the codes PARCS, of USA NRC, DYN3D of HZDR, or others developed locally

Dose levels in the hot cells area ININ; Niveles de dosis en el area de celdas calientes-ININ

Energy Technology Data Exchange (ETDEWEB)

Torre, J. De la; Ramirez, J.M. [ININ, A.P. 18-1027, 11801 Mexico D.F. (Mexico); Solis, M.L. [UAEM, Toluca, Estado de Mexico (Mexico)]. E-mail: jto@nuclear.inin.mx

2004-07-01

The Laboratory of Hot Cells (LCC) located in the National Institute of Nuclear Research (ININ) is an institution, it is an area where radioactive material is managed with different activity values, in function of its original design for 10,000 curies of Co-60. Managing this materials in the installation, it implies to measure and to analyze the dose levels that the POE will receive as well as the implementation of appropriate measures of radiological protection and radiological safety, so that that is completed settled down by the concept ALARA. In this work they are carried out mensurations of the levels of the dose to receive for the POE when managing radionuclides with maximum activities that can be allowed in function of the current conditions of the cells and an evaluation of the obtained results is made comparing them with the effective international norms as well as the application of the program of surveillance and radiological protection implemented for the development of the works that are carry out in the installation. (Author)

Storage facilities of spent nuclear fuel in dry for Mexican nuclear facilities

International Nuclear Information System (INIS)

Salmeron V, J. A.; Camargo C, R.; Nunez C, A.; Mendoza F, J. E.; Sanchez J, J.

2013-10-01

In this article the relevant aspects of the spent fuel storage and the questions that should be taken in consideration for the possible future facilities of this type in the country are approached. A brief description is proposed about the characteristics of the storage systems in dry, the incorporate regulations to the present Nuclear Regulator Standard, the planning process of an installation, besides the approaches considered once resolved the use of these systems; as the modifications to the system, the authorization periods for the storage, the type of materials to store and the consequent environmental impact to their installation. At the present time the Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) considers the possible generation of two authorization types for these facilities: Specific, directed to establish a new nuclear installation with the authorization of receiving, to transfer and to possess spent fuel and other materials for their storage; and General, focused to those holders that have an operation license of a reactor that allows them the storage of the nuclear fuel and other materials that they possess. Both authorizations should be valued according to the necessities that are presented. In general, this installation type represents a viable solution for the administration of the spent fuel and other materials that require of a temporary solution previous to its final disposal. Its use in the nuclear industry has been increased in the last years demonstrating to be appropriate and feasible without having a significant impact to the health, public safety and the environment. Mexico has two main nuclear facilities, the nuclear power plant of Laguna Verde of the Comision Federal de Electricidad (CFE) and the facilities of the TRIGA Reactor of the Instituto Nacional de Investigaciones Nucleares (ININ) that will require in a future to use this type of disposition installation of the spent fuel and generated wastes. (Author)

Serpent: an alternative for the nuclear fuel cells analysis of a BWR

International Nuclear Information System (INIS)

Silva A, L.; Del Valle G, E.; Gomez T, A. M.

2013-10-01

In the last ten years the diverse research groups in nuclear engineering of the Universidad Nacional Autonoma de Mexico and Instituto Politecnico Nacional (UNAM, IPN), as of research (Instituto Nacional de Investigaciones Nucleares, ININ) as well as the personnel of the Nuclear Plant Management of the Comision Federal de Electricidad have been using the codes Helios and /or CASMO-4 in the generation of cross sections (X S) of nuclear fuel cells of the cores corresponding to the Units 1 and 2 of the nuclear power plant of Laguna Verde. Both codes belong to the Studsvik-Scandpower Company who receives the payment for the use and their respective maintenance. In recent years, the code Serpent appears among the nuclear community distributed by the OECD/Nea which does not has cost neither in its use neither in its maintenance. The code is based on the Monte Carlo method and makes use of the processing in parallel. In the Escuela Superior de Fisica y Matematicas of the IPN, the personnel has accumulated certain experience in the use of Serpent under the direction of personal of the ININ; of this experience have been obtained for diverse fuel burned, the infinite multiplication factor for three cells of nuclear fuel, without control bar and with control bar for a known thermodynamic state fixed by: a) the fuel temperature (T f ), b) the moderator temperature (T m ) and c) the vacuums fraction (α). Although was not realized any comparison with the X S that the codes Helios and CASMO-4 generate, the results obtained for the infinite multiplication factor show the prospective tendencies with regard to the fuel burned so much in the case in that is not present the control bar like when it is. The results are encouraging and motivate to the study group to continue with the X S generation of a core in order to build the respective library of nuclear data as a following step and this can be used for the codes PARCS, of USA NRC, DYN3D of HZDR, or others developed locally in the

Aquaculture investigations with nuclear energy techniques; Investigaciones acuicolas con tecnicas de energia nuclear

Energy Technology Data Exchange (ETDEWEB)

Heredia Salazar, Brunilda [Fondo Nacional de Investigaciones Agropecuarias (FONAIAP), (CIAE), Estacion Experimental Guanapito, Guarico (Venezuela)

1997-07-01

acuaticos y especialmente de peces bajo condiciones controladas hasta su cosecha, procesamiento, comercializacion y consumo ha sido senalado como una actividad que produce numerosos beneficios, entre los que destacan la obtencion de alimento de alto valor proteico, la incorporacion a la economia de tierras no aptas para la agricultura, el incremento de los recursos pesqueros, el reciclaje de materia organica producida en las unidades, el desarrollo regional, la generacion de empleos, tecnologias y divisas. Se identifican varias areas de investigacion que pueden ser desarrolladas, utilizando las tecnologias nucleares, como por ejemplo en la reproduccion, nutricion, diagnostico y control de enfermedades, monitoreo ambiental y certificacion de la calidad de productos. En lo concerniente a nuestra acuicultura, se requieren investigaciones que ameritan el uso de estas tecnicas. Por ejemplo: 1) Produccion de agentes inductores autoctonos, mediante radioinmunoensayos (RIA) para determinar la actividad de las gonadotropinas provenientes de las hipofisis de los peces cultivados con la finalidad de recolectar las glandulas en el momento optimo, desencadenantes de la maduracion final y desove en especies autoctonas. 2) Mejoramiento genetico de especies cultivadas a traves del conocimiento de la carga genetica de diferentes lineas y razas encontradas en el medio natural y lograr su mantenimiento para resolver los problemas de endogamia, tanto en especies autoctonas como exoticas, con el uso de tecnicas de marcaje del ADE, RFLA y tecnicas de microsatelites. 3) Estudios nutricionales y de alimentacion de las especies sometidas a cultivo comercial, especialmente sobre el efecto de las aflatoxinas sobre los insumos o la racion, sustancias que influyen negativamente en la nutricion acuicola. En este caso se usan inmunoensayos competitivos de enzimas ligadas (ELISA) y radioinmunoensayos. 4) Diagnostico de enfermedades, mediante el kit ELISA, especificamente de las enfermedades mas comunes

Development for analysis system of rods enrichment of nuclear fuels; Desarrollo de un sistema de analisis de enriquecimiento de barras de combustible nuclear

Energy Technology Data Exchange (ETDEWEB)

Rojas C, E.L

1998-11-01

Nuclear industry is strongly regulated all over the world and quality assurance is important in every nuclear installation or process related with it. Nuclear fuel manufacture is not the exception. ININ was committed to manufacture four nuclear fuel bundles for the CFE nucleo electric station at Laguna Verde, Veracruz, under General Electric specifications and fulfilling all the requirements of this industry. One of the quality control requisites in nuclear fuel manufacture deals with the enrichment of the pellets inside the fuel bundle rods. To achieve the quality demanded in this aspect, the system described in this work was developed. With this system, developed at ININ it is possible to detect enrichment spikes since 0.4 % in a column of pellets with a 95 % confidence interval and to identify enrichment differences greater than 0.2 % e between homogeneous segments, also with a 95 % confidence interval. ININ delivered the four nuclear fuel bundles to CFE and these were introduced in the core of the nuclear reactor of Unit 1 in the fifth cycle. Nowadays they are producing energy and have shown a correct mechanical performance and neutronic behavior. (Author)

Public Acceptance of Nuclear Energy in Mexico

International Nuclear Information System (INIS)

Ramirez-Sanchez, Jose R.; Alonso, Gustavo; Palacios, H. Javier

2006-01-01

energy. Also we can say that in Mexico there are few nuclear information centers one is located at Laguna Verde power plant, and there is other one at Instituto Nacional de Investigaciones Nucleares (ININ). So if we want to improve public acceptance in Mexico we should design a well defined strategy to communicate nuclear issues to the public. This strategy should point out many aspects of nuclear power as discussed before. In addition, recent economic studies performed at ININ, indicate that, nuclear energy is currently is price competitive with other sources based on fossil fuels. This facts are currently under discussion with government entities, and now acceptance of government entities is increasing. Even there was a public announce of Mexican government in the sense that Mexico is considering the nuclear option as a part of its energy strategy for the near future. (authors)

Participation of the ININ in the external radiological emergency plan of the Laguna Verde power plant

International Nuclear Information System (INIS)

Martinez S, R.; Cervini L, A.

1991-01-01

The planning of performances in radiological emergencies, with the object of reducing the consequences as much as possible on the population to accidental liberations of radioactive material coming from Nuclear power plant, it has been of main interest in the nuclear community in the world. In Mexico it has not been the exception, since with the setting in march of the Laguna Verde nuclear power plant exists an executive program of planning for emergencies that it outlines the activities to follow trending to mitigate the consequences that are derived of this emergency. As integral part of this program this the External Plan of Radiological Emergency (PERE) that covers the emergencies that could leave the frontiers of the Laguna Verde power plant. In the PERE it settles down the planning, address and control of the preparation activities, response and recovery in emergencies, as well as the organization and coordination of the institutions that participate. The National Institute of Nuclear Research (ININ), like integral part of these institutions in the PERE, has an infrastructure that it allows to participate in the plan in a direct way in the activities of 'Control of the radiological exhibition the response personnel and control of water and foods' and of support way and consultant ship in the activities of 'Monitoring, Classification and decontamination of having evaluated' and 'Specialized medical radiological attention'. At the moment the ININ has a radiological mobile unit and this conditioning a second mobile unit to carry out part of the activities before mentioned; also accounts with 48 properly qualified people that directly intervene in the plan. In order to guarantee an adequate response in the PERE an organization it has been structured like that of the annex as for the personnel, transport, team, procedures and communication system, with the objective always of guaranteeing the security and the population's health in emergency situations in the

Development for analysis system of rods enrichment of nuclear fuels

International Nuclear Information System (INIS)

Rojas C, E.L.

1998-01-01

Nuclear industry is strongly regulated all over the world and quality assurance is important in every nuclear installation or process related with it. Nuclear fuel manufacture is not the exception. ININ was committed to manufacture four nuclear fuel bundles for the CFE nucleo electric station at Laguna Verde, Veracruz, under General Electric specifications and fulfilling all the requirements of this industry. One of the quality control requisites in nuclear fuel manufacture deals with the enrichment of the pellets inside the fuel bundle rods. To achieve the quality demanded in this aspect, the system described in this work was developed. With this system, developed at ININ it is possible to detect enrichment spikes since 0.4 % in a column of pellets with a 95 % confidence interval and to identify enrichment differences greater than 0.2 % e between homogeneous segments, also with a 95 % confidence interval. ININ delivered the four nuclear fuel bundles to CFE and these were introduced in the core of the nuclear reactor of Unit 1 in the fifth cycle. Nowadays they are producing energy and have shown a correct mechanical performance and neutronic behavior. (Author)

Implementation of the Prompt Gamma facility in the ININ

International Nuclear Information System (INIS)

Macias B, L.R.; Delfin L, A.; Aguilar H, F.

2002-01-01

The Prompt Gamma Neutron Activation Analysis (PGNAA) technique is based on the reaction of a neutron and an atom emitting gamma radiation in an immediate form and it is used for the elemental identification and characterization. This is a non-destructive technique and presents advantages compared with the X-ray fluorescence analysis technique since it has the advantage of the ability for the neutron penetration which allows a complete analysis in volume of material while the X-ray penetration is not very deep, it is superficial and other advantage of PGNAA is that can detects light elements while by mean of the X-ray fluorescence technique it is not possible. In this work it is shown the implementation of this technique un the National Institute of Nuclear Research (ININ) and the way in which this technique is applied with a radiation source of the TRIGA Mark III reactor from which thermal neutrons were isolated. (Author)

Dose levels in the hot cells area ININ

International Nuclear Information System (INIS)

Torre, J. De la; Ramirez, J.M.; Solis, M.L.

2004-01-01

The Laboratory of Hot Cells (LCC) located in the National Institute of Nuclear Research (ININ) is an institution, it is an area where radioactive material is managed with different activity values, in function of its original design for 10,000 curies of Co-60. Managing this materials in the installation, it implies to measure and to analyze the dose levels that the POE will receive as well as the implementation of appropriate measures of radiological protection and radiological safety, so that that is completed settled down by the concept ALARA. In this work they are carried out mensurations of the levels of the dose to receive for the POE when managing radionuclides with maximum activities that can be allowed in function of the current conditions of the cells and an evaluation of the obtained results is made comparing them with the effective international norms as well as the application of the program of surveillance and radiological protection implemented for the development of the works that are carry out in the installation. (Author)

Proposal to improve quality in the sale process of products and services through the implementation of the post-sale service, in the National Institute of Nuclear Research (ININ) for year 2000

International Nuclear Information System (INIS)

Pliego R, M.T.

2000-01-01

In the National Institute of Nuclear Research (ININ) it has been able to identify a series of problems in the commercial area just as: lack of publicity, new competitors, customers, loss by the unsatisfied services which are supplied, lack of personnel which dedicates to the sales activity among others. Therefore it has been decided to carry out the implementation of a post-sale service to assure the success of sales through the constant contracting products and services for part of customers totally satisfied, achieving so the fulfilment of the ININ commercialization objectives. Therefore, it was carried out a study which includes: theoretical frame on marketing making emphasis on the management process in this Institute. Also was necessary to know the study object about some aspects such as: its constitution, mission, politics, sales procedures, with the purpose to find their deficiencies and obtaining a scope about ININ products and services which it provides. Therefore was carried out a marketing research with some customers of the Institute obtaining their commentaries. With these analysis elements it has been possible to propose an implementation of a post-sale service and concluding that with this manner, it will be able to assure the complete satisfaction of the customers establishing in the service contract a guarantee with legal sustenance for the fulfilment of this. The services and products offered are: production and sales of radionuclides, radiopharmaceuticals, for diagnostic and theory. Elemental analysis (PIXE, PGE, RbS, NMR,NAA), atomic absorption, X-ray diffraction, X-ray fluorescence, plasma spectroscopy, high resolution mass spectroscopy, gas and mass chromatography, as well as in radiological protection, electron microscopy, irradiation of finished products and raw materials, study of materials and documentation among others. (Author)

About the necessity to update the Radiological safety and protection regulations of the National Institute of Nuclear Research (ININ); Sobre la necesidad de actualizar el reglamento de proteccion y seguridad radiologica del ININ

Energy Technology Data Exchange (ETDEWEB)

Alvarez R, J.T. [Instituto Nacional de Investigaciones Nucleares, Salazar (Mexico). Dept. de Metrologia

1997-07-01

It is argued the necessity to update the Radiological safety and Protection regulations (Review 3) of ININ, with the purpose that it implements the ICRU operative magnitudes system. Such a system used with radiological protection purposes. The objective of this system is to do an estimation of the effective equivalent dose H{sub E} and/or the Effective dose E, proposed in the ICRP 26 and ICRU 60 dose limits systems respectively. (Author)

New digital control system for the operation of the Colombian research reactor IAN-R1

International Nuclear Information System (INIS)

Celis del A, L.; Rivero, T.; Bucio, F.; Ramirez, R.; Segovia, A.; Palacios, J.

2015-09-01

En 2011, Mexico won the Colombian international tender for the renewal of instrumentation and control of the IAN-R1 Reactor, to Argentina and the United States. This paper presents the design criteria and the development made for the new digital control system installed in the Colombian nuclear reactor IAN-R1, which is based on a redundant and diverse architecture, which provides increased availability, reliability and safety in the reactor operation. This control system and associated instrumentation met all national export requirements, with the safety requirements established by the IAEA as well as the requirements demanded by the Colombian Regulatory Body in nuclear matter. On August 20, 2012, the Colombian IAN-R1 reactor reached its first criticality controlled with the new system developed at Instituto Nacional de Investigaciones Nucleares (ININ). On September 14, 2012, the new control system of the Colombian IAN-R1 reactor was officially handed over to the Colombian authorities, this being the first time that Mexico exported nuclear technology through the ININ. Currently the reactor is operating successfully with the new control system, and has an operating license for 5 years. (Author)

Study of leak detection using tracers in a bottling plant in Mexico

International Nuclear Information System (INIS)

Vizuet Gonzalez, Jorge; Reyes Jimenez, Jose Luis; Molina, Gustavo

2005-01-01

The Instituto Nacional de Investigaciones Nucleares (ININ), Mexico, promoted the application of different techniques, involving the use of radioactive materials. Among them is the use of radioactive material as a medium tracer in the industry. Below is a study of locating leaks in ducts collectors of process water of a bottling plant which had several problems, one was not able to stop production, and most important, having to disassemble a large amount of machinery and equipment, in order to open the floor and locate the leak

Technological evaluation for the extension of the operation license to the nuclear power plant of Laguna Verde

International Nuclear Information System (INIS)

Arganis J, C. R.; Medina A, A. L.

2010-01-01

At the present time one of the tendencies in the nuclear industry is the renovation of operation licenses of the nuclear power plants, with the purpose of prolonging their operation 20 years more than the time settled down in their original license, which is of 30 years for the case of the nuclear power plant of Laguna Verde. This allows the electric power generation for a major period of time and to a relatively low price, giving this way a bigger competitiveness to the power stations of nuclear power. However, to request the license extension of the nuclear power plant requires to get ready the documentation and necessary studies for: to maintain a high level of security, to optimize the operation, maintenance and service life of the structures, systems and components, to maintain an acceptable level of performance, to maximize the recovery of the investment about the service of the nuclear power plant and to preserve the sure conditions for a major operation period at the license time. This paper describes the studies conducted by the Materials Technology Department of the Instituto Nacional de Investigaciones Nucleares (ININ) to substantiate the required documentation for obtaining the extension of operating license of the nuclear power plant. These studies are focused mainly in the reactor pressure vessels of both units, as well as in the deposit of noble metals and the influence of the sludges (crud s) in this deposit. (Author)

Advances in the development of the Mexican platform for analysis and design of nuclear reactors: AZTLAN Platform; Avances en el desarrollo de la plataforma mexicana para analisis y diseno de reactores nucleares: AZTLAN Platform

Energy Technology Data Exchange (ETDEWEB)

Gomez T, A. M.; Puente E, F. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Del Valle G, E. [IPN, Escuela Superior de Fisica y Matematicas, Av. IPN s/n, 07738 Ciudad de Mexico (Mexico); Francois L, J. L. [UNAM, Facultad de Ingenieria, Departamento de Sistemas Energeticos, Paseo Cuauhnahuac 8532, Col. Progreso, 62550 Jiutepec, Morelos (Mexico); Espinosa P, G., E-mail: armando.gomez@inin.gob.mx [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, 09340 Ciudad de Mexico (Mexico)

2017-09-15

The AZTLAN platform project: development of a Mexican platform for the analysis and design of nuclear reactors, financed by the SENER-CONACYT Energy Sustain ability Fund, was approved in early 2014 and formally began at the end of that year. It is a national project led by the Instituto Nacional de Investigaciones Nucleares (ININ) and with the collaboration of Instituto Politecnico Nacional (IPN), the Universidad Autonoma Metropolitana (UAM) and Universidad Nacional Autonoma de Mexico (UNAM) as part of the development team and with the participation of the Laguna Verde Nuclear Power Plant, the National Commission of Nuclear Safety and Safeguards, the Ministry of Energy and the Karlsruhe Institute of Technology (Kit, Germany) as part of the user group. The general objective of the project is to modernize, improve and integrate the neutronic, thermo-hydraulic and thermo-mechanical codes, developed in Mexican institutions, in an integrated platform, developed and maintained by Mexican experts for the benefit of Mexican institutions. Two years into the process, important steps have been taken that have consolidated the platform. The main results of these first two years have been presented in different national and international forums. In this congress, some of the most recent results that have been implemented in the platform codes are shown in more detail. The current status of the platform from a more executive view point is summarized in this paper. (Author)

About the necessity to update the Radiological safety and protection regulations of the National Institute of Nuclear Research (ININ)

International Nuclear Information System (INIS)

Alvarez R, J.T.

1997-01-01

It is argued the necessity to update the Radiological safety and Protection regulations (Review 3) of ININ, with the purpose that it implements the ICRU operative magnitudes system. Such a system used with radiological protection purposes. The objective of this system is to do an estimation of the effective equivalent dose H E and/or the Effective dose E, proposed in the ICRP 26 and ICRU 60 dose limits systems respectively. (Author)

Final report of the inter institutional project ININ-CNSNS 'Source Terms specific for the CNLV'; Informe final del proyecto interinstitucional ININ-CNSNS 'Termino Fuente especifico para la CNLV'

Energy Technology Data Exchange (ETDEWEB)

Anaya M, R A [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

1991-02-15

The purpose of the project inter institutional ININ-CNSNS 'Source Terms Specifies for the CNLV' it is the one of implanting in the computer CYBER (CDC 180-830) of the ININ, the 'Source Term Code Package' (STCP) and to make the operation tests and corresponding operation using the data of the sample problem, for finally to liberate the package, all time that by means of the analysis of the results it is consider appropriate. In this report the results of the are presented simulation of the sequence 'Energy Losses external' (Station blackout) and 'Lost total of CA with failure of the RCIC and success of the HPCS' both with data of the Laguna Verde Central. (Author)

The National Institute of Nuclear Research (ININ) and its participation in the External Radiological Emergency Plans at Laguna Verde Power plant

International Nuclear Information System (INIS)

Suarez, G.

1998-01-01

In this article it is described the form in which the ININ participates in the External Radiological Emergency Plan at Laguna Verde Power plant. It is set the objective, mission and organization of this plan. The responsibilities and activities that plan has assigned are mentioned also the organization to fulfil them and the obtained results during 9 years of participation. (Author)

Operational tests and irradiation programming proposal for the industrial production of {sup 131} I in the TRIGA Mark III reactor of the Nuclear Centre (ININ); Pruebas operacionales y propuesta de programacion de irradiacion para la produccion industrial de {sup 131} I en el reactor TRIGA Mark III del Centro Nuclear (ININ)

Energy Technology Data Exchange (ETDEWEB)

Alanis M, J.; Reyes J, J.L.; Ruiz C, M.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2003-07-01

In the National Institute of Nuclear Research it was recently finished the project for the production of I-131 at industrial level, the one which can divide basically in: (a) Preparation of the raw materials (TeO{sub 2}), (b) Sintering, (c) Neutron irradiation and (d) Separation of the I-131. With the end of starting the industrial production of this process, in this work it is presented the operational tests and an irradiation proposal of the TeO{sub 2} to obtain quantities of I-131 that cover, if not totally, partially the national market. For this, they were carried out irradiation tests of 6 samples to different flows of neutrons. The result of these tests settles down that irradiating a mass of 240 g TeO{sub 2} to a neutron flow of 6.53 x 10{sup 12} n/cm{sup 2}s in 4 cycles of 30 h per week approximately 2.54 Ci/week of I-131 distilled are obtained, which represents 35% of the demand of the Plant of Radioisotopes production of the ININ. (Author)

The National Institute of Nuclear Research (ININ) and its participation in the External Radiological Emergency Plans at Laguna Verde Power plant; El ININ y su participacion en el Plan de Emergencia Radiologica Externo de la Central Laguna Verde

Energy Technology Data Exchange (ETDEWEB)

Suarez, G. [Instituto Nacional de Investigaciones Nucleares, Departamento de Proteccion Radiologica, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

1998-07-01

In this article it is described the form in which the ININ participates in the External Radiological Emergency Plan at Laguna Verde Power plant. It is set the objective, mission and organization of this plan. The responsibilities and activities that plan has assigned are mentioned also the organization to fulfil them and the obtained results during 9 years of participation. (Author)

Advances in the development of the Mexican platform for analysis and design of nuclear reactors: AZTLAN Platform

International Nuclear Information System (INIS)

Gomez T, A. M.; Puente E, F.; Del Valle G, E.; Francois L, J. L.; Espinosa P, G.

2017-09-01

The AZTLAN platform project: development of a Mexican platform for the analysis and design of nuclear reactors, financed by the SENER-CONACYT Energy Sustain ability Fund, was approved in early 2014 and formally began at the end of that year. It is a national project led by the Instituto Nacional de Investigaciones Nucleares (ININ) and with the collaboration of Instituto Politecnico Nacional (IPN), the Universidad Autonoma Metropolitana (UAM) and Universidad Nacional Autonoma de Mexico (UNAM) as part of the development team and with the participation of the Laguna Verde Nuclear Power Plant, the National Commission of Nuclear Safety and Safeguards, the Ministry of Energy and the Karlsruhe Institute of Technology (Kit, Germany) as part of the user group. The general objective of the project is to modernize, improve and integrate the neutronic, thermo-hydraulic and thermo-mechanical codes, developed in Mexican institutions, in an integrated platform, developed and maintained by Mexican experts for the benefit of Mexican institutions. Two years into the process, important steps have been taken that have consolidated the platform. The main results of these first two years have been presented in different national and international forums. In this congress, some of the most recent results that have been implemented in the platform codes are shown in more detail. The current status of the platform from a more executive view point is summarized in this paper. (Author)

Biological wound dressings sterilized with gamma radiation: Mexican clinical experience

Science.gov (United States)

Martínez-Pardo, M. E.; Ley-Chávez, E.; Reyes-Frías, M. L.; Rodríguez-Ferreyra, P.; Vázquez-Maya, L.; Salazar, M. A.

2007-11-01

Biological wound dressings sterilized with gamma radiation, such as amnion and pig skin, are a reality in Mexico. These tissues are currently processed in the tissue bank and sterilized in the Gamma Industrial Irradiation Plant; both facilities belong to the Instituto Nacional de Investigaciones Nucleares (ININ) (National Institute of Nuclear Research). With the strong support of the International Atomic Energy Agency, the bank was established at the ININ and the Mexican Ministry of Health issued its sanitary license on July 7, 1999. The Quality Management System of the bank was certified by ISO 9001:2000 on August 1, 2003; the scope of the system is "Research, Development and Processing of Biological Tissues Sterilized with Gamma Radiation". At present, more than 150 patients from 16 hospitals have been successfully treated with these tissues. This paper presents a brief description of the tissue processing, as well as the present Mexican clinical experience with children and adult patients who underwent medical treatment with radiosterilized amnion and pig skin, used as biological wound dressings on burns and ocular surface disorders.

Biological wound dressings sterilized with gamma radiation: Mexican clinical experience

Energy Technology Data Exchange (ETDEWEB)

Martinez-Pardo, M.E. [Instituto Nacional de Investigaciones Nucleares, Apdo. postal 18-1027, Col. Escandon 11801 Mexico DF (Mexico)], E-mail: memp@nuclear.inin.mx; Ley-Chavez, E. [ISSEMYM Toluca, Mexico DF (Mexico); Reyes-Frias, M.L. [Instituto Nacional de Investigaciones Nucleares, Apdo. postal 18-1027, Col. Escandon 11801 Mexico DF (Mexico); Rodriguez-Ferreyra, P. [Hospital ' Dr. Nicolas San Juan' , Toluca, Mexico DF (Mexico); Vazquez-Maya, L.; Salazar, M.A. [Hospital General de Mexico, Mexico DF (Mexico)

2007-11-15

Biological wound dressings sterilized with gamma radiation, such as amnion and pig skin, are a reality in Mexico. These tissues are currently processed in the tissue bank and sterilized in the Gamma Industrial Irradiation Plant; both facilities belong to the Instituto Nacional de Investigaciones Nucleares (ININ) (National Institute of Nuclear Research). With the strong support of the International Atomic Energy Agency, the bank was established at the ININ and the Mexican Ministry of Health issued its sanitary license on July 7, 1999. The Quality Management System of the bank was certified by ISO 9001:2000 on August 1, 2003; the scope of the system is 'Research, Development and Processing of Biological Tissues Sterilized with Gamma Radiation'. At present, more than 150 patients from 16 hospitals have been successfully treated with these tissues. This paper presents a brief description of the tissue processing, as well as the present Mexican clinical experience with children and adult patients who underwent medical treatment with radiosterilized amnion and pig skin, used as biological wound dressings on burns and ocular surface disorders.

Biological wound dressings sterilized with gamma radiation: Mexican clinical experience

International Nuclear Information System (INIS)

Martinez-Pardo, M.E.; Ley-Chavez, E.; Reyes-Frias, M.L.; Rodriguez-Ferreyra, P.; Vazquez-Maya, L.; Salazar, M.A.

2007-01-01

Biological wound dressings sterilized with gamma radiation, such as amnion and pig skin, are a reality in Mexico. These tissues are currently processed in the tissue bank and sterilized in the Gamma Industrial Irradiation Plant; both facilities belong to the Instituto Nacional de Investigaciones Nucleares (ININ) (National Institute of Nuclear Research). With the strong support of the International Atomic Energy Agency, the bank was established at the ININ and the Mexican Ministry of Health issued its sanitary license on July 7, 1999. The Quality Management System of the bank was certified by ISO 9001:2000 on August 1, 2003; the scope of the system is 'Research, Development and Processing of Biological Tissues Sterilized with Gamma Radiation'. At present, more than 150 patients from 16 hospitals have been successfully treated with these tissues. This paper presents a brief description of the tissue processing, as well as the present Mexican clinical experience with children and adult patients who underwent medical treatment with radiosterilized amnion and pig skin, used as biological wound dressings on burns and ocular surface disorders

Veri Madenciliğinin Finansal Kararlarda Kullanımı

Directory of Open Access Journals (Sweden)

Mehmet ÖZKAN

2014-04-01

Full Text Available Çağımız bilgi çağı olup, her türlü bilgiye sahip olmayı gerektirmektedir. Veri içinden analizler yapılarak anlamlı örüntüler çıkartıldığında pek çok kimse tarafından bilinmeyen, rakiplerin önüne geçilmesini olanak veren anlamlı bilgiler elde edilebilir. İlgili yöntemler, şirketlerin finansal göstergeleri olan finansal tablolara uygulandığında, şirketlerin finansal davranışlarına ait faydalı bilgiler elde etmek mümkün olacaktır. Veri madenciliği, finansal analiz yöntemleri olarak çok yaygın kullanılan yatay analiz, dikey analiz, eğilim yüzdeleri analizi ve oran analizinin yanında beşinci finansal analiz yöntemidir. Veri madenciliğinin söz konusu bu analiz tekniklerine göre daha üstün olmasının nedeni, çok yoğun verileri kullanabilmesi ve pek çok kimse tarafından bilinmeyen bilgileri kullanıma sunmayı amaçlamasıdır. Veri madenciliğinin uygulanmasında en önemli iki kısıt; veri madenciliği ve veri madenciliğinin uygulanacağı alan bilgisine sahip uzman bulmaktaki zorluk ile kullanılacak bilgisayar yazılım ve donanımının oldukça maliyetli olmasıdır.

Thermoluminescent dosimetry in two laboratories of the ININ

International Nuclear Information System (INIS)

Cejudo, R.; Gonzalez, P.R.; Azorin N, J.

2002-01-01

The effects of the high doses of radiation are well known, but the effects caused by the exposure to low level radiations do not. However it is well known that the dose by small scale what this was as long as it comes from the ionizing radiation it has the enough energy for altering the normal performance of the cells in the living beings. In this work the obtained results in the measurement of the radiation levels in two laboratories of the ININ are presented. One of them located in the Gamma source building (FG) and the other one is now know as Connected to Basic and Environmental Sciences (ACBA). This work was motivated by the nonconformist personnel which works in the last laboratory, since this place was used during many years as warehouse of radioactive wastes, therefore it is expected that the dose levels were higher. The dose was measured with Tl of CaSO 4 :Dy + Ptfe dosemeters developed in the ININ. The results showed that the radiation levels in both laboratories are similar and they are under of the recommended levels for public in general, except a point in ACBA where the dose exceeded in a 64% that value. (Author)

Report 1986/1987. Department of Nuclear Engineering and Applied Research; Informe 1986/1987. Departamento de Ingenieria Nuclear e Investigacion Aplicada

Energy Technology Data Exchange (ETDEWEB)

1990-12-31

The objective of the Department of Applied Research is to carry out research on fields of physics, materials sciences, chemistry and engineering. Some branches of research can be mentioned: high Tc superconductors, hydrogen storage in metallic hydrides, extractive metallurgy of strategic minerals and others. In the first case, both the Development Division and the Thermodynamics group in the Metallurgy Division, have actively participated. [Espanol] El Dpto. de Investigacion Aplicada tiene como objetivo realizar investigacion en campos de la fisica, ciencias de materiales, quimica e ingenieria. Se pueden citar nuevas lineas de trabajo, entre ellos: los superconductores ceramicos de alta temperatura critica, el almacenamiento de hidrogeno en hidruros metalicos, el desarrollo de una servo-cuna computarizada, la metalurgia extractiva de materiales estrategicos y otros. En el primer caso han participado activamente la Div. Desarrollo y el Grupo de Termodinamica de la Division Metalurgia.

Hydrogen like energy and materials for fuel cells; Hidrogeno como energetico y materiales para celdas de combustible

Energy Technology Data Exchange (ETDEWEB)

Fernandez V, S. M., E-mail: suilma.fernandez@inin.gob.m [ININ, Departamento de Quimica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

The researches on the production, storage and the use of hydrogen like fuel or energy carrying are carried out in several laboratories around the world. In the Instituto Nacional de Investigaciones Nucleares (ININ), from the year of 1993 they are carried out researches about the synthesis of electro-catalysts materials than can serve in the hydrogen production starting from the electrolysis of the water, or in fuel cells, as well as of semiconductor materials for the photo-electrolysis of the water. Recently, in collaboration with other Departments of the ININ, the hydrogen production has been approached starting from fruit and vegetable wastes, with the purpose of evaluating the possibility that this residuals can be utilized for the energy obtaining and that they are not only garbage that causes problems of environmental pollution, generate toxic gases and pollute the soil with the organic acids that take place during their fermentation. (Author)

Hydrogen like energy and materials for fuel cells

International Nuclear Information System (INIS)

Fernandez V, S. M.

2010-01-01

The researches on the production, storage and the use of hydrogen like fuel or energy carrying are carried out in several laboratories around the world. In the Instituto Nacional de Investigaciones Nucleares (ININ), from the year of 1993 they are carried out researches about the synthesis of electro-catalysts materials than can serve in the hydrogen production starting from the electrolysis of the water, or in fuel cells, as well as of semiconductor materials for the photo-electrolysis of the water. Recently, in collaboration with other Departments of the ININ, the hydrogen production has been approached starting from fruit and vegetable wastes, with the purpose of evaluating the possibility that this residuals can be utilized for the energy obtaining and that they are not only garbage that causes problems of environmental pollution, generate toxic gases and pollute the soil with the organic acids that take place during their fermentation. (Author)

8. Seminar of the IMP-IIE-ININ on technological specialties. Topic 10: Earth Sciences; 8. Seminario IMP-IIE-ININ sobre especialidades tecnologicas. Mesa 10: Ciencias de la Tierra

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-12-31

The document contains two papers within INIS subject scope which were presented at the 8th Seminar of the IMP-IIE-ININ on technological specialties. Topic 10: Earth Sciences. A separate abstract was prepared for each paper.

Proton/gamma relative thermoluminescence efficiencies of LiF:Mg,Cu,P+PTFE prepared at ININ and TLD-100H

International Nuclear Information System (INIS)

Avila, O.; Gonzalez, P.; Murillo, G.

2009-10-01

Properties of LiF:Mg,Cu,P+PTFE dosemeters developed at ININ have been investigated in order to evaluate their performance compared to those of equivalent commercial dosemeters. In this work both LiF:Mg,Cu,P+PTFE and TLD-100H pellets were exposed to low fluence 3 MeV protons and to low dose gamma radiation to evaluate experimental proton/gamma efficiencies. Gamma irradiation was performed using the Vic krad irradiator at ININ at varying doses between 25 and 500 mGy. For proton irradiation the Tandem Van de Graaff accelerator at ININ was used. Dosemeters were placed on a holder inside a scattering chamber where protons impinge on a gold target and scatter in all directions. The holder allows for several angular positions so that dosemeters receive proton fluence between 10 6 and 10 1 0 p/cm 2 . Experimental efficiency values found for LiF:Mg,Cu,P+PTFE and TLD-100H were 0.18 +- 03 and 0.23 +- 0.03, respectively. These results allow to confirm the reliability of the dosemeters developed at ININ. (Author)

Nuclear Information and Documentation Center (CIDN): in search for excellence

International Nuclear Information System (INIS)

Romandia G, M.R.L.

1994-01-01

The present situation in the National Institute of Nuclear Research (ININ) implies both the organic reestructuration and the redefinition of objectives: in congruence with this evolution, the nuclear information and documentation center (CIDN) has to be adapted to the information needs that will require the new researching lines and at the same time look for the operating excellence in its services and activities. This paper is made with the purpose to do some considerations and proposals about the internal organization of CIDN through the quality circles and actions intended to reinforce the work perform by the information centers network of energetic sector (IMP, ININ, IIE). (Author)

Operational tests and irradiation programming proposal for the industrial production of 131 I in the TRIGA Mark III reactor of the Nuclear Centre (ININ)

International Nuclear Information System (INIS)

Alanis M, J.; Reyes J, J.L.; Ruiz C, M.A.

2003-01-01

In the National Institute of Nuclear Research it was recently finished the project for the production of I-131 at industrial level, the one which can divide basically in: (a) Preparation of the raw materials (TeO 2 ), (b) Sintering, (c) Neutron irradiation and (d) Separation of the I-131. With the end of starting the industrial production of this process, in this work it is presented the operational tests and an irradiation proposal of the TeO 2 to obtain quantities of I-131 that cover, if not totally, partially the national market. For this, they were carried out irradiation tests of 6 samples to different flows of neutrons. The result of these tests settles down that irradiating a mass of 240 g TeO 2 to a neutron flow of 6.53 x 10 12 n/cm 2 s in 4 cycles of 30 h per week approximately 2.54 Ci/week of I-131 distilled are obtained, which represents 35% of the demand of the Plant of Radioisotopes production of the ININ. (Author)

Computer aided design (CAD) for electronics improvement of the nuclear channels of TRIGA Mark III reactor of the ININ; Diseno asistido por computadora (DAC) para mejorar la electronica de los canales nucleares del reactor TRIGA Mark III del ININ

Energy Technology Data Exchange (ETDEWEB)

Gonzalez M, J.L.; Rivero G, T.; Aguilar H, F. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico)]. e-mail: jlgm@nuclear.inin.mx

2007-07-01

The 4 neutron measurement channels of the digital control console (CCD) of the TRIGA Mark III reactor (RTMIII) of the ININ, its were designed and built with the corresponding Quality Guarantee program, being achieved the one licensing to replace the old console. With the time they were carried out some changes to improve and to not solve some problems detected in the tests, verification and validation, requiring to modify the circuits originally designed. In this work the corrective actions carried out to eliminate the Non Conformity generated by these problems, being mentioned the advantages of using modern tools, as the software applied to the Attended Engineering by Computer, and those obtained results are presented. (Author)

7. Seminar of the IIE-ININ-IMP on technological specialties. Topic 10: Information Services; 7. Seminario IIE-ININ-IMP sobre especialidades tecnologicas. Mesa 10. Servicios de informacion.

Energy Technology Data Exchange (ETDEWEB)

NONE

1994-12-31

The document includes 10 papers presented at the 7. Seminar of the IIE-IMP-ININ (Mexico) on technological specialities in the field of information services (Topic 10). Three items were in INIS subject scope and a separate abstract was prepared for each of them.

Main activities carried out for the conversion of the reactor core TRIGA, from HEU 8.5/70 / LEU 8.5/20 to LEU 30/20; Principales actividades llevadas a cabo para la conversion del nucleo del reactor TRIGA, de HEU 8.5/70 / LEU 8.5/20 a LEU 30/20

Energy Technology Data Exchange (ETDEWEB)

Flores C, J., E-mail: jorge.floresc@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2012-10-15

In agreement with the policies of the global initiative of threats reduction (GTRI), Mexico committed that inside the reduction program of the fuel enrichment in research and test reactors (RERTR), the conversion of the core reactor TRIGA (in the nuclear centre) would be made, to use solely fuel with low enrichment ({<=} 20% U{sup 235}). To support to the execution of this commitment, a series of accords and agreements were established. The Project Agreement and Supply among the IAEA, the United States of America and Mexico was the more relevant. In this work the main activities carried out in the Instituto Nacional de Investigaciones Nucleares (ININ) with this purpose are presented. (Author)

Memoir 1985. Instituto Nacional de Investigaciones Nucleares

International Nuclear Information System (INIS)

1985-01-01

A brief review of the National Institute of Nuclear Research is given and its activities in 1985 summarized, among which were the Institute's fabrication of nuclear fuel rods, advisory and technical support of the national nucleoelectric program, encouragement of the utilization of nuclear techniques in farming, livestock breeding, industry and health, improving processes in radioisotope production, construction of a metrology building for ionizing radiation measurement, training of manpower for the nucleoelectric industry, for applying nuclear techniques, and the assemblying of a pelletron electron accelerator. (m.r.)

The impact of the International Atomic Energy Agency (IAEA) program on radiation and tissue banking in Mexico.

Science.gov (United States)

Martínez-Pardo, María Esther; Morales Pedraza, Jorge; Sánchez Ramírez, Omar

2009-05-01

Tissue banking started in Mexico in 1948-1949, when two bone banks were established, one at the Infantile Hospital of Mexico and other at the Central Military Hospital. Mexico has benefited for the implementation of the IAEA program since through it has been able to settle down and to consolidate the Tissue Bank at the Instituto Nacional de Investigaciones Nucleares ININ (National Institute for Nuclear Research). This is the only bank in Latin America that has a Quality Management System in force, certified under ISO 9001:2000 since August 1, 2003. The first tissue processed was amnion. The main products of the BTR are amnion and pig skin. Both are biological tissues which their main use is as a wound dressing in patients with burns, scars, diabetic ulcers, epidermolysis bullosa, damaged ocular surface, etc. The General Health Law, published in 1984 and reformed in June 19, 2007, describes the procedure for the disposal of organs, tissues and human cadavers in its fourteenth title and in the Regulation for Sanitary Control. During the period 2001-2005, the ININ Tissue Bank produced 292 sterilised tissues (amnion, 86,668 cm(2), and frozen pig skin, 164,220 cm(2), at an estimated cost of 1,012,668 Mexican pesos. Until 2006, one hundred eighty five (185) patients have been treated with the use of sterilised tissues produced by the ININ Tissue Bank. The radiation source used for sterilisation of tissues is an industrial Cobalt-60 irradiator model JS-6500 AECL, which belongs to ININ. This equipment is located in other building, close to the BTR, in the Centro Nuclear de México "Dr. Nabor Carrillo Flores" (Nuclear Center of Mexico). Until 2006, six hospitals use in a routine way the sterilised tissues produced by the ININ Tissue Bank, for the treatment of burns originated by diverse agents like flame, electricity, liquids in boil, chemical reagents, as well as for the reconstruction of the ocular surface. Two of these hospitals treat patients of very low economic

Final report of the inter institutional project ININ-CNSNS 'Source Terms specific for the CNLV'; Informe final del proyecto interinstitucional ININ-CNSNS 'Termino Fuente especifico para la CNLV'

Energy Technology Data Exchange (ETDEWEB)

Anaya M, R.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

1991-02-15

The purpose of the project inter institutional ININ-CNSNS 'Source Terms Specifies for the CNLV' it is the one of implanting in the computer CYBER (CDC 180-830) of the ININ, the 'Source Term Code Package' (STCP) and to make the operation tests and corresponding operation using the data of the sample problem, for finally to liberate the package, all time that by means of the analysis of the results it is consider appropriate. In this report the results of the are presented simulation of the sequence 'Energy Losses external' (Station blackout) and 'Lost total of CA with failure of the RCIC and success of the HPCS' both with data of the Laguna Verde Central. (Author)

7. Seminar of the IIE-IMP-ININ on technological specialities. Topic 8: Analytical Chemistry; 7. Seminario IIE-IMP-ININ sobre especialidades tecnologicas. Mesa 8: Quimica Analitica

Energy Technology Data Exchange (ETDEWEB)

NONE

1994-12-31

With the purpose to give continuity to the exchange of experiences and to impel the development of common specialties among IIE-ININ-IMP, the VII Seminary was held in Mexico City on September 7, 1994. In the event were present 163 researchers of the three participant Institutions as well as representative persons of invited institutions. The objective of this Seminary was to relate the researchers of a common branch, with the idea that the specialists made an exchange of experiences, in order to establish cooperation routes. The event was arranged in 11 working tables, with a total of 111 papers: 43 of these papers were from IIE, 42 from IMP, 22 from ININ and 4 from invited entities. During the Seminary, the 11 working tables has sessions simultaneously, and each one of the papers were discussed at the time that possible future cooperating inter institutional actions were examined. The conclusions of the Seminary were exposed in a plenary session, in the presence of the directing boards of the three participant Institutions.

AZTLAN platform: Mexican platform for analysis and design of nuclear reactors; AZTLAN platform: plataforma mexicana para el analisis y diseno de reactores nucleares

Energy Technology Data Exchange (ETDEWEB)

Gomez T, A. M.; Puente E, F. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Del Valle G, E. [IPN, Escuela Superior de Fisica y Matematicas, Av. IPN s/n, Edif. 9, Col. San Pedro Zacatenco, 07738 Mexico D. F. (Mexico); Francois L, J. L.; Martin del Campo M, C. [UNAM, Facultad de Ingenieria, Departamento de Sistemas Energeticos, Paseo Cuauhnahuac 8532, 62550 Jiutepec, Morelos (Mexico); Espinosa P, G., E-mail: armando.gomez@inin.gob.mx [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco No. 186, Col. Vicentina, 09340 Mexico D. F. (Mexico)

2014-10-15

The Aztlan platform Project is a national initiative led by the Instituto Nacional de Investigaciones Nucleares (ININ) which brings together the main public houses of higher studies in Mexico, such as: Instituto Politecnico Nacional, Universidad Nacional Autonoma de Mexico and Universidad Autonoma Metropolitana in an effort to take a significant step toward the calculation autonomy and analysis that seeks to place Mexico in the medium term in a competitive international level on software issues for analysis of nuclear reactors. This project aims to modernize, improve and integrate the neutron, thermal-hydraulic and thermo-mechanical codes, developed in Mexican institutions, within an integrated platform, developed and maintained by Mexican experts to benefit from the same institutions. This project is financed by the mixed fund SENER-CONACYT of Energy Sustain ability, and aims to strengthen substantially to research institutions, such as educational institutions contributing to the formation of highly qualified human resources in the area of analysis and design of nuclear reactors. As innovative part the project includes the creation of a user group, made up of members of the project institutions as well as the Comision Nacional de Seguridad Nuclear y Salvaguardias, Central Nucleoelectrica de Laguna Verde (CNLV), Secretaria de Energia (Mexico) and Karlsruhe Institute of Technology (Germany) among others. This user group will be responsible for using the software and provide feedback to the development equipment in order that progress meets the needs of the regulator and industry; in this case the CNLV. Finally, in order to bridge the gap between similar developments globally, they will make use of the latest super computing technology to speed up calculation times. This work intends to present to national nuclear community the project, so a description of the proposed methodology is given, as well as the goals and objectives to be pursued for the development of the

The Instituto de Investigaciones Electricas fluidized bed combustor; El combustor de lecho fluidizado del Instituto de Investigaciones Electricas

Energy Technology Data Exchange (ETDEWEB)

Milan Foressi, Julio [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1991-12-31

After synthesizing the most important aspects of the combustion technology in fluidized bed, the experimental combustor developed at the Instituto de Investigaciones Electricas (IIE) is described, as well as the test results of the experiences carried out with coal from Rio Escondido, Coahuila. [Espanol] Tras sintetizar los aspectos mas importantes de la tecnologia de combustion en lecho fluidizado, se describe el combustor experimental desarrollado en el Instituto de Investigaciones Electricas (IIE), asi como los resultados de las experiencias realizadas con carbon proveniente de Rio Escondido, Coahuila.

The Instituto de Investigaciones Electricas fluidized bed combustor; El combustor de lecho fluidizado del Instituto de Investigaciones Electricas

Energy Technology Data Exchange (ETDEWEB)

Milan Foressi, Julio [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1992-12-31

After synthesizing the most important aspects of the combustion technology in fluidized bed, the experimental combustor developed at the Instituto de Investigaciones Electricas (IIE) is described, as well as the test results of the experiences carried out with coal from Rio Escondido, Coahuila. [Espanol] Tras sintetizar los aspectos mas importantes de la tecnologia de combustion en lecho fluidizado, se describe el combustor experimental desarrollado en el Instituto de Investigaciones Electricas (IIE), asi como los resultados de las experiencias realizadas con carbon proveniente de Rio Escondido, Coahuila.

Committees and sponsors

Science.gov (United States)

2011-10-01

International Advisory Committee Richard F CastenYale, USA Luiz Carlos ChamonSão Paulo, Brazil Osvaldo CivitareseLa Plata, Argentina Jozsef CsehATOMKI, Hungary Jerry P DraayerLSU, USA Alfredo Galindo-UribarriORNL & UT, USA James J KolataNotre Dame, USA Jorge López UTEP, USA Joseph B NatowitzTexas A & M, USA Ma Esther Ortiz IF-UNAM Stuart PittelDelaware, USA Andrés SandovalIF-UNAM Adam SzczepaniakIndiana, USA Piet Van IsackerGANIL, France Michael WiescherNotre Dame, USA Organizing Committee Libertad Barrón-Palos (Chair)IF-UNAM Roelof BijkerICN-UNAM Ruben FossionICN-UNAM David LizcanoININ Sponsors Instituto de Ciencias Nucleares, UNAMInstituto de Física, UNAMInstituto Nacional de Investigaciones NuclearesDivisión de Física Nuclear de la SMFCentro Latinoamericano de Física

$\\phi$ Production in In-In Collisions at 158 A GeV

CERN Document Server

Arnaldi, R; Borer, K; Castor, J; Chaurand, B; Chen, W; Cicalò, C; Colla, A; Cortese, P; Damjanovic, S; David, A; de Falco, A; Devaux, A; Ducroux, L; En’yo, H; Fargeix, J; Ferretti, A; Floris, M; Förster, A; Force, P; Guettet, N; Guichard, A; Gulkanyan, H; Heuser, J; Keil, M; Kluberg, L; Li, Z; Lourenço, C; Lozano, J; Manso, F; Martins, P; Masoni, A; Neves, A; Ohnishi, H; Oppedisano, C; Parracho, P; Pillot, P; Poghosyan, T; Puddu, G; Radermacher, E; Ramalhete, P; Rosinsky, P; Scomparin, E; Seixas, J; Serci, S; Shahoyan, R; Sonderegger, P; Specht, H J; Tieulent, R; Uras, A; Usai, G; Veenhof, R; Wöhri, H K

2009-01-01

The NA60 experiment has measured muon pair production in In-In collisions at 158 AGeV at the CERN SPS. This paper presents a high statistics measurement of $\\phi\\to\\mu\\mu$ meson production. Differential spectra, yields, mass and width are measured as a function of centrality and compared to previous measurements in other colliding systems at the same energy. The width of the rapidity distribution is found to be constant as a function of centrality, compatible with previous results. The decay muon polar angle distribution is measured in several reference frames. No evidence of polarization is found as a function of transverse momentum and centrality. The analysis of the $p_{T}$ spectra shows that the $\\phi$ has a small radial flow, implying a weak coupling to the medium. The $T_{eff}$ parameter measured in In-In collisions suggests that the high value observed in Pb-Pb in the kaon channel is difficult to reconcile with radial flow alone. The absolute yield is compared to results in Pb-Pb collisions: though sig...

Evaluation system of Research and Development projects and services from ININ

International Nuclear Information System (INIS)

Reglero, R.

1994-01-01

To make a plan for a project is one thing; to control it are a hundred things at the same time. Because of this fact, the enterprises and Research and Development Institutions have searched better ways to manage this activities. The management system of Research and Development projects and services from ININ, is used as a recording, evaluation tracking, information and control of result instrument for these activities. The need to have update information of different activities in the working areas of ININ, such as: Projects, technical or technological services either internal or external; diffusion programs and human resources training programs; and departmental activities, has taken to the development of uniform methods of recording, evaluation tracking and control of events, which allow the standardization, compilation, analysis and reporting of the results in an easy and quick way. The elaboration of an original scheme for the evaluation system of assessment for Research and Development projects and services was started in July 1988, and the data acquisition was manual. The use of Personal Computers began at 1992. (Author)

Final report of the inter institutional project ININ-CNSNS 'Source Terms specific for the CNLV'

International Nuclear Information System (INIS)

Anaya M, R.A.

1991-02-01

The purpose of the project inter institutional ININ-CNSNS 'Source Terms Specifies for the CNLV' it is the one of implanting in the computer CYBER (CDC 180-830) of the ININ, the 'Source Term Code Package' (STCP) and to make the operation tests and corresponding operation using the data of the sample problem, for finally to liberate the package, all time that by means of the analysis of the results it is consider appropriate. In this report the results of the are presented simulation of the sequence 'Energy Losses external' (Station blackout) and 'Lost total of CA with failure of the RCIC and success of the HPCS' both with data of the Laguna Verde Central. (Author)

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 4: dynamics

International Nuclear Information System (INIS)

1992-01-01

The document includes 7 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of dynamics. (Topic 4). One item was in INIS subject scope and a separate abstract was prepared for it

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 8: computation

International Nuclear Information System (INIS)

1992-01-01

The document includes 10 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of computation. (Topic 8). Three items were in INIS subject scope and a separate abstract was prepared for each of them

Proposals for an effective application of the continuous improvement at the ININ according to the IAEA 50-C/SG-Q new code; Propuestas para una aplicacion efectiva del proceso de mejora continua en el ININ, de acuerdo al nuevo codigo 50-C/SG-Q del OIEA

Energy Technology Data Exchange (ETDEWEB)

Cardenas A, B.M.; Olivares O, L.A. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

1997-07-01

This work contains the requirements of continuous improvement contained in the IAEA new code {sup Q}uality assurance for safety in nuclear power plants and other nuclear installations, code 50-C/SG-Q. Assuming that it was the base for to elaborate the review No. 5 of the Quality assurance plan at ININ, it was done an analysis to give proposals for the application of continuous improvement in effective way. The relevant points which must be taken in account at the continuous improvement process are: Direction responsibility, involucring of all personnel, process planning, education and training, elaboration of improvement projects, investigation of processes which can be improved, continuation of the improvement process and its evaluation. With the implantation of an effective continuous improvement system it will be obtained to get a better quality and a more efficient safety. (Author)

AZTLAN platform: Mexican platform for analysis and design of nuclear reactors

International Nuclear Information System (INIS)

Gomez T, A. M.; Puente E, F.; Del Valle G, E.; Francois L, J. L.; Martin del Campo M, C.; Espinosa P, G.

2014-10-01

The Aztlan platform Project is a national initiative led by the Instituto Nacional de Investigaciones Nucleares (ININ) which brings together the main public houses of higher studies in Mexico, such as: Instituto Politecnico Nacional, Universidad Nacional Autonoma de Mexico and Universidad Autonoma Metropolitana in an effort to take a significant step toward the calculation autonomy and analysis that seeks to place Mexico in the medium term in a competitive international level on software issues for analysis of nuclear reactors. This project aims to modernize, improve and integrate the neutron, thermal-hydraulic and thermo-mechanical codes, developed in Mexican institutions, within an integrated platform, developed and maintained by Mexican experts to benefit from the same institutions. This project is financed by the mixed fund SENER-CONACYT of Energy Sustain ability, and aims to strengthen substantially to research institutions, such as educational institutions contributing to the formation of highly qualified human resources in the area of analysis and design of nuclear reactors. As innovative part the project includes the creation of a user group, made up of members of the project institutions as well as the Comision Nacional de Seguridad Nuclear y Salvaguardias, Central Nucleoelectrica de Laguna Verde (CNLV), Secretaria de Energia (Mexico) and Karlsruhe Institute of Technology (Germany) among others. This user group will be responsible for using the software and provide feedback to the development equipment in order that progress meets the needs of the regulator and industry; in this case the CNLV. Finally, in order to bridge the gap between similar developments globally, they will make use of the latest super computing technology to speed up calculation times. This work intends to present to national nuclear community the project, so a description of the proposed methodology is given, as well as the goals and objectives to be pursued for the development of the

8. Seminar of the IMP-IIE-ININ on technological specialties. Topic 10: Earth Sciences

International Nuclear Information System (INIS)

1996-01-01

The document contains two papers within INIS subject scope which were presented at the 8th Seminar of the IMP-IIE-ININ on technological specialties. Topic 10: Earth Sciences. A separate abstract was prepared for each paper

Computer aided design (CAD) for electronics improvement of the nuclear channels of TRIGA Mark III reactor of the ININ

International Nuclear Information System (INIS)

Gonzalez M, J.L.; Rivero G, T.; Aguilar H, F.

2007-01-01

The 4 neutron measurement channels of the digital control console (CCD) of the TRIGA Mark III reactor (RTMIII) of the ININ, its were designed and built with the corresponding Quality Guarantee program, being achieved the one licensing to replace the old console. With the time they were carried out some changes to improve and to not solve some problems detected in the tests, verification and validation, requiring to modify the circuits originally designed. In this work the corrective actions carried out to eliminate the Non Conformity generated by these problems, being mentioned the advantages of using modern tools, as the software applied to the Attended Engineering by Computer, and those obtained results are presented. (Author)

Concretes characterization for spent radioactive sources

International Nuclear Information System (INIS)

Martinez B, J.; Monroy G, F. P.

2013-10-01

The present work includes the preparation and characterization of the concrete used as conditioning matrix of spent radioactive sources in the Treatment Plant of Radioactive Wastes of the Instituto Nacional de Investigaciones Nucleares (ININ). The concrete tests tubes were subjected to resistance assays to the compression, leaching, resistance to the radiation and porosity, and later on characterized by means of X rays diffraction, scanning electron microscopy and infrared spectrometry, with the purpose of evaluating if this concrete accredits the established tests by the NOM-019-Nucl-1995. The results show that the concrete use in the Treatment Plant fulfills the requirements established by the NOM-019-Nucl-1995. (author)

Proposals for an effective application of the continuous improvement at the ININ according to the IAEA 50-C/SG-Q new code

International Nuclear Information System (INIS)

Cardenas A, B.M.; Olivares O, L.A.

1997-01-01

This work contains the requirements of continuous improvement contained in the IAEA new code Q uality assurance for safety in nuclear power plants and other nuclear installations, code 50-C/SG-Q. Assuming that it was the base for to elaborate the review No. 5 of the Quality assurance plan at ININ, it was done an analysis to give proposals for the application of continuous improvement in effective way. The relevant points which must be taken in account at the continuous improvement process are: Direction responsibility, involucring of all personnel, process planning, education and training, elaboration of improvement projects, investigation of processes which can be improved, continuation of the improvement process and its evaluation. With the implantation of an effective continuous improvement system it will be obtained to get a better quality and a more efficient safety. (Author)

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 7: energy savings

International Nuclear Information System (INIS)

1992-01-01

The document includes 6 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of energy savings. (Topic 7). One item was in INIS subject scope and a separate abstract was prepared for it

Revista Investigacion Educativa, 1992-1995.

Science.gov (United States)

Revista Investigacion Educativa, 1995

1995-01-01

This document consists of the eight issues of the series "Revista Investigacion Educativa" published during the 4-year period 1992-1995. This review of educational investigation seeks to promote the exchange of information about empirical research in education. It is published semiannually, and includes reports of both quantitative and…

CICTAMEX Memory 1991

International Nuclear Information System (INIS)

Centro de Investigaciones Cientificas y Tecnologicas del Aguacate en el Estado de Mexico.

1991-01-01

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado

CICTAMEX Memory 1993

International Nuclear Information System (INIS)

Martin Rubi Arriaga.

1993-01-01

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado

CICTAMEX Memory 1991; Memoria 1991 CICTAMEX

Energy Technology Data Exchange (ETDEWEB)

1992-12-31

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado.

CICTAMEX Memory 1992; Memoria CICTAMEX 1992

Energy Technology Data Exchange (ETDEWEB)

Centro de Investigaciones Cientificas y Tecnologicas del Aguacate en el Estado de Mexico

1993-12-31

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado.

CICTAMEX Memory 1993; Memoria CICTAMEX 1993

Energy Technology Data Exchange (ETDEWEB)

Arriaga, Martin Rubi

1994-12-31

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado.

CICTAMEX Memory 1990; Memoria 1990 CICTAMEX

Energy Technology Data Exchange (ETDEWEB)

la Cruz Torres, Eulogio de [Centro de Investigaciones Cientificas y Tecnologicas del Aguacate en el Estado de (Mexico)

1991-12-31

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado.

Neutronic calculations in core conversion of the IAN-R1 research reactor from MTR HEU to TRIGA LEU fuel

International Nuclear Information System (INIS)

Sarta Fuentes, Jose A.; Castiblanco, L.A.

2003-01-01

With cooperation of the International Atomic Energy Agency (IAEA), neutronic calculations were carried out for conversion of the Ian-R1 Reactor from MTR-HEU fuel to TRIGA-LEU fuel. In order to establish a staff for neutronic calculation at the Instituto de Cancan's Nucleares y Energia s Alternatives (INEA) a program was established. This program included training, acquisition of hardware, software and calculation for the core with MTR-HEU fuel , enriched nominally to 93% and calculation for several arrangements with the TRIGA-LEU fuel, enriched to 19.7%. The results were verified and compared with several groups of calculation at the Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico, and General Atomics (GA) in United States. As a result of this program, several technical reports have been wrote. (author)

CICTAMEX Memory 1990

International Nuclear Information System (INIS)

Eulogio de la Cruz Torres

1990-01-01

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado

CICTAMEX Memory 1992

International Nuclear Information System (INIS)

Centro de Investigaciones Cientificas y Tecnologicas del Aguacate en el Estado de Mexico.

1992-01-01

The avocado agriculture industry at National and International levels is confronted to low yields which are due among other aspects to the high costs of products originated by the height of the tree as well as its foliage which difficults the harvest, low cultural customs of the harvesters and to the overrating of the phyto sanitary control. This has been originated by the actual research trends over avocado at all world level since the research has been oriented to the obtention of dwarf tree varieties with the advantages that this offers. The Salvador Sanchez Colin CICTAMEX Foundation is developing a genetic improvement program with the support of the Instituto Nacional de Investigaciones Nucleares (ININ) by means of the pacific uses of nuclear energy on fruits principally the avocado

7. Seminar of the IIE-ININ-IMP on technological specialties. Topic 10: Information Services

International Nuclear Information System (INIS)

1994-01-01

The document includes 10 papers presented at the 7. Seminar of the IIE-IMP-ININ (Mexico) on technological specialities in the field of information services (Topic 10). Three items were in INIS subject scope and a separate abstract was prepared for each of them

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 13: earth sciences

International Nuclear Information System (INIS)

1992-01-01

The document includes 12 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of earth sciences. (Topic 13). Four items were in INIS subject scope and a separate abstract was prepared for each of them

Nuclear instrumentation for research reactors; Instrumentacion nuclear para reactores nucleares de investigacion

Energy Technology Data Exchange (ETDEWEB)

Hofer, Carlos G.; Pita, Antonio; Verrastro, Claudio A.; Maino, Eduardo J. [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Unidad de Actividades de Reactores y Centrales Nucleares. Sector Instrumentacion y Control

1997-10-01

The nuclear instrumentation for research reactors in Argentina was developed in 70`. A gradual modernization of all the nuclear instrumentation is planned. It includes start-up and power range instrumentation, as well as field monitors, clamp, scram and rod movement control logic. The new instrumentation is linked to a computer network, based on real time operating system for data acquisition, display and logging. This paper describes the modules and whole system aspects. (author). 2 refs.

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 3: thermal fluids

International Nuclear Information System (INIS)

1992-01-01

The document includes 10 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of thermal fluids. (Topic 3). From these, 4 papers were in INIS subject scope and a separate abstract was prepared for each of them

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 6: environmental contamination

International Nuclear Information System (INIS)

1992-01-01

The document includes 10 papers presented at the 6. Seminar of the IIE-ININ-IMP on technological specialities in the field of environmental contamination (Topic 6). From these, 6 papers were in INIS subject scope and a separate abstract was prepared for each of these papers

The Text of a Regional Co-operative Agreement for Research, Development and Training related to Nuclear Science and Technology. Latest Status. Declarations/Reservations; Texto de un Acuerdo de Cooperacion Regional Para la Investigacion, el Desarrollo y la Capacitacion en Materia de Ciencias y Tecnologia Nucleares

Energy Technology Data Exchange (ETDEWEB)

NONE

1972-08-18

The text of a Regional Co-operative Agreement for Research, Development and Training Related to Nuclear Science and Technology between the Agency and Member States is reproduced herein for the information of all Members. Section 9 thereof specifies the Members that may become party to it [Spanish] Para conocimiento de todos los Estados Miembros en el presente documento se transcribe el texto de un Acuerdo de Cooperacion Regional para la investigacion, el desarrollo y la capacitacion en materia de ciencias y tecnologia nucleares entre el Organismo y los Estados Miembros. En la Seccion 9 se especifican los Estados Miembros que pueden ser partes en el Acuerdo.

8. Seminar of the IMP-IIE-ININ on technological specialties. Topic 9: Analytical Chemistry

International Nuclear Information System (INIS)

1996-01-01

The document includes four papers considered within the INIS subject scope, which were presented at the 8th Seminar of the IMP-IIE-ININ on technological specialities (Section Analytical Chemistry), held on 26 June 1996 in Cuernavaca (Mexico). A separate abstract and indexing were provided for each paper

Support to the elaboration of the engineering of detail, configuration and programming of the control system of heat removal of the TRIGA Mark III reactor

International Nuclear Information System (INIS)

Diaz G, C. A.

2016-01-01

Nowadays, the peaceful and responsible use of nuclear energy in Mexico is of great importance and contributes to economic, social, scientist and technologic development in the country, highlighting the Instituto Nacional de Investigaciones Nucleares (ININ) and the Nuclear Power Plant of Laguna Verde as one of the most important dependences. Among the main facilities and laboratories of ININ is the Nuclear Research Reactor TRIGA Mark III, this is a pool type reactor with mobile core, cooled and moderated by light water and a flow of 1013 n/cm"2/sec. Due to the technological obsolescence is a growing problem that threatens the information, operation and/or efficacy of elements of control and safety systems of the reactor, these must be changed each time more frequently. In the modernization of reactor was used a Modicon M340 programmable logic control (PLC) and a Twido PLC for the control of heat removal system (Primary Cooling System (PCS) and Secondary Cooling System (SCS) respectively), this because the PLC has proven to be safe and effective devices, addition to reduce the wiring elements and increase the possibilities of performance and design of the digital control console. This document shows and describes the elements of heat removal system (PCS and SCS), and the signals and signal types that such items send or received by the PLC, likewise, is indicated the methodology used to develop the applications for the control of the Primary Cooling System and Secondary Cooling System, beginning with the PLC design, the development of PLC plans and the control logic, and finally, the simulation and debugging of applications on Unity Pro and Twido Suite. All this in compliance with the safety standards to nuclear research reactors (NS-R-4), the rules of industrial programming (IEC 61131-3), and the reactor operating limits postulated in the safety report and the software assurance system used in the ININ. (Author)

Support to the elaboration of the engineering of detail, configuration and programming of the control system of heat removal of the TRIGA Mark III reactor; Apoyo a la elaboracion de la ingenieria de detalle, configuracion y programacion del sistema de control de remocion de calor del reactor Triga Mark III

Energy Technology Data Exchange (ETDEWEB)

Diaz G, C. A.

2016-07-01

Nowadays, the peaceful and responsible use of nuclear energy in Mexico is of great importance and contributes to economic, social, scientist and technologic development in the country, highlighting the Instituto Nacional de Investigaciones Nucleares (ININ) and the Nuclear Power Plant of Laguna Verde as one of the most important dependences. Among the main facilities and laboratories of ININ is the Nuclear Research Reactor TRIGA Mark III, this is a pool type reactor with mobile core, cooled and moderated by light water and a flow of 1013 n/cm{sup 2}/sec. Due to the technological obsolescence is a growing problem that threatens the information, operation and/or efficacy of elements of control and safety systems of the reactor, these must be changed each time more frequently. In the modernization of reactor was used a Modicon M340 programmable logic control (PLC) and a Twido PLC for the control of heat removal system (Primary Cooling System (PCS) and Secondary Cooling System (SCS) respectively), this because the PLC has proven to be safe and effective devices, addition to reduce the wiring elements and increase the possibilities of performance and design of the digital control console. This document shows and describes the elements of heat removal system (PCS and SCS), and the signals and signal types that such items send or received by the PLC, likewise, is indicated the methodology used to develop the applications for the control of the Primary Cooling System and Secondary Cooling System, beginning with the PLC design, the development of PLC plans and the control logic, and finally, the simulation and debugging of applications on Unity Pro and Twido Suite. All this in compliance with the safety standards to nuclear research reactors (NS-R-4), the rules of industrial programming (IEC 61131-3), and the reactor operating limits postulated in the safety report and the software assurance system used in the ININ. (Author)

φ production in In-In collisions at 158 A GeV

International Nuclear Information System (INIS)

Arnaldi, R.; Oppedisano, C.; Scomparin, E.; Banicz, K.; Damjanovic, S.; Borer, K.; Castor, J.; Devaux, A.; Fargeix, J.; Force, P.; Manso, F.; Chaurand, B.; Chen, W.; Li, Z.; Cicalo, C.; Masoni, A.; Colla, A.; Cortese, P.; Ferretti, A.; David, A.; Keil, M.; Martins, P.; Parracho, P.; Ramalhete, P.; Shahoyan, R.; Falco, A. de; Floris, M.; Puddu, G.; Serci, S.; Uras, A.; Usai, G.; Ducroux, L.; Guichard, A.; Pillot, P.; Tieulent, R.; En'yo, H.; Heuser, J.; Ohnishi, H.; Foerster, A.; Lourenco, C.; Radermacher, E.; Rosinsky, P.; Guettet, N.; Gulkanyan, H.; Poghosyan, T.; Kluberg, L.; Lozano, J.; Neves, A.; Seixas, J.; Sonderegger, P.; Specht, H.J.; Veenhof, R.

2009-01-01

The NA60 experiment has measured muon pair production in In-In collisions at 158 AGeV at the CERN SPS. This paper presents a high statistics measurement of φ→μμ meson production. Differential spectra, yields, mass and width are measured as a function of centrality and compared to previous measurements in other colliding systems at the same energy. The width of the rapidity distribution is found to be constant as a function of centrality, compatible with previous results. The decay muon polar angle distribution is measured in several reference frames. No evidence of polarization is found as a function of transverse momentum and centrality. The analysis of the p T spectra shows that the φ has a small radial flow, implying a weak coupling to the medium. The T eff parameter measured in In-In collisions suggests that the high value observed in Pb-Pb in the kaon channel is difficult to reconcile with radial flow alone. The absolute yield is compared to results in Pb-Pb collisions: though significantly smaller than measured by NA50 in the muon channel, it is found to exceed the NA49 and CERES data in the kaon channel at any centrality. The mass and width are found to be compatible with the PDG values at any centrality and at any p T : no evidence for in-medium modifications is observed. (orig.)

Results of Cable Aging Management Tests for Laguna Verde Nuclear Power Plant

International Nuclear Information System (INIS)

Garcia Hernandez, E.E.; Vazquez Cervantes, R.M.; Bonifacio M, J.; Garcia Garcia, J.

2012-01-01

Laguna Verde Nuclear Power Plant (LVNPP) located in Veracruz, Mexico is a BWR plant, two Units with 810 MWe each one, Unit 1 (1989) and Unit 2 (1990). The Equipment Qualification (EQ) Group at the Nuclear Research National Institute (ININ) has been working with the plant on tasks to develop the LVNPP cables Aging Management Program (AMP), as part of the technical basis to extend the operational life of the plant through license renewal up to 60 years. LVNPP cables are qualified for 40 years plus a LOCA DBA in accordance with 10.CFR 50.49 and the IEEE Std-323 and IEEE St. 383. The first studies for cables AMP have been performed with samples of safety related I and C cables taken from the LVNPP warehouse, similar brands and models as installed at the plant. ININ applied the condition monitoring techniques to these samples to identify predictive degradation and to establish the methodology for cables AMP, focused to the LVNPP license renewal. Cable tests program has been running at the EQ Lab in ININ, performing accelerated aging by steps up to 60 years and to 40 years plus a LOCA test. Determination for Activation Energy (Ea) and Oxidation Induction Time (OIT) methods were developed applying a DSC/TGA calorimeter. (author)

Circuits design of action logics of the protection system of nuclear reactor IAN-R1 of Colombia; Diseno de los circuitos de la logica de actuacion del sistema de proteccion del reactor nuclear IAN-R1 de Colombia

Energy Technology Data Exchange (ETDEWEB)

Gonzalez M, J. L.; Rivero G, T.; Sainz M, E., E-mail: joseluis.gonzalez@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2014-10-15

Due to the obsolescence of the instrumentation and control system of the nuclear research reactor IAN-R1, the Institute of Geology and Mining of Colombia, IngeoMinas, launched an international convoking for renewal it which was won by the Instituto Nacional de Investigaciones Nucleares (ININ). Within systems to design, the reactor protection system is described as important for safety, because this carried out, among others two primary functions: 1) ensuring the reactor shutdown safely, and 2) controlling the interlocks to protect against operational errors if defined conditions have not been met. To fulfill these functions, the various subsystems related to the safety report the state in which they are using binary signals and are connected to the inputs of two redundant logic wiring circuits called action logics (Al) that are part of the reactor protection system. These Al also serve as logical interface to indicate at all times the status of subsystems, both the operator and other systems. In the event that any of the subsystems indicates a state of insecurity in the reactor, the Al generate signals off (or scram) of the reactor, maintaining the interlock until the operator sends a reset signal. In this paper the design, implementation, verification and testing of circuits that make up the Al 1 and 2 of IAN-R1 reactor is described, considering the fulfillment of the requirements that the different international standards imposed on this type of design. (Author)

7. Seminar of the IIE-IMP-ININ on technological specialities. Topic 8: Analytical Chemistry

International Nuclear Information System (INIS)

1994-01-01

With the purpose to give continuity to the exchange of experiences and to impel the development of common specialties among IIE-ININ-IMP, the VII Seminary was held in Mexico City on September 7, 1994. In the event were present 163 researchers of the three participant Institutions as well as representative persons of invited institutions. The objective of this Seminary was to relate the researchers of a common branch, with the idea that the specialists made an exchange of experiences, in order to establish cooperation routes. The event was arranged in 11 working tables, with a total of 111 papers: 43 of these papers were from IIE, 42 from IMP, 22 from ININ and 4 from invited entities. During the Seminary, the 11 working tables has sessions simultaneously, and each one of the papers were discussed at the time that possible future cooperating inter institutional actions were examined. The conclusions of the Seminary were exposed in a plenary session, in the presence of the directing boards of the three participant Institutions

Circuits design of action logics of the protection system of nuclear reactor IAN-R1 of Colombia

International Nuclear Information System (INIS)

Gonzalez M, J. L.; Rivero G, T.; Sainz M, E.

2014-10-01

Due to the obsolescence of the instrumentation and control system of the nuclear research reactor IAN-R1, the Institute of Geology and Mining of Colombia, IngeoMinas, launched an international convoking for renewal it which was won by the Instituto Nacional de Investigaciones Nucleares (ININ). Within systems to design, the reactor protection system is described as important for safety, because this carried out, among others two primary functions: 1) ensuring the reactor shutdown safely, and 2) controlling the interlocks to protect against operational errors if defined conditions have not been met. To fulfill these functions, the various subsystems related to the safety report the state in which they are using binary signals and are connected to the inputs of two redundant logic wiring circuits called action logics (Al) that are part of the reactor protection system. These Al also serve as logical interface to indicate at all times the status of subsystems, both the operator and other systems. In the event that any of the subsystems indicates a state of insecurity in the reactor, the Al generate signals off (or scram) of the reactor, maintaining the interlock until the operator sends a reset signal. In this paper the design, implementation, verification and testing of circuits that make up the Al 1 and 2 of IAN-R1 reactor is described, considering the fulfillment of the requirements that the different international standards imposed on this type of design. (Author)

Artificial intelligence in nuclear reactor operation

International Nuclear Information System (INIS)

Da Ruan; Benitez-Read, J.S.

2005-01-01

Assessment of four real fuzzy control applications at the MIT research reactor in the US, the FUGEN heavy water reactor in Japan, the BR1 research reactor in Belgium, and a TRIGA Mark III reactor in Mexico will be examined through a SWOT analysis (strengths, weakness, opportunities, and threats). Special attention will be paid to the current cooperation between the Belgian Nuclear Research Centre (SCK·CEN) and the Mexican Nuclear Centre (ININ) on AI-based intelligent control for nuclear reactor operation under the partial support of the National Council for Science and Technology of Mexico (CONACYT). (authors)

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 15: commercialization and technology transfer

International Nuclear Information System (INIS)

1992-01-01

The document includes 9 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of commercialization and technology transfer. (Topic 15). One item was in INIS s ubject scope and a separate abstract was prepared for it

Development of tools to manage the operational monitoring and pre-design of the NPP-LV cycle

International Nuclear Information System (INIS)

Perusquia, R.; Arredondo S, C.; Hernandez M, J. L.; Montes T, J. L.; Castillo M, A.; Ortiz S, J. J.

2015-09-01

This paper presents the development of tools to facilitate the management so much, the operational monitoring of boiling water reactors (BWR) of the nuclear power plant of Laguna Verde (NPP-LV) through independent codes, and how to carry out the static calculations corresponding to process of optimized pre-design of the reference cycle next to current cycle. The progress and preliminary results obtained with the program SACal, developed at Instituto Nacional de Investigaciones Nucleares (ININ), central tool to achieve provide a management platform of the operational monitoring and pre-design of NPP-LV cycle are also described. The reached preliminary advances directed to get an Analysis center and automated design of fuel assembly cells are also presented, which together with centers or similar modules related with the fuel reloads form the key part to meet the targets set for the realization of a Management Platform of Nuclear Fuel of the NPP-LV. (Author)

Development of tools to manage the operational monitoring and pre-design of the NPP-LV cycle; Desarrollo de herramientas para administrar el seguimiento operativo y el pre-diseno del ciclo de la CLV

Energy Technology Data Exchange (ETDEWEB)

Perusquia, R.; Arredondo S, C.; Hernandez M, J. L.; Montes T, J. L.; Castillo M, A.; Ortiz S, J. J., E-mail: raul.perusquia@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2015-09-15

This paper presents the development of tools to facilitate the management so much, the operational monitoring of boiling water reactors (BWR) of the nuclear power plant of Laguna Verde (NPP-LV) through independent codes, and how to carry out the static calculations corresponding to process of optimized pre-design of the reference cycle next to current cycle. The progress and preliminary results obtained with the program SACal, developed at Instituto Nacional de Investigaciones Nucleares (ININ), central tool to achieve provide a management platform of the operational monitoring and pre-design of NPP-LV cycle are also described. The reached preliminary advances directed to get an Analysis center and automated design of fuel assembly cells are also presented, which together with centers or similar modules related with the fuel reloads form the key part to meet the targets set for the realization of a Management Platform of Nuclear Fuel of the NPP-LV. (Author)

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 9: electronics, instrumentation and control

International Nuclear Information System (INIS)

1992-01-01

The document includes 10 papers presented at the 6. Seminar of the IIE-ININ-IMP on technological specialities in the field of electronics, instrumentation and control. (Topic 9). From these, 4 papers were in INIS subject scope and a separate abstract was prepared for each of them

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 14: systems and infomation services

International Nuclear Information System (INIS)

1992-01-01

The document includes 9 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of information systems and services. (Topic 14). Two items were in INIS subject scope and a separate abstract was prepared for each of them

Generation of initial geometries for the simulation of the physical system in the DualPHYsics code

International Nuclear Information System (INIS)

Segura Q, E.

2013-01-01

In the diverse research areas of the Instituto Nacional de Investigaciones Nucleares (ININ) are different activities related to science and technology, one of great interest is the study and treatment of the collection and storage of radioactive waste. Therefore at ININ the draft on the simulation of the pollutants diffusion in the soil through a porous medium (third stage) has this problem inherent aspects, hence a need for such a situation is to generate the initial geometry of the physical system For the realization of the simulation method is implemented smoothed particle hydrodynamics (SPH). This method runs in DualSPHysics code, which has great versatility and ability to simulate phenomena of any physical system where hydrodynamic aspects combine. In order to simulate a physical system DualSPHysics code, you need to preset the initial geometry of the system of interest, then this is included in the input file of the code. The simulation sets the initial geometry through regular geometric bodies positioned at different points in space. This was done through a programming language (Fortran, C + +, Java, etc..). This methodology will provide the basis to simulate more complex geometries future positions and form. (Author)

Generation of initial geometries for the simulation of the physical system in the DualPHYsics code; Generacion de geometrias iniciales para la simulacion del sistema fisico en el codigo DualSPHysics

Energy Technology Data Exchange (ETDEWEB)

Segura Q, E.

2013-07-01

In the diverse research areas of the Instituto Nacional de Investigaciones Nucleares (ININ) are different activities related to science and technology, one of great interest is the study and treatment of the collection and storage of radioactive waste. Therefore at ININ the draft on the simulation of the pollutants diffusion in the soil through a porous medium (third stage) has this problem inherent aspects, hence a need for such a situation is to generate the initial geometry of the physical system For the realization of the simulation method is implemented smoothed particle hydrodynamics (SPH). This method runs in DualSPHysics code, which has great versatility and ability to simulate phenomena of any physical system where hydrodynamic aspects combine. In order to simulate a physical system DualSPHysics code, you need to preset the initial geometry of the system of interest, then this is included in the input file of the code. The simulation sets the initial geometry through regular geometric bodies positioned at different points in space. This was done through a programming language (Fortran, C + +, Java, etc..). This methodology will provide the basis to simulate more complex geometries future positions and form. (Author)

Assessment of the production of J/psi, related to minimum bias events, in In-In collisions at 158 GeV/c per nucleon detected with the vertex telescope at the N60 experiment

International Nuclear Information System (INIS)

Chapsal, L.

2009-01-01

Theoretical physics considers, at the first start of the world, that matter may have existed as a Quark and Gluon Plasma (QGP). The heavy ion collisions in ultra-relativist energies are used to recreate this deconfined state of matter. NA50 experiment at CERN put into evidence, between others, the existence of an abnormal J/ψ suppression in its dimuon channel for the most central lead-lead collisions. NA60 collaboration allowed, with an improved precision, to ameliorate and to supplement NA50 results. One of the most remarkable results of this experiment was to show that the dimuon excess, noticed in the intermediate masses, was induced by direct dimuons what could be the first evidence for thermal dimuons. The job of this work is related to NA60 experiment for In-In collisions at 158 GeV/c by nucleon and concerns the production of the resonance J/ψ according to centrality. After corrections of the effects of acceptance and efficiencies, the centrality is deduced from the trace multiplicity by using the code of simulation VENUS. Production of J/ψ is normalized to minimum bias events which are insensible to the production of QGP. Results point out that production of J/ψ in In-In collisions is compatible with nuclear absorption with a cross section σ = (4.18 ± 0.35) mb. There is no therefore abnormal suppression, whatever the centrality is. This study concerned only a fraction of In-In data, complete statistics would allow more accuracy in this result. (author)

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 11: standards and quality assurance

International Nuclear Information System (INIS)

1992-01-01

The document includes 8 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of standards and quality assurance. (Topic 11). From these, 2 papers were in INIS subject scope and a separate abstract was prepared for each of them

Excitation function of elastic scattering on 12C + 4He system, at low energies

International Nuclear Information System (INIS)

Perez-Torres, R.; Aguilera, E. F.; Martinez-Quiroz, E.; Murillo, G.; Belyaeva, T. L.; Maldonado-Velazquez, M.

2011-01-01

Interactions in the 12 C + 4 He system are of great interest in astrophysics and to help determine the relative abundances of elements in stars, at the end of helium burning [1, 2]. The Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico, have made measurements of elastic scattering for this system, using the inverse kinematics method with thick white gas [3, 4], for E CM (0.5 - 4 MeV) θ CM = 180 o . In this work we obtain excitation functions of elastic scattering of 12 C + 4 He system with angular and energy dependence; E CM = 0.5 - 4 MeV and θ CM 100 o -170 o .Using inverse kinematics method with thick white gas and energy loss tables. (Author)

Experiments with radioactive nuclear beams II; Experimentos con haces nucleares radiactivos II

Energy Technology Data Exchange (ETDEWEB)

Aguilera R, E.F.; Martinez Q, E.; Gomez C, A.; Lizcano C, D.; Garcia M, H.; Rosales M, P. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2001-12-15

The studies of nuclear reactions with heavy ions have been carried out for years for the group of heavy ions of the laboratory of the Accelerator of the ININ. Especially in the last years the group has intruded in the studies of nuclear reactions with radioactive beams, frontier theme at world level. Presently Technical Report is presented in detailed form the experimental methods and the analysis procedures of the research activities carried out by the group. The chpater II is dedicated to the procedures used in the analysis of the last two experiments with radioactive beams carried out by the group. In the chapter III is presented the procedure followed to carrying out an extended analysis with the CCDEF code, to consider the transfer channel of nucleons in the description of the fusion excitation functions of a good number of previously measured systems by the group. Finally, in the chapter IV the more important steps to continue in the study of the reaction {sup 12}C + {sup 12}C experiment drifted to be carried out using the available resources of the Tandem Accelerator Laboratory of the ININ are described. At the end of each chapter some of the more representative results obtained in the analysis are presented and emphasis on the scientific production generated by the group for each case is made. (Author)

Superficial characterization by XP S of silver nanoparticles and their hydrothermal deposit over zircaloy; Caracterizacion superficial por XPS de nanoparticulas de plata y su deposito hidrotermal sobre zircaloy

Energy Technology Data Exchange (ETDEWEB)

Contreras R, A.; Gutierrez W, C.; Martinez M, I.; Medina A, A. L., E-mail: aida.contreras@inin.gob.mx [ININ, Departamento de Tecnologia de Materiales, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2012-10-15

The analysis technique of X-ray photoelectron spectroscopy (XP S) is sensitive exclusively to the first layers of the solids surface, which allows obtaining information about the chemical, physical and electronic properties of them. The combustible elements of the boiling water nuclear reactors (BWR) are formed by zircaloy pipes that contain in their interior pellets or uranium dioxide. In this work is studied the zircaloy surface, oxidized zircaloy under similar conditions to those of a reactor BWR type and oxidized zircaloy with a hydrothermal deposit of silver nanoparticles and zinc. The silver deposit is a proposal of the Materials Technology Department of the Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico, which has the same objective that the noble metals deposit (Pt, Pd, and Rh) that is practiced in some of the reactors BWR, in order to mitigating the speed of crack growth for IGSCC in stainless steels 304 Ss. (Author)

Superficial characterization by XP S of silver nanoparticles and their hydrothermal deposit over zircaloy

International Nuclear Information System (INIS)

Contreras R, A.; Gutierrez W, C.; Martinez M, I.; Medina A, A. L.

2012-10-01

The analysis technique of X-ray photoelectron spectroscopy (XP S) is sensitive exclusively to the first layers of the solids surface, which allows obtaining information about the chemical, physical and electronic properties of them. The combustible elements of the boiling water nuclear reactors (BWR) are formed by zircaloy pipes that contain in their interior pellets or uranium dioxide. In this work is studied the zircaloy surface, oxidized zircaloy under similar conditions to those of a reactor BWR type and oxidized zircaloy with a hydrothermal deposit of silver nanoparticles and zinc. The silver deposit is a proposal of the Materials Technology Department of the Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico, which has the same objective that the noble metals deposit (Pt, Pd, and Rh) that is practiced in some of the reactors BWR, in order to mitigating the speed of crack growth for IGSCC in stainless steels 304 Ss. (Author)

6. Seminar of the IIE-ININ-IMP on technological specialties. Topic 10: industrial applications of radiation and control

International Nuclear Information System (INIS)

1992-01-01

The document includes 7 papers presented at the 6. Seminar of the IIE-ININ-IMP (Mexico) on technological specialties in the field of industrial applications of radiation and control. (Topic 10). A separate abstract was prepared for each paper

El concepto de ciencia como sistema, el positivismo, neopositivismo y las "investigaciones cuantitativas y cualitativas"

OpenAIRE

Díaz Narváez, Víctor Patricio

2014-01-01

El objeto de este trabajo es analizar las corrientes epistemológicas del positivismo, neopositivismo, las investigaciones cuantitativas y cualitativas asociadas al concepto de ciencia como sistema, y cómo estas corrientes confunden los métodos específicos de las ciencias particulares con las "investigaciones cuantitativas". Se analiza la falsa disyuntiva entre el tipo de investigaciones antes descritas. The purpose of this paper is to analyze the current epistemological positivism, logical...

3. Mexican school of nuclear physics; 3. Escuela Mexicana de Fisica Nuclear

Energy Technology Data Exchange (ETDEWEB)

Chavez L, E R [Instituto de Fisica, UNAM, 04510 Mexico D.F. (Mexico); Hess, P O [Instituto de Ciencias Nucleares, UNAM, 04510 Mexico D.F. (Mexico); Martinez Q, E [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

2002-07-01

The III Mexican School of Nuclear Physics which is directed to those post graduate in Sciences and those of last semesters students of the Physics career or some adjacent career was organized by the Nuclear Physics Division of the Mexican Physics Society, carrying out at November 18-29, 2002 in the installations of the Institute of Physics and the Institute of Nuclear Sciences both in the UNAM, and the National Institute of Nuclear Research (ININ). In this as well as the last version its were offered 17 courses, 9 of them including laboratory practices and the rest were of theoretical character only. This book treats about the following themes: Nuclear physics, Electrostatic accelerators, Cyclotrons, Thermonuclear reactions, Surface barrier detectors, Radiation detection, Neutron detection, Bonner sphere spectrometers, Radiation protection, Biological radiation effects, Particle kinematics, Nucleosynthesis, Plastics, Muons, Quadrupoles, Harmonic oscillators, Quantum mechanics among many other matters. (Author)

El aprendizaje significativo en las ciencias al participar en proyectos de investigacion cientifica

Science.gov (United States)

Mora Polanco, Miguelena

La ciencia es el eje fundamental a traves del cual se desarrollan las habilidades necesarias para el pensar cientifico que va a la busqueda del conocimiento cientifico. La intencion de este estudio fue indagar en el tema de investigacion cientifica desde el punto de vista de los participantes en los siguientes aspectos relacionados con la experiencia de investigacion cientifica: a) conceptos, b) proceso, c) destrezas y d) disposicion. Tambien se analizaron: a) las perspectivas del metodo cientifico, b) la estrategia de ensenanza, c) la cultura cientifica y d) la exposicion del proyecto investigativo en la Feria Cientifica; como parte del aprendizaje significativo de la ciencias de los participantes. Esta investigacion cualitativa propuso como diseno el estudio de caso. Los aspectos relacionados a la experiencia de participar en proyecto de investigacion cientifica son el fenomeno o caso bajo estudio. En el estudio participaron cinco (5) estudiantes egresados de escuela publica o privada que cursaban hasta el tercer ano de estudios universitarios, conducentes a un bachillerato en educacion secundaria en ciencias o en ciencias naturales. Las tecnicas utilizadas para recopilar los datos fueron: analisis de documentos del DEPR, revision de artefactos y entrevistas profundas. Para el analisis de los datos de las entrevistas se utilizo el modelo de Wolcott (1994). Del analisis de documentos del DEPR se identificaron areas a mejorar en las guias de las cartas circulares con relacion a la investigacion escolar y la feria cientifica. El analisis de los artefactos proveyo evidencia de como los internados, simposios e investigaciones fomentan el que los estudiantes se superen en el aspecto cognitivo, se conviertan en creadores del conocimiento, al hacer suyo los conceptos para poder explicarlos al publico. De las entrevistas los participantes manifestaron que la experiencia de investigacion fue una de aprendizaje significativo que los marco para toda la vida y les expandio su

Violencia en el trabajo: investigaciones realizadas en Colombia

Directory of Open Access Journals (Sweden)

José Gabriel Carvajal Orozco

2013-12-01

Full Text Available El propósito de esta ponencia es mostrar los resultados de una exploración bibliográfica concerniente a las investigaciones llevadas a cabo en los últimos diez años, sobre el tema de la violencia en el lugar de trabajo. Se consultaron 16 artículos –5 empíricos, 11 teóricos–, publicados en revistas científicas colombianas, en universidades públicas y privadas, en instituciones gubernamentales y en bases de datos académicas. La ponencia está estructurada en tres partes: la primera presenta los aspectos metodológicos; la segunda expone los resultados de la exploración, donde se muestran las problemáticas que se han abordado en las investigaciones sobre violencia en el trabajo, y la tercera y última parte contiene las conclusiones acerca de los resultados obtenidos.

Second Mexican School of Nuclear Physics: Notes; Segunda Escuela Mexicana de Fisica Nuclear: Notas

Energy Technology Data Exchange (ETDEWEB)

Aguilera, E F [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico); Chavez L, E R [Instituto de Fisica, UNAM, 04510 Mexico D.F. (Mexico); Hess, P O [Instituto de Ciencias Nucleares, UNAM, 04510 Mexico D.F. (Mexico)

2001-07-01

The II Mexican School of Nuclear Physics which is directed to those last semesters students of the Physics career or post-graduate was organized by the Nuclear Physics Division of the Mexican Physics Society, carrying out at April 16-27, 2001 in the installations of the Institute of Physics and the Institute of Nuclear Sciences, both in the UNAM, and the National Institute of Nuclear Research (ININ). A first school of a similar level in Nuclear Physics, was carried out in Mexico at 1977 as Latin american School of Physics. This book treats about the following themes: Interactions of radiation with matter, Evaluation of uncertainty in experimental data, Particle accelerators, Notions of radiological protection and dosimetry, Cosmic rays, Basis radiation (environmental), Measurement of excitation functions with thick targets and inverse kinematics, Gamma ray technique for to measure the nuclear fusion, Neutron detection with Bonner spectrometer, Energy losses of alpha particles in nickel. It was held the practice Radiation detectors. (Author)

Dose received by occupationally exposed workers at a nuclear medicine department

Science.gov (United States)

Ávila, O.; Sánchez-Uribe, N. A.; Rodríguez-Laguna, A.; Medina, L. A.; Estrada, E.; Buenfil, A. E.; Brandan, M. E.

2012-10-01

Personal Dose Equivalent (PDE) values were determined for occupational exposed workers (OEW) at the Nuclear Medicine Department (NMD) of "Instituto Nacional de Cancerología" (INCan), Mexico, using TLD-100 thermoluminescent dosemeters. OEW at NMD, INCan make use of radiopharmaceuticals for diagnosis and treatment of diseases. Radionuclides associated to a pharmaceutical compound used at this Department are 131I, 18F, 68Ga, 99mTc, 111In and 11C with main gamma emission energies between 140 and 511 keV. Dosemeter calibration was performed at the metrology department of "Instituto Nacional de Investigaciones Nucleares" (ININ), Mexico. Every occupational worker used dark containers with three dosimeters which were replaced monthly for a total of 5 periods. Additionally, control dosemeters were also placed at a site free of radioactive sources in order to determine the background radiation. Results were adjusted to find PDE/day and estimating annual PDE values in the range between 2 mSv (background) and 9 mSv. The mean annual value is 3.51 mSv and the standard deviation SD is 0.78 mSv. Four of the 16 OEW received annual doses higher than the average +1 SD (4.29 mSv). Results depend on OEW daily activities and were consistent for each OEW for the 5 studied periods as well as with PDE values reported by the firm that performs the monthly service. All obtained values are well within the established annual OEW dose limit stated in the "Reglamento General de Seguridad Radiológica", México (50 mSv), as well as within the lower limit recommended by the "International Commission on Radiation Protection" (ICRP), report no.60 (20 mSv). These results verify the adequate compliance of the NMD at INCan, Mexico with the norms given by the national regulatory commission.

Coordination of motor systems of the control bars of TRIGA Mark III reactor, through the use of a PLC; Coordinacion de los sistemas motrices de las barras de control del reactor Triga Mark III, mediante el uso de un PLC

Energy Technology Data Exchange (ETDEWEB)

Castro R, P. R.

2016-07-01

The use of programmable logic controllers (PLCs) has a wide field in the realization of automatic systems, since is sought that the form of control is easy for any user. In this work, the TRIGA Mark III reactor of Instituto Nacional de Investigaciones Nucleares (ININ) is intended to operate with a programming code in PLC for the automation of the control rods, having uniform wear according to the power required by the user. On the other hand, is proposed to develop an HMI graphical interface for communication via Ethernet, allowing supervision during the reactor operation process and greater protection of operators during reactor startup. The accuracy of the new actuators, as well as their durability, will allow a good performance of the reactor for many years to come. (Author)

Effect of thermal treatment on TL response of CaSO₄:Dy obtained using a new preparation method.

Science.gov (United States)

González, P R; Cruz-Zaragoza, E; Furetta, C; Azorín, J; Alcántara, B C

2013-05-01

We report the effect of thermal treatment on thermoluminescent (TL) sensitivity property of CaSO4:Dy obtained by a new preparation method at Instituto Nacional de Investigaciones Nucleares (ININ) of Mexico. Samples of phosphor powder were subjected to different thermal treatments respectively at 773, 873, 973 and 1,173K for 1h and then irradiated from 0.1 to 1,000 Gy gamma doses. Low energy dependence was analyzed too by irradiating with X-rays in the range of 16-145 keV. The results were normalized to the energy (1,252 keV) of (60)Co and they were compared with those obtained using the commercial dosimeters TLD-100. Also the kinetic parameters were determined by deconvolution of glow curve. Copyright © 2013 Elsevier Ltd. All rights reserved.

The technological safety in facilities that manage radioactive sources; La seguridad tecnologica en instalaciones que manejan fuentes radiactivas

Energy Technology Data Exchange (ETDEWEB)

Lizcano, D., E-mail: david.lizcano@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2014-10-15

The sealed radioactive sources are used inside a wide range of applications in the medicine, industry and investigation around the world. These sources can contain a great radionuclides variety, exhibiting a wide spectrum of activities and radiological half lives. This way, we can find pattern sources of radionuclides as Americium-241, Plutonium-238, Plutonium-239, Thorium-228 and Thorium-230, etc., with some activity of kBq in research laboratories, Iridium-192 and Cesium-137 sources used in brachytherapy with GBq activities, until sources with P Bq activities in industrial irradiators of Cobalt-60 and Cesium-137. This document approach the physical safety that entities like the IAEA recommends for the facilities that contain sealed sources, especially the measures that are taking in the Instituto Nacional de Investigaciones Nucleares (ININ) and others government facilities. (Author)

Coordination of motor systems of the control bars of TRIGA Mark III reactor, through the use of a PLC

International Nuclear Information System (INIS)

Castro R, P. R.

2016-01-01

The use of programmable logic controllers (PLCs) has a wide field in the realization of automatic systems, since is sought that the form of control is easy for any user. In this work, the TRIGA Mark III reactor of Instituto Nacional de Investigaciones Nucleares (ININ) is intended to operate with a programming code in PLC for the automation of the control rods, having uniform wear according to the power required by the user. On the other hand, is proposed to develop an HMI graphical interface for communication via Ethernet, allowing supervision during the reactor operation process and greater protection of operators during reactor startup. The accuracy of the new actuators, as well as their durability, will allow a good performance of the reactor for many years to come. (Author)

The technological safety in facilities that manage radioactive sources

International Nuclear Information System (INIS)

Lizcano, D.

2014-10-01

The sealed radioactive sources are used inside a wide range of applications in the medicine, industry and investigation around the world. These sources can contain a great radionuclides variety, exhibiting a wide spectrum of activities and radiological half lives. This way, we can find pattern sources of radionuclides as Americium-241, Plutonium-238, Plutonium-239, Thorium-228 and Thorium-230, etc., with some activity of kBq in research laboratories, Iridium-192 and Cesium-137 sources used in brachytherapy with GBq activities, until sources with P Bq activities in industrial irradiators of Cobalt-60 and Cesium-137. This document approach the physical safety that entities like the IAEA recommends for the facilities that contain sealed sources, especially the measures that are taking in the Instituto Nacional de Investigaciones Nucleares (ININ) and others government facilities. (Author)

Clinical application of amniotic membranes on a patient with epidermolysis bullosa.

Science.gov (United States)

Martínez Pardo, M E; Reyes Frías, M L; Ramos Durón, L E; Gutiérrez Salgado, E; Gómez, J C; Marín, M A; Luna Zaragoza, D

1999-01-01

The case of a patient with dystrophic epidermolysis bullosa treated with radiosterilised amniotic membranes is presented. The disorder is a congenital disease characterised by a poor desmosomal junction in the keratinocyte membrane. After proper donor screening, amnios were collected at Hospital Central Sur de Alta Especialidad (HCSAE), PEMEX and microbiological analysis was performed at Universidad Nacional Autónoma de México, FQUNAM, (Biology Dept. of the Chemistry Faculty, National Autonomous University of Mexico), before and after radiation sterilisation. Processing, packaging and sterilisation were performed at Instituto Nacional de Investigaciones Nucleares, ININ, (National Nuclear Research Institute). The patient, a ten-year-old boy with severe malnutrition, extensive loss of skin and pseudomonad infection in the whole body, was treated with gentle debridement in a Hubbard bath. Later amnion application was performed with sterilised amnios by using two different processes, in one of which the amnion was sterilised with paracetic acid, preserved in glycerol, kindly donated by the German Institute for Tissue and Cell Replacement and applied by Dr. Johannes C. Bruck, IAEA visiting expert, and the other amnion was processed at ININ: air dried and sterilised by gamma radiation at dose of 30 kGy. After spontaneous epithelisation was successfully promoted for seven days, the pain was alleviated and mobility was improved in a few hours and the patient's general condition was so improved that in a month he was discharged. Unfortunately, because this disease is revertive and has malignant degeneration, the prognosis is not good.

Spanish mining industry. Working mines. Research. Equipment. La mineria espanola. Explotaciones. Investigacion. Equipos

Energy Technology Data Exchange (ETDEWEB)

1982-01-01

The Spanish mining industry and the work of the organizations AITEMIN (Asociacion de Investigacion Tecnologica de Equipos Mineros), Laboratorio Oficial J.M. Madariaga, Instituto Geologico y Minero de Espana and Empresa Nacional Adaro de Investigaciones Mineras S.A. are described. A list of firms which are members of AITEMIN or SERCOBE (Asociacion Nacional de Fabricantes de Bienes de Equipo) is given. For each firm, the address and equipment manufactured is included.

Institucional: Instituto de Investigaciones Administrativas

OpenAIRE

Revista Institucional de la Facultad de Ciencias Económicas

2010-01-01

El Instituto de Investigaciones Administrativas se creó en el año 1958 bajo el auspicio de la Facultad de Ciencias Económicas de la Universidad Nacional de La Plata. Durante quince años estuvo bajo la dirección de quien promovió con mayor énfasis los estudios de administración en la Universidad Nacional de la Plata, el Profesor Pedro Delfino. Actualmente dirige el Instituto el Lic. Norberto Góngora con la Secretaría Técnica de la Lic. Gabriela Mollo y cuenta con 11 investigadores. El objetivo...

Strategy to study the probabilistic distribution of uranium resources in northeastern Mexico; Estrategia para estudiar la distribucion probabilistica de recursos uraniferos en el noreste de Mexico

Energy Technology Data Exchange (ETDEWEB)

Sanchez R, D.; Rodriguez S, J. de J.; Mendoza C, S. del P. [Servicio Geologico Mexicano, Blvd. Felipe Angeles Km 93.50-4, Col. Venta Prieta, 42083 Pachuca de Soto, Hidalgo (Mexico); Balcazar, M.; Pena G, P.; Zarazua, G.; Lopez M, A., E-mail: davidsanchez@sgm.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2017-09-15

The Instituto Nacional de Investigaciones Nucleares and Servicio Geologico Mexicano (ININ-SGM) agreement proposes the probabilistic determination of uranium deposits of the roll-fonts type, located in the Burgos Basin. Of the publications on the uranium deposits in this basin in the Texas State and the similarity of the stratigraphy with that corresponding to northeastern Mexico give solidity to the proposal. The proposal is to use a Geographical Information System as storage and processing platform for geological, geophysical, hydrological, geochemical and radiometric data. The collection of information from the SGM on radioactive minerals in Mexico and the modern isotope multi-analysis infrastructure of the ININ allow this study to be successfully addressed. The sensitivity of these equipment s is a few parts per trillion, for the isotopes of uranium, thorium and radio; portable field analysis equipment is available for radon isotope. An area has been identified within the Burgos Basin called La Coma, where the studies conducted allowed establishing a conceptual model of the hydro-geochemical environments that define oxidation, transition and reduction zones of the uranium ore, susceptible to being migrated by an underground flow, until precipitating it in sandstone receptors of the mineral. The first assessments of uranium and thorium in groundwater have been made using known standards. (Author)

Strategy to study the probabilistic distribution of uranium resources in northeastern Mexico

International Nuclear Information System (INIS)

Sanchez R, D.; Rodriguez S, J. de J.; Mendoza C, S. del P.; Balcazar, M.; Pena G, P.; Zarazua, G.; Lopez M, A.

2017-09-01

The Instituto Nacional de Investigaciones Nucleares and Servicio Geologico Mexicano (ININ-SGM) agreement proposes the probabilistic determination of uranium deposits of the roll-fonts type, located in the Burgos Basin. Of the publications on the uranium deposits in this basin in the Texas State and the similarity of the stratigraphy with that corresponding to northeastern Mexico give solidity to the proposal. The proposal is to use a Geographical Information System as storage and processing platform for geological, geophysical, hydrological, geochemical and radiometric data. The collection of information from the SGM on radioactive minerals in Mexico and the modern isotope multi-analysis infrastructure of the ININ allow this study to be successfully addressed. The sensitivity of these equipment s is a few parts per trillion, for the isotopes of uranium, thorium and radio; portable field analysis equipment is available for radon isotope. An area has been identified within the Burgos Basin called La Coma, where the studies conducted allowed establishing a conceptual model of the hydro-geochemical environments that define oxidation, transition and reduction zones of the uranium ore, susceptible to being migrated by an underground flow, until precipitating it in sandstone receptors of the mineral. The first assessments of uranium and thorium in groundwater have been made using known standards. (Author)

Transference patron for the calibration of activemeters for use in nuclear medicine; Patron de transferencia para la calibracion de activimetros de uso en medicina nuclear

Energy Technology Data Exchange (ETDEWEB)

Cortes P, A; Garcia D, O C; Ortiz P, I; Becerril V, A [Instituto nacional de Investigaciones Nucleares, Laboratorio de Patrones Radiactivos, Departamento de Metrologia, A.P. 18-1027. C.P. 11801 Mexico D.F. (Mexico)

2000-07-01

With the object to improve the calibration service of the activemetersof the users (nuclear medicine centres) so internal as external users at ININ and initiating the establishment of the traceability of the activity measures that carry out in the country, with respect to the National Patron of Nuclear Activity No. ININ-PNM-2, it is initiated the characterization and the performance control of the activemeter make Capintec, model CRC-7BT of the laboratory of Radioactive Patrons (LPR) of the Department of Metrology for to convert it in a transference patron. This characterization and control are based in the sustained review of the activemeter calibration for the I-131, Mo-99 and Sm-153 radioisotopes with activities from 100 mCi until some {mu} Ci and the Tc-99m, In-111, Tl-201, Ga-67, Cs-137, Co-60, and Ba-133 with activities of the range of some {mu} Ci. To verify the good performance of the instrument it was revised the linearity of its scale, the stability of readings, the variation of readings respect of the source position inside the activemeter well and it was determined the calibration factors for each one of the radiosotopes mentionated. The radioactive sources of mid-short life that are used which consist in radioactive solutions of 10 cm{sup 3} contained in polyethylene small bottles of 25 cm{sup 3} elaborated in the LPR and whose activity is measured with respect to the National Patron ININ-PNM-2. The sources of mid-large life are ampoules with 5 cm{sup 3} of radioactive solution, calibrated in activity by the primary laboratory, LNHB (formerly LMRI) of France. (Author)

Environmental monitoring radiological programs for the nuclear centre and the low level radioactive waste facility in Mexico

International Nuclear Information System (INIS)

Quintero, E.; Cervantes, L.; Rojas, V.

2006-01-01

The National Institute of Nuclear Research of Mexico (ININ) has its Laboratory of Environmental Radiological Monitoring, (LVRA), to assure the critical population and the environment they are not exposed to radiation doses greater than the limits established by the national and international legislation, this laboratory carries out environmental monitoring radiological programs the Nuclear Centre and its surroundings and the Low Level Radioactive Waste Facility (CADER) and its around. In order to carry out these programs the LVRA has rooms for evaporation, drying, grinding, ashing of environmental and food samples, and a laboratory for gamma ray spectrometry, liquid scintillation, alpha-beta gross counting and computer room. Since the year 2000 the (ININ) has tried to implant the quality system ISO 9001:2000 including a its (LVRA). This quality system includes: a Plan of Quality, Quality Manual, programs of technical and administrative document elaboration, technical and administrative procedures, technical and administrative qualification programmes for the laboratory staff, maintenance and calibration programs for measurement systems and finally participation in national and international exercises of intercomparison. The ININ counts with the management of quality assurance to verify these programs, in addition, our Nuclear Regulatory Commission (CNSNS) carries out periodic audits to authorize the of use and handling of radioactive and nuclear material licenses of these facilities. In this work we presented the advances and difficulties found in the implantation of the quality system, also we present the benefits obtained with uses of this system, the samples analyses results, and the calculation of the annual dose to the critical population for the last five years. In addition, we presented the calculation the radionuclides concentration tendencies in different sample types, according to our (CNSNS) requirements. In the same way the results of the calibrations

Experiments with radioactive nuclear beams II

International Nuclear Information System (INIS)

Aguilera R, E.F.; Martinez Q, E.; Gomez C, A.; Lizcano C, D.; Garcia M, H.; Rosales M, P.

2001-12-01

The studies of nuclear reactions with heavy ions have been carried out for years for the group of heavy ions of the laboratory of the Accelerator of the ININ. Especially in the last years the group has intruded in the studies of nuclear reactions with radioactive beams, frontier theme at world level. Presently Technical Report is presented in detailed form the experimental methods and the analysis procedures of the research activities carried out by the group. The chpater II is dedicated to the procedures used in the analysis of the last two experiments with radioactive beams carried out by the group. In the chapter III is presented the procedure followed to carrying out an extended analysis with the CCDEF code, to consider the transfer channel of nucleons in the description of the fusion excitation functions of a good number of previously measured systems by the group. Finally, in the chapter IV the more important steps to continue in the study of the reaction 12 C + 12 C experiment drifted to be carried out using the available resources of the Tandem Accelerator Laboratory of the ININ are described. At the end of each chapter some of the more representative results obtained in the analysis are presented and emphasis on the scientific production generated by the group for each case is made. (Author)

3. Mexican school of nuclear physics

International Nuclear Information System (INIS)

Chavez L, E.R.; Hess, P.O.; Martinez Q, E.

2002-01-01

The III Mexican School of Nuclear Physics which is directed to those post graduate in Sciences and those of last semesters students of the Physics career or some adjacent career was organized by the Nuclear Physics Division of the Mexican Physics Society, carrying out at November 18-29, 2002 in the installations of the Institute of Physics and the Institute of Nuclear Sciences both in the UNAM, and the National Institute of Nuclear Research (ININ). In this as well as the last version its were offered 17 courses, 9 of them including laboratory practices and the rest were of theoretical character only. This book treats about the following themes: Nuclear physics, Electrostatic accelerators, Cyclotrons, Thermonuclear reactions, Surface barrier detectors, Radiation detection, Neutron detection, Bonner sphere spectrometers, Radiation protection, Biological radiation effects, Particle kinematics, Nucleosynthesis, Plastics, Muons, Quadrupoles, Harmonic oscillators, Quantum mechanics among many other matters. (Author)

Internal dosimetry for occupationally exposed personnel in nuclear medicine

International Nuclear Information System (INIS)

Garcia, M.T.; Alfaro, L.M.M.; Angeles, C.A.

2013-01-01

Internal dosimetry plays an important role in nuclear medicine dosimetry control of personnel occupationally exposed, and that in recent years there has been a large increase in the use of radionuclides both in medical diagnosis as radiotherapy. But currently, in Mexico and in many parts of the world, this internal dosimetry control is not performed. The Instituto Nacional de lnvestigaciones Nucleares de Mexico (ININ) together with the Centro Oncologico de Toluca (ISEMMYM) have developed a simple and feasible methodology for monitoring of personnel working in these facilities. It was aimed to carry out the dosimetry of the personnel, due to the incorporation of I-131, using the spectrometric devices that the hospital has, a gamma camera. The first step in this methodology was to make a thyroid phantom to meet the specifications of the ninth ANSI. This phantom is compared under controlled conditions with RMC- II phantom used for system calibration of the ININ internal dosimetry (ACCUSCAN - Ll), and with another phantom developed in Brazil with ANSI specifications, in order to determine the variations in measurements due to the density of the material of each of the phantoms and adjust to the system ACCUSCAN, already certificate. Furthermore, necessary counts were performed with the gamma camera of the phantom developed at ININ, with a standard source of 133 Ba which simulates the energy of 131 I. With these data, were determined the counting efficiencies for a distance of 15 to 20 cm between the surface of the phantom and the the plate of the detectors. Another important aspect was to determine the lower limit of detection (LLD). In this paper we present the results obtained from the detectors calibration of the gamma camera of the hospital.

Public acceptance of nuclear energy

International Nuclear Information System (INIS)

Reis, J.S.B.

1984-01-01

Man, being unacquainted with the advantages of Nuclear Energy associates it with the manufacture of weaponry. However, the benefits of Nuclear Energy is received daily. In Brazil the public has not taken an anti-nuclear position; it is recognized that the Nuclear Plan exists exclusively for peaceful purposes and the authorities keep the community well informed. The Comision Nacional de Energia Nuclear along with the Instituto de Radioproteccion y Dosimetria, Instituto de Ingenieria Nuclear and the Instituto de Investigaciones Energeticas y Nucleares has developed in 27 years of existence, a gradual, accute and effective long term programme for the formation of potentially receptive opinion of Nuclear Energy. (Author)

Transference patron for the calibration of activemeters for use in nuclear medicine

International Nuclear Information System (INIS)

Cortes P, A.; Garcia D, O.C.; Ortiz P, I.; Becerril V, A.

2000-01-01

With the object to improve the calibration service of the activemetersof the users (nuclear medicine centres) so internal as external users at ININ and initiating the establishment of the traceability of the activity measures that carry out in the country, with respect to the National Patron of Nuclear Activity No. ININ-PNM-2, it is initiated the characterization and the performance control of the activemeter make Capintec, model CRC-7BT of the laboratory of Radioactive Patrons (LPR) of the Department of Metrology for to convert it in a transference patron. This characterization and control are based in the sustained review of the activemeter calibration for the I-131, Mo-99 and Sm-153 radioisotopes with activities from 100 mCi until some μ Ci and the Tc-99m, In-111, Tl-201, Ga-67, Cs-137, Co-60, and Ba-133 with activities of the range of some μ Ci. To verify the good performance of the instrument it was revised the linearity of its scale, the stability of readings, the variation of readings respect of the source position inside the activemeter well and it was determined the calibration factors for each one of the radiosotopes mentionated. The radioactive sources of mid-short life that are used which consist in radioactive solutions of 10 cm 3 contained in polyethylene small bottles of 25 cm 3 elaborated in the LPR and whose activity is measured with respect to the National Patron ININ-PNM-2. The sources of mid-large life are ampoules with 5 cm 3 of radioactive solution, calibrated in activity by the primary laboratory, LNHB (formerly LMRI) of France. (Author)

Synthesis and characterization of inorganic materials to be employees as adsorbents of toxic metals; Sintesis y caracterizacion de materiales inorganicos para ser empleados como adsorbentes de metales toxicos y de interes nuclear

Energy Technology Data Exchange (ETDEWEB)

Granados C, F.; Serrano G, J.; Bonifacio M, J., E-mail: francisco.granados@inin.gob.m [ININ, Departamento de Quimica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

In this chapter is described the development of the studies realized in the Instituto Nacional de Investigaciones Nucleares (ININ) by researchers of the Chemistry Department in the area of water decontamination. The study of the metals separation in aqueous solution through inorganic adsorbents, was initiated in the Chemistry Department, using zeolites for to adsorb metal cations like the cobalt and cadmium. In the year 1995, the separation studies of Co and Cd were realized using zeolite X. On the other hand, the adsorption capacity of the natural clinoptilolite to retain to the cobalt was also studied. With the natural evolution of these works, it began to study the effect of the organic compounds presence in the metals adsorption in zeolites. Apart from the Co and Cd the removal of Ni, Cd and Zn of the water has been investigated using clinoptilolite, heulandite and Hg, also using zeolites like adsorbent material. In the last years, they have been carried out studies on the separation of Cr in form of chromate (CrO{sub 4}{sup 2-}) as of dichromate ions (Cr{sub 2}O{sub 7}{sup 2-}), using pouzzolane modified with Fe and tricalcic phosphate. In these works were found that both materials are highly efficient to separate the chromium of aqueous solutions. (Author)

Program of internal training of the ININ personnel participating in the PERE of the CLV (1998). II. Development and final evaluation; Programa de capacitacion interna del personal del ININ participante en el PERE de la CLV (1998). II. Desarrollo y evaluacion final

Energy Technology Data Exchange (ETDEWEB)

Suarez, G. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

1999-04-15

According to the results of the initial evaluation, he/she was carried out the program of the personnel's of the participant ININ internal training in the PERE of the CLV (1998). The purpose of this report is to describe the development of the one it programs and the results of the final evaluation. (Author)

Second Mexican School of Nuclear Physics: Notes

International Nuclear Information System (INIS)

Aguilera, E.F.; Chavez L, E.R.; Hess, P.O.

2001-01-01

The II Mexican School of Nuclear Physics which is directed to those last semesters students of the Physics career or post-graduate was organized by the Nuclear Physics Division of the Mexican Physics Society, carrying out at April 16-27, 2001 in the installations of the Institute of Physics and the Institute of Nuclear Sciences, both in the UNAM, and the National Institute of Nuclear Research (ININ). A first school of a similar level in Nuclear Physics, was carried out in Mexico at 1977 as Latin american School of Physics. This book treats about the following themes: Interactions of radiation with matter, Evaluation of uncertainty in experimental data, Particle accelerators, Notions of radiological protection and dosimetry, Cosmic rays, Basis radiation (environmental), Measurement of excitation functions with thick targets and inverse kinematics, Gamma ray technique for to measure the nuclear fusion, Neutron detection with Bonner spectrometer, Energy losses of alpha particles in nickel. It was held the practice Radiation detectors. (Author)

Edirne ilindeki çevre kirliliğinin sosyo-ekonomik etkileri

OpenAIRE

Özçelikçi, Hamiyet

1995-01-01

Bu araştırma, Edime İli Merkez ve İlçelerinde yapılmıştır. İldeki çevre kirliliğinin sosyo-ekonomik etkileri, insan, tarım ve sanayinin çevre ile ilişkileri analiz edilerek çevreye olan duyarlılıkları gayeli örnekleme yöntemi ile test edilmiştir. Edirne 1990 nüfus sayımına göre toplam 404.559 nüfusu ile Trakya'nın İstanbul'dan sonra ikinci büyük kentidir. Nüfus hareketleri düzensiz bir seyir takip etmektedir. Nüfus artış hızı, Türkiye ortalamasının çok altında % 0,70 olan ilde nüfus yoğunluğu...

The founders of the ININ; Los fundadores del ININ

Energy Technology Data Exchange (ETDEWEB)

Bulbulian, S [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2006-07-01

The Mexican government sent the constituent law of the National Commission of Nuclear Energy (CNEN) at December 31, 1955. This classification enters in validity the January 1, 1956. However the Commission began to work in the last months 1956. This institution development two main activities: 1. A program of training on techniques with radioisotopes and nuclear instrumentation and 2. The creation of specialized programs and laboratories. Very important persons in the CNEN were the members of the Commission, the Dr. Manuel Sandoval Vallarta, the Dr. Nabor Carrillo Flores and the Atty. Jose Maria Ortiz Tirado, President of this institution. (Author)

Simulation of the TRIGA-ININ reactor using EXT-2, in R-{theta} R{theta} and temperature of 20 Centigrade; Simulacion del reactor TRIGA-ININ utilizando EXT-2, en geometria R-{theta} y una temperatura de 20 Centigrados

Energy Technology Data Exchange (ETDEWEB)

Aguilar H, F [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

1983-10-15

The simulation of the TRIGA-ININ reactor, it was beginning considering the more simple case (follower bars equal to fuel elements, cell bar transitory with vacuum, etc.), this it left tuning as the obtained results were observed and it was studied the literature with respect to this reactor, in the following step the followers are considered as standard elements but with 32 grams of U-235 and so forth until reaching to the configuration that is considered definitive. (Author)

Participation of the research institutes in the safety aspects of the Laguna Verde nuclear power plant

International Nuclear Information System (INIS)

Sanchez G, J.

1991-01-01

The main activities undertaken by two research institutes of Mexico, the Instituto de Investigaciones Electricas and the Instituto Nacional de Investigaciones Nucleares, related to the safety of the Laguna Verde Nuclear Power Plant, are described. Among these activities, the development of a system for data acquisition and analysis during pre-operational tests, the design and construction of a full-scope simulator, the in-core fuel management and the establishment of an equipment qualification laboratory, stand out. It is considered that there exists a large potential for further participation. (author)

Study of the production of di-muons in In-In collisions in the experiment NA60 of CERN-SPS; Etude de la production des dimuons dans les collisions In-In dans l'experience NA60 au CERN-SPS

Energy Technology Data Exchange (ETDEWEB)

Ducroux, L

2006-09-15

CERN's experiment NA60 investigates the production of pairs of muons in In-In collisions at an energy of 158 GeV/c/nucleon. The experimental setting includes a vertex telescope composed of a series of pixel detectors submitted to a magnetic field. This telescope is located in the target area of the muon spectrometer and has given accurate information on the kinematics of the di-muons produced in the collisions. The information collected by the vertex telescope allows the discrimination of prompt events from those coming from the decay of resonances. We have used a method for the reconstruction of the tracks based on the principal component analysis (PCA). We have shown that the excess of di-muons in the domain of low masses comes from a broadening of the {rho} meson in the dense and hot medium produced by the collision. In the domain of intermediate masses (between that of {phi} and that of J/{psi}) the excess has a prompt feature and as a consequence an increase of the charm rate is banned. We have also proved that the production of J/{psi} was abnormal in In-In system as it was in Pb-Pb collisions. (A.C.)

1993 Annual Report ININ

International Nuclear Information System (INIS)

Research and Development Division

1994-01-01

Six are the working areas included in this division; namely: Basic Research, Applied Research, Nuclear Fuel, Nuclear Systems; Control Projects Unit and Safeguards. Each working area has its own projects and departmental activities. Derived from this activities, arise thesis of the different academic degrees and in several subjects of physics, chemistry and nuclear sciences, as well as technological developments and achievements as the recent manufacture of nuclear fuel assemblies to be tested in Laguna Verde Nuclear Power Plant. For each project and departmental activity, aspects as objectives, advance percentage, personnel staff, activities, publications and presentation in congresses are detailed

Effect of the ionizing radiation in polymers; Efecto de la radiacion ionizante en polimeros

Energy Technology Data Exchange (ETDEWEB)

Martinez P, M. E.; Carrasco A, H. [ININ, Gerencia de Aplicaciones Nucleares en la Salud, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Benavides C, R., E-mail: esther.martinez@inin.gob.m [Centro de Investigacion en Quimica Aplicada, Blvd. Enrique Reyna Hermosillo No. 140, Col. Los Pinos, 25250 Saltillo, Coahuila (Mexico)

2010-07-01

Particularly, the polymers present three main effects when are exposed to radiation: inter crossing or reticulation, degradation or breaking and tolerance. Depending on the polymer structure, of the energy quantity absorbed by mass unit (dose), the concentration and the inter crossing agent dispersion and of the irradiation conditions; inert atmosphere or air and the temperature to which the irradiation is made, some of those effects is favored. The polymers that are used as isolations of cables and electric wires for specific applications require mechanical and electric properties superiors to those of the conventional materials. So, it is desirable that an insulating subjected to the high temperature produced by an electric discharge is not melted, what is associated to an inter crossed structure. Among the years 1983 and 1984, the IAEA advised to the Instituto Nacional de Investigaciones Nucleares (ININ) in diverse uses of the irradiation technology in the polymers area. Starting from then, it is began to research the effect of the gamma radiation in formulations based on polyethylene of low density/copolymer of ethylene vinyl acetate, using trimethylol-propane trimetacrilate like inter cross agent and with conventional preservatives, such as flame dilators, antioxidants, lubricants, etc., used in the cables industry and electric wires. In this chapter the result of the researches realized by the area of the ININ are given. (Author)

La violencia sexual asociada al conflicto y las implicaciones políticas de investigaciones recientes

Directory of Open Access Journals (Sweden)

Elisabeth Jean Wood

2016-07-01

Full Text Available La academia ha venido documentando un creciente número de modalidades de violencia sexual asociadas a los conflictos, sus causas y la gran variabilidad que existe en cuanto a su ejecución por parte de las organizaciones armadas. En este trabajo resumo los resultados de investigaciones recientes sobre dicha variabilidad, con énfasis en los hallazgos que contradicen o complican las creencias populares. Luego, presento varias interpretaciones sobre la afirmación de que esa violencia es parte de una continuidad entre tiempos de paz y de guerra. Después de analizar las investigaciones recientes sobre las dinámicas internas de las organizaciones armadas, sugiero que las violaciones sexuales a gran escala a menudo ocurren como una práctica, en vez de una estrategia. Por último, propongo algunos principios para guiar las políticas en vista de las investigaciones recientes

La net-ética desde la perspectiva de una secuencia de investigaciones sociales

OpenAIRE

CRUZ MESA, HERNANDO

2009-01-01

Este artículo presenta la perspectiva de una ética para la red o net-ética, que el autor ha identificado durante investigaciones realizadas en Colombia. En éstas se han realizado análisis relacionados con la educación, la administración, el diseño, la comunicación, el uso o la recuperación de información en internet, entre 1998 y 2007, particularmente la revisión teórica y el análisis crítico de un corpus de investigaciones. Dichos análisis han inducido nuevas preguntas y desafíos asociados a...

Program of internal training of the ININ personnel participating in the PERE of the CLV (1998). II. Development and final evaluation

International Nuclear Information System (INIS)

Suarez, G.

1999-04-01

According to the results of the initial evaluation, he/she was carried out the program of the personnel's of the participant ININ internal training in the PERE of the CLV (1998). The purpose of this report is to describe the development of the one it programs and the results of the final evaluation. (Author)

Simulation of the TRIGA-ININ reactor using EXT-2, in R-θ RΘ and temperature of 20 Centigrade

International Nuclear Information System (INIS)

Aguilar H, F.

1983-10-01

The simulation of the TRIGA-ININ reactor, it was beginning considering the more simple case (follower bars equal to fuel elements, cell bar transitory with vacuum, etc.), this it left tuning as the obtained results were observed and it was studied the literature with respect to this reactor, in the following step the followers are considered as standard elements but with 32 grams of U-235 and so forth until reaching to the configuration that is considered definitive. (Author)

Study of the production of di-muons in In-In collisions in the experiment NA60 of CERN-SPS

International Nuclear Information System (INIS)

Ducroux, L.

2006-09-01

CERN's experiment NA60 investigates the production of pairs of muons in In-In collisions at an energy of 158 GeV/c/nucleon. The experimental setting includes a vertex telescope composed of a series of pixel detectors submitted to a magnetic field. This telescope is located in the target area of the muon spectrometer and has given accurate information on the kinematics of the di-muons produced in the collisions. The information collected by the vertex telescope allows the discrimination of prompt events from those coming from the decay of resonances. We have used a method for the reconstruction of the tracks based on the principal component analysis (PCA). We have shown that the excess of di-muons in the domain of low masses comes from a broadening of the ρ meson in the dense and hot medium produced by the collision. In the domain of intermediate masses (between that of φ and that of J/ψ) the excess has a prompt feature and as a consequence an increase of the charm rate is banned. We have also proved that the production of J/ψ was abnormal in In-In system as it was in Pb-Pb collisions. (A.C.)

Investigaciones actuales del empleo de Allium sativum en medicina

Directory of Open Access Journals (Sweden)

Eslhey María Sánchez Dominguez

2016-02-01

Full Text Available Desde tiempos ancestrales el ajo Allium sativum ha sido utilizado por sus propiedades medicinales, ampliamente conocidas. Posee múltiples efectos beneficiosos; tales como: antimicrobiano, hipolipidémico, antitrombótico, actividad antitumoral, antihipertensivo, entre otras. Los compuestos sulfurados presentes en el mismo, principalmente alicina y ajoene, constituyen los principios activos responsables de las actividades biológicas referidas. Se realizó una revisión bibliográfica empleando los recursos disponibles en la red Infomed, específicamente Ebsco, PubMed, Hinari y SciELO, a través de los cuales se accedieron a las bases de datos: Medline, Academic Search Premier, Cochrane Database of Systematic Reviews y MedicLatina, para revisar el estado actual de las investigaciones del ajo en medicina. Existen evidencias científicas que avalan su uso, comprobando los efectos antes referidos. En los últimos años predominan artículos que se centran en el estudio de diferentes formulaciones del ajo: extracto añejo, extracto acuoso, aceite, ajo crudo. En algunas de las referencias consultadas se reconocen limitaciones metodológicas en estas investigaciones. Es consenso que las diferentes formulaciones elaboradas a partir el ajo deben utilizarse como tratamiento complementario.

Las investigaciones sobre la arquitectura religiosa en Colombia. El predominio católico, 1960-2008

Directory of Open Access Journals (Sweden)

Liliana Rueda Cáceres

2017-01-01

Full Text Available A través de un estado del arte sobre las investigaciones en torno a la arquitectura religiosa en Colombia se ratifica el predomino de lo católico y la condición pionera de estos estudios. Una indagación general permitió reconocer las diferentes tendencias, fortalezas, vacíos, la cronología y posibles vetas de trabajo de un campo de estudio que todavía requiere ser profundizado. Se indagaron, en las principales bibliotecas del país, las publicaciones resultado de investigaciones sobre la arquitectura religiosa desde comienzos del siglo xx hasta el año 2008. Se observó que el pico de producción se dio durante el periodo 1960-1990. Sin embargo, solo se encontró información de la arquitectura católica, lo que evidenció, además, que estas investigaciones son principalmente descriptivas y no poseen mayor análisis teórico sobre el hecho arquitectónico.

The SOS system like model to study the response to the ionizing radiation; El sistema SOS como modelo para estudiar la respuesta a la radiacion ionizante

Energy Technology Data Exchange (ETDEWEB)

Serment G, J.; Brena V, M., E-mail: jorge.serment@inin.gob.m [ININ, Departamento de Radiobiologia, Laboratorio de Genetica Microbiana, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

One of the important aspects in the radiobiology is the study of the strategies that the alive beings follow to counteract the genetic lesions generated by ionizing radiation. Among these is the SOS response of the bacteria, a group of 60 genes approximately that is activated when they happen lesions in the DNA and whose causes and structural diversity are multiple. So, an interest point in this response is to elucidate as all this lesions diversity activates this response in turn since, the protein that begins the process only recognizes simple ruptures of the double helix. For this is comes off that in the great majority of the cases is required of a previous prosecution of the damages so that the structure is generated that shoots this system. In this work a brief summary of the contributions in this field is made by part of the Microbiology Laboratory of the Instituto Nacional de Investigaciones Nucleares (ININ). (Author)

Report of the Advisory Committee on Health Research Informe del Comité Asesor de Investigaciones en Salud

Directory of Open Access Journals (Sweden)

1997-12-01

Full Text Available Este informe contiene un resumen de los temas presentados ante el Comité Asesor de Investigaciones en Salud (CAIS de la OPS/OMS en su 32.a reunión, celebrada en julio de 1997, así como de las discusiones sostenidas por el Comité y de sus recomendaciones en torno a cada punto. Los temas tratados abarcaron la cooperación técnica para el desarrollo de políticas en torno a las investigaciones sanitarias llevadas a cabo por organizaciones dedicadas a las ciencias y tecno logías de la salud; las tendencias y los desafíos propios de las investigaciones en salud en América Latina; el plan de investigaciones propuesto por el CAIS Global en apoyo a la implantación de las nuevas estrategias de salud para todos; las iniciativas para mejorar el uso de los Centros Colaboradores de la OPS/OMS; y el desarrollo de nuevas metodologías para el análisis de la situación de salud. El Comité también escuchó informes, ofreciendo a la vez sus comentarios, sobre la labor del Subcomité de Investigaciones en Sistemas y Servicios de Salud y del Subcomité de Biotecnología durante el último año; el progreso alcanzado en los estudios multicéntricos sobre la violencia y la salud del adulto mayor; y las actividades del Programa de Subvenciones para la Investigación de la OPS en 1996. Los miembros del Comité tuvieron la oportunidad de reunirse con funcionarios de la OPS para discutir el componente de investigación de los programas de cooperación técnica de la Organización.

Nuclear reactor control with fuzzy logic approaches - strengths, weakness, opportunities, and threats

International Nuclear Information System (INIS)

Ruan, Da

2004-01-01

As part of the special track on 'Lessons learned from computational intelligence in nuclear applications' at the forthcoming FLINS 2004 conference on Applied Computational Intelligence (Blankenberge, Belgium, September 1-3, 2004), research experiences on fuzzy logic techniques in applications of nuclear reactor control operation are critically reviewed in this presentation. Assessment of four real fuzzy control applications at the MIT research reactor in the US, the FUGEN heavy water reactor in Japan, the BR1 research reactor in Belgium, and a TRIGA Mark III reactor in Mexico will be examined thought a SWOT analysis (strengths, weakness, opportunities, and threats). Special attention will be paid to the current cooperation between the Belgian Nuclear Research Centre (SCK-CEN) and the Mexican Nuclear Centre (ININ) on the fuzzy logic control for nuclear reactor control project under the partial support of the National Council for Science and Technology of Mexico (CONACYT). (Author)

Refurbishing of a Freeze Drying Machine, used in Nuclear Medicine for Radiopharmaceuticals Production

International Nuclear Information System (INIS)

Gaytan-Gallardo, E.; Desales-Galeana, G.

2006-01-01

The refurbishing of a freeze drying machine used in the radiopharmaceuticals production, applied in nuclear medicine in the Radioactive Materials Department of the Nuclear Research National Institute in Mexico (ININ in Spanish), is presented. The freeze drying machine was acquired in the 80's decade and some components started having problems. Then it was necessary to refurbish this equipment by changing old cam-type temperature controllers and outdated recording devices, developing a sophisticated software system that substitutes those devices. The system is composed by a freeze drying machine by Hull, AC output modules for improved temperature control, a commercial data acquisition card, and the software system

Rules and Regulations on the 27th. Article for Nuclear Aspects

International Nuclear Information System (INIS)

1985-01-01

This law constitutes the Regulations of the Article 27 of the Constitution on nuclear matters, which in turn regulates the exploration, exploitation and benefits of radioactive minerals, as well as the use of nuclear fuels, the use of nuclear energy, research on nuclear techniques and sciences, nuclear industry and all matters related to it. All dispositions of this law are public and to be observed and complied with all throughout Mexico, and state that in this Country, the use of nuclear energy may only have pacific purposes. Likewise, it states all regulations for exploration, exploitation and benefits to be derived from radioactive materials, at the same time comprising the compliance with all facets of the cycle of fuel comprised from its refining to the manufacture or combustible elements. This law also comprises aspects of nuclear, radiologic and physic safety, as well as the safeguards appointed by the National Commission on Nuclear Safety and the compliance with this functions. The research aspect falls on the ININ. This law is constituted by 52 Articles and 6 Transitories

Inter y transdisciplinariedad en investigaciones ambientales. Una sinopsis

Directory of Open Access Journals (Sweden)

Alberto Ramírez-González

2016-07-01

Full Text Available El presente artículo de revisión tiene como pretensión realizar un acercamiento al estado actual de conocimiento en torno a la conformación de grupos de investigación y el análisis de la problemática ambiental, bajo enfoques inter y transdisciplinares. Constituye, esencialmente, una investigación teórica soportada en artículos científicos, libros y documentos publicados por entidades y organizaciones reconocidas nacional o internacionalmente. El documento incluye diversos puntos de vista en torno a los marcos conceptuales, teóricos y metodológicos, y expone algunas problemáticas ambientales y sociales que se presume deben ser abordadas desde tales enfoques. Adicionalmente, presenta algunos de los intersticios que ligan lo ambiental con algunas ciencias y disciplinas. La revisión hace acopio de los principales avances y los retos más recurrentes en torno a la formación de profesionales que cumplan con las competencias más pertinentes y adecuadas para la implementación inter y transdisciplinar. Adicionalmente, enuncia algunos de los factores asociados con el éxito y el fracaso de los investigadores, los grupos de investigación y las investigaciones, que han pretendido tales enfoques. Finalmente, expone algunas recomendaciones que podrían potenciar el desempeño de los grupos que realizan investigaciones inter y transdisciplinares, las cuales han emergido, precisamente, del seguimiento a proyectos de esta naturaleza. CC BY-NC-SA Gestión y Ambiente (2016.

Chaos and fractals. Applications to nuclear engineering; Caos y fractales. Aplicaciones en ingenieria nuclear

Energy Technology Data Exchange (ETDEWEB)

Clausse, A; Delmastro, D F

1991-12-31

This work presents a description of the research lines carried out by the authors on chaos and fractal theories, oriented to the nuclear field. The possibilities that appear in the nuclear security branch where the information deriving from chaos and fractal techniques may help to the development of better criteria and more reliable designs, are of special importance. (Author). [Espanol] En este trabajo se presenta una descripcion de las lineas de investigacion que los autores estan llevando a cabo en teoria de caos y fractales orientadas al campo nuclear. Es de especial importancia las posibilidades que se abren en el area de la seguridad nuclear, en donde la informacion proveniente de las tecnicas de caos y fractales pueden ayudar al desarrollo de mejores criterios y disenos mas confiables. (Autor).

Activation calculation of steel of the control rods of TRIGA Mark III reactor; Calculo de activacion del acero de las barras de control del reactor TRIGA Mark III

Energy Technology Data Exchange (ETDEWEB)

Garcia M, T.; Cruz G, H. S.; Ruiz C, M. A.; Angeles C, A., E-mail: teodoro.garcia@inin.gob.mx [ININ, Carretera Mexico-Toluca sn, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2014-10-15

In the pool of TRIGA Mark III reactor of the Instituto Nacional de Investigaciones Nucleares (ININ), there are control rods that were removed from the core, and which are currently on shelves of decay. These rods were part of the reactor core when only had fuel standard (from 1968-1989). To conduct a proper activation analysis of the rods, is very important to have well-characterized the materials which are built, elemental composition of the same ones, the atomic densities and weight fractions of the elements that constitute them. To determine the neutron activation of the control rods MCNP5 code was used, this code allows us to have well characterized the radionuclides inventory that were formed during irradiation of the control rods. This work is limited to determining the activation of the steel that is part of the shielding of the control rods, the nuclear fuel that is in the fuel follower does not include. The calculation model of the code will be validated with experimental measurements and calculating the activity of fission products of the fuel follower which will take place at the end of 2014. (Author)

Activation calculation of steel of the control rods of TRIGA Mark III reactor

International Nuclear Information System (INIS)

Garcia M, T.; Cruz G, H. S.; Ruiz C, M. A.; Angeles C, A.

2014-10-01

In the pool of TRIGA Mark III reactor of the Instituto Nacional de Investigaciones Nucleares (ININ), there are control rods that were removed from the core, and which are currently on shelves of decay. These rods were part of the reactor core when only had fuel standard (from 1968-1989). To conduct a proper activation analysis of the rods, is very important to have well-characterized the materials which are built, elemental composition of the same ones, the atomic densities and weight fractions of the elements that constitute them. To determine the neutron activation of the control rods MCNP5 code was used, this code allows us to have well characterized the radionuclides inventory that were formed during irradiation of the control rods. This work is limited to determining the activation of the steel that is part of the shielding of the control rods, the nuclear fuel that is in the fuel follower does not include. The calculation model of the code will be validated with experimental measurements and calculating the activity of fission products of the fuel follower which will take place at the end of 2014. (Author)

Modos de produccion cientifica: Culturas y metodologias de investigacion en la Universidad de Cadiz

Science.gov (United States)

Gonzalez Ramos, Ana M.

2004-12-01

Este trabajo de investigacion supone un modelo teorico de caracter aplicado, que proporciona la oportunidad de evaluar la produccion cientifica de los investigadores. Se encuadra dentro de la tradiccion de la estadistica aplicada y la sociologia del conocimiento. Atiende especialmente a dos conjuntos de temas de interes, por una parte, las caracteristicas principales que determinan el nivel y tipo de produccion academica producida por las unidades de investigacion y por los propios investigadores; por otra, la utilizacion que se hace de los metodos y tecnicas de investigacion puesto que de ello tambien depende el modo de produccion cientifica. Los puntos novedosos de esta tesis son: la medicion cuantitativa del objeto de estudio, la suma de los productos y las condiciones externas a la produccion del conocimiento mas otros elementos internos como las caracteristicas de los investigadores y la metodologia utilizada para desarrollar sus trabajos; y, finalmente, el uso de las nuevas tecnologias. El aprovechamiento de los recursos estadisticos y las fuentes de informacion secundarias se complementan con el diseno propio de una encuesta donde se implementa las caracteristicas descritas en un capitulo anterior sobre los metodos cientificos mas idoneos descritos en los principales manuales y articulos cientificos desde distintas disciplinas de conocimiento. Dicha encuesta ha sido desarrollada como un programa propio y en base a los mas innovadores usos de la tecnologia en la metodologia de encuestas.

Nuclear research center transformation experience

International Nuclear Information System (INIS)

Diaz, J. L.; Jimenez, J. M.

2001-01-01

As consequence of the changes in the energy polities of each countries in the 80th. many of the Nuclear Research Centres suffered a transformation (more of less deep) in other Research and Development Centres with a wider spectrum that the exclusively nuclear one. This year is the 50 anniversary of the Spanish Centre of Nuclear Research-Junta de Energia Nuclear.The JEN the same as other suffered a deep renovation to become the CIEMAT Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (Research Centre for Energy, Environment and Technology). This paper is focussed on the evolution of JEN to CIEMAT besides analysing the reach of this re-foundation considering the political reasons and technical aspect that justified it and the laws in those it is based on. (Author)

El discurso cienti??fico en la investigacio??n educativa en Latinoame??rica: el caso de Me??xico

OpenAIRE

Castellanos Quintero, Sara Julia

2011-01-01

En este arti??culo se presenta el estado del arte del ana??lisis del discurso cienti??fico en la investigacio??n educativa en Me??xico, particularmente en el disen??o y desarrollo del curri??culo. La investigacio??n en el a??rea del curri??culo universitario comenzo?? en Me??xico en los an??os 80. El discurso estaba orientado hacia la bu??squeda de modelos y me??todos de ensen??anza y evaluacio??n, la implementacio??n del practicum y la correspondencia entre la formacio??n profesional y el em...

Natural Mexican zeolite, potential material for hydrogen storage; Zeolita natural mexicana, material para su posible uso en el almacenamiento de hidrogeno

Energy Technology Data Exchange (ETDEWEB)

Iturbe-Garcia, J. L.; Lopez Munoz, B. E. [Instituto Nacional de Investigaciones Nucleares (Mexico)]. E-mail: joseluis.iturbe@inin.gob.mx

2009-09-15

This work presents a study of the use of natural Mexican zeolite as a possible alternative for hydrogen storage. This zeolite material is from the state of Sonora. Its particle size was decreased using a grinding treatment with a mechanical alloying system for 5 hours. The mechanical alloying equipment was built in our Institute (Instituto Nacional de Investigaciones Nucleares, ININ). Later, zeolite in powder form was characterized with x-ray diffraction and sweep electron microscopy. It was heated in a micro-reactor at 350 degrees Celsius, which was simultaneously emptied over 2 hours to eliminate humidity and possible gases trapped in its structure. Next, the temperature was reduce to 10 degrees Celsius and it was placed in contact with ultra-high pure hydrogen at a pressure of 10 bars for 10 minutes. The analysis of hydrogen trapped in the zeolite was conducted with gas chromatography. The results of the chromatograms indicate that the zeolite absorbed and liberated the hydrogen in completely different conditions than those reported in the literature. That is, with our experimental conditions at low pressure and temperature, the hydrogen was absorbed in this type of material. [Spanish] En este trabajo se presenta un estudio sobre el uso de una zeolita natural de origen mexicano como posible alternativa para almacenar hidrogeno. Este material zeolitico procede del Estado de Sonora, al cual se le disminuyo el tamano de particula mediante un tratamiento de molienda con un sistema de aleado mecanico durante 5 horas. El equipo de aleado mecanico se construyo en nuestro Instituto (Instituto Nacional de Investigaciones Nucleares, ININ). Posteriormente, la zeolita en forma de polvo se caracterizo por medio de difraccion de rayos X y microscopia electronica de barrido. Se sometio a calentamiento en un micro-reactor a 350 grados Celsios y al mismo tiempo haciendo vacio durante 2 horas, para eliminar humedad y posibles gases que estuvieran atrapados en su estructura. En

Experimental measurement of the refrigerant temperature of the TRIGA Mark III reactor of the ININ

International Nuclear Information System (INIS)

Gallardo S, L.F.; Alonso V, G.

1991-08-01

With the object of knowing the axial temperature profile of the refrigerant in the core of the TRIGA Mark III reactor of the ININ, the temperatures of this, at the enter, in the center and the exit of the core were measured, in the positions: west 2, north 2 and south 1. This was made by means of the thermo pars introduction mounted in aluminum guides, connected to a measurer of digital temperature, whose resolution is of ± 0.1 C. The measurements showed a bigger heating of the refrigerant in the superior half of the core, that which suggests that the axial profile of temperature of the reactor is not symmetrical with respect to the center or that those temperature measurements in the center are not correct. (Author)

Program of internal training of the ININ personnel participating in the PERE of the CLV (1998). I. Initial evaluation; Programa de capacitacion interna del personal del ININ participante en el PERE de la CLV (1998). I. Evaluacion inicial

Energy Technology Data Exchange (ETDEWEB)

Suarez, G. [ININ, 52045 Ocoyoacac, EStado de Mexico (Mexico)

1999-01-15

According to the document 'Program of Internal Training of the Personnel of the ININ participant in the PERE of the CLV (1998)' presented to the National Center of Disasters Prevention, it was included an action of previous evaluation to courses and practices with the purpose of knowing the state of knowledge regarding those activities that have to carry out. In this report the results of the evaluation are presented. Six questionnaires were elaborated: 1. The PERE and its procedures. 2. Control of the radiological exposure of the response personnel. 3. Control of water and foods. 4. Communications system of the PERE. 5. Monitoring, classification and decontamination of having evacuated. 6. Specialized medical attention. (Author)

Sentido y alcance de las investigaciones internas en la empresa

OpenAIRE

Montiel, Juan Pablo

2013-01-01

En un contexto de notable expansión del fenómeno del "criminal compliance" en el plano práctico y científico, las investigaciones internas aparecen llamativamente como uno de los temas menos trabajados. Sin embargo, el interés de la doctrina ha crecido notablemente en los últimos años como consecuencia de su potencial relevancia en la atenuación y exclusión de la responsabilidad penal. La presente contribución acerca una introducción general en la que se delimitan conceptualmente las investig...

Development and validation of a model TRIGA Mark III reactor with code MCNP5

International Nuclear Information System (INIS)

Galicia A, J.; Francois L, J. L.; Aguilar H, F.

2015-09-01

The main purpose of this paper is to obtain a model of the reactor core TRIGA Mark III that accurately represents the real operating conditions to 1 M Wth, using the Monte Carlo code MCNP5. To provide a more detailed analysis, different models of the reactor core were realized by simulating the control rods extracted and inserted in conditions in cold (293 K) also including an analysis for shutdown margin, so that satisfied the Operation Technical Specifications. The position they must have the control rods to reach a power equal to 1 M Wth, were obtained from practice entitled Operation in Manual Mode performed at Instituto Nacional de Investigaciones Nucleares (ININ). Later, the behavior of the K eff was analyzed considering different temperatures in the fuel elements, achieving calculate subsequently the values that best represent the actual reactor operation. Finally, the calculations in the developed model for to obtain the distribution of average flow of thermal, epithermal and fast neutrons in the six new experimental facilities are presented. (Author)

Cytogenetic diagnostic of 3 populations of occupationally exposed personnel; Diagnostico citogenetico de 3 poblaciones de personal ocupacionalmente expuesto

Energy Technology Data Exchange (ETDEWEB)

Guerrero C, C.; Arceo M, C., E-mail: citlali.guerrero@inin.gob.mx [ININ, Departamento de Biologia, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2013-10-15

In the year 2000 the first service of biological dosimetry was requested to the Instituto Nacional de Investigaciones Nucleares (ININ), and until the year 2012 have been assisted 52 cases approximately. Most of the cases correspond to workers dedicated to the industrial radiography, followed by the occupationally exposed personnel either in the hospital area or health services and the minority corresponds to individuals linked to research institutions. The incident with more serious consequences to the individual happened to workers that ingested I-131 in the year 2003. Using the biological dosimetry to estimate exposure dose by damage in the lymphocyte chromosomes of each worker has been possible to establish the exposure dose in each one of them, or also to discard the supposed exposure. The dosimetry demonstrates to be an useful tool for situations with exposure suspicion, for example when the reading of thermoluminescent dosimeter of a occupationally exposed personnel does not correspond to the event, or when the personnel forgets to carry his dosimeter, the exposure dose can be determined. (Author)

Development and validation of a model TRIGA Mark III reactor with code MCNP5; Desarrollo y validacion de un modelo del reactor Triga Mark III con el codigo MCNP5

Energy Technology Data Exchange (ETDEWEB)

Galicia A, J.; Francois L, J. L. [UNAM, Facultad de Ingenieria, Departamento de Sistemas Energeticos, Ciudad Universitaria, 04510 Ciudad de Mexico (Mexico); Aguilar H, F., E-mail: blink19871@hotmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2015-09-15

The main purpose of this paper is to obtain a model of the reactor core TRIGA Mark III that accurately represents the real operating conditions to 1 M Wth, using the Monte Carlo code MCNP5. To provide a more detailed analysis, different models of the reactor core were realized by simulating the control rods extracted and inserted in conditions in cold (293 K) also including an analysis for shutdown margin, so that satisfied the Operation Technical Specifications. The position they must have the control rods to reach a power equal to 1 M Wth, were obtained from practice entitled Operation in Manual Mode performed at Instituto Nacional de Investigaciones Nucleares (ININ). Later, the behavior of the K{sub eff} was analyzed considering different temperatures in the fuel elements, achieving calculate subsequently the values that best represent the actual reactor operation. Finally, the calculations in the developed model for to obtain the distribution of average flow of thermal, epithermal and fast neutrons in the six new experimental facilities are presented. (Author)

Cytogenetic diagnostic of 3 populations of occupationally exposed personnel

International Nuclear Information System (INIS)

Guerrero C, C.; Arceo M, C.

2013-10-01

In the year 2000 the first service of biological dosimetry was requested to the Instituto Nacional de Investigaciones Nucleares (ININ), and until the year 2012 have been assisted 52 cases approximately. Most of the cases correspond to workers dedicated to the industrial radiography, followed by the occupationally exposed personnel either in the hospital area or health services and the minority corresponds to individuals linked to research institutions. The incident with more serious consequences to the individual happened to workers that ingested I-131 in the year 2003. Using the biological dosimetry to estimate exposure dose by damage in the lymphocyte chromosomes of each worker has been possible to establish the exposure dose in each one of them, or also to discard the supposed exposure. The dosimetry demonstrates to be an useful tool for situations with exposure suspicion, for example when the reading of thermoluminescent dosimeter of a occupationally exposed personnel does not correspond to the event, or when the personnel forgets to carry his dosimeter, the exposure dose can be determined. (Author)

PREFACE: XXXVI Symposium on Nuclear Physics (Cocoyoc 2013)

Science.gov (United States)

Barrón-Palos, Libertad; Morales-Agiss, Irving; Martínez-Quiroz, Enrique

2014-03-01

logo The XXXVI Symposium on Nuclear Physics, organized by the Division of Nuclear Physics of the Mexican Physical Society, took place from 7-10 January, 2013. As it is customary, the Symposium was held at the Hotel Hacienda Cocoyoc, in the state of Morelos, Mexico. Conference photograph This international venue with many years of tradition was attended by outstanding physicists, some of them already regulars to this meeting and others who joined us for the first time; a total of 45 attendees from different countries (Argentina, Brazil, Canada, China, Germany, Italy, Japan, Mexico and the United States). A variety of topics related to nuclear physics (nuclear reactions, radioactive beams, nuclear structure, fundamental neutron physics, sub-nuclear physics and nuclear astrophysics, among others) were presented in 26 invited talks and 10 contributed posters. Local Organizing Committee Libertad Barrón-Palos (IF-UNAM)) Enrique Martínez-Quíroz (ININ)) Irving Morales-Agiss (ICN-UNAM)) International Advisory Committee Osvaldo Civitarese (UNLP, Argentina) Jerry P Draayer (LSU, USA)) Alfredo Galindo-Uribarri (ORNL, USA)) Paulo Gomes (UFF, Brazil)) Piet Van Isacker (GANIL, France)) James J Kolata (UND, USA)) Reiner Krücken (TRIUMF, Canada)) Jorge López (UTEP, USA)) Stuart Pittel (UD, USA)) W Michael Snow (IU, USA)) Adam Szczepaniak (IU, USA)) Michael Wiescher (UND, USA)) A list of participants is available in the PDF

Phosphated in aluminium 6061-T651 used in the pool of the TRIGA Mark III nuclear reactor; Fosfatado en aluminio 6061-T651 utilizado en la tina del reactor nuclear TRIGA Mark III

Energy Technology Data Exchange (ETDEWEB)

Aguilar H, F.; Espinosa L, J.; Pena B, A.; Perez F, C.; Sanchez C, M.; Vite T, M.; Vite T, J. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

2001-07-01

We characterized a phosphated coating used a substrate in aluminium 6061-T651, which is used in the container of the TRIGA Mark III nuclear reactor. Characterization was made using MEB and X-ray diffraction techniques. Coating application has the function to prevent the corrosion. Coating was probed to test adhesion in accordance with the Standard ASTM D-4541, and the corrosion process using a salt spray (fog) camera, in accordance with the Standard ASTM B-117, so as we could phosphate the welding cord. These experiences were obtained using a Deep cell. Results obtained are going to phosphate 'in situ' using a mobile device which was patented for the National Institute of Nuclear Research (ININ) in the Mexican Institute of Intellectual Property (INPI). (Author)

Comparison and validation of the results of the AZNHEX v.1.0 code with the MCNP code simulating the core of a fast reactor cooled with sodium; Comparacion y validacion de los resultados del codigo AZNHEX v.1.0 con el codigo MCNP simulando el nucleo de un reactor rapido refrigerado con sodio

Energy Technology Data Exchange (ETDEWEB)

Galicia A, J.; Francois L, J. L.; Bastida O, G. E. [UNAM, Facultad de Ingenieria, Departamento de Sistemas Energeticos, Ciudad Universitaria, 04510 Ciudad de Mexico (Mexico); Esquivel E, J., E-mail: blink19871@hotmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2016-09-15

The development of the AZTLAN platform for the analysis and design of nuclear reactors is led by Instituto Nacional de Investigaciones Nucleares (ININ) and divided into four working groups, which have well-defined activities to achieve significant progress in this project individually and jointly. Within these working groups is the users group, whose main task is to use the codes that make up the AZTLAN platform to provide feedback to the developers, and in this way to make the final versions of the codes are efficient and at the same time reliable and easy to understand. In this paper we present the results provided by the AZNHEX v.1.0 code when simulating the core of a fast reactor cooled with sodium at steady state. The validation of these results is a fundamental part of the platform development and responsibility of the users group, so in this research the results obtained with AZNHEX are compared and analyzed with those provided by the Monte Carlo code MCNP-5, software worldwide used and recognized. A description of the methodology used with MCNP-5 is also presented for the calculation of the interest variables and the difference that is obtained with respect to the calculated with AZNHEX. (Author)

Comparison and validation of the results of the AZNHEX v.1.0 code with the MCNP code simulating the core of a fast reactor cooled with sodium

International Nuclear Information System (INIS)

Galicia A, J.; Francois L, J. L.; Bastida O, G. E.; Esquivel E, J.

2016-09-01

The development of the AZTLAN platform for the analysis and design of nuclear reactors is led by Instituto Nacional de Investigaciones Nucleares (ININ) and divided into four working groups, which have well-defined activities to achieve significant progress in this project individually and jointly. Within these working groups is the users group, whose main task is to use the codes that make up the AZTLAN platform to provide feedback to the developers, and in this way to make the final versions of the codes are efficient and at the same time reliable and easy to understand. In this paper we present the results provided by the AZNHEX v.1.0 code when simulating the core of a fast reactor cooled with sodium at steady state. The validation of these results is a fundamental part of the platform development and responsibility of the users group, so in this research the results obtained with AZNHEX are compared and analyzed with those provided by the Monte Carlo code MCNP-5, software worldwide used and recognized. A description of the methodology used with MCNP-5 is also presented for the calculation of the interest variables and the difference that is obtained with respect to the calculated with AZNHEX. (Author)

TRANSFORMACIONES EN LAS INVESTIGACIONES ANTROPOLÓGICAS sobre naturaleza, ecología y medio ambiente

Directory of Open Access Journals (Sweden)

ASTRID ULLOA

2001-01-01

Full Text Available EN LAS INVESTIGACIONES ANTROPOLÓGICAS HA HABIDO UN LARGO PROCESO DE TRANSformación e interacción de la noción moderna de la naturaleza con nociones híbridas de cuasi-objetos y cuasi-humanos, así como la transformación de las concepciones de la naturaleza de una entidad apolítica a construcciones sociales con implicaciones políticas. Para analizar estos procesos, este texto presenta una revisión teórica de los cambios que se han dado en las categorías e investigaciones antropológicas sobre naturaleza, ecología y medio ambiente. Se destacan dos tendencias: la primera, ligada al replanteamiento de la dicotomía naturaleza/cultura a la luz de los conocimientos locales. La segunda, relacionada con los aportes de la ecología política, enfatizando el papel de los diferentes actores dentro de los discursos ambientales. Finalmente, se contextualizan las perspectivas de investigación sobre naturaleza, ecología y medio ambiente en América latina y en Colombia.

Qualitative aspects in the projects that are developed in the Instituto de Investigaciones Electricas; Aspectos cualitativos en los proyectos que se desarrollan en el Instituto de Investigaciones Electricas

Energy Technology Data Exchange (ETDEWEB)

Ruiz Neblina, Joaquin [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

1999-07-01

The globalization of markets has generated more options of purchase of all type of goods and services, these options have generated opportunities and threats for all the companies and have looked for the satisfaction of the client as a strategy to remain or incursion into the global market. The Instituto de Investigaciones Electricas (IIE) is not the exception and therefore it looks for the identification of the qualitative aspects and to systematize its application in the projects that executes by means of the implantation of a system of quality assurance based on the series of ISO 9000 Standards. Some examples are described to identify the qualitative aspects of the projects that are developed in the Institute. [Spanish] La globalizacion de los mercados ha generado mas opciones de compra de todo tipo de bienes y servicios, dichas opciones han generado oportunidades y amenazas para todas las empresas y se ha buscado satisfacer al cliente como estrategia para permanecer o incursionar en el mercado global. El Instituto de Investigaciones Electricas (IIE) no es la excepcion y por lo tanto busca identificar los aspectos cualitativos y sistematizar su aplicacion en los proyectos que realiza mediante la implantacion de un sistema de aseguramiento de la calidad basado en la serie de normas ISO 9000. Se describen algunos ejemplos para identificar los aspectos cualitativos de los proyectos que se desarrollan en el instituto.

de investigaciones científicas

Directory of Open Access Journals (Sweden)

Stephany Laguna Sanjuanelo

2007-01-01

Full Text Available En este trabajo se explican de manera amplia las violaciones éticas que se cometen con mayor frecuencia al momento de publicar artículos científicos ya sea porque no se tiene el conocimiento necesario o porque se “cree” necesario realizarlas. Se hace referencia al proceso editorial y la parte ética que éste conlleva, el concepto de autoría y los criterios existentes para denominar a una persona “autora” de un artículo, además de explicar el proceso de revisión por pares por el cual pasan todas las investigaciones para su validación antes de ser publicadas. También se analizan las violaciones éticas más comunes y fáciles de cometer si no se tiene el conocimiento, como son el plagio y la publicación duplicada, y se adjuntan guías prácticas para evitar cometerlas. Por último hablamos de consideraciones finales que se deben tener en cuenta antes de publicar artículos, tales como los conflictos de interés y el consentimiento informado, los cuales son muy importantes al momento de validar la información que se presente en el artículo en cuestión.

Applications of noise analysis to nuclear safety

International Nuclear Information System (INIS)

Aguilar Martinez, Omar

2000-01-01

Noise Analysis techniques (analysis of the fluctuation of physical parameters) have been successfully applied to the operational vigilance of the technical equipment that plays a decisive role in the production cycle of a very complex industry. Although fluctuation measurements in nuclear installations started almost at the start of the nuclear era (see works by Feynman and Rossi on the development of neutron methodology), only recently have neutron noise diagnostic applications begun to be a part of the standard procedures for the performance of some modern nuclear installations. Following the relevant technical advances made in information sciences and analogical electronics, measuring the fluctuation of physical parameters has become a very effective tool for detecting, guarding and following up possible defects in a nuclear system. As the processing techniques for the fluctuation of a nuclear reactor's physical-neutron parameters have evolved (temporal and frequency analysis, multi-parameter self -regression analysis, etc.), the applications of the theory of non-lineal dynamics and chaos theory have progressed by focusing on the problem from another perspective. This work reports on those nuclear applications of noise analysis that increase nuclear safety in all types of nuclear facilities and that have been carried out by the author over the last decade, such as: -Void Force Critical Set Applications (Zero Power Reactor Applications, Central Institute of Physical Research, Budapest, Hungary); -Research Reactor Applications (Triga Mark III Reactor, National Institute of Nuclear Research, ININ, Mexico); -Power Reactor Applications in a Nuclear Power Plant (First Circuit of Block II, Paks Nuclear Center, Hungary); -Second Loop applications in a Nuclear Power Plant (Block I Paks Nuclear Center, Hungary; Block II Kalinin Nuclear Center, Russia); -Shield System Applications for the Transport of Radioisotopes (Nuclear Technology Center, Havana, Cuba) New trends in

The founders of the ININ

International Nuclear Information System (INIS)

Bulbulian, S.

2006-01-01

The Mexican government sent the constituent law of the National Commission of Nuclear Energy (CNEN) at December 31, 1955. This classification enters in validity the January 1, 1956. However the Commission began to work in the last months 1956. This institution development two main activities: 1. A program of training on techniques with radioisotopes and nuclear instrumentation and 2. The creation of specialized programs and laboratories. Very important persons in the CNEN were the members of the Commission, the Dr. Manuel Sandoval Vallarta, the Dr. Nabor Carrillo Flores and the Atty. Jose Maria Ortiz Tirado, President of this institution. (Author)

Phosphated in aluminium 6061-T651 used in the pool of the TRIGA Mark III nuclear reactor

International Nuclear Information System (INIS)

Aguilar H, F.; Espinosa L, J.; Pena B, A.; Perez F, C.; Sanchez C, M.; Vite T, M.; Vite T, J.

2001-01-01

We characterized a phosphated coating used a substrate in aluminium 6061-T651, which is used in the container of the TRIGA Mark III nuclear reactor. Characterization was made using MEB and X-ray diffraction techniques. Coating application has the function to prevent the corrosion. Coating was probed to test adhesion in accordance with the Standard ASTM D-4541, and the corrosion process using a salt spray (fog) camera, in accordance with the Standard ASTM B-117, so as we could phosphate the welding cord. These experiences were obtained using a Deep cell. Results obtained are going to phosphate 'in situ' using a mobile device which was patented for the National Institute of Nuclear Research (ININ) in the Mexican Institute of Intellectual Property (INPI). (Author)

Program of internal training of the ININ personnel participating in the PERE of the CLV (1998). I. Initial evaluation

International Nuclear Information System (INIS)

Suarez, G.

1999-01-01

According to the document 'Program of Internal Training of the Personnel of the ININ participant in the PERE of the CLV (1998)' presented to the National Center of Disasters Prevention, it was included an action of previous evaluation to courses and practices with the purpose of knowing the state of knowledge regarding those activities that have to carry out. In this report the results of the evaluation are presented. Six questionnaires were elaborated: 1. The PERE and its procedures. 2. Control of the radiological exposure of the response personnel. 3. Control of water and foods. 4. Communications system of the PERE. 5. Monitoring, classification and decontamination of having evacuated. 6. Specialized medical attention. (Author)

Implicaciones sociales de la ciencia y la tecnología movilizadas en investigaciones STSPs. La visión del alumnado y del profesorado

OpenAIRE

Lupión Cobos, Teresa; Franco-Mariscal, Antonio Joaquín

2017-01-01

Se muestran los resultados de un estudio con profesores y estudiantes de secundaria que participaron en investigaciones que implican un modelo colaborativo estudiante-profesor-científico (STPSs) en el marco Science IES, referido a las implicaciones sociales de la ciencia y la tecnología movilizadas por estas investigaciones. Como instrumento se usaron varias cuestiones del cuestionario TOSRA sobre actitudes hacia la ciencia. Los resultados evidencian avances importantes en el cambio de actitu...

Las nuevas investigaciones traductológicas y la actualidad científica de Freud

OpenAIRE

Luiz Alberto Hanns

2011-01-01

En este artículo presento algunas de mis investigaciones sobre la traducción de Freud y su impacto en una lectura contemporánea de su obra. Partiendo de la palabra «Trieb» (pulsión/instinto) trato de mostrar que la teoría freudiana es de actualidad por ser integradora de cuerpo, cerebro y mente.

Evaluation of quinua lines obtained trough mutagenesis and conventional methods

International Nuclear Information System (INIS)

De la Cruz, E.; Garcia, J. M; Gonzalez, J.; Brunner, I.; Rubluo, A.; Guadarrama, S

2001-01-01

Chenopodium quinoa is an ancient crop that due to its hardiness, nutritive value, and ability to strive under marginal conditions is considered as a crop for modern times, considering the current demands of highly nutritive products obtained through sustainable agricultural practices. The research on quinua began in Mexico in the early eighties, considering it as an alternative crop to peasants living in impoverished regions, characterised by marginal soils. Research institutions such as the Instituto de Investigacion Agricola del Estado de Mexico (ICAMEX), Colegio de Postgraduados and Universidad Autonoma Chapingo, began to evaluate varieties from South-America and eventually established a breeding programme on quinua. One goal of the quinua research programme in Mexico is the reduction of saponin content, so a mutation breeding approach was designed in the early nineties being the Instituto Nacional de Investigaciones Nucleares (ININ) involved. In the 1999-2000 period, field trials of low saponin putative mutants obtained through irradiation of Barandales variety were performed, including also elite lines supplied by the National Germplasm Bank (NGB) at Chapingo, Mexico. The results from this trials indicate that the low saponin content character in the putative mutants remains in the M5 generation. Also eleven early maturing lines were detected. Climatic conditions prevalent in that period exhibited the resistance of quinua to spring frosts, furthermore, the evaluation of advanced lines from the (NGB) showed high variability regarding to morphological, agronomic and seed quality characters which Hill allow us to advance in the search for superior quinua lines

Evaluation of recurrent radiation with Cobalt 60 gamma rays on agronomic traits of barley (Hordeum Vulgare L.) in the R2M1 generation

International Nuclear Information System (INIS)

Vega G, M.G.

1994-01-01

The objective of this work was to evaluate the effect of recurrent radiation on agronomic traits in two barley varieties. The research was carried out at experimental fields pertaining to the Instituto de Investigacion Agropecuaria, Acuicola y Forestal of the Estado de Mexico (ICAMEX). The biological material was irradiated in the Gamma Cell 220 at the Instituto Nacional de Investigaciones Nucleares (ININ). The experimental design was divided plots in the randomized blocks, with four replications. The factor varieties (Cerro Prieto and Puebla) was assigned to the big plots mean while in the factor doses was assignated to the small plots (0, 10, 20, 30, 40 and 50 krad of gamma rays). The variables under study were: germination, number of shoots, plant height, incidence of Puccinia striiformis, days to flowering, days to physiological maturity, spike length and yield. The analysis of variance exhibited no significant differences between varieties for all the studied variables. Regarding to dose, most of the studied variables exhibited significant differences, except for incidence of Puccinia striiformis and days to flowering. The interaction variety x doses showed significance only for the variable days to flowering and days to physiological maturity. The mean separation by Tukey test at 0.05 and the regression analysis showed that the variables: germination, number of shoots, plant height, spike length and yield decreased as the dose increased. On the other hand in the variables incidence of Puccinia striiformis, days to flowering and days to physiological maturity exhibited a direct relationship with the dose. (Author)

Advance of activities report of the contract CFE-PLV/166/90. Second four-monthly

International Nuclear Information System (INIS)

Perusquia C, R.; Alonso V, G.; Hernandez M, J.L.; Montes T, J.L.

1992-09-01

In this report a relationship of finished activities of the Global Program of Fuel Management inside the reactor carried out by the ININ under the contract ININ/CFE 1990-1991 (CFE-PLV/166/90) is presented. Those areas of activities are: 1. Nuclear Data Bank area. 2. Static Simulation of the Reactor area. 3. Reload Optimization area. 4. Analysis of Transitory Events of the Reactor area. (Author)

Advance of activities report of the contract CFE-PLV/166/90. Second four-monthly; Reporte de avance de actividades del contrato CFE-PLV/166/90. Segundo cuatrimestre

Energy Technology Data Exchange (ETDEWEB)

Perusquia C, R.; Alonso V, G.; Hernandez M, J.L.; Montes T, J.L. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

1992-09-15

In this report a relationship of finished activities of the Global Program of Fuel Management inside the reactor carried out by the ININ under the contract ININ/CFE 1990-1991 (CFE-PLV/166/90) is presented. Those areas of activities are: 1. Nuclear Data Bank area. 2. Static Simulation of the Reactor area. 3. Reload Optimization area. 4. Analysis of Transitory Events of the Reactor area. (Author)

National nuclear program

International Nuclear Information System (INIS)

Costa A, D.

1980-01-01

The basic concepts of the Nuclear program that Mexico plans are presented, to develop pointing out that it constitutes an outstanding event within the history of the country, that will result in an equilibrated profit of the resources of oil exploitation consolidating each step of its technical evolution; all of this represents a challenge since it establishes a qualitative transformation in the very roots of the National economy. Being certain that oil is a non renovable natural resource, the author points out that Mexican Government has emphasized the promotion of the research of alternate resource of energy in the future. According to this panorama, the quidelines that Mexico must undertake regarding production, distribution and consumption of nuclear energy, will point primarily to a global program, which will avoid the imports of equipment and technicians, to achieve maximum advantages for the Country. It stresses the fact that this program cannot start from zero; since first, Mexico, has to import foreign technology, which once assimilated, will give to the Mexican technicians the starting point to establish the proper solution to the foreseen objectives. Therefore, any kind of International cooperation must tend to accelerate the nuclear development and to obtain the transference to technology, within a frame of respect to Mexican sovereignity. The conclusion is that the task at which Mexico aims must be based on the existing human potentiality and on the one that will be prepared in the future, and also on the knowledge and adequate exploitation of the uranium reserves, having the ININ a prominent role of creating the necessary human infrastructure, the development of a Mexican nuclear energy can be achieved in a medium term. (author)

Challenges faced by NRCs

International Nuclear Information System (INIS)

Longoria, L.C.

2001-01-01

The Mexican Nuclear Research Institute (ININ) played an important role in setting up of nuclear power plants (two) and development of fuel technology. However, with no current plans for expansion of this programme, the Institute is looking mainly into multi-cycle fuel management and life extension issues. The Institute focuses on programmes related to radioisotope and radiation applications and on the use of nuclear technologies for non-nuclear applications. The ININ is the major provider of radioisotopes for medical uses. It also promotes and uses nuclear analytical techniques for addressing a variety of problems. In non-nuclear areas some R and D examples include: the use of thermal plasma for hazardous waste incineration, biodegradation of polymers and development of separation techniques for treating industrial effluents. For preservation of knowledge, the Institute has instituted PhD. programmes in materials science, medical physics and nuclear science in collaboration with a university. (author)

Analysis of the laser oxidation kinetics process of In-In(2)O(3) MTMO photomasks by laser direct writing.

Science.gov (United States)

Xia, Feng; Zhang, Xinzheng; Wang, Meng; Liu, Qian; Xu, Jingjun

2015-11-02

One kind of novel grayscale photomask based on Metal-transparent-metallic-oxides (MTMOs) system fabricated by laser direct writing was demonstrated recently. Here, a multilayer oxidation model of In-In(2)O(3) film with a glass substrate was proposed to study the pulsed laser-induced oxidation mechanism. The distribution of the electromagnetic field in the film is calculated by the transfer matrix method. Temperature fields of the model are simulated based on the heat transfer equations with the Finite-Difference Time-Domain method. The oxidation kinetics process is studied based on the laser-induced Cabrera-Mott theory. The simulated oxidation processes are consistent with the experimental results, which mean that our laser-induced oxidation model can successfully interpret the fabrication mechanism of MTMO grayscale photomasks.

Límites de las formas organizacionales hibridas: Evaluación teórica y análisis de investigaciones empíricas

Directory of Open Access Journals (Sweden)

Maria Valentina Locher

2017-01-01

Full Text Available El concepto de formas organizacionales híbridas resulta clave para las investigaciones empíricas realizadas en el marco de la Nueva Economía Institucional. Las formas híbridas suelen considerarse un avance de dicho programa, sin embargo, aquí se argumentará lo contrario: este concepto evidencia limitaciones en las hipótesis fundamentales de aquel programa de investigaciones económicas. En este trabajo se muestra cómo el concepto de formas híbridas es utilizado para interpretar una realidad socioeconómica que desborda los límites de las formas mercantiles de coordinación económica. Luego se mostrará que ello, en el marco de la Nueva Economía Institucional, supone una paradoja insalvable. Finalmente se ensayan nuevas hipótesis para superar esta limitación y se muestran las consecuencias de este problema sobre dos investigaciones empíricas que desbordaron los límites de las formas organizacionales hibridas.

Evidence for radial flow of thermal dileptons in high-energy nuclear collisions

CERN Document Server

Arnaldi, R; Castor, J; Chaurand, B; Cicalò, C; Colla, A; Cortese, P; Damjanovic, S; David, A; De Falco, A; Devaux, A; Ducroux, L; Enyo, H; Fargeix, J; Ferretti, A; Floris, M; Förster, A; Force, P; Guettet, N; Guichard, A; Gulkanian, H R; Heuser, J M; Keil, M; Kluberg, L; Lourenço, C; Lozano, J; Manso, F; Martins, P; Masoni, A; Neves, A; Ohnishi, H; Oppedisano, C; Parracho, P; Pillot, P; Poghosyan, T; Puddu, G; Radermacher, E; Ramalhete, P; Rosinsky, P; Scomparin, E; Seixas, J; Serci, S; Shahoyan, R; Sonderegger, P; Specht, H J; Tieulent, R; Usai, G; Veenhof, R; Wöhri, H K

2008-01-01

The NA60 experiment at the CERN SPS has studied low-mass dimuon production in 158 AGeV In-In collisions. An excess of pairs above the known meson decays has been reported before. We now present precision results on the associated transverse momentum spectra. The slope parameter Teff extracted from the spectra rises with dimuon mass up to the rho, followed by a sudden decline above. While the initial rise is consistent with the expectations for radial flow of a hadronic decay source, the decline signals a transition to an emission source with much smaller flow. This may well represent the first direct evidence for thermal radiation of partonic origin in nuclear collisions.

Jose Maria Albareda (1902-1966) and the Formation of the Spanish Consejo Superior de Investigaciones Cientificas

Science.gov (United States)

Malet, Antoni

2009-01-01

Jose Maria Albareda (1902-1966) was an applied chemist and a prominent member of the Roman Catholic organization, Opus Dei, who played a crucial role in organizing the Consejo Superior de Investigaciones Cientficas (CSIC), the new scientific institution created by the Franco regime in 1939. The paper analyses first the formative years in…

Radioisotopes production for applications on the health

International Nuclear Information System (INIS)

Monroy G, F.; Alanis M, J.

2010-01-01

In the Radioactive Materials Department of the Instituto Nacional de Investigaciones Nucleares (ININ) processes have been studied and developed for the radioisotopes production of interest in the medicine, research, industry and agriculture. In particular five new processes have been developed in the last 10 years by the group of the Radioactive Materials Research Laboratory to produce: 99 Mo/ 99m Tc and 188 W/ 188 Re generators, the radio lanthanides: 151 Pm, 147 Pm, 161 Tb, 166 Ho, 177 Lu, 131 I and the 32 P. All these radioisotopes are artificial and they can be produced in nuclear reactors and some of them in particle accelerators. The radioisotope generators are of particular interest, as those of 99 Mo/ 99m Tc and 188 W/ 188 Re presented in this work, because they are systems that allow to produce an artificial radioisotope of interest continually, in these cases the 99m Tc and the 188 Re, without the necessity of having a nuclear reactor or an particle accelerator. They are compact systems armored and sure perfectly of manipulating that, once the radioactive material has decayed, they do not present radiological risk some for the environment and the population. These systems are therefore of supreme utility in places where it is not had nuclear reactors or with a continuous radioisotope supply, due to their time of decaying, for its cost or for logistical problems in their supply, like it is the case of many hospital centers, of research or industries in our country. (Author)

Los estilos educativos parentales desde los modelos interactivo y de construcción conjunta: revisión de las investigaciones

Directory of Open Access Journals (Sweden)

Concepción AROCA MONTOLÍO

2013-07-01

Full Text Available La familia como primera estructura que acoge al menor posee gran importancia en relación a otros espacios educativos en el desarrollo integral del hijo. En ella, y a través de ella, tienen lugar transmisiones decisivas y persistentes para el ser humano que vienen a realizarse por medio de estilos parentales concretos. En este artículo se plantean dos enfoques, desde nuestra perspectiva, válidos para explicar los estilos educativos en la actualidad: el modelo de construcción conjunta y el modelo interactivo, con tipologías e investigaciones que no han tenido el suficiente eco en otras publicaciones sobre el tema, y que nos parecen relevantes para abrir nuevas líneas de investigación. Los documentos científicos revisados pertenecen a investigaciones formalizadas desde la Pedagogía, Psicología y Criminología aportando, de este modo, un enfoque interdisciplinar que nos proporcionará nuevos aspectos vinculados a las consecuencias de los estilos educativos en el ajuste emocional y conductual de los hijos. Y será a partir de las conclusiones de las investigaciones realizadas desde el modelo interactivo que se nos planteen dudas ante lo establecido en estudios ampliamente aceptados.

4. Mexican School of Nuclear Physics. Papers; 4. Escuela Mexicana de Fisica Nuclear. Notas

Energy Technology Data Exchange (ETDEWEB)

Aguilera, E F; Hernandez, E; Hirsch, J [eds.

2005-07-01

The IV Mexican School of Nuclear Physics, organized by the Nuclear Physics Division of the Mexican Physics Society, takes place from June 27 to July 8, 2005 in the Nuclear Sciences and of Physics Institutes of the UNAM and in the National Institute of Nuclear Research (ININ). This school, as the previous ones, it was guided the students of the last semesters of the career of Physics, of the Post grade of the same specialty, and of other adjacent careers. To give the students a current vision of some of the topics more important of the nuclear physics and their relationship with other near areas of the physics it was the objective of this School. The School covered a wide range of theoretical and experimental courses, imparted in its majority by Mexican expert professor-investigators in the matter to who we thank them the one effort and the quality of their presentations, reflected in the content of this document. The answer of the students to the convocation was excellent, 31 students presented application for admission coming from the following institutions: Meritorious Autonomous University de Puebla, National Institute of Nuclear Research, Technological Institute of Orizaba, National Polytechnic Institute, The University of Texas at Brownsville, Autonomous University of the State de Mexico, Autonomous University of the State of Morelos, Autonomous University of Baja California, Autonomous University of San Luis Potosi, University of Guadalajara, University of Guanajuato, National Autonomous University of Mexico, University of Texas, at El Paso and University Veracruzana. They were admitted to the 22 students with the higher averages qualifications of the list of applicants. The organizers of this school thank the financial support granted by the following sponsor institutions: Nuclear Sciences Institute, UNAM, Physics Institute of UNAM, Coordination of the Scientific Research UNAM, National Institute of Nuclear Research, Nuclear Physics Division of the Mexican

Quality in research centers; Calidad en centros de investigacion

Energy Technology Data Exchange (ETDEWEB)

Colin Orozco, Leticia [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

2000-07-01

In order to be able to survive and to have successful in the globalized market, all the organizations must make an effort in learning and understanding the language of the international trade, of the standards that govern it and the technical specifications that are handled for the quality assurance of products and services. In this paper the importance that the implementation of standards ISO-9000 in the research centers has, is presented. [Spanish] Para poder sobrevivir y tener exito en el mercado globalizado todas las organizaciones tienen que esforzarse en el aprendizaje y comprension del lenguaje del comercio internacional, de las normas que lo rigen y de las especificaciones tecnicas que se manejan para asegurar la calidad de los productos y servicios. En este articulo se presenta la importancia que tiene la implantacion de las normas ISO-9000 en los centros de investigacion.

Estimation of the activity and doses to personnel which intake Iodine 131 by coffee consumption in a cabinet of Nuclear Medicine; Estimacion de la actividad y dosis a personal que ingirio Yodo 131 por consumo de cafe en un gabinete de Medicina nuclear

Energy Technology Data Exchange (ETDEWEB)

Ruiz C, M.A.; Alfaro L, M.; Salinas, J.A.; Molina, G. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2003-07-01

Soon after an incident in a cabinet of nuclear medicine, its were carried out in the National Institute of Nuclear Research of Mexico (ININ), a series of bio essays measurements by whole-body counting to six people attributed to this cabinet. Of six people, five are classified as Occupational Exposed Personnel (POE), and the other one that works as secretary, according to the General Regulation of Radiological Safety, is classified as public member. Six people that were involved in this incident, the one which presumably it took place among November 15 and 18, 2002 and that it consisted on the effusion of a vial containing an unknown quantity of Iodine-131 to a coffeepot, they ingested coffee in diverse quantities. The Iodine-131 is used in nuclear medicine, so much for the illnesses diagnostic like in the treatment of thyroid cancer and of hyperthyroidism. (Author)

Modern analytic methods applied to the art and archaeology

International Nuclear Information System (INIS)

Tenorio C, M. D.; Longoria G, L. C.

2010-01-01

The interaction of diverse areas as the analytic chemistry, the history of the art and the archaeology has allowed the development of a variety of techniques used in archaeology, in conservation and restoration. These methods have been used to date objects, to determine the origin of the old materials and to reconstruct their use and to identify the degradation processes that affect the integrity of the art works. The objective of this chapter is to offer a general vision on the researches that have been realized in the Instituto Nacional de Investigaciones Nucleares (ININ) in the field of cultural goods. A series of researches carried out in collaboration with national investigators and of the foreigner is described shortly, as well as with the great support of degree students and master in archaeology of the National School of Anthropology and History, since one of the goals that have is to diffuse the knowledge of the existence of these techniques among the young archaeologists, so that they have a wider vision of what they could use in an in mediate future and they can check hypothesis with scientific methods. (Author)

Modern analytic methods applied to the art and archaeology; Metodos analiticos modernos aplicados al arte y la arqueologia

Energy Technology Data Exchange (ETDEWEB)

Tenorio C, M. D.; Longoria G, L. C., E-mail: dolores.tenorio@inin.gob.m [ININ, Departamento de Quimica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

The interaction of diverse areas as the analytic chemistry, the history of the art and the archaeology has allowed the development of a variety of techniques used in archaeology, in conservation and restoration. These methods have been used to date objects, to determine the origin of the old materials and to reconstruct their use and to identify the degradation processes that affect the integrity of the art works. The objective of this chapter is to offer a general vision on the researches that have been realized in the Instituto Nacional de Investigaciones Nucleares (ININ) in the field of cultural goods. A series of researches carried out in collaboration with national investigators and of the foreigner is described shortly, as well as with the great support of degree students and master in archaeology of the National School of Anthropology and History, since one of the goals that have is to diffuse the knowledge of the existence of these techniques among the young archaeologists, so that they have a wider vision of what they could use in an in mediate future and they can check hypothesis with scientific methods. (Author)

Experimental study of the burned of nuclear fuel by the gamma spectroscopy method

International Nuclear Information System (INIS)

Amador V, P.

2009-01-01

Accurate information on nuclear fuel burnup is of vital importance in reactor operation, fuel management and fuel-characteristics studies. Conventionally fuel management of the TRIGA III Reactor from the National Institute of Nuclear Research (ININ) is done through the thermal balance method (management) of the power generated during reactor operation, since it is known that with 1.24 grams of 235 U is possible to generate a power or 1 MW per day during the reactor operation. On the other hand, it is possible to calculate the operation time in days during a power of 1 MW with the help of the data registered in logs. With the information just mentioned one can calculate the quantity of 235 U consumed in the fuel during a complete period of irradiation. In order to compare and prove that the burnup values, calculated through the thermal balance method, are correct, the ININ implemented, for the first time, the gamma-ray spectroscopy method as an experimental technique to calculate the burnup of several fuel elements. Gamma-ray spectroscopy is a nondestructive method, so that the integrity of the fuel element is not affected which is of great importance. Since there is a direct relation between the activity of 137 Cs contained in the fuel elements and a series of constants which are unique for the radioisotope and for the high resolution system, the problem just simplifies in measuring the 137 Cs activities. Furthermore the 137 Cs concentration equation was developed theoretically and I wrote a computer program (AMAVAL) in Fortran. The task of this program is to calculate the concentrations and the activity through the use of the equation just mentioned and the history of each fuel element. The purpose of this is to compare and validate the experimental activities with the theoretical ones for each fuel element. (Author)

Improvement of the obtention process of phosphorus-32 of the ININ through the application of nuclear analytical techniques; Perfeccionamiento del proceso de obtencion de fosforo-32 del ININ, mediante la aplicacion de tecnicas analiticas nucleares

Energy Technology Data Exchange (ETDEWEB)

Zepeda R, C P [UMSNH, Facultad de Ingenieria Quimica, Morelia, Michoacan (Mexico)

2007-07-01

The phosphorus-32, is radioisotope emitting pure {beta}{sup -}, of maximum energy 1.71 MeV with an average life of 14.28 days, and that has application in the industry, agriculture, medicine and biology. The {sup 32} P, produced by means of two nuclear reactions {sup 32} S(n,p){sup 32} P and {sup 31} P (n,{gamma}){sup 32} P; by the facility of handling of sulfur, his low cost and its fast acquisition in the market. I selected the reaction {sup 32} S(n,p){sup 32} P. To produce {sup 32} P it is necessary to prepare and to characterize the target (S-{alpha}) that is obtained from the purification of the raw material, make the mathematical calculations of irradiation, irradiation of the target in the nuclear reactor TRIGA Mark III, radiochemical separation of {sup 32} P of {sup 32} S by a dry distillation method and an hydrolysis of {sup 32} P with diluted HCl obtaining H{sub 3}{sup 32}PO{sub 4} and finally quality control. In the order to make the radiochemistry separation it was necessary to make previous modifications to the process guarantee the quality of product ({sup 32} P), and security of the operator. (Author)

Seminar on utilization of nuclear techniques in the agricultural research carried out in FONAIAP. Abstracts and lectures; Seminario sobre utilizacion de tecnicas nucleares en la investigacion agropecuaria realizada en el FONAIAP. Resumenes y ponencias

Energy Technology Data Exchange (ETDEWEB)

Romero S, Alfredo [ed.; Bracamonte, Magaly [Fondo Nacional de Investigaciones Agropecuarias (FONAIAP), Centro Nacional de Investigaciones Agropecuarias (CENIAP), Maracay (Venezuela)

1997-07-01

tropicales y su transferencia a Brachiaria humidicola en asociacion; unidad de analisis isotopicos estables N{sup 1}5; efecto de diferentes formas de colocacion del fertilizante en el suelo en la eficiencia de uso del N evaluada mediante la tecnica isotopica y el N absorbido por el cultivo; aplicacion de progesterona y testosterona en el diagnostico y control de la reproduccion en ganaderias mestizas; avances en el seguimiento de sistemas de produccion en ganaderia de doble proposito en el area de Guayabal, estado Guarico; investigaciones acuicolas con tecnicas de energia nuclear; desarrollo de la base de datos bibliografia edafologica venezolana.

Control system of liquid effluents generated in treatment with I-131; Sistema de control de efluentes liquidos generados en el tratamiento con I-131

Energy Technology Data Exchange (ETDEWEB)

Garcia M, T.; Ruiz C, M. A.; Angeles C, A.; Ramirez S, R., E-mail: teodoro.garcia@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2015-09-15

In recent years, nuclear medicine has developed greatly in our country and around the world. Techniques for both medical diagnosis and therapy have increased the use of radiopharmaceuticals, notably the I-131. In Mexico there are around 150 nuclear medicine establishments authorized by the Comision Nacional de Seguridad Nuclear y Salvaguardias. Most of these establishments do not have an appropriate facility for the treatment of radioactive liquid effluents, to ensure compliance with the concentration limits established in the regulations. The Instituto Nacional de Investigaciones Nucleares (ININ) developed and implemented successfully, a control system of radioactive effluents (named SACEL) from a nuclear medicine facility. This system ensures an effective compliance with regulations and also better management and control of these radioactive effluents. Calculations and design of SACEL were made with respect to I-131, because is one of the most commonly used in radiotherapy and medical diagnostics, besides its half-life is greater in relation to other radionuclides. SACEL is comprised of four storage tanks and decay and a fifth tank for measuring the concentration of I-131 and later discharge to the drain; these tanks are connected to an automated system that controls the effluents passage. The calculation to determine the volume of the tanks was carried out according to the demand that has the hospital, to the maximum activity being poured in effluents and time required to decay. In this paper the design and installation of SACEL system, in addition to functioning as a facility that enables the Hospital meet the required standards is presented. Dose calculations performed with MCNPX and the methodology used in the calibration of the detection system is also presented. (Author)

Control system of liquid effluents generated in treatment with I-131

International Nuclear Information System (INIS)

Garcia M, T.; Ruiz C, M. A.; Angeles C, A.; Ramirez S, R.

2015-09-01

In recent years, nuclear medicine has developed greatly in our country and around the world. Techniques for both medical diagnosis and therapy have increased the use of radiopharmaceuticals, notably the I-131. In Mexico there are around 150 nuclear medicine establishments authorized by the Comision Nacional de Seguridad Nuclear y Salvaguardias. Most of these establishments do not have an appropriate facility for the treatment of radioactive liquid effluents, to ensure compliance with the concentration limits established in the regulations. The Instituto Nacional de Investigaciones Nucleares (ININ) developed and implemented successfully, a control system of radioactive effluents (named SACEL) from a nuclear medicine facility. This system ensures an effective compliance with regulations and also better management and control of these radioactive effluents. Calculations and design of SACEL were made with respect to I-131, because is one of the most commonly used in radiotherapy and medical diagnostics, besides its half-life is greater in relation to other radionuclides. SACEL is comprised of four storage tanks and decay and a fifth tank for measuring the concentration of I-131 and later discharge to the drain; these tanks are connected to an automated system that controls the effluents passage. The calculation to determine the volume of the tanks was carried out according to the demand that has the hospital, to the maximum activity being poured in effluents and time required to decay. In this paper the design and installation of SACEL system, in addition to functioning as a facility that enables the Hospital meet the required standards is presented. Dose calculations performed with MCNPX and the methodology used in the calibration of the detection system is also presented. (Author)

Estimation of the activity and doses to personnel which intake Iodine 131 by coffee consumption in a cabinet of Nuclear Medicine

International Nuclear Information System (INIS)

Ruiz C, M.A.; Alfaro L, M.; Salinas, J.A.; Molina, G.

2003-01-01

Soon after an incident in a cabinet of nuclear medicine, its were carried out in the National Institute of Nuclear Research of Mexico (ININ), a series of bio essays measurements by whole-body counting to six people attributed to this cabinet. Of six people, five are classified as Occupational Exposed Personnel (POE), and the other one that works as secretary, according to the General Regulation of Radiological Safety, is classified as public member. Six people that were involved in this incident, the one which presumably it took place among November 15 and 18, 2002 and that it consisted on the effusion of a vial containing an unknown quantity of Iodine-131 to a coffeepot, they ingested coffee in diverse quantities. The Iodine-131 is used in nuclear medicine, so much for the illnesses diagnostic like in the treatment of thyroid cancer and of hyperthyroidism. (Author)

The Management of Nuclear Materials in a Research Establishment; Gestion des Matieres Nucleaires dans un Centre de Recherche; Uchet yadernykh materialov v nauchno-issledovatel'skom uchrezhdenii; Administracion de Sustancias Nucleares en un Centro de Investigaciones

Energy Technology Data Exchange (ETDEWEB)

Wright, W. J.; Hocking, D. R. [Australian Atomic Energy Commission Research Establishment, Lucas Heights, NSW (Australia)

1966-02-15

The functions of a nuclear materials management scheme are reviewed in relation to the activities of research establishments. Since these activities are normally non-repetitive, there is little opportunity to establish statistical quality and quantity control. The risks of an error in the material accounts must therefore be established from relatively few analytical measurements and the implications of this are discussed. Similar arguments are applied to illustrate the difficulties of quality control on suppliers when a large variety of materials are being purchased in small quantities. (author) [French] Les auteurs examinent le role d'un systeme de gestion des matieres nucleaires applique aux activites des centres de recherche. Comme ces activites ne sont normalement pas appelees a se repeter, il n'est guere possible d'organiser un controle statistique quantitatif et qualitatif. Il faut donc determiner les possibilites d'erreurs dans la comptabilite matieres en s'appuyant sur un nombre relativement restreint de mesures analytiques et les auteurs examinent les conclusions a tirer de cette situation. Ils recourent a une argumentation analogue pour illustrer les difficultes inherentes au controle de la qualite des matieres livrees par les fournisseurs lorsqu'il doit porter sur une grande diversite de matieres en petites quantites. (author) [Spanish] Los autores examinan el funcionamiento de un sistema de administracion de materiales nucleares en relacion con las actividades de los centros de investigaciones. Como estas actividades son por lo comun muy diversas, hay pocas oportunidades de establecer un control estadistico de la calidad y la cantidad. Por ello es necesario determinar los riesgos de error en la contabilidad de los materiales partiendo de un numero relativamente reducido de mediciones analiticas; en la memoria se examinan las consecuencias de este hecho. Los autores aplican razonamientos analogos para poner de manifiesto las dificultades con que, en el

4. Mexican School of Nuclear Physics

International Nuclear Information System (INIS)

Aguilera, E.F.; Hernandez, E.; Hirsch, J.G. -mail: svp@nuclear.inin.mx

2005-01-01

The IV Mexican School of Nuclear Physics, organized by the Nuclear Physics Division of the Mexican Physics Society, taken place from June 27 to July 8, 2005 in the Institute of Nuclear Sciences and the Institute of Physics of the UNAM and in the National Institute of Nuclear Research (ININ). This school, as the previous ones, it was guided to the students of the last semesters of the career of Physics, of the Post grade of the same specialty, and of other adjacent careers. To give the students a current vision of some of the topics more important of the nuclear physics and their relationship with other near areas of the physics it was the objective of this School. The School covered a wide range of theoretical and experimental courses, imparted in its majority by Mexican expert professor-investigators in the subject to whom we thank them the one effort and the quality of their presentations, reflected in the content of this document. The answer of the students to the convocation was excellent, 31 students presented application for admission coming from the following institutions: Meritorious Autonomous University of Puebla, National Institute of Nuclear Research, Technological Institute of Orizaba, National Polytechnic Institute, The University of Texas at Brownsville, Autonomous University of the State de Mexico, Autonomous University of the State of Morelos, Autonomous University of Baja California, Autonomous University of San Luis Potosi, University of Guadalajara, University of Guanajuato, National Autonomous University of Mexico, University of Texas, at El Paso and University Veracruzana. They were admitted to those 22 students with the higher averages qualifications of the list of applicants. The organizers of this school thank the financial support granted by the following sponsor institutions: Institute of Nuclear Sciences, UNAM, Institute of Physics, UNAM, Coordination of the Scientific Research, UNAM, National Institute of Nuclear Research, Nuclear

Design and construction of an automatic measurement electronic system and graphical neutron flux for the subcritical reactor; Diseno y construccion de un sistema electronico automatico de medicion y graficado del flujo neutronico para el reactor subcritico

Energy Technology Data Exchange (ETDEWEB)

Gonzalez M, J.L.; Balderas, E.G.; Rivero G, T. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

1997-07-01

The National Institute of Nuclear Research (ININ) has in its installations with a nuclear subcritical reactor which was designed and constructed with the main purpose to be used in the nuclear sciences education in the Physics areas and Reactors engineering. Within the nuclear experiments that can be realized in this reactor are very interesting those about determinations of neutron and gamma fluxes spectra, since starting from these some interesting nuclear parameters can be obtained. In order to carry out this type of experiments different radioactive sources are used which exceed the permissible doses by far to human beings. Therefore it is necessary the remote handling as of the source as of detectors used in different experiments. In this work it is presented the design of an electronic system which allows the different positions inside of the tank of subcritical reactor at ININ over the radial and axial axes in manual or automatic ways. (Author)

Design and construction of an automatic measurement electronic system and graphical neutron flux for the subcritical reactor

International Nuclear Information System (INIS)

Gonzalez M, J.L.; Balderas, E.G.; Rivero G, T.

1997-01-01

The National Institute of Nuclear Research (ININ) has in its installations with a nuclear subcritical reactor which was designed and constructed with the main purpose to be used in the nuclear sciences education in the Physics areas and Reactors engineering. Within the nuclear experiments that can be realized in this reactor are very interesting those about determinations of neutron and gamma fluxes spectra, since starting from these some interesting nuclear parameters can be obtained. In order to carry out this type of experiments different radioactive sources are used which exceed the permissible doses by far to human beings. Therefore it is necessary the remote handling as of the source as of detectors used in different experiments. In this work it is presented the design of an electronic system which allows the different positions inside of the tank of subcritical reactor at ININ over the radial and axial axes in manual or automatic ways. (Author)

Work Report 1994-1995 Instituto de Investigaciones Electricas (Electrical Research Institute)

International Nuclear Information System (INIS)

Instituto de Investigaciones Electricas.

1995-01-01

The Instituto de Investigaciones Electricas (Electrical Research Institute) collaborates with the Comision Federal de Electricidad (Electricity Federal Commission) and with the public and private entities of the electric sector in the solution of scientific and technological problems. The activity of the Institute follows the lineaments of the Secretaria de Energia (Energy Secretariat) and is inside the frame of the programs of national modernization. This two-year report presents in seven sections the activities of the Institute; the sections are: 1. Importance of the IIE in the economic context of the Governmental sector. 2. Orientations of sectorial structural policy and main operation results. 3. Structural change, 1994-1995. 4. Research and Development, advances and results. 5. Budget and financial situation. 6. Statistical Annex. 7. Glossary

XXXIX Symposium on Nuclear Physics

International Nuclear Information System (INIS)

Acosta, Luis; Bijker, Roelof

2016-01-01

In the present volume of Journal of Physics: Conference Series we publish the proceedings of the “XXXIX Symposium on Nuclear Physics”, that was held from January 5-8, 2016 at the Hacienda Cocoyoc, Morelos, Mexico. The proceedings consist of 20 contributions that were presented as plenary talks at the meeting. The abstracts of all contributions, invited talks and posters, were published in the Conference Handbook. The Symposium on Nuclear Physics has a long and distinguished history. From the beginning it was intended to be a relatively small meeting designed to bring together some of the leading nuclear scientists in the field. Its most distinctive feature is to provide a forum for specialists in different areas of nuclear physics, both theorists and experimentalists, students, postdocs and senior scientists, in a relaxed and informal environment providing them with a unique opportunity to exchange ideas. After the first meeting in Oaxtepec in 1978, the Symposium was organized every year without interruption which makes the present one the 39th in a row. The scientific program consisted of 29 invited talks and a poster session on a wide variety of hot topics in contemporary nuclear physics, ranging from the traditional fields of nuclear structure and nuclear reactions to radioactive beams, nuclear astrophysics, hadronic physics, fundamental symmetries and relativistic heavy ions, as well as progress reports of large international projects like the HAWC Observatory in Puebla, Mexico, and the ATLAS and ALICE Collaborations of the LHC accelerator at CERN, Switzerland. In addition, there were several contributions highlighting interesting new results from foreign laboratories like Notre Dame, RIKEN, Jefferson Lab, Oak Ridge, INFN-Legnaro and INFN-LNS, as well as Mexican laboratories at ININ, LEMA and the Carlos Graef Laboratory at IF-UNAM. On the theoretical side there were talks on recent developments in nuclear structure, weakly bound nuclei, cluster models

Physiochemical and spectroscopic behavior of actinides and lanthanides in solution, their sorption on minerals and their compounds formed with macromolecules

International Nuclear Information System (INIS)

Jimenez R, M.

2010-01-01

From the chemical view point, the light actinides has been those most studied; particularly the uranium, because is the primordial component of the nuclear reactors. The chemical behavior of these elements is not completely defined, since they can behave as transition metals or metals of internal transition, as they are the lanthanides. The actinides are radioactive; between them they are emitters of radiation alpha, highly toxic, of live half long and some very long, and artificial elements. For all this, to know them sometimes is preferable to use their chemical similarity with the lanthanides and to study these. In particular, the migration of emitters of radiation alpha to the environment has been studied taking as model the uranium. It is necessary to mention that actinides and lanthanides elements are in the radioactive wastes of the nuclear reactors. In the Chemistry Department of the Instituto Nacional de Investigaciones Nucleares (ININ) the researches about the actinides and lanthanides began in 1983 and, between that year and 1995 several works were published in this field. In 1993 the topic was proposed as a Department project and from then around of 13 institutional projects and managerial activity have been developed, besides 4 projects approved by the National Council of Science and Technology. The objective of the projects already developed and of the current they have been contributing knowledge for the understanding of the chemical behavior of the lanthanides and actinides, as much in solution as in the solid state, their behavior in the environment and the chemistry of their complexes with recurrent and lineal macromolecules. (Author)

Papers of the Third Annual Congress of the Mexican Nuclear Society, C.A.; Memorias del Tercer Congreso Anual de la Sociedad Nuclear Mexicana, A.C.

Energy Technology Data Exchange (ETDEWEB)

NONE

1992-11-01

Once again the Sociedad Nuclear Mexicana fulfill its annual Congress being this time the installations of the Instituto de Investigaciones Electricas the place for the event with a collection of forty documents in the following areas: modelling of nuclear systems, expert systems, dosimetry, experimentation and fuel cycle among others. This significant number of papers is a sample of the great interest of the nuclear community in the participation in this forum presenting its more recent works. The participants belongs to the main institutions in the country dedicated to the technological development of the nuclear area in its different branches. Our best wishes are that this event allows not only the exchange of ideas and the knowledge of the type of works that other colleagues are developing, but also to present the opportunity to live together in a pleasant environment where the main ingredient be the surmounting spirit. We welcome all the participants to the Third Congress of our Society. (Author).

Redes de contacto sociales: ?(spanishfactor clave para la labor de investigacion universitaria?

Directory of Open Access Journals (Sweden)

Hermosilla Yenia Melo

2002-01-01

Full Text Available Dentro del ámbito de la labor universitaria, el nexo permanente entre docencia, investigación y difusión, constituye un factor de vital importancia. Bajo este prisma, un elemento fundamental para la formación permanente del personal académico es su compromiso con la realización de investigaciones, que contribuyan a generar nuevos conocimientos y a ampliar sus perspectivas de desarrollo. Siguiendo esta línea de razonamiento, este artículo examina el medio ambiente de investigación universitaria, específicamente, el tema de la vinculación o red de contactos de 19 investigadores, pertenecientes a diferentes áreas del conocimiento, con la sociedad circundante y el mundo de la investigación. Las bases teóricas del estudio se relacionan con dos niveles de análisis. El primero de naturaleza sociológica, se centra en la relación ciencia-sociedad. El segundo, de naturaleza psicológica, aborda aspectos que se refieren a la relación individuo-conocimiento. La perspectiva cualitativa, a través de una aproximación fenomenográfica, describe la metodología empleada en este estudio. Por ello, las percepciones del grupo de académicos participantes, fueron conocidas a través de entrevistas en profundidad. Los resultados revelan características de las redes de contacto, motivaciones que originan estos vínculos, estrategias relacionadas con su forma de construcción y de utilización, efectos en la labor de investigación. El estudio concluye con reflexiones finales, entre las que se destacan posibles proyectos para futuras investigaciones sobre el tema abordado.

Radioisotopes production for applications on the health; Produccion de radioisotopos para aplicaciones en la salud

Energy Technology Data Exchange (ETDEWEB)

Monroy G, F.; Alanis M, J., E-mail: fabiola.monroy@inin.gob.m [ININ, Departamento de Materiales Radiactivos, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

In the Radioactive Materials Department of the Instituto Nacional de Investigaciones Nucleares (ININ) processes have been studied and developed for the radioisotopes production of interest in the medicine, research, industry and agriculture. In particular five new processes have been developed in the last 10 years by the group of the Radioactive Materials Research Laboratory to produce: {sup 99}Mo/{sup 99m}Tc and {sup 188}W/{sup 188}Re generators, the radio lanthanides: {sup 151}Pm, {sup 147}Pm, {sup 161}Tb, {sup 166}Ho, {sup 177}Lu, {sup 131}I and the {sup 32}P. All these radioisotopes are artificial and they can be produced in nuclear reactors and some of them in particle accelerators. The radioisotope generators are of particular interest, as those of {sup 99}Mo/{sup 99m}Tc and {sup 188}W/{sup 188}Re presented in this work, because they are systems that allow to produce an artificial radioisotope of interest continually, in these cases the {sup 99m}Tc and the {sup 188}Re, without the necessity of having a nuclear reactor or an particle accelerator. They are compact systems armored and sure perfectly of manipulating that, once the radioactive material has decayed, they do not present radiological risk some for the environment and the population. These systems are therefore of supreme utility in places where it is not had nuclear reactors or with a continuous radioisotope supply, due to their time of decaying, for its cost or for logistical problems in their supply, like it is the case of many hospital centers, of research or industries in our country. (Author)

4. Mexican School of Nuclear Physics. Papers

International Nuclear Information System (INIS)

Aguilera, E.F.; Hernandez, E.; Hirsch, J.

2005-01-01

The IV Mexican School of Nuclear Physics, organized by the Nuclear Physics Division of the Mexican Physics Society, takes place from June 27 to July 8, 2005 in the Nuclear Sciences and of Physics Institutes of the UNAM and in the National Institute of Nuclear Research (ININ). This school, as the previous ones, it was guided the students of the last semesters of the career of Physics, of the Post grade of the same specialty, and of other adjacent careers. To give the students a current vision of some of the topics more important of the nuclear physics and their relationship with other near areas of the physics it was the objective of this School. The School covered a wide range of theoretical and experimental courses, imparted in its majority by Mexican expert professor-investigators in the matter to who we thank them the one effort and the quality of their presentations, reflected in the content of this document. The answer of the students to the convocation was excellent, 31 students presented application for admission coming from the following institutions: Meritorious Autonomous University de Puebla, National Institute of Nuclear Research, Technological Institute of Orizaba, National Polytechnic Institute, The University of Texas at Brownsville, Autonomous University of the State de Mexico, Autonomous University of the State of Morelos, Autonomous University of Baja California, Autonomous University of San Luis Potosi, University of Guadalajara, University of Guanajuato, National Autonomous University of Mexico, University of Texas, at El Paso and University Veracruzana. They were admitted to the 22 students with the higher averages qualifications of the list of applicants. The organizers of this school thank the financial support granted by the following sponsor institutions: Nuclear Sciences Institute, UNAM, Physics Institute of UNAM, Coordination of the Scientific Research UNAM, National Institute of Nuclear Research, Nuclear Physics Division of the Mexican

ENSAYO: RELACIONES DE GÉNERO EN INVESTIGACIONES BASADAS EN EXPERIENCIAS DE HISTORIA ORAL

Directory of Open Access Journals (Sweden)

Olga Cabrera García

2008-08-01

Full Text Available Este ensayo se propone analizar algunas cuestiones acerca de la perspectiva multidisciplinar en la metodología de la historia oral. Las investigaciones de historia oral tienen algunas características que le dan su especificidad pero, el artículo se concentra sobre dos de ellas: la entrevista y la construcción del documento oral. Se presentan algunas experiencias de ambas etapas de la investigación aunque el énfasis recae sobre el segundo aspecto. Se estudia la vida cotidiana así como la memoria, vinculadas al tiempo, con el propósito de comprender la historia oral.

Improvement of the operation of wheels mobile robot TRASMAR2

International Nuclear Information System (INIS)

Guerra C, D. A.; Tovar M, R.; Gonzalez M, J. L.; Segovia de los Rios, A.

2013-10-01

In the Instituto Nacional de Investigaciones Nucleares (ININ), personnel have been working in the development of wheels mobile robots for the surveillance and supervision of contaminated areas, and for the radioactive material transport. One of these achievements is the wheels mobile robot denominated TRASMAR2, which is sought that works in the tele operated form using net technologies, in particular, using a Web page by means of the client-servant technology. For this, diverse circuits and control programs have been development with the purpose that the robot carries out the movements that are required, being considered the use of sensors to avoid collisions. The different programs have been implemented in different micro controllers, and although the robot was working, is necessary to optimize and to concentrate these programs on a single micro controller. In this work are presented the analysis of the previously implemented programs, as the realized changes, including new programs required to improve the robot operation. As complement, was development and implemented an alternative proposal of the robot's tele operation by means of a Web page using Lab view, which is described in the work. With this proposal tele operate the robot was achieved, although its application is evaluating due to the resources that is consumes. (author)

Improvement of the operation of wheels mobile robot TRASMAR2; Mejora del funcionamiento del robot movil de ruedas TRASMAR2

Energy Technology Data Exchange (ETDEWEB)

Guerra C, D. A.; Tovar M, R. [Instituto Tecnologico de San Luis Potosi, Av. Tecnologico s/n, Col. UPA Soledad de Graciano Sanchez, 78437 San Luis Potosi (Mexico); Gonzalez M, J. L.; Segovia de los Rios, A., E-mail: deniwar@gmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2013-10-15

In the Instituto Nacional de Investigaciones Nucleares (ININ), personnel have been working in the development of wheels mobile robots for the surveillance and supervision of contaminated areas, and for the radioactive material transport. One of these achievements is the wheels mobile robot denominated TRASMAR2, which is sought that works in the tele operated form using net technologies, in particular, using a Web page by means of the client-servant technology. For this, diverse circuits and control programs have been development with the purpose that the robot carries out the movements that are required, being considered the use of sensors to avoid collisions. The different programs have been implemented in different micro controllers, and although the robot was working, is necessary to optimize and to concentrate these programs on a single micro controller. In this work are presented the analysis of the previously implemented programs, as the realized changes, including new programs required to improve the robot operation. As complement, was development and implemented an alternative proposal of the robot's tele operation by means of a Web page using Lab view, which is described in the work. With this proposal tele operate the robot was achieved, although its application is evaluating due to the resources that is consumes. (author)

Data acquisition system for electronic paramagnetic resonance spectrophotometer

International Nuclear Information System (INIS)

Pena Eguiluz, R.

1992-01-01

In the Atomic and Molecular Physics Laboratory at the Physics Department of the Instituto Nacional de Investigaciones Nucleares (ININ), there is in operation an electronic paramagnetic resonance spectrometer (EPR). This equipment is utilized for determine, the distribution of the absorbed energy intensity for a sample of paramagnetic substance by means of the study and analysis of its emission lines spectrum. The useful information is provided as a graphic result showing the spectrum corresponding to the analyzed sample. In similar devices like this, the researchers problem, trying to get the important information, is a hard and imprecise work, thus, this process of find the ordinate magnitudes of a approximately two hundred points, equal spaced in the spectrum, is carried out completely by hand. After this, the information is captured and processed in a personal computer. As a solution for this problem, an interface in both aspects, hardware and software adaptable to a personal computer, was designed and constructed. This interface is able to: a) To get and digitized the analogical signal, that represents the corresponding spectrum curve. b) It stores the digitized information in files and c) It displays in graphic mode the stored data, and then these are normalized in order to be transferred to a statistics and analytical software packets (Author)

Behavior of exposed human lymphocytes to a neutron beam of the Reactor TRIGA Mark III

International Nuclear Information System (INIS)

Carbajal R, M. I.; Arceo M, C.; Aguilar H, F.; Guerrero C, C.

2012-10-01

The living beings are permanently exposed to radiations of natural origin: cosmic and geologic, as well as the artificial radiations that come from sources elaborated by the man. The artificial sources have an important use in the medical area. Particularly has been increased the neutrons use due to the effectiveness that they have to damage the cells with regard to other radiation types. The biological indicator of exposition to ionizing radiation more reliable is the chromosomal aberrations study, specifically the dicentrics in human lymphocytes. This test allows, establishing the exposition dose in function of the damage quantity. The dicentrics have a behavior in function of the dose. The calibration curve that describes this behavior is specific for each type of ionizing radiation. In the year 2006 beginning was given to the expositions of human lymphocytes to a neutron beam generated in the reactor TRIGA Mark III of the Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico. Up to 2008 the response dose curve comprised an interval of exposition time of up to 30 minutes. Moreover, the interval between 10 an 20 minutes is included, since was observed that this last is indispensable for the adjustment waited in a lineal model. (Author)

Behavior of exposed human lymphocytes to a neutron beam of the Reactor TRIGA Mark III; Comportamiento de linfocitos humanos expuestos a un haz de neutrones del Reactor Triga Mark III

Energy Technology Data Exchange (ETDEWEB)

Carbajal R, M. I.; Arceo M, C.; Aguilar H, F.; Guerrero C, C., E-mail: citlali.guerrero@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2012-10-15

The living beings are permanently exposed to radiations of natural origin: cosmic and geologic, as well as the artificial radiations that come from sources elaborated by the man. The artificial sources have an important use in the medical area. Particularly has been increased the neutrons use due to the effectiveness that they have to damage the cells with regard to other radiation types. The biological indicator of exposition to ionizing radiation more reliable is the chromosomal aberrations study, specifically the dicentrics in human lymphocytes. This test allows, establishing the exposition dose in function of the damage quantity. The dicentrics have a behavior in function of the dose. The calibration curve that describes this behavior is specific for each type of ionizing radiation. In the year 2006 beginning was given to the expositions of human lymphocytes to a neutron beam generated in the reactor TRIGA Mark III of the Instituto Nacional de Investigaciones Nucleares (ININ) in Mexico. Up to 2008 the response dose curve comprised an interval of exposition time of up to 30 minutes. Moreover, the interval between 10 an 20 minutes is included, since was observed that this last is indispensable for the adjustment waited in a lineal model. (Author)

Formación de saberes políticos: aportes de investigaciones psicológicas

OpenAIRE

Lenzi, Alicia; D'Avirro, María Julieta; Pataro, María Alejandra; Areste, María Silvina

2007-01-01

Se examina la cuestión de los saberes políticos en niños, jóvenes y adultos, desde las contribuciones de investigaciones de la psicología del desarrollo y la psicología educacional, con ciertas referencias a la psicología social y política. Subyace a esta cuestión el polémico concepto de ciudadanía y concepciones divergentes acerca de la formación ciudadana y sus prácticas. La literatura especializada revela una creciente preocupación por la formación de los futuros ciudadanos ante la mundial...

ELEMENTOS METODOLOGICOS INICIALES EN UN PROCESO DE INVESTIGACION - EXTENSION. EL CASO DE CAÑO NEGRO

Directory of Open Access Journals (Sweden)

Ligia Martín José Francisco Miranda

2012-11-01

Full Text Available Aprovechando la realización de este seminario, hemos querido presentar ante los extensionistas de nuestra Facultad, unas primeras notas acerca del "Proyecto Piloto para la Gestión Productiva-Ambiental con los Pobladores de Caño Negro, Refugio de Vida Silvestre". El propósito de este trabajo inicial, es poner en discusión algunos de los elementos metodológicos que hemos ubicado, al momento de arrancar con un proyecto de investigación-extensión, que pretende recurrir a los procedimientos desarrollados y utilizados en los procesos de INVESTIGACION PARTICIPATIVA, INVESTIGACION ACCION. Además y haciendo eco de las intensiones de este seminario, se espera sirva de elemento para la reflexión conjunta de aspectos de esta naturaleza, que a la postre resultan ser problemas comunes o al menos semejantes, y que además, están en el tapete de la discusión y el análisis. Como la mayoría de ustedes saben, se trata del proyecto de extensión que las escuelas de Sociología, Ambientales, Planificación y Promoción Social y Geografía, iniciaron en marzo de este año en Caño Negro, distrito del cantón de Los Chiles, Alajuela, el cual describiremos con más detalle a continuación.

La sociogénesis del modo de corporalidad moderno. El problema del objeto en las investigaciones sobre cuerpo a partir de la teoría crítica reflexiva

Directory of Open Access Journals (Sweden)

Emiliano Gambarotta

2016-06-01

Full Text Available Resumen ¿Cuál es el objeto de estudio de las investigaciones en torno al cuerpo? Esa pregunta epistemológica es el núcleo de este trabajo, el cual problematiza, por tanto, la noción de cuerpo que ponemos en juego en tales investigaciones. Para ello y en discusión con las perspectivas sustancialistas que prevalecen en el área, se propone una concepción crítico-reflexiva que gira en torno a la constelación del modo de corporalidad moderno, estudiando su sociogénesis, tarea que se realiza a partir de una crítica inmanente de los trabajos de Elias sobre el proceso civilizatorio, ya que a través de ellos puede problematizarse la emergencia en lo sociohistórico del cuerpo específicamente moderno, aquel que constituye el objeto de dichas investigaciones en torno al cuerpo.

Una experiencia de capacitacion-investigacion a docentes coordinadores de pronoei del callao

Directory of Open Access Journals (Sweden)

Carmen Coloma

1992-06-01

Full Text Available En 1983la Facultad de Educación de la Pontificia Universidad Católica del Perú conjuntamente con la Fundación de Investigaciones Educativas High Scope, inició un Proyecto de Capacitación a personal no profesional en servicio. Esta experiencia piloto que se realizó en 5 programas no escolarizados de Educación Inicial de sectores urbano marginales de Lima y Callao, permitió validar un modelo de capacitación que tiene principios y estrategias muy particulares y cuyos resultados están relacionados con el mejoramiento de la calidad de servicios educativos, el desempeño de animadoras y la participación de la comunidad, lo cual ha propiciado su extensión a otros sectores y niveles.

Dispositivo de posicionamiento de muestras biológicas para su irradiación en un canal radial de un reactor nuclear // Biological samples positioning device for irradiations on a radial channel at the nuclear research reactor

Directory of Open Access Journals (Sweden)

Maritza Rodríguez - Gual

2010-05-01

Full Text Available ResumenPor la demanda de un dispositivo experimental para el posicionamiento de las muestras biológicaspara su irradiación en un canal radial de un reactor nuclear de investigaciones en funcionamiento, seconstruyó y se puso en marcha un dispositivo para la colocación y retirada de las muestras en laposición de irradiación de dicho canal. Se efectuaron las valoraciones económicas comparando conotro tipo de dispositivo con las mismas funciones. Este trabajo formó parte de un proyectointernacional entre Cuba y Brasil que abarcó el estudio de los daños inducidos por diferentes tipos deradiación ionizante en moléculas de ADN. La solución propuesta es comprobada experimentalmente,lo que demuestra la validez práctica del dispositivo. Como resultado del trabajo, el dispositivoexperimental para la irradiación de las muestras biológicas se encuentra instalado y funcionando yapor 5 años en el canal radial # 3(BH#3 Palabras claves: reactor nuclear de investigaciones, dispositivo para posicionamiento de muestras,___________________________________________________________________________AbstractFor the demand of an experimental device for biological samples positioning system for irradiationson a radial channel at the nuclear research reactor in operation was constructed and started up adevice for the place and remove of the biological samples from the irradiation channels withoutinterrupting the operation of the reactor. The economical valuations are effected comparing withanother type of device with the same functions. This work formed part of an international projectbetween Cuba and Brazil that undertook the study of the induced damages by various types ofionizing radiation in DNA molecules. Was experimentally tested the proposed solution, whichdemonstrates the practical validity of the device. As a result of the work, the experimental device forbiological samples irradiations are installed and operating in the radial beam hole #3(BH#3

Papers of the Third Annual Congress of the Mexican Nuclear Society, C.A

International Nuclear Information System (INIS)

1992-11-01

Once again the Sociedad Nuclear Mexicana fulfill its annual Congress being this time the installations of the Instituto de Investigaciones Electricas the place for the event with a collection of forty documents in the following areas: modelling of nuclear systems, expert systems, dosimetry, experimentation and fuel cycle among others. This significant number of papers is a sample of the great interest of the nuclear community in the participation in this forum presenting its more recent works. The participants belongs to the main institutions in the country dedicated to the technological development of the nuclear area in its different branches. Our best wishes are that this event allows not only the exchange of ideas and the knowledge of the type of works that other colleagues are developing, but also to present the opportunity to live together in a pleasant environment where the main ingredient be the surmounting spirit. We welcome all the participants to the Third Congress of our Society. (Author)

Determination of the zero in the Two theta angle and the wavelength in the neutron diffractometer for the Cyber computer of the ININ and for the IBM compatible microcomputers; Determinacion del cero en el angulo Dos teta y la longitud de onda en el difractometro de neutrones para la computadora Cyber del ININ y para microcomputadoras compatibles con IBM

Energy Technology Data Exchange (ETDEWEB)

Macias B, L R

1991-05-15

The objective of this work consists on determining the calibration in the angular parameters and the neutron wavelength used in the neutron diffractometer of the TRIGA Mark III reactor, through some readings in that a well-known sample is used by means of a Fortran computer program that is used in the CYBER computer of the ININ in Mexico, and/or in micro computers compatible with IBM. The program was also designed to determine the zero of the 2 {theta} angle of the goniometer of the diffractometer. The generated data were proven by means of well-known data of the Powder Diffraction File of the Joint Committee on Powder Diffraction Standards (JCPDS). (Author)

LA INVESTIGACION COMO CONTENIDO, METODO, ENFOQUE Y CONTEXTO EN LA FORMACIÓN DE LOS PROFESIONALES EN LA UNIVERSIDAD CONTEMPORANEA.

Directory of Open Access Journals (Sweden)

Alina Martínez

2016-04-01

La universidad, tiene un papel fundamental en el proceso respectivo y potencia las competencias de sus educandos, y entre las funciones principales la creacion de cultura a partir de los procesos de investigacion que en ella se genera y, consecuentemente, participa de manera activa en la solucion de los problemas del entorno, lo que tambien constituye su encargo social; siendo este fundamental en el proceso y la prioridad en la formacion para la investigacion de los estudiantes y al desarrollo de habilidades formativas como parte de sus competencias profesionales, ademas de la autopreparacion y cpacitacion permanente del docente vínculo clave en los procesos de desarrollo. La capacidad laboral mediad a través de las competencias, que el educando recibe en su proceso de formacion, es la búsqueda de los elementos necesarios que constituyen habilidades, destrezas, comportamientos debidamente organizados a fin de lograr metas y objetivos concretos, estos deben ser medidos y cualificados con eficacia, dentro de los niveles de rendimiento exigidos en el trabajo; se logra con la adquisicion y desarrollo de conocimientos, expresados en el desempeño a través de la integracion del saber, el saber hacer y saber ser.

Development of an analytical model for the determination of {sup 60}Co in aqueous samples by atomic absorption and gamma spectrometry techniques; Elaboracion de un modelo analitico para la determinacion de {sup 60}Co en muestras acuosas mediante tecnicas de absorcion atomica y espectrometria gamma

Energy Technology Data Exchange (ETDEWEB)

Solis A, N. A.

2015-07-01

The applications of the nuclear energy in industry and medicine generate radioactive wastes that must be isolated and confined in order to limit its spread in the biosphere. These types of wastes are generated in hospitals, industry, research centers and nuclear power plants (during de fuel cycle). The radioactive elements (radionuclides) cannot be destroyed by any known method, either chemical or mechanical. Its final destruction is produced by radioactive decay, which makes them stable isotopes, or nuclear transmutation being bombarded with atomic particles. Consequently, the radioactive waste management is to control the radioactive discharges and reduce to tolerable limits, eliminating of effluents and wastes the radionuclides of interest, concentrating them so they can be stored or evacuated so that later not appear in dangerous concentration in the biosphere. In Mexico, the main generators of radioactive wastes are the nuclear power plant of Laguna Verde in Veracruz, Hospitals of the public and private sector, in addition Instituto Nacional de Investigaciones Nucleares (ININ) some institutes and facilities of the UNAM and Instituto Politecnico Nacional (IPN) and industries among others. The aqueous radioactive wastes, particularly those from the nuclear power plants contain traces of cobalt-60. Currently there is no model or analytical technique for the separation of this radionuclide, so it became necessary to develop an analytical model for separation and facilitate their disposal. In this paper was shown that atomic absorption and gamma spectrometry techniques can separate the active concentration of the inactive, which is important because the total concentration can be associated through direct relationships with the wear of metal parts of the nuclear reactor, since the metal alloys of the same reactor containing a fraction of cobalt. Also this analytical and mathematical model that can be reproducible and applicable to full sets of samples and that this

Development of an analytical model for the determination of 60Co in aqueous samples by atomic absorption and gamma spectrometry techniques

International Nuclear Information System (INIS)

Solis A, N. A.

2015-01-01

The applications of the nuclear energy in industry and medicine generate radioactive wastes that must be isolated and confined in order to limit its spread in the biosphere. These types of wastes are generated in hospitals, industry, research centers and nuclear power plants (during de fuel cycle). The radioactive elements (radionuclides) cannot be destroyed by any known method, either chemical or mechanical. Its final destruction is produced by radioactive decay, which makes them stable isotopes, or nuclear transmutation being bombarded with atomic particles. Consequently, the radioactive waste management is to control the radioactive discharges and reduce to tolerable limits, eliminating of effluents and wastes the radionuclides of interest, concentrating them so they can be stored or evacuated so that later not appear in dangerous concentration in the biosphere. In Mexico, the main generators of radioactive wastes are the nuclear power plant of Laguna Verde in Veracruz, Hospitals of the public and private sector, in addition Instituto Nacional de Investigaciones Nucleares (ININ) some institutes and facilities of the UNAM and Instituto Politecnico Nacional (IPN) and industries among others. The aqueous radioactive wastes, particularly those from the nuclear power plants contain traces of cobalt-60. Currently there is no model or analytical technique for the separation of this radionuclide, so it became necessary to develop an analytical model for separation and facilitate their disposal. In this paper was shown that atomic absorption and gamma spectrometry techniques can separate the active concentration of the inactive, which is important because the total concentration can be associated through direct relationships with the wear of metal parts of the nuclear reactor, since the metal alloys of the same reactor containing a fraction of cobalt. Also this analytical and mathematical model that can be reproducible and applicable to full sets of samples and that this

Trasmar: automated vehicle for transport of radioactive materials

International Nuclear Information System (INIS)

Segovia R, J.A.; Martinez J, L.

2001-01-01

Traditionally robots have been used for industrial applications, even though area in which these devices had a deep impact is in the nuclear industry. The ININ is an Institute that must to manage and to work with radioactive substances. The ININ is also responsible of the storage and supervision of radioactive wastes in the country, therefore the applications of the automated systems in the Institute have as the main objective to reduce the exposure and the contact of personnel with the radioactive material. Here to, it has been proposed the project called Assisted Transportation of Radioactive Material (TRASMAR). (Author)

‘Copiar y pegar’ en investigaciones en el pregrado: haciendo mal uso del Internet

Directory of Open Access Journals (Sweden)

Charles Huamaní

2008-06-01

Full Text Available Introducción: La ética en el proceso de investigación es un tema poco abordado durante el pregrado, por lo que debe ser analizada para prevenir infracciones que podrían afectar el desarrollo de todo investigador en formación. Objetivo: Determinar las características de copia en los trabajos de investigación realizados durante el pregrado, por estudiantes de Medicina Humana de segundo año. Diseño: Estudio observacional retrospectivo. Lugar: Facultad de Medicina, Universidad Nacional Mayor de San Marcos. Población: la sección de la ‘introducción’ de trabajos de investigación realizados el año 2004 en un curso curricular. Intervenciones: se revisó manualmente las oraciones de la ‘introducción’ de los trabajos, se describen el tipo de copia, el número de trabajos, autores, asesores, párrafos copiados, y el tipo de fuentes de información y de copia. Principales medidas de resultados: frecuencias y porcentajes de oraciones copiadas y tipo de copia. Resultados: Se revisó un total de 24 trabajos de investigación, con un promedio de 6 autores y 2 asesores por trabajo, 23 tenían alguna evidencia de copia electrónica, 8 sólo tenían copia literal; del total de oraciones evaluadas, el 64% corresponde a copia total de oraciones; sólo el 30% de las fuentes copiadas eran publicaciones científicas en línea, el resto son fuentes de acceso público no especializadas. Conclusiones: se describe una alta frecuencia de copia en investigaciones durante el pregrado provenientes de fuentes electrónicas, por lo que es necesario prevenir que se repita en futuras investigaciones al implementar sistemas de búsqueda sistemática de plagio.

Improvement of the obtention process of phosphorus-32 of the ININ through the application of nuclear analytical techniques

International Nuclear Information System (INIS)

Zepeda R, C.P.

2007-01-01

The phosphorus-32, is radioisotope emitting pure β - , of maximum energy 1.71 MeV with an average life of 14.28 days, and that has application in the industry, agriculture, medicine and biology. The 32 P, produced by means of two nuclear reactions 32 S(n,p) 32 P and 31 P (n,γ) 32 P; by the facility of handling of sulfur, his low cost and its fast acquisition in the market. I selected the reaction 32 S(n,p) 32 P. To produce 32 P it is necessary to prepare and to characterize the target (S-α) that is obtained from the purification of the raw material, make the mathematical calculations of irradiation, irradiation of the target in the nuclear reactor TRIGA Mark III, radiochemical separation of 32 P of 32 S by a dry distillation method and an hydrolysis of 32 P with diluted HCl obtaining H 3 32 PO 4 and finally quality control. In the order to make the radiochemistry separation it was necessary to make previous modifications to the process guarantee the quality of product ( 32 P), and security of the operator. (Author)

Nuclear reactions with radioactive and stable beams (Part II)

International Nuclear Information System (INIS)

Aguilera R, E.F.; Martinez Q, E.; Gomez C, A.; Lizcano, D.

2005-12-01

At the present time there is a great interest at world level in experiments, with accelerated nuclei of short half life. The dispersion, fusion, transfer and break processes in the interaction of weakly light projectiles bounded with targets of Z great its have been object of intense recent investigation, at world level. Our group, in collaboration with the University of Notre Dame, it has measured and analyzed these processes for weakly bound systems as: 6 He + 209 Bi, 8 Li + 208 Pb, 10 Be + 208 Pb. On the other hand a research line that has wakened up great interest, it is that of studies of resonant reactions using the Inverse Kinematics technique with thick targets. The use of this technique allows to measure an entire excitation function with a single bombardment. Our group has carried out, in the ININ, preliminary bombardments for the system 12 C + 4 He. This allowed to establish the feasibility of implementing this technique in our Laboratory. The application of this and other techniques to different systems like 18 O + 4 He, 12 C + 12 C, 12 C + 16 O, 16 O + 16 O, it opens the possibility to measure the fusion of these systems at very low energy and to deepen in the knowledge of the nuclear structure and the nuclear astrophysics. In this technical report, the activities carried out by our group during the second stage of this project, considered for 2005 are described. Also in that year, our group carries out a research stay in the University of Notre Dame, during this stay, the angular distribution of the projectiles of 8 B dispersed in an enriched target of 58 Ni was measured. The same as in the previous experiments, in this occasion it was also possible to measure those angular distributions of the projectiles of 7 Be and 6 Li dispersed in this same target. In this same one our stay group participates in other three experiments proposed by collaborators of other institutions (University of Notre Dame, University of Sao Paulo), where the products of the

Development of a lyophilized formulation for the preparation of radiopharmaceutical 68Ga-DOTA-E-[c(RGDfK)]2 for the diagnosis of breast cancer tumors

International Nuclear Information System (INIS)

Terron A, E. J.

2015-01-01

Radiopharmaceuticals of third generation by its design that includes peptides capable of selectively directing the radiation to a specific molecular target are useful in molecular medicine for obtaining molecular images that allow recording in vivo phenomena temporal-space of molecular or cellular processes, with diagnostic or therapeutic applications. Generally, peptides that recognize cellular receptors that are over-expressed in cancer cells of interest are used; such is the case of RGD (arginine-glycine-aspartic acid) a tri-peptide sequence which recognizes to the membrane receptors α(v)β(3) and α(v)β(5) that are involved in metastasis and angiogenic processes as well as in tumor cells of breast glioma. The high affinity and selectivity of RGD peptide with integrin s α(v)β(3) and α(v)β(5) is the basis for designing radiopharmaceuticals for diagnostic of breast cancer and the metastasis and angiogenic processes. In this paper a useful lyophilized formulation was development for obtaining 68 Ga-DOTA-E-[c(RGDfK)] 2 radiopharmaceutical that for its effectiveness, stability and security can be used in humans. The production process of core-equipment DOTA-E-[c(RGDfK] 2 /Buffer sodium acetate 1.0 M was optimized, and the formulation was transferred to the radiopharmaceuticals production plant of the Instituto Nacional de Investigaciones Nucleares (ININ). The optimized formulation of the core-equipment for the 68 Ga-DOTA-E-[c(RGDfK)] 2 radiopharmaceutical preparation is: DOTA-E-[c(RGDfK)] 2 peptide - 75 μg; Mannitol - 50 mg; Sodium acetate - 14 mg; Sodium acetate buffer 1.0 M ph 4.3 - 0.5 m L. The production process was validated and stability studies were carried out to the validation batches in compliance with the validation master plan of the ININ and in adherence to compliance of the applicable national and international regulations. Also the legal dossier was drawn up in order to make the application of sanitary registration before Comision Federal para

Development of a lyophilized formulation for the preparation of radiopharmaceutical {sup 68}Ga-DOTA-E-[c(RGDfK)]{sub 2} for the diagnosis of breast cancer tumors; Desarrollo de una formulacion liofilizada para la preparacion del radiofarmaco {sup 68}Ga-DOTA-E-[c(RGDfK)]{sub 2} para el diagnostico de tumores de cancer de mama

Energy Technology Data Exchange (ETDEWEB)

Terron A, E. J.

2015-07-01

Radiopharmaceuticals of third generation by its design that includes peptides capable of selectively directing the radiation to a specific molecular target are useful in molecular medicine for obtaining molecular images that allow recording in vivo phenomena temporal-space of molecular or cellular processes, with diagnostic or therapeutic applications. Generally, peptides that recognize cellular receptors that are over-expressed in cancer cells of interest are used; such is the case of RGD (arginine-glycine-aspartic acid) a tri-peptide sequence which recognizes to the membrane receptors α(v)β(3) and α(v)β(5) that are involved in metastasis and angiogenic processes as well as in tumor cells of breast glioma. The high affinity and selectivity of RGD peptide with integrin s α(v)β(3) and α(v)β(5) is the basis for designing radiopharmaceuticals for diagnostic of breast cancer and the metastasis and angiogenic processes. In this paper a useful lyophilized formulation was development for obtaining {sup 68}Ga-DOTA-E-[c(RGDfK)]{sub 2} radiopharmaceutical that for its effectiveness, stability and security can be used in humans. The production process of core-equipment DOTA-E-[c(RGDfK]{sub 2}/Buffer sodium acetate 1.0 M was optimized, and the formulation was transferred to the radiopharmaceuticals production plant of the Instituto Nacional de Investigaciones Nucleares (ININ). The optimized formulation of the core-equipment for the {sup 68}Ga-DOTA-E-[c(RGDfK)]{sub 2} radiopharmaceutical preparation is: DOTA-E-[c(RGDfK)]{sub 2} peptide - 75 μg; Mannitol - 50 mg; Sodium acetate - 14 mg; Sodium acetate buffer 1.0 M ph 4.3 - 0.5 m L. The production process was validated and stability studies were carried out to the validation batches in compliance with the validation master plan of the ININ and in adherence to compliance of the applicable national and international regulations. Also the legal dossier was drawn up in order to make the application of sanitary registration

Nuclear reactions with radioactive and stable beams (Part II); Reacciones nucleares con haces radiactivos y estables (Parte II)

Energy Technology Data Exchange (ETDEWEB)

Aguilera R, E.F.; Martinez Q, E.; Gomez C, A.; Lizcano, D. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2005-12-15

At the present time there is a great interest at world level in experiments, with accelerated nuclei of short half life. The dispersion, fusion, transfer and break processes in the interaction of weakly light projectiles bounded with targets of Z great its have been object of intense recent investigation, at world level. Our group, in collaboration with the University of Notre Dame, it has measured and analyzed these processes for weakly bound systems as: {sup 6}He + {sup 209}Bi, {sup 8}Li + {sup 208}Pb, {sup 10}Be + {sup 208}Pb. On the other hand a research line that has wakened up great interest, it is that of studies of resonant reactions using the Inverse Kinematics technique with thick targets. The use of this technique allows to measure an entire excitation function with a single bombardment. Our group has carried out, in the ININ, preliminary bombardments for the system {sup 12}C + {sup 4}He. This allowed to establish the feasibility of implementing this technique in our Laboratory. The application of this and other techniques to different systems like {sup 18}O + {sup 4}He, {sup 12}C + {sup 12}C, {sup 12}C + {sup 16}O, {sup 16}O + {sup 16}O, it opens the possibility to measure the fusion of these systems at very low energy and to deepen in the knowledge of the nuclear structure and the nuclear astrophysics. In this technical report, the activities carried out by our group during the second stage of this project, considered for 2005 are described. Also in that year, our group carries out a research stay in the University of Notre Dame, during this stay, the angular distribution of the projectiles of {sup 8}B dispersed in an enriched target of {sup 58}Ni was measured. The same as in the previous experiments, in this occasion it was also possible to measure those angular distributions of the projectiles of {sup 7}Be and {sup 6}Li dispersed in this same target. In this same one our stay group participates in other three experiments proposed by collaborators of

Recomendaciones en el diseño, la ejecución y la publicación de investigaciones en Psicología y ciencias del comportamiento

Directory of Open Access Journals (Sweden)

César A. Acevedo-Triana

2015-04-01

Full Text Available Las prácticas inadecuadas en la investigación han repercutido en el estatus científico del conocimiento en Psicología y ciencias del comportamiento en general. Este artículo tiene como propósito mostrar algunos mecanismos que podrían ayudar a mejorar el proceso de investigación y la práctica profesional. El artículo se divide en tres secciones: primero, presentamos la Psicología como disciplina científica diferente a la pseudociencia con el fin de examinar y sugerir acciones para mantener este principio científico; segundo, se sugieren algunas recomendaciones en torno a la ejecución de las investigaciones y el proceso necesario de replicación y, tercero, proponemos el proceso de publicación de las investigaciones como mecanismo de autocorrección metodológica y teórica. A modo general, existe una discusión constante, que más allá de realizar cuestionamientos epistemológicos, se refiere a una revisión profunda de principios y prácticas que sustentan los hallazgos derivados de las investigaciones; además, la visión de integración de herramientas tecnológicas superan barreras de acceso al consumo, producción y difusión del conocimiento.

Eriyik Tuz Reaktörlerinde Yakıt Malzemesi Olarak Kullanılan Na Çekirdeğinin Üretim Tesir Kesiti Hesaplamaları

Directory of Open Access Journals (Sweden)

S. Sedat DOĞAN

2014-12-01

Full Text Available Özet: Bu çalışmada, eriyik tuz reaktörlerinde yakıt malzemesi olarak kullanılan Na çekirdeğinin üretim tesir kesitleri hesaplanmıştır. Hesaplamalar; 24Mg(p,α21Na, 23Na(n,γ24Na, 24Mg(n,p24Na, 20Ne(d,n21Na ve 23Na(n,2n22Na reaksiyonları için 70 MeV parçacık gelme enerjisine kadar denge ve denge–öncesi nükleer reaksiyon modelleri kullanılarak gerçekleştirilmiştir. Denge–öncesi hesaplamalar için; Full Exciton Model, Hibrit Model, Geometri Bağımlı Hibrit Model ve Cascade Exciton Model, denge hesaplamaları için ise; Weisskopf–Ewing Model kullanılmıştır. Elde edilen sonuçlar, Deneysel Nükleer Reaksiyon Data (EXFOR Kütüphanesi'nden alınan deneysel değerlerle karşılaştırılmıştır. Ayrıca; 21,22,24Na üretimi için optimum enerji aralıkları belirlenmiştir. Anahtar kelimeler: Eriyik tuz reaktörleri, reaksiyon tesir kesiti, EXFOR, denge ve denge–öncesi reaksiyonlar, nükleer reaksiyonlar modelleri Production Cross Section Calculations of Na Nucleus Used as Fuel Material in Molten Salt Reactors Abstract: In this study, the production cross sections of Na nucleus used as fuel material in molten salt reactors have been calculated. The calculations for 24Mg(p,α21Na, 23Na(n,γ24Na, 24Mg(n,p24Na, 20Ne(d,n21Na and 23Na(n,2n22Na reactions have been carried out up to 70 MeV incident particle energies by using the equilibrium and pre–equilibrium nuclear reaction models. Full Exciton Model, Hybrid Model, Geometry Dependent Hybrid Model and Cascade Exciton Model for the pre–equilibrium reactions and Weisskopf–Ewing Model for the equilibrium reactions have been used. The calculated results have been compared with experimental data taken from the Experimental Nuclear Reaction Data (EXFOR library. Also, the optimum energy ranges for 21,22,24Na production have been determined. Key words: Molten salt reactor, reaction cross section, EXFOR, equilibrium and pre–equilibrium reactions, nuclear

Temporal variations in elemental concentrations of atmospheric aerosols in Mexico City

International Nuclear Information System (INIS)

Aldape U, F.

1992-05-01

Measurements are reported of elemental concentrations of airborne particulates in Mexico City and their time variation over a one-week period in the spring of 1988. Proton-induced X-ray emission analysis, PIXE, was used to analyse the atmospheric aerosols which were bombarded with 2.5 MeV protons from the 12 MV Tandem Van de Graaff accelerator at the National Institute of Nuclear Research, ININ. Variations in the elemental concentrations were observed over the time period studied. An intercomparison was made in the case of the element lead with PIXE results obtained at the Crocker Nuclear Laboratory, CNL, University of California for the same set of samples. Excellent agreement was obtained both for the time variation of the relative concentration and the absolute lead concentrations. These results give added confidence to the protocol adopted at ININ. (Author)

1993 Annual Report ININ; Informe Anual 1993 ININ. Direccion de Servicios Tecnologicos

Energy Technology Data Exchange (ETDEWEB)

Technological Services Division [Instituto Nacional de Investigaciones Nucleares, Mexico City (Mexico)

1994-12-31

The Direction of Technical Services and the Control Unit of Technological Services worked in two complementary directions. One of them to follow the operating programs of the manager`s offices (Managership), taking care of the observance of the scheduled commitments, In the other direction, the general direction through the technical secretary were supported, to accomplish the scheduled requirements in routine reports. Special attention were given to the next aspects: (a) The high quality of the services given to Laguna Verde Nuclear Power Plant. (b) The commercial irradiation services were improved. (c) Resolution to the problems of two important projects: (1) Molybdenum 99 Project. (2) Remodeling of the old facilities of the radioisotopes production plant. In the case of Molybdenum 99 Project, financial adjustment with CONACYT was scheduled, and the works for the design and construction of the basement for Hot Cells, as well as the cells, were started. The works for the basement should be start in September 1994 and in the same date, the International bid for the Hot Cells should be made. In the case of remodeling, a work plan consisting in the design of the future utilities was made. The Hot Cells and the complementary systems as ventilation and extraction will be improved with the addition of the filtering elements necessary for a safe operation. The works will start in 1994 and for this time the old facilities should be dismantled.

Análisis epistemológico de las investigaciones en comunicación de masas

Directory of Open Access Journals (Sweden)

Brenda Di Paolo

2010-03-01

Full Text Available La comunicación, más que otras ciencias, ha llevado la inter-disciplinaridad para el desarrollo de su campo. A lo largo de un recorrido por la historia de las investigaciones en comunicación de masas y del análisis de las distintas teorías que aportaron al campo de ésta, se concluye que son mayores los interrogantes y las problemáticas puestas en debate que las soluciones y certezas arribadas, sin embargo sobresale la necesidad de llegar a criterios o consensos epistemológicos firmes para la investigación en comunicación.

Dinámicas de la actividad científica del Instituto de Investigaciones Socio-Económicas de la Universidad Nacional de San Juan de Argentina

Directory of Open Access Journals (Sweden)

Gonzalo Miguel Castillo

2018-02-01

Full Text Available Este artículo fue un estudio de caso en torno a las capacidades de investigación generadas en el Instituto de Investigaciones Socio-Económicas de la Facultad de Ciencias Sociales, perteneciente a la Universidad Nacional de San Juan, en Argentina. Aborda los principales acontecimientos históricos de la institución y su dinámica actual, tuvo en cuenta las áreas de conocimiento en las cuales se desarrollan sus investigaciones. A su vez, este trabajo ha descrito las dinámicas de la revista académica producida en este instituto, denominada REVIISE. La metodología fue un abordaje objetivo/descriptivo. Se procedió a analizar el papel, devenir y accionar del IISE y las modalidades de proyectos de investigación ejecutados. Fueron indagados el funcionamiento de la REVIISE, identificando perfiles académicos de sus autores, circuitos de difusión y redes académicas; y la conformación de comités y consejos editoriales y académicos que componen esta publicación. Se propone realizar un recorrido que atraviesa lo institucional, los agentes académicos y la principal red de difusión de la producción de conocimiento para comprender las capacidades investigativas del Instituto de Investigaciones Socio Económicas.

Consentimiento informado en investigaciones psicológicas con niños: antecedentes y normas éticas

OpenAIRE

Borzi, Sonia Lilian; Peralta, Luciano Oscar; Yacuzzi, Luciana; Cabra, Martina

2014-01-01

Este trabajo se realiza en el marco del proyecto “La investigación con niños en Psicología del Desarrollo: dimensión ético-deontológica y sus implicancias en la responsabilidad del psicólogo”, uno de cuyos objetivos es analizar la especificidad del consentimiento informado en investigaciones con niños. Comenzamos con un recorrido histórico sobre los principales antecedentes del mismo, en donde el niño no era considerado en su particularidad. El cambio de concepción hacia los niños y adolescen...

Power supply controlled for plasma torch generation

International Nuclear Information System (INIS)

Diaz Z, S.

1996-01-01

The high density of energy furnished by thermal plasma is profited in a wide range of applications, such as those related with welding fusion, spray coating and at the present in waste destruction. The waste destruction by plasma is a very attractive process because the remaining products are formed by inert glassy grains and non-toxic gases. The main characteristics of thermal plasmas are presented in this work. Techniques based on power electronics are utilized to achieve a good performance in thermal plasma generation. This work shown the design and construction of three phase control system for electric supply of thermal plasma torch, with 250 kw of capacity, as a part of the project named 'Destruction of hazard wastes by thermal plasma' actually working in the Instituto Nacional de Investigaciones Nucleares (ININ). The characteristics of thermal plasma and its generation are treated in the first chapter. The A C controllers by thyristors applied in three phase arrays are described in the chapter II, talking into account the power transformer, rectifiers bank and aliasing coil. The chapter III is dedicated in the design of the trigger module which controls the plasma current by varying the trigger angle of the SCR's; the protection and isolating unit are also presented in this chapter. The results and conclusions are discussed in chapter IV. (Author)

Power supply controlled for plasma torch generation; Fuente de alimentacion controlada para la generacion de un plasma

Energy Technology Data Exchange (ETDEWEB)

Diaz Z, S

1997-12-31

The high density of energy furnished by thermal plasma is profited in a wide range of applications, such as those related with welding fusion, spray coating and at the present in waste destruction. The waste destruction by plasma is a very attractive process because the remaining products are formed by inert glassy grains and non-toxic gases. The main characteristics of thermal plasmas are presented in this work. Techniques based on power electronics are utilized to achieve a good performance in thermal plasma generation. This work shown the design and construction of three phase control system for electric supply of thermal plasma torch, with 250 kw of capacity, as a part of the project named `Destruction of hazard wastes by thermal plasma` actually working in the Instituto Nacional de Investigaciones Nucleares (ININ). The characteristics of thermal plasma and its generation are treated in the first chapter. The A C controllers by thyristors applied in three phase arrays are described in the chapter II, talking into account the power transformer, rectifiers bank and aliasing coil. The chapter III is dedicated in the design of the trigger module which controls the plasma current by varying the trigger angle of the SCR`s; the protection and isolating unit are also presented in this chapter. The results and conclusions are discussed in chapter IV. (Author).

Kınalı Keklik (Alectoris chukar) Lens’inin Işık Mikroskopik Düzeyde Araştırılması

OpenAIRE

KULOĞLU, Hatice Yaren

2016-01-01

Bu çalışmada kınalı keklik (Alectoris chukar) lens’inin ışık mikroskobik düzeyde araştırılması amaçlandı. Çalışma materyali olarak 6 adet kınalı keklik göz lens’leri kullanıldı. Lens’in; lens kapsülü, subkapsüler epitel ve lens cismi olmak üzere üç tabakadan oluştuğu belirlendi. Lens kapsülünün, lensi dıştan sardığı ve ön yüzde biraz kalınlaşmış olduğu gözlendi. Subkapsüler epitelde sadece lens’in ön yüzünde tek sıra halinde kübik epitel hücreleri vardı. Lens cisminin başlıca lens fibrillerin...

TRASMAR 2: improved tele operated mobile robot for the radioactive material transport; TRASMAR 2: Robot movil teleoperado mejorado para el transporte de material radiactivo

Energy Technology Data Exchange (ETDEWEB)

Segovia de los Rios, A. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico); Zamora S, C.A.; Garduno G, M. [Instituto Tecnologico de Toluca, 52140 Metepec, Estado de Mexico (Mexico)]. e-mail: asegovia@nuclear.inin.mx

2007-07-01

In the National Institute of Nuclear Research of Mexico (ININ), a new robot version for the radioactive material transport was developed trying to diminish the radiation quantity to which the ININ personnel is exposed taking it away by this way of the radioactive substance. The robot is operated by means of a remote control, for that which two data transmission modules by radiofrequency are used. As much the remote control as the vehicle control system were implemented with the help of micro controllers. Presently document the main characteristics of this mobile robot are explained, which is a more economic and functional version that it predecessor. (Author)

TRASMAR 2: improved tele operated mobile robot for the radioactive material transport

International Nuclear Information System (INIS)

Segovia de los Rios, A.; Zamora S, C.A.; Garduno G, M.

2007-01-01

In the National Institute of Nuclear Research of Mexico (ININ), a new robot version for the radioactive material transport was developed trying to diminish the radiation quantity to which the ININ personnel is exposed taking it away by this way of the radioactive substance. The robot is operated by means of a remote control, for that which two data transmission modules by radiofrequency are used. As much the remote control as the vehicle control system were implemented with the help of micro controllers. Presently document the main characteristics of this mobile robot are explained, which is a more economic and functional version that it predecessor. (Author)

Advance: research project on aging electrical wiring in nuclear power plants; Advance: proyecto de investigacion de envejecimiento en cableado electrico en centrales nucleares

Energy Technology Data Exchange (ETDEWEB)

Cano, J. C.; Ruiz, S.

2013-07-01

As Nuclear Power Plants get older it is more important to know the real condition of low voltage, instrumentation, power and control cables. Additionally, as new plants are being built, the election of cables and the use of in-situ monitoring techniques to get reliable aging indicators, can be very useful during the plant life. The goal of this Project is to adapt, optimize and asses Condition Monitoring techniques for Nuclear Power Plants cables. These techniques, together with the appropriate acceptance criteria, would allow specialists to know the state of the cable over its entire length and estimate its residual life. In the Project, accelerated ageing is used in cables installed in European NPPs in order to evaluate different techniques to detect local and global ageing. Results are compared with accepted tests to validate its use for the estimation of cables residual life. This paper describes the main stages of the Project and some results. (Author)

1993 Annual Report ININ

International Nuclear Information System (INIS)

Technological Services Division

1994-01-01

The Direction of Technical Services and the Control Unit of Technological Services worked in two complementary directions. One of them to follow the operating programs of the manager's offices (Managership), taking care of the observance of the scheduled commitments, In the other direction, the general direction through the technical secretary were supported, to accomplish the scheduled requirements in routine reports. Special attention were given to the next aspects: a) The high quality of the services given to Laguna Verde Nuclear Power Plant. b) The commercial irradiation services were improved. c) Resolution to the problems of two important projects: 1) Molybdenum 99 Project. 2) Remodeling of the old facilities of the radioisotopes production plant. In the case of Molybdenum 99 Project, financial adjustment with CONACYT was scheduled, and the works for the design and construction of the basement for Hot Cells, as well as the cells, were started. The works for the basement should be start in September 1994 and in the same date, the International bid for the Hot Cells should be made. In the case of remodeling, a work plan consisting in the design of the future utilities was made. The Hot Cells and the complementary systems as ventilation and extraction will be improved with the addition of the filtering elements necessary for a safe operation. The works will start in 1994 and for this time the old facilities should be dismantled

Applied research in the ININ, solutions to challenges traced by the National Development Program; Investigacion aplicada en el ININ, soluciones a retos planteados por el programa Nacional de Desarrollo

Energy Technology Data Exchange (ETDEWEB)

Balcazar, M

1991-05-15

The National Program of Development 1991-1994 and the necessities expressed by the society as regards Energy, Ecology, Feeding, Industry and Health, they outline problems of inevitable solution. This articulates it presents the contribution to the solution of some of these problems that the investigators associated to the Management of Applied Investigation of the Inn provide by means of specific projects. (Author)

Análisis, diagnóstico y perspectivas de la investigacion psicoeducacional en el Perú

Directory of Open Access Journals (Sweden)

Carmen Lazarte Torriani

1991-06-01

Full Text Available El artículo sistematiza la investigación realizada por la Psicología Educacional Peruana. Se revisan tesis, algunas memorias, resúmenes e informes de investigación y de congresos, catálogos, diagnósticos educacionales, revisiones publicadas, artículos de revistas y algunos libros. Se describen las etapas de la investigación psicoeducacional y se caracterizan investigaciones de tesis, de publicaciones y de INIDE en base a una serie de criterios. Finalmente, se arriba a un diagnóstico de la investigación psicoeducacional en el Perú y se trazan sus perspectivas.

INCIDENCIA DE LA INVESTIGACION FORMATIVA EN LOS HORIZONTES EPISTEMOLÓGICOS DE LA CONTABILIDAD

Directory of Open Access Journals (Sweden)

Juan C Carriel

2016-04-01

Full Text Available El propósito de la investigacion es determinar el uso de la investigacion formativa en el horizonte epistemológico de la contabilidad y analizar los micro-currículos de la carrera de Contabilidad y Auditoria en la Universidad Estatal Península de Santa Elena. Por lo que se refiere a las construccion del conocimiento contable con la teoria del positivismo pragmático, la cual hace énfasis en la objetividad de la ciencias exactas, siendo la contabilidad una ciencia social que ha absorbido este paradigma a la ecuacion contable: Activo igual a Pasivo mas Patrimonio. Sin embargo, esta teoria positivismta no ha sido la mas efectiva, a causa de las diferentes crisis financieras de las empresas: más tarde aprece la teoría crítica, afirmando que el conocimiento debe de estar al servicio de la sociedad y no a un sistema empresarial. Asimismo la teoría interpretativista hermenéutica cuyo estudio se posiciona en el sujeto y métodos cualitativos que intentan comprender y no cuantificar; y la teoría de la complejidad, con énfasis en los actores y los contextos de interaccion y significacion. Por otra parte los horizontes epistemológicos en el eje de la didáctica y pedagogia son los relacionado con la teoría del enfoque de sistemas, el aprendizaje invisible, el pensamiento complejo, la pedagogia crítica y las teorías de neuroaprendizaje. Dichas teorías están en relacion con las orientaciones facilitadas porel Consejo de Educación Superior (CES y a su vez con los docentes y estudiantes, ademas interrelacionados con los contextos, los escenarios, los conocimientos y los saberes. En definitiva la realidad es una entidad compleja y pluridimensional, asi pues el proyecto pedagógico curricular de la carrera debe fundamentar teóricamente las actuales tendencias de la ciencia de la era digital del Siglo XXI con pertinencia en la sociedad ecuatoriana y sobre todo a la interrelacion teoria-práctica de la enseñanza en la formacion de los futuror

Elma Üretiminde Pazarlama Etkinliğinin Belirlenmesi Üzerine Bir Araştırma: Isparta Senirkent İlçesi Örneği

OpenAIRE

ERDOĞAN, Esra; ADANACIOĞLU, Hakan; ORMECI KART, Murside

2016-01-01

Türkiye’nin birçok bölgesinde ekonomik anlamda yetiştiriciliği yapılan elmanın eski bir kültür bitkisi olması nedeniyle elma üretiminde pazarlama etkinliğinin belirlenmesi önem taşımaktadır. Bu çalışmada hem dolaylı hem de doğrudan pazarlama kanallarında elma üreticilerinin pazarlama  etkinlikleri karşılaştırılmalı olarak incelenmiştir. Bunun yanında çalışmada, üreticilerin pazarlama etkinliğini geliştirmek için kullanılan pazarlama stratejilerine yönelik bazı öneriler getirilmiştir. Bu çalış...

Centro de Estudios para el Desarrollo Rural Sustentable y la Soberanía Alimentaria (CEDRSSA. Estudios e investigaciones: nueva ruralidad; enfoques y propuestas para América Latina

Directory of Open Access Journals (Sweden)

Rosa Inés Babilonia Ballesteros

2014-01-01

Full Text Available Centro de Estudios para el Desarrollo Rural Sustentable y la Soberanía Alimentaria (CEDRSSA. Estudios e investigaciones:nueva ruralidad; enfoques y propuestas para América Latina.

Estado actual de las investigaciones tafonómicas naturalistas en Punta Entrada y Monte León (patagonia meridional)

OpenAIRE

Muñoz, Sebastián Ramón; Cruz, Isabel

2017-01-01

Se presentan los resultados de las investigaciones tafonómicas naturalistas realizadas desde 2005 en la desembocadura del río Santa Cruz y el parque Nacional Monte león (Patagonia Meridional) dirigidas a conocer los modos en que tiene lugar el reciclado de restos de vertebrados en un mismo contexto ambiental, la estepa costera patagónica. Se resume el conocimiento generado sobre: el tiempo involucrado en la desarticulación de carcasas de vertebrados; los procesos y actores intervinientes y ...

X-ray measurement with Pin type semiconductor detectors

International Nuclear Information System (INIS)

Ramirez J, F.J.

1999-01-01

Here are presented the experimental results of the applications of Pin type radiation detectors developed in a National Institute of Nuclear Research (ININ) project, in the measurement of low energy gamma and X-rays. The applications were oriented mainly toward the Medical Physics area. It is planned other applications which are in process of implementation inside the National Institute of Nuclear Research in Mexico. (Author)

First fuel reload in Laguna Verde; Primera recarga de combustible en Laguna Verde

Energy Technology Data Exchange (ETDEWEB)

Bahena B, D

1992-01-15

A report containing the activities carried out during the first reload of nuclear fuel and major maintenance in the Laguna Verde nuclear reactor is presented. The previous and the specific activities are included. These last are related without including the technical considerations, data or the operation details, because these data were documented inside the registrations of the CFE, the ININ and in personal way. (Author)

X-ray measurement with Pin type semiconductor detectors; Medicion de rayos X con detectores de semiconductor tipo PIN

Energy Technology Data Exchange (ETDEWEB)

Ramirez J, F.J. [Instituto Nacional de Investigaciones Nucleares, Departamento de Electronica, C.P. 52045 Salazar, Estado de Mexico (Mexico)

2000-07-01

Here are presented the experimental results of the applications of Pin type radiation detectors developed in a National Institute of Nuclear Research (ININ) project, in the measurement of low energy gamma and X-rays. The applications were oriented mainly toward the Medical Physics area. It is planned other applications which are in process of implementation inside the National Institute of Nuclear Research in Mexico. (Author)

First fuel reload in Laguna Verde

International Nuclear Information System (INIS)

Bahena B, D.

1992-01-01

A report containing the activities carried out during the first reload of nuclear fuel and major maintenance in the Laguna Verde nuclear reactor is presented. The previous and the specific activities are included. These last are related without including the technical considerations, data or the operation details, because these data were documented inside the registrations of the CFE, the ININ and in personal way. (Author)

Determination of the zero in the Two theta angle and the wavelength in the neutron diffractometer for the Cyber computer of the ININ and for the IBM compatible microcomputers

International Nuclear Information System (INIS)

Macias B, L.R.

1991-05-01

The objective of this work consists on determining the calibration in the angular parameters and the neutron wavelength used in the neutron diffractometer of the TRIGA Mark III reactor, through some readings in that a well-known sample is used by means of a Fortran computer program that is used in the CYBER computer of the ININ in Mexico, and/or in micro computers compatible with IBM. The program was also designed to determine the zero of the 2 θ angle of the goniometer of the diffractometer. The generated data were proven by means of well-known data of the Powder Diffraction File of the Joint Committee on Powder Diffraction Standards (JCPDS). (Author)

Nuclear reactions with radioactive and stable beams (Part I); Reacciones nucleares con haces radiactivos y estables (Parte I)

Energy Technology Data Exchange (ETDEWEB)

Aguilera R, E.F.; Martinez Q, E.; Gomez C, A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2004-12-15

At the present time there is a great interest at world level in experiments, with accelerated nuclei of short half life. The dispersion, fusion, transfer and break processes in the interaction of weakly light projectiles bounded with targets of Z great its have been object of intense recent investigation, at world level. Our group, in collaboration with the University of Notre Dame, it has measured and analyzed these processes for weakly bound systems as: {sup 6}He + {sup 209}Bi, {sup 8}Li + {sup 208}Pb, {sup 10}Be + {sup 208}Pb. On the other hand a research line that has wakened up great interest, it is that of studies of resonant reactions using the Inverse Kinematics technique with thick targets. The use of this technique allows to measure an entire excitation function with a single bombardment. Our group has carried out, in the ININ, preliminary bombardments for the system {sup 12}C + {sup 4}He. This allowed to establish the feasibility of implementing this technique in our Laboratory. The application of this and other techniques to different systems like {sup 18}O + {sup 4}He, {sup 12}C + {sup 12}C, {sup 12}C + {sup 16}O, {sup 16}O + {sup 16}O, it opens the possibility to measure the fusion of these systems at very low energy and to deepen in the knowledge of the nuclear structure and the nuclear astrophysics. In this technical report, the activities carried out by our group during 2004 are described.(Author)

Görme Engelli Öğrencilerin Okuma Etkinliğinde Dikkatini Sürdürme Becerileri Üzerine Kendini İzleme Tekniğinin Etkililiği

Directory of Open Access Journals (Sweden)

TÜLAY HAYTABAY Sosun

2015-12-01

Full Text Available Bu araştırmanın amacı görme yetersizliğinden etkilenmiş öğrencilerin sessiz okuma etkinliğinde dikkatini sürdürme becerileri üzerine kendini izleme tekniğinin etkililiğini incelemektir. Araştırmanın denekleri Ankara ilinde Milli Eğitim Bakanlığı’na bağlı bir Görme Engelliler İlköğretim Okulu’na devam eden, yaşları 7 ile 8 arasında değişen 3 görme engelli öğrencidir. Araştırma deneklerinden ikisi 1. sınıfa, diğeri ise 2. sınıfa gitmektedir. Öğrencilerden ikisi Braille yazı okuyan, biri ise gören yazı okuyan görme engelli öğrencilerdir. Araştırma tek denekli desenlerden çoklu yoklama deseni uygulanarak gerçekleştirilmiştir. Araştırmanın sonuçları kendini izleme tekniğinin araştırmaya katılan üç öğrencinin de dikkatini sürdürme becerilerini yüksek düzeyde artırdığını göstermiştir. Bulgular deneklerin dikkatini sürdürme becerilerinin araştırma tamamlandıktan 2 hafta sonra da sürdürdüğünü göstermiştir. Araştırmaya katılan öğretmenler kendini izleme tekniği hakkındaki görüşlerini uygulanması kolay ve etkili bir teknik olarak ifade etmişlerdir. Araştırma bulguları tartışılmış ve ileride yapılacak araştırmalara yönelik önerilere yer verilmiştir

Calidad de vida en la salud: algunas investigaciones en el ámbito hospitalario

Directory of Open Access Journals (Sweden)

Ma. Ángeles Pérez San Gregorio

2005-01-01

Full Text Available Exponemos los resultados más relevantes de dos investigaciones relacionadas con la Calidad de Vida en la Salud. En la primera de ellas, empleamos tres grupos con 32 sujetos cada uno: pacientes con Enfermedad Pulmonar Obstructiva Crónica (EPOC estabilizados, pacientes con EPOC descompensados (hospitalizados y enfermos con cáncer de pulmón (hospitalizados. Analizamos la influencia de la descompensación de la EPOC sobre la calidad de vida. En la segunda investigación, empleamos un grupo de 57 familiares de pacientes traumatizados graves que fueron evaluados en dos momentos diferentes: cuando el paciente se hallaba ingresado en la UCI y transcurridos cuatro años del alta de éste. Analizamos cómo afecta en los familiares (variables clínicas de personalidad, relaciones familiares y temor experimentado ante la muerte el tiempo transcurrido desde el ingreso del paciente en la UCI en función de su calidad de vida.

CALIDAD DE VIDA EN LA SALUD: ALGUNAS INVESTIGACIONES EN EL ÁMBITO HOSPITALARIO

Directory of Open Access Journals (Sweden)

Antonio Galán Rodríguez

2005-06-01

Full Text Available Exponemos los resultados más relevantes de dos investigaciones relacionadas con la Calidad de Vida en la Salud. En la primera de ellas, empleamos tres grupos con 32 sujetos cada uno: pacientes con Enfermedad Pulmonar Obstructiva Crónica (EPOC estabilizados, pacientes con EPOC descompensados (hospitalizados y enfermos con cáncer de pulmón (hospitalizados. Analizamos la influencia de la descompensación de la EPOC sobre la calidad de vida. En la segunda investigación, empleamos un grupo de 57 familiares de pacientes traumatizados graves que fueron evaluados en dos momentos diferentes: cuando el paciente se hallaba ingresado en la UCI y transcurridos cuatro años del alta de éste. Analizamos cómo afecta en los familiares (variables clínicas de personalidad, relaciones familiares y temor experimentado ante la muerte el tiempo transcurrido desde el ingreso del paciente en la UCI en función de su calidad de vida.

La porcelana del Buen Retiro. Investigaciones recientes

Directory of Open Access Journals (Sweden)

Mañueco Santurtún, C.

1999-08-01

Full Text Available Recent researchs have led to know new data of the construction of the Royal Porcelain Factory of Buen Retiro (Madrid, Spain. As some documents not known hitherto have revealed, the Factory was integrated by two different buildings. It was known that the building for the workrooms was raised up in 1760 –from January to May-. The economic cost traditionally atributted to this construction has resulted to be the total cost of a second building, raised in a period of five years –until August of 1765- to be occupied by the workers and their families. A second aspect studied in these pages is about the iconographic sources on which may be based some porcelain works made at the Factory.

En este trabajo se dan a conocer los resultados de investigaciones recientes sobre La Real Fábrica de Porcelana del Buen Retiro (1760-1808 que abordan dos temas. El primero, referido a la construcción de la Fábrica. Datos documentales inéditos han permitido conocer que la Manufactura del Buen Retiro fue un complejo en el que hubo dos edificaciones: de la más antigua, destinada a contener los talleres de la Fábrica, siempre se ha sabido que se construyó en cinco meses (enero, mayo 1760, aunque el costo de esta obra no coincida con el que tradicionalmente se le ha venido atribuyendo. Pero no se tenía noticia de la existencia de una segunda edificación, cuyas obras duraron cinco años y finalizaron en agosto de 1765. Este edificio estuvo destinado a albergar a los operarios de la Fábrica y su costo, muy elevado, corresponde con el que siempre se ha venido asignando a los talleres de la Fábrica. El segundo apartado se ha dedicado a mostrar las fuentes iconográficas de algunas realizaciones de porcelana de la Manufactura madrileña.

Design of a multipurpose research reactor

International Nuclear Information System (INIS)

Sanchez Rios, A.A.

1990-01-01

The availability of a research reactor is essential in any endeavor to improve the execution of a nuclear programme, since it is a very versatile tool which can make a decisive contribution to a country's scientific and technological development. Because of their design, however, many existing research reactors are poorly adapted to certain uses. In some nuclear research centres, especially in the advanced countries, changes have been made in the original designs or new research prototypes have been designed for specific purposes. These modifications have proven very costly and therefore beyond the reach of developing countries. For this reason, what the research institutes in such countries need is a single sufficiently versatile nuclear plant capable of meeting the requirements of a nuclear research programme at a reasonable cost. This is precisely what a multipurpose reactor does. The Mexican National Nuclear Research Institute (ININ) plans to design and build a multipurpose research reactor capable at the same time of being used for the development of reactor design skills and for testing nuclear materials and fuels, for radioisotopes production, for nuclear power studies and basic scientific research, for specialized training, and so on. For this design work on the ININ Multipurpose Research Reactor, collaborative relations have been established with various international organizations possessing experience in nuclear reactor design: Atomehnergoeksport of the USSR: Atomic Energy of Canada Limited (AECL); General Atomics (GA) of the USA; and Japan Atomic Energy Research Institute

Overview of some biomedical research projects in tropical medicine conducted at the Instituto Venezolano de Investigaciones Cientificas.

Science.gov (United States)

Romano, E; Cesari, I; Escalante, A; Liprandi, F; O'Daly, J A; Perez, H; Takiff, H

2000-01-01

The Instituto Venezolano de Investigaciones Cientificas (IVIC) is a government-funded multidisciplinary academic institution dedicated to research, development and technology in many areas of knowledge. Biomedical projects and publications comprise about 40% of the total at IVIC. In this article, we present an overview of some selected research and development projects conducted at IVIC which we believe contain new and important aspects related to malaria, ancylostomiasis, dengue fever, leishmaniasis and tuberculosis. Other projects considered of interest in the general area of tropical medicine are briefly described. This article was prepared as a small contribution to honor and commemorate the centenary of the Instituto Oswaldo Cruz.

Overview of some biomedical research projects in tropical medicine conducted at the Instituto Venezolano de Investigaciones Cientificas

Directory of Open Access Journals (Sweden)

Romano Egidio

2000-01-01

Full Text Available The Instituto Venezolano de Investigaciones Cientificas (IVIC is a government-funded multidisciplinary academic institution dedicated to research, development and technology in many areas of knowledge. Biomedical projects and publications comprise about 40% of the total at IVIC. In this article, we present an overview of some selected research and development projects conducted at IVIC which we believe contain new and important aspects related to malaria, ancylostomiasis, dengue fever, leishmaniasis and tuberculosis. Other projects considered of interest in the general area of tropical medicine are briefly described. This article was prepared as a small contribution to honor and commemorate the centenary of the Instituto Oswaldo Cruz.

Adaptive fuzzy control of neutron power of the TRIGA Mark III reactor; Control difuso adaptable de la potencia neutronica del reactor Triga Mark III

Energy Technology Data Exchange (ETDEWEB)

Rojas R, E.

2014-07-01

The design and implementation of an identification and control scheme of the TRIGA Mark III research nuclear reactor of the Instituto Nacional de Investigaciones Nucleares (ININ) of Mexico is presented in this thesis work. The identification of the reactor dynamics is carried out using fuzzy logic based systems, in which a learning process permits the adjustment of the membership function parameters by means of techniques based on neural networks and bio-inspired algorithms. The resulting identification system is a useful tool that allows the emulation of the reactor power behavior when different types of insertions of reactivity are applied into the core. The identification of the power can also be used for the tuning of the parameters of a control system. On the other hand, the regulation of the reactor power is carried out by means of an adaptive and stable fuzzy control scheme. The control law is derived using the input-output linearization technique, which permits the introduction of a desired power profile for the plant to follow asymptotically. This characteristic is suitable for managing the ascent of power from an initial level n{sub o} up to a predetermined final level n{sub f}. During the increase of power, a constraint related to the rate of change in power is considered by the control scheme, thus minimizing the occurrence of a safety reactor shutdown due to a low reactor period value. Furthermore, the theory of stability in the sense of Lyapunov is used to obtain a supervisory control law which maintains the power error within a tolerance region, thus guaranteeing the stability of the power of the closed loop system. (Author)

Adaptive fuzzy control of neutron power of the TRIGA Mark III reactor

International Nuclear Information System (INIS)

Rojas R, E.

2014-01-01

The design and implementation of an identification and control scheme of the TRIGA Mark III research nuclear reactor of the Instituto Nacional de Investigaciones Nucleares (ININ) of Mexico is presented in this thesis work. The identification of the reactor dynamics is carried out using fuzzy logic based systems, in which a learning process permits the adjustment of the membership function parameters by means of techniques based on neural networks and bio-inspired algorithms. The resulting identification system is a useful tool that allows the emulation of the reactor power behavior when different types of insertions of reactivity are applied into the core. The identification of the power can also be used for the tuning of the parameters of a control system. On the other hand, the regulation of the reactor power is carried out by means of an adaptive and stable fuzzy control scheme. The control law is derived using the input-output linearization technique, which permits the introduction of a desired power profile for the plant to follow asymptotically. This characteristic is suitable for managing the ascent of power from an initial level n o up to a predetermined final level n f . During the increase of power, a constraint related to the rate of change in power is considered by the control scheme, thus minimizing the occurrence of a safety reactor shutdown due to a low reactor period value. Furthermore, the theory of stability in the sense of Lyapunov is used to obtain a supervisory control law which maintains the power error within a tolerance region, thus guaranteeing the stability of the power of the closed loop system. (Author)

Nuclear reactions with radioactive and stable beams (Part I)

International Nuclear Information System (INIS)

Aguilera R, E.F.; Martinez Q, E.; Gomez C, A.

2004-12-01

At the present time there is a great interest at world level in experiments, with accelerated nuclei of short half life. The dispersion, fusion, transfer and break processes in the interaction of weakly light projectiles bounded with targets of Z great its have been object of intense recent investigation, at world level. Our group, in collaboration with the University of Notre Dame, it has measured and analyzed these processes for weakly bound systems as: 6 He + 209 Bi, 8 Li + 208 Pb, 10 Be + 208 Pb. On the other hand a research line that has wakened up great interest, it is that of studies of resonant reactions using the Inverse Kinematics technique with thick targets. The use of this technique allows to measure an entire excitation function with a single bombardment. Our group has carried out, in the ININ, preliminary bombardments for the system 12 C + 4 He. This allowed to establish the feasibility of implementing this technique in our Laboratory. The application of this and other techniques to different systems like 18 O + 4 He, 12 C + 12 C, 12 C + 16 O, 16 O + 16 O, it opens the possibility to measure the fusion of these systems at very low energy and to deepen in the knowledge of the nuclear structure and the nuclear astrophysics. In this technical report, the activities carried out by our group during 2004 are described.(Author)

Design of a costing system and valuation for the production of radiopharmaceutical FDG and the provision of radiology service with PET-CT to Caja Costarricense del Seguro Social, for the Centro de Investigacion en Ciencias Atomicas, Nucleares y Moleculares of the Universidad de Costa Rica

International Nuclear Information System (INIS)

Gonzalez Cabezas, Gabriel; Jarquin Arguedas, Daniela; Salas Solorzano, Bonnie; Solano Morales, Josue; Zuniga Soto, Karol

2013-01-01

The cost of the radiopharmaceutical FDG and of the service of diagnostic studies with PET-CT technology are determined through the design of a costing system. The aim has been to provide to the Centro de Investigacion en Ciencias Atomicas, Nucleares y Moleculares (Cicanum), an appropriate decision making as to definition of sale prices in the CCSS-Cicanum Project. This project has arisen of the partnership between the Cicanum and Caja Costarricense del Seguro Social (CCSS), in order to satisfy the needs in the area of oncology; specifically, the acquisition of PET-CT technology. Diagnostic studies can be performed with this technology to detect and measure the evolution of different types of cancer. Additionally, the realization of these studies have required the acquisition of a cyclotron for the production of the radiopharmaceutical called FDG by Cicanum. The theoretical and conceptual aspects relating to atomic, nuclear and molecular sciences are defined, as well as the contribution of the Universidad de Costa Rica for research in these areas and perspectives of costing systems. The administrative-accounting area of Cicanum is described and diagnosed, as well as of the CCSS-Cicanum Project, to know its scope, management and allocation of costs. The situation diagnosed in the administrative-accounting area of Cicanum and the CCSS-Cicanum Project are analyzed, through the tool Swotr (strengths, opportunities, weaknesses, threats and risks). A costing system is elaborated for Cicanum, based on work orders. The system has been developed in a series of electronic work sheets that have allowed to obtain costs associated with the production of the radiopharmaceutical FDG and the rendering of diagnostic services with PET-CT technology to the CCSS, as well as the definition of sales price. As a complement to the above, a master budget is done, which provides a financial vision of the project in its first ten years of operation [es

Report on the Fourth Reactor Refueling. Laguna Verde Nuclear Central. Unit 1. April-May 1995

International Nuclear Information System (INIS)

Mendoza L, A.; Flores C, E.; Lopez G, C.P.F.

1995-01-01

The fourth refueling of the Unit 1 of Laguna Verde Nuclear Central was executed in the period of April 17 to May 31 of 1995 with the participation of a task group of 358 persons, included technicians and radiation protection officials and auxiliaries.The radiation monitoring and radiological surveillance to the workers was present length ways the refueling process and always attached to the ALARA criteria. The check points for radiation levels were set at: primary container or dry well, reloading floor, decontamination room (level 10.5), turbine building and radioactive waste building. To take advantage of the refueling process, rooms 203 and 213 of the turbine buildings were subject to inspection and maintenance work in valves, heaters and drains of heaters. Management aspects as personnel selection and training, costs, and countable are also presented in this report. Owing to the high cost of man-hour of the members of the ININ staff, its participation in the refueling process was in smaller number than years before. (Author)

Nuclear data banks generation by interpolation; Generacion de bancos de datos nucleares mediante interpolacion

Energy Technology Data Exchange (ETDEWEB)

Castillo M, J A

1999-07-01

Nuclear Data Bank generation, is a process in which a great amount of resources is required, both computing and humans. If it is taken into account that at some times it is necessary to create a great amount of those, it is convenient to have a reliable tool that generates Data Banks with the lesser resources, in the least possible time and with a very good approximation. In this work are shown the results obtained during the development of INTPOLBI code, use to generate Nuclear Data Banks employing bicubic polynominal interpolation, taking as independent variables the uranium and gadolinia percents. Two proposal were worked, applying in both cases the finite element method, using one element with 16 nodes to carry out the interpolation. In the first proposals the canonic base was employed, to obtain the interpolating polynomial and later, the corresponding linear equation systems. In the solution of this systems the Gaussian elimination methods with partial pivot was applied. In the second case, the Newton base was used to obtain the mentioned system, resulting in a triangular inferior matrix, which structure, applying elemental operations, to obtain a blocks diagonal matrix, with special characteristics and easier to work with. For the validation tests, a comparison was made between the values obtained with INTPOLBI and INTERTEG (create at the Instituto de Investigaciones Electricas (MX) with the same purpose) codes, and Data Banks created through the conventional process, that is, with nuclear codes normally used. Finally, it is possible to conclude that the Nuclear Data Banks generated with INTPOLBI code constitute a very good approximation that, even though do not wholly replace conventional process, however are helpful in cases when it is necessary to create a great amount of Data Banks.

Research, development and technological innovation of wind turbine control systems; Investigacion, desarrollo e innovacion tecnologica de sistemas de control de aerogeneradores

Energy Technology Data Exchange (ETDEWEB)

Garduno Ramirez, Raul; Rodriguez Martinez, Arnulfo Antelmo; Sanchez Parra, Marino; Martinez Morales, Miguel Angel; Hernandez Cuellar, Maria Aurora; Alcaide Godinez, Indira Xochiquetzal; Re Lopez, Victor Genaro; Hernandez Gonzalez, Roberto [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2012-07-01

Control systems constitute the brain and the nervous system of modern machines, such as wind turbine generators (TGE by its acronym in Spanish). TGEs can work efficiently, safely and almost autonomously, thanks to the control systems with which they are equipped. Conversely, any malfunctioning of the control system may cause failure or damage of a component, a subsystem or even destruction of the TGE itself. This paper introduces some basic facts about generation of electric power from wind energy in the world and Mexico, wind turbogenerators and their most relevant technologies, TGE control systems, and R and TD+I about TGE control systems performed at the Instituto de Investigaciones Electricas. [Spanish] Los sistemas de control constituyen el cerebro y el sistema nervioso de las maquinas modernas, como aerogeneradores (AG). Los AG pueden trabajar eficiente, segura y casi autonomamente, gracias a los sistemas de control con los que estan equipados. De manera inversa, cualquier mal funcionamiento del sistema de control puede provocar falla o dano de un componente, subsistema o incluso la destruccion del propio AG. Este documento introduce algunos hechos basicos en torno a la generacion de energia electrica a partir de energia eolica en el mundo y Mexico, los aerogeneradores y sus tecnologias mas importantes, sistemas de control de AG e I+DT alrededor de los sistemas de control de AG realizados en el Instituto de Investigaciones Electricas.

System of selective disemination of information at ININ

International Nuclear Information System (INIS)

Martinez G, M.A.

1981-01-01

A study of the systems of selective dissemination of information (SDI) is presented, the concepts for such systems outlined, and their developments traced in advanced countries, its forms of operation and implications for the special libraries. Also the operation of INIS at CIDN (Centro de Informacion y Documentacion Nuclear) is presented, together with recommendations and conclusions to improve the development of this service in Mexico. (author)

Cartografía de la investigación en lectura digital. Las investigaciones de Territorio Ebook en el contexto internacional

Directory of Open Access Journals (Sweden)

Dantas, Taisa

2017-01-01

Full Text Available La Fundación Germán Sánchez Ruipérez realizó entre los años 2009 y 2014 una importante experiencia de investigación en el ámbito de la lectura digital: el programa Territorio Ebook. En ella estuvieron involucrados cerca de 300 lectores entre 9 y 75 años, además de bibliotecarios, autores e investigadores de la Universidad de Salamanca, Universidad Pontificia de Salamanca y Universidad de Granada. Entre los objetivos de este programa estuvo el de elaborar una etnografía del lector digital de las bibliotecas públicas de España, pero su alcance fue mayor ya que al contrastar estas investigaciones con otras hechas en diferentes países, es posible extrapolar sus resultados más allá de sus fronteras. En este artículo destaca uno de los diversos matices del programa Territorio Ebook, la investigación distribuida por grupos de edad. Se propone un estudio comparativo entre los resultados alcanzados por la Fundación Germán Sánchez Ruipérez según cada grupo de edad e investigaciones realizadas en otros lugares con esta misma variante. Como conclusión destaca la eficacia de investigar en profundidad todos los grupos de lectores, teniendo en cuenta que cada uno tiene características específicas que conducen a diferentes resultados.

Los 'padres' de Internet obtienen el Principe de Asturias de Investigacion. Las tecnologias clave de la Red y la WWW reciben el galardon

CERN Multimedia

Cuartas, J

2002-01-01

"Los estadounidenses Lawrence Roberts, Robert Kahn y Vinton G. Cerf y el britanico Tim Berners-Lee, cuatro de los mas relevantes artifices de Internet, fueron distinguidos ayer con el Premio Principe de Asturias de Investigacion Cientifica y Tecnica en representacion de las "miles de personas y muchas instituciones" que han hecho posible este avance de nuestro tiempo, que, segun el acta del galardon, "esta cambiando el mundo"." (1 page).

RESISTENCIAS FEMENINAS: INVESTIGACIONES ENTRE EL CUERPO Y EL HABLA

Directory of Open Access Journals (Sweden)

Thais Oliveira Brandão

2015-06-01

Full Text Available Presentamos una propuesta de análisis de lo femenino dentro de algunos conceptos clave de la teoría feminista como son: el género, el sexo y la sexualidad, desde una postura implicada con investigaciones comprometidas, situadas y encarnadas. Analizaremos posibilidades de investigar los lenguajes orales y corporales de las mujeres con el fi n de encontrar la materialidad del cuerpo/habla en una relación sujeto/sujeto en investigación. Resaltamos que estas expresiones (orales y corporales son vividas como una forma de resistencia, de creación y que, por eso mismo, reclaman libertad. El cuerpo y el habla femeninos, interdependientes, se expresan con estrategias propias y constituyen un espacio común de liberación que también está disponible para ser investigado. AbstractAn approach on analyzing some key concepts of feminism theory, such as: gender, sex and sexuality which involves a committed thought with the compromised, embodied and located research we show in this paper. We will analyze the possibilities of looking for female oral and body languages in order to fi nd the materiality of the body/speech in relation with subject/subject in research. We emphasize that these expressions (oral and body languages are lived as a resistance and are constructed. That is why they demand freedom. The female’s body and speech are independent and are expressed with their own strategies and space of freedom which is able to be researched.

La Etnomatemática y la Educación Matemática: Un recorrido epistemológico, curricular y metodológico en las investigaciones de la Universidad de Antioquia

Directory of Open Access Journals (Sweden)

Erica-Lorena Avendaño-Tobón

2016-01-01

Full Text Available Este artículo es producto de las reflexiones generadas en el grupo de estudio “Etnomatemática y Educación Matemática” adscrito al grupo de investigación “Matemáticas, Educación y Sociedad-MES”, en el marco de la construcción de un estado del arte de las investigaciones realizadas en el campo de la Etnomatematica en la Facultad de Educación de la Universidad de Antioquia. Estado del arte, que se constituye a partir del diálogo entre nuestros idearios sobre la Etnomatemática y la Educación Matemática y los caminos recorridos, esto es, las perspectivas epistemológicas, metodológicas y curriculares de las investigaciones analizadas. Diálogos que nos posibilitaron reconocer las tensiones y desafíos de ser y hacer investigación en el campo de la Etnomatemática y la Educación Matemática, entre ellos se encuentra: la mirada del investigador, escuchar otras formas de ser y hacer desde las comunidades y sistematizar las prácticas estudiadas. Para lograrlo, planteamos la necesidad de tejer conversaciones con los documentos, con maestras, maestros y/o investigadores participantes de estos estudios que nos posibilitaron, además reconocer y ampliar horizontes teóricos y metodológicos para futuras investigaciones en el campo.

Subcadmic and epicadmic flow in the dry tube of the TRIGA Mark III reactor of the Nuclear Center of Mexico

International Nuclear Information System (INIS)

Delfin L, A.; Mazon R, R.; Nava R, B.

1991-04-01

The mensuration of the thermal and fast flows of the irradiation facilities of the core of the reactor is important, since allow us to determine the optimum time of irradiation of the samples in the reactor. The Dry Tube especially, is an irradiation installation that it was designed in the I.N.I.N. to supply the pneumatic irradiation system of capsules with durations bigger than 15 minutes and it can be used for exposures until a maximum of three hours. The main users are the Nuclear Chemistry Department and the Neutron activation analysis. In this report the neutron flux sub cadmic and epi cadmic obtained in an experimental way in the Dry Tube for the reactor operating in stationary state to powers of 100 Kw, 300 Kw and 1000 Kw are reported and with these values it is interpolated for other powers. (Author)

El foro romano de Iuliobriga (Cantabria: nuevas investigaciones arqueológicas

Directory of Open Access Journals (Sweden)

Cepeda Ocampo, Juan José

2009-12-01

Full Text Available This article offers a general interpretation of Iuliobriga’s forum, emphasizing its characteristics and peculiarities from the information obtained in the latest archaeological research. It focuses on the results of an excavation made in 2004 inside the church of Santa María in Retortillo. This archaeological dig has allowed us to broaden the view we had of the forum’s square, thanks to the discovery of a new functional space inside it. The archaeological research has also revealed information about the origin of the habitat in Iuliobriga and permits the forum to be dated with certainty in the Flavian period.Se ofrece una interpretación general del foro de Iuliobriga, destacando sus características y peculiaridades tras la información obtenida en las últimas investigaciones arqueológicas. En especial, se presentan los resultados de una excavación realizada en 2004 en el interior de la iglesia de Santa María de Retortillo, la cual ha permitido ampliar la visión que se tenía de la plaza porticada del foro, con el descubrimiento de un nuevo espacio funcional dentro de éste. La misma intervención arqueológica ha aportado datos sobre el origen del hábitat en Iuliobriga y sobre la datación flavia del conjunto monumental del foro.

Calidad de vida: panorámica de investigaciones clínicas

Directory of Open Access Journals (Sweden)

Geraldine V. Padilla

2005-01-01

Full Text Available Este informe proporciona una panorámica de investigaciones clínicas pertenecientes a los estudios de la calidad de vida relacionada con la salud (CDVRS incluyendo cuestiones sobre el significado de la calidad de vida en la atención sanitaria, campos y definiciones conceptuales, teorías, definiciones operacionales, la relevancia clínica de resultados estadísticos significativos, y la relación entre investigación clínica, práctica clínica, valoraciones de CDVRS y resultados de CDVRS. Se revisan campos no directamente pertenecientes a la CDVRS y definiciones generales así como los campos y definiciones de la CDVRS. Las teorías y modelos presentados distinguen entre predictores y resultados de calidad de vida. Se describen unas pocas medidas de calidad de vida útiles y bien conocidas, así como útiles depósitos de cuestionarios en páginas web. El concepto de diferencia mínima clínicamente importante proporciona una estrategia para determinar la significación clínica de la significación estadística y más allá de ella. Finalmente se ofrece un modelo basado en la relación cuidador-paciente para explicar la influencia de la investigación clínica en la conducta clínica y los resultados de CDVRS.

Síndrome metabólico y preeclampsia: los aportes realizados por el Instituto de Investigaciones de la Fundación Cardiovascular de Colombia Metabolic syndrome and pre-eclampsia: contributions realized by the research Institute of the Colombian Cardiovascular Foundation

OpenAIRE

Patricio López-Jaramillo; Federico Silva; Paul A Camacho; Lina P Pradilla; Ronald García; Christian Rueda-Clausen; Yalil Bracho; Sandra Silva; Ligia Rueda; Narella Rodríguez; Juan G Zarruk; Mayaris Mendoza; Mario Arenas; William Arenas; Isabel C Bolívar

2006-01-01

Durante los últimos años, el Instituto de Investigaciones de la Fundación Cardiovascular de Colombia ha centrado sus proyectos en el estudio de las diferencias en los mecanismos etiofisiopatológicos de la hipertensión inducida por el embarazo y del síndrome metabólico en poblaciones de países desarrollados y en vía de desarrollo, así como en el peso específico de los factores de riesgo que determinan la presentación de estas enfermedades. Los resultados obtenidos de las investigaciones realiz...

Dosimetric properties of LIF:Mg,CuP+PTFE

International Nuclear Information System (INIS)

Gonzalez Martinez, P.R.; Azorin Nieto, J.; Ramirez Luna, A.

1998-01-01

The work presents the preparation method, as well as the characterization of the dosemeters of LiF;Mg,Cu+PTFE developed in the National Institute of Nuclear Investigations (ININ) Mexico, Among the carried out tests can mention, sensibility, detection threshold, equivalent of bottom, uniformity, reproducibility, dissipation, answer in function of the dose and kinetic parameters

Evaluación del desempeño y motivación del personal en los Institutos de Investigaciones de Salud

Directory of Open Access Journals (Sweden)

Omar Ramón Urdaneta Quintero

2013-01-01

Full Text Available La evaluación del desempeño es una herramienta de vital importancia para los que gerencian el recurso humano a favor de mejorar el desarrollo progresivo de las habilidades y el grado de motivación de los trabajadores. En ese sentido, la motivación es la fuerza que actúa dentro de un individuo para iniciar y dirigir su comportamiento. El objetivo de la investigación fue analizar la evaluación del desempeño y la motivación del personal en los Institutos de Investigaciones de Salud. El estudio fue descriptivo, transeccional, no experimental y de campo. La población estuvo conformada por los institutos de investigaciones de la facultad de medicina y odontología de la Universidad del Zulia siendo las unidades de observación el personal adscrito a estas instituciones, como técnica de recolección de datos se usó el cuestionario tipo encuesta, el cual fue validado por un grupo de expertos, aplicándose luego una prueba piloto y cuyo nivel de confiabilidad fue de 0,95. Los resultados arrojaron la ausencia de una evaluación del desempeño que mida el rendimiento de los trabajadores, ausencia de reconocimientos frecuentes al personal, así como la no aplicabilidad de sanciones por violar una norma, se concluyó la ausencia de evaluaciones formales e informales que generan en el personal malestar en relación a las escasas recompensas y la no aplicación de sanciones por el trabajo incumplido.

Factores psicosociales y bienestar del trabajador en investigaciones realizadas en Colombia y España, durante el período 2002-2012 .

OpenAIRE

Beltrán Cabrejo, Andrea del Pilar

2014-01-01

Introducción. En el presente trabajo se pretende identificar los factores psicosociales laborales asociados con el bienestar del trabajador en investigaciones realizadas en Colombia y España, durante el periodo 2002 – 2012. Objetivo. Este trabajo tiene como fin, precisar sobre el desarrollo investigativo en lo referente a los factores psicosociales y su relación con el bienestar, de los trabajadores en Colombia y España durante el período 2002-2012, por medio de los estudios encontrados ...

Experiencia de investigación-acción participativa en el Centro de Investigaciones en Ciencias de la Tierra (CICTERRA, UNC-CONICET)

OpenAIRE

Centro de Investigaciones en Ciencias de la Tierra (CICTERRA)

2017-01-01

Objetivo: Generar un proyecto “Proyecto de unidades ejecutoras” (PUE) consensuado entre la mayoría de los integrantes del instituto que fomente las prácticas colaborativas y la interacción interdisciplinaria. Como primera etapa, se implementó internamente un Taller de Ciencia Abierta y Colaboración Interdisciplinaria con el apoyo del Centro de Investigaciones para la Transformación (CENIT). Se trabajó sobre las percepciones del colectivo acerca del pasado, presente y futuro del CICTERRA y sob...

La ética de la investigación social en debate : hacia un abordaje particularizado de los problemas éticos de las investigaciones sociales

OpenAIRE

Santi, María Florencia

2013-01-01

Gran parte del conocimiento que se genera en ciencias sociales involucra un número considerable de personas, quienes participan respondiendo preguntas, relatando sus historias, siendo informantes clave, participando de experimentos o siendo simplemente observados por las y los investigadores. Estos participantes son quienes proveen los datos primarios a partir de los cuales se hace investigación social. El primer interrogante que surge es: ¿tienen estas investigaciones la potencialidad de...

Evaluación de la seguridad contra incendios en el Centro de Investigaciones Geológicas de Petroproducción - Quito

OpenAIRE

Barrera Pijal, Einstein Wagner

2014-01-01

296 hojas : ilustraciones, 29 x 21 cm + CD-ROM 5418 En el presente trabajo se evaluó el riesgo de incendio del Centro de Investigaciones Geológicas Quito (CIGQ) y se propuso un Sistema de Protección y Plan de Emergencia. Mediante el método "What if.?" y listas de verificación pertinentes, se identificaron los peligros de incendio correspondientes al surgimiento, propagación, dificultad de extinción y obstáculos de evacuación. Los riesgos respectivos a los peligros identificados, se valor...

Análisis exploratorio de investigaciones sobre los motores de combustión interna que trabajan con biogás

OpenAIRE

Arango Gómez, Jorge Eduardo; Sierra Vargas, Fabio Emiro; Silva Leal, Vladimir

2014-01-01

Resumen Las metodologías y aplicaciones sobre el uso de la tecnología del biogás aparecen en el mundo en gran parte de las investigaciones científicas sobre el tema de la eficiencia, la combustión y el control de emisiones en motores de combustión interna (MCI), las cuales han venido desarrollando en un contexto histórico el mejoramiento de aspectos sociales, económicos y ambientales de Asia, Europa, África y Latinoamérica. En el presente análisis se da una mirada al estado del arte de los mo...

Investigaciones con enfoque cualitativo en la atención primaria de salud Research with qualitative approach in primary health care

Directory of Open Access Journals (Sweden)

Luisa Álvarez Vázquez

2006-09-01

Full Text Available Las investigaciones sobre Atención Primaria de Salud pueden ser diversas, en ellas se puede necesitar no solo de lo que se relaciona con el diagnóstico médico de las afecciones, sino de la profundización en el conocimiento de problemas relevantes para la toma de decisiones en aspectos de esta atención, muchos de los cuales necesitan de técnicas específicas para su estudio. Este trabajo pretende no solo mostrar valoraciones de estudios realizados con técnicas cualitativas, sino también brindar elementos conceptuales de las técnicas utilizadas. El trabajo parte de los principios básicos de la Atención Primaria y sigue como procedimientos la revisión bibliográfica en libros, revistas e información disponible en Infomed. En la revisión bibliográfica se identifican investigaciones con enfoque cualitativo relacionadas con este tema y de las técnicas cualitativas más utilizadas. Se ejemplifican los resultados en campos específicos, que requieren de investigaciones de enfoque cualitativo, y se brindan comentarios sobre la necesidad de ver los estudios cualitativos y cuantitativos como complementarios. Como aspecto fundamental se expone que las técnicas cualitativas aplicadas a la Atención Primaria de Salud han estado limitadas, así como la existencia de bibliografía y la factibilidad de su aplicación a partir de los ejemplos brindados.The researches on primary health care may be diverse. Not only what is related to the medical diagnosis of the affections may be necessary, but also to go deep into the knowledge of the relevant problems for the decision making in aspects of this sphere that need specific techniques for their study. This paper is aimed at showing assessments of studies conducted with qualitative techniques and at giving conceptual elements of the techniques used. It is based on the basic principles of Primary Care and follows as procedures the bibliographic review in books, journals and information available in

INCIDENCIA DE LA INVESTIGACION BIBLIOGRAFICA EN EL APRENDIZAJE EN ESTUDIANTES DEL NIVEL BÁSICO DE LA CARRERA ADMINISTRACION DE EMPRESAS DE UNIVERSIDAD ESTATAL PENINSULA DE SANTA ELENA

Directory of Open Access Journals (Sweden)

William Caiche

2016-04-01

Full Text Available El desarrollo de Hábitos de lectura en estudiantes de educacion superior represent un verdadero reto para el docente, sobre todo porque dicha práctica impulsa la capacidad de analizar y de emitir juicios de valor y consolida las bases cognitivas que recibe en el proceso de aprendizaje, se ha identificado que, el estudiante de Administracion de empresas en el desarrollo de actividades academicas cita referencias bibliograficas que, de manera mayoritaria proviene de consultas de bajo nivel academico, por otro lado, es escaso el numero de referencias que incluyen, esta situacion limita el aprendizaje, y se reflejan en los resultadops de evaluacion del proceso. Este trabajo plantea como objetivo determinar el efecto que tiene en el aprendizaje la implementacion de una guia de investigacion bibliografica paa el nivel basico en los estudiantes de Carrera de Administracion de Empresas de la UPSE; para el efecto se recurre a un diseño de investigacion explicativo que a traves de la compracion del antes y el despues permita verificar el logro de tal objetivo.

Nuclear data banks generation by interpolation

International Nuclear Information System (INIS)

Castillo M, J. A.

1999-01-01

Nuclear Data Bank generation, is a process in which a great amount of resources is required, both computing and humans. If it is taken into account that at some times it is necessary to create a great amount of those, it is convenient to have a reliable tool that generates Data Banks with the lesser resources, in the least possible time and with a very good approximation. In this work are shown the results obtained during the development of INTPOLBI code, use to generate Nuclear Data Banks employing bicubic polynominal interpolation, taking as independent variables the uranium and gadolinia percents. Two proposal were worked, applying in both cases the finite element method, using one element with 16 nodes to carry out the interpolation. In the first proposals the canonic base was employed, to obtain the interpolating polynomial and later, the corresponding linear equation systems. In the solution of this systems the Gaussian elimination methods with partial pivot was applied. In the second case, the Newton base was used to obtain the mentioned system, resulting in a triangular inferior matrix, which structure, applying elemental operations, to obtain a blocks diagonal matrix, with special characteristics and easier to work with. For the validation tests, a comparison was made between the values obtained with INTPOLBI and INTERTEG (create at the Instituto de Investigaciones Electricas (MX) with the same purpose) codes, and Data Banks created through the conventional process, that is, with nuclear codes normally used. Finally, it is possible to conclude that the Nuclear Data Banks generated with INTPOLBI code constitute a very good approximation that, even though do not wholly replace conventional process, however are helpful in cases when it is necessary to create a great amount of Data Banks

Integration of the program TNXYZ in the platform SALOME

International Nuclear Information System (INIS)

Chaparro V, F. J.; Silva A, L.; Del Valle G, E.; Gomez T, A. M.; Vargas E, S.

2013-10-01

This work presents the procedure realized to integrate the code TNXYZ like a processing tool to the graphic simulation platform SALOME. The code TNXYZ solves the neutron transport equation in stationary state, for several energy groups, quantizing the angular variable by the discrete ordinates method and the space variable by nodal methods. The platform SALOME is a graphic surrounding designed for the construction, edition and simulation of mechanical models focused to the industry and contrary to other software, it allows to integrate external source codes to the surrounding, to form a complete scheme of execution, supervision, pre and post information processing. The code TNXYZ was programmed in the 90s in a Fortran compiler, but to be used at the present time the code should be actualized to the current compiler characteristics; also, in the original scheme was carried out a modularization process, that is to say, the main program was divided in sections where the code carries out important operations, with the intention of flexibility the data extraction process along its processing sequence and that can be useful in a later development of coupling. Finally, to verify the integration a fuel assembly BWR was modeled, as well as a control cell. The cross sections were obtained with the Monte Carlo Serpent code. Some results obtained with Serpent were used to verify and to begin with the validation of the code, being obtained an acceptable comparison in the infinite multiplication factor. The validation process should extend and one has planned to present in a future work. This work is part of the development of the research group formed between the Escuela Superior de Fisica y Matematicas del Instituto Politecnico Nacional (IPN) and the Instituto Nacional de Investigaciones Nucleares (ININ) in which a simulation Mexican platform of nuclear reactors is developed. (Author)

Optimization of the production process of hybrid and multivalent formulation Bombesin/RGD for the opportune detection of breast cancer

International Nuclear Information System (INIS)

Robles M, M.

2013-01-01

The radiopharmaceuticals of third generation are used in nuclear medicine to obtain images of specific molecular targets, and they are unique in their capacity to detect in vivo specific biochemical sites as receptors that are over-expressed in diverse illness. In cancer cells several types of receptors are over-expressed, as the integrin s α(v)β(3) and α(v)β(5) that specifically recognize the sequence RGD (Arginine-Glycin-Ac. Aspartic) and gastrin-releasing peptide that recognizes specifically to the peptide Lys 3 -Bombesin. The integrin s α(v)β(3) and α(v)β(5) are involved in the tumor angio genesis processes and the gastrin-releasing peptide is over-expressed in breast and prostate cancer. The molecular recognition of the specific receptors is the basis to be utilized as targets of the radiopharmaceuticals 99m Tc-HYNIC-Bombesin and 99m Tc-HYNIC-RGD. In this work was developed a lyophilized pharmaceutical formulation effective, stable and safe for the simultaneous obtaining of the radiopharmaceuticals 99m Tc-HYNIC-Bombesin ( 99m Tc-EDDA/HYNIC-Lys 3 -Bombesin) and 99m Tc-HYNIC-RGD ( 99m Tc EDDA/HYNIC-E-[c(RGDfK)] 2 ). Later on the production process of the product HYNIC-Bombesin/RGD-Sn was optimized using a factorial design and the formulation was transferred to the production plant of radiopharmaceuticals of the Instituto Nacional de Investigaciones Nucleares (ININ). The optimized formulation is described in the following chart: HYNIC-[Lys 3 ]-Bombesin - 12.5 μg; HYNIC-E-c[RGDfK] 2 - 12.5 μg; Stannous chloride (SnCl 2 ) - 20 μg; Ethylenediamine diacetic acid (EDDA) - 10 mg; N-tris(hydroxymethyl)methyl glycin (Tricine) - 20 mg; Mannitol - 50 mg. The production process was validated and were carried out the stability studies under refrigeration conditions. (Author)

Integration of the program TNXYZ in the platform SALOME; Integracion del programa TNXYZ en la plataforma SALOME

Energy Technology Data Exchange (ETDEWEB)

Chaparro V, F. J.; Silva A, L.; Del Valle G, E. [IPN, Escuela Superior de Fisica y Matematicas, Av. Instituto Politecnico Nacional s/n, U.P. Adolfo Lopez Mateos, Edificio 9, Col. San Pedro Zacatenco, 07738 Mexico D. F. (Mexico); Gomez T, A. M.; Vargas E, S., E-mail: javier.paquito@hotmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2013-10-15

This work presents the procedure realized to integrate the code TNXYZ like a processing tool to the graphic simulation platform SALOME. The code TNXYZ solves the neutron transport equation in stationary state, for several energy groups, quantizing the angular variable by the discrete ordinates method and the space variable by nodal methods. The platform SALOME is a graphic surrounding designed for the construction, edition and simulation of mechanical models focused to the industry and contrary to other software, it allows to integrate external source codes to the surrounding, to form a complete scheme of execution, supervision, pre and post information processing. The code TNXYZ was programmed in the 90s in a Fortran compiler, but to be used at the present time the code should be actualized to the current compiler characteristics; also, in the original scheme was carried out a modularization process, that is to say, the main program was divided in sections where the code carries out important operations, with the intention of flexibility the data extraction process along its processing sequence and that can be useful in a later development of coupling. Finally, to verify the integration a fuel assembly BWR was modeled, as well as a control cell. The cross sections were obtained with the Monte Carlo Serpent code. Some results obtained with Serpent were used to verify and to begin with the validation of the code, being obtained an acceptable comparison in the infinite multiplication factor. The validation process should extend and one has planned to present in a future work. This work is part of the development of the research group formed between the Escuela Superior de Fisica y Matematicas del Instituto Politecnico Nacional (IPN) and the Instituto Nacional de Investigaciones Nucleares (ININ) in which a simulation Mexican platform of nuclear reactors is developed. (Author)

(153)Sm-EDTMP for pain relief of bone metastases from prostate and breast cancer and other malignancies.

Science.gov (United States)

Correa-González, Luis; Arteaga de Murphy, Consuelo; Pichardo-Romero, Pablo; Pedraza-López, Martha; Moreno-García, Claudia; Correa-Hernández, Luis

2014-05-01

Approximately 85% of patients with cancer suffer severe metastatic bone pain for which radionuclide therapy has been employed for pain palliation. We undertook this study to evaluate the pain relief effect of (153)Sm-EDTMP in Mexican patients with severe and painful bone metastases from mainly prostate, breast, and renal cancer and other malignancies. Patients (277) with intense sustained pain caused by bone metastases were referred to the Nuclear Medicine Department of the Oncology Hospital of the Mexican Social Security Institute. The patients had to have acceptable physical conditions, a previous positive (99m)Tc-MDP scan and blood values within normal range. (153)Sm-EDTMP was prepared at the Instituto Nacional de Investigaciones Nucleares (ININ) and 37 MBq/kg of body weight was injected intravenously. Pain palliation was evaluated with a visual analogue scale (VAS) and a verbal rating scale (VRS) before treatment and 3 and 12 weeks after treatment was started. The age interval of the patients was 24-92 years with a mean age of 64 ± 12 years. Mean values for hemoglobin, leukocyte and platelet counts did not statistically differ at zero time, 3 and 12 weeks after treatment. Pain intensity and relief assessment were statistically different: 9.1 ± 0.61 units initially; 4.2 ± 1.3 units 3 weeks later (54%) and after 12 weeks the pain diminished to 2.4 ± 1.4 units (74%) in the pain relief score scales. (153)Sm-EDTMP was readily available, safe and well tolerated. We conclude that (153)Sm-EDTMP was an adequate palliative agent and was the best option for our Mexican patients to relieve their severe metastatic bone pain. Copyright © 2014 IMSS. Published by Elsevier Inc. All rights reserved.

Quality characteristics of chemicals for the radioimmunoassay of thyroxine and thyrotropin

International Nuclear Information System (INIS)

Verdeja I, C.E.

1994-01-01

Radioimmunoassay is a form of saturation analysis in which the test material competes with labelled antigen for a limited amount of antibody, the amount of label displaced being a measure of the antigen in the test sample. In this country, the kits for Radioimmunoassay (RIA) are imported, and this increase the cost of it. Because this lack of production, the National Institute of Nuclear Research (ININ) has developed RIA's kits for the thyroxine (T 4 ), Thyrotropin (TSH) and Triyodotironine (T 3 ) hormones. This work presents the conclusions of the test recommended by the WHO. The quality test were: recuperation, cross reactions, basic parameters, intra and inter assay variations, sensibility and others. The results show that the RIA's kits of the ININ have a good behavior and can be use in the clinical laboratory. (Author)

Üniversitede Verilen Öğle Yemeğinin Kız Öğrencilerin Beslenme Durumuna Etkisi

Directory of Open Access Journals (Sweden)

Müberra K. Işıksoluğu

2015-02-01

Full Text Available Gazi Üniversitesinden 320 kız öğrencinin enerji ve besin öğeleri tüketim düzeyleri belirlenmiş, üniversitede verilen öğle yemeğinden (ÜÖY yiyenlerle bu yemekten yemeyenlerin tüketimleri karşılaştırılmıştır. Bulguların başlıcaları şunlardır: (1 Besin öğelerinin çoğunun ve enerjinin günlük ortalama tüketimi alınması önerilen miktarların yaklaşık ¾’ünü karşılamaktadır. (2 En yetersiz tüketilenler sırasıyla demir, A vitamini, kalsiyum, riboflavin ve enerjidir. (3 Enerji, besin kaynaklarından dengeli karşılanmaktadır. (4 ÜÖY yiyen grubun enerji, hayvansal ve toplam protein, tiamin, riboflavin ve niasin tüketim ortalamaları ÜÖY yemeyen grubunkinden yüksektir; iki grubun ortalamaları arasındaki farklar önemlidir (p<0.01, p<0.05. (5 Bazı yemeklerdeki kalite düşüklüğü, ÜÖY yararlanmayı azaltmaktadır. Bulgular, öğrencilerin iyi beslenemediği, üniversitede verilen öğle yemeğinin öğrencilerin beslenmesine önemli katkısı olduğu, bu katkının beslenme servisinde alınacak etkili önlemlerle artırılabileceği sonucuna varılmıştır.

Visual interface for the automation of the instrumented pendulum of Charpy tests used in the surveillance program of reactors vessel of nuclear power plants; Interfase visual para la automatizacion del pendulo instrumentado de pruebas Charpy utilizado en el programa de vigilancia de la vasija de reactores de centrales nucleares

Energy Technology Data Exchange (ETDEWEB)

Rojas S, A.S.; Sainz M, E.; Ruiz E, J.A. [ININ, Carretera Mexico-Toluca Km.36.5, Mpio. de Ocoyoacac, Estado de Mexico (Mexico)]. E-mail: asrs@nuclear.inin.mx; esm@nuclear.inin.mx; jare@nuclear.inin.mx

2004-07-01

Inside the Programs of Surveillance of the nuclear power stations periodic information is required on the state that keep the materials with those that builds the vessel of the reactor. This information is obtained through some samples or test tubes that are introduced inside the core of the reactor and it is observed if its physical characteristics remain after having been subjected to the radiation changes and temperature. The rehearsal with the instrumented Charpy pendulum offers information on the behavior of fracture dynamics of a material. In the National Institute of Nuclear Research (ININ) it has an instrumented Charpy pendulum. The operation of this instrument is manual, having inconveniences to carry out rehearsals with radioactive material, handling of high and low temperatures, to fulfill the normative ones for the realization of the rehearsals, etc. In this work the development of a computational program is presented (virtual instrument), for the automation of the instrumented pendulum. The system has modules like: Card of data acquisition, signal processing, positioning system, tempered system, pneumatic system, compute programs like it is the visual interface for the operation of the instrumented Charpy pendulum and the acquisition of impact signals. This system shows that given the characteristics of the nuclear industry with radioactive environments, the virtual instrumentation and the automation of processes can contribute to diminish the risks to the personnel occupationally exposed. (Author)

Devital dişlerin ıntrakoronal ağartmasında kullanılan iki farklı materyalin klinik etkinliğinin karşılaştırılması

OpenAIRE

Keçeci, Diljin

2009-01-01

SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 2006 Eylül; 13(3) Devital dişlerin ıntrakoronal ağartmasında kullanılan iki farklı materyalin klinik etkinliğinin karşılaştırılması Diljin Keçeci Devital diş renklenmeleri diş dizisinde kolayca ayırt edilebildiği için özellikle ön dişlerde estetik sorunlara yol açmaktadır. Bu çalışmada kanal tedavisi uygulanmış veya travmaya maruz kalmış, ön dişlerde ortaya çıkan renklenmelerin ağartılması amacıyla bir sodyum perborat (Starbrite, Dentr...

Aportes teóricos derivados de las investigaciones sobre el lenguaje entre el 2000 y el 2010: una revisión

OpenAIRE

Johny Villada Zapata; Liliana Chaves Castaño

2012-01-01

El artículo presenta el análisis de contenido derivado de una revisión sistemática en la que se retomaron 57 estudios que tenían el lenguaje como tema central. Las investigaciones consultadas arrojan diversos aportes teóricos de los cuales sobresale, en primer lugar, el origen social de este proceso, tanto en la filogénesis como en la ontogénesis. En segundo lugar puede afirmarse que su desarrollo se ve afectado negativa o positivamente por variables como la nutrición, la relación con los pad...

Análisis de las investigaciones en el posgrado de geotecnia en la Universidad Nacional de Colombia sede Bogotá

OpenAIRE

Ramírez Criollo, Nubia Lucía

2012-01-01

Ese trabajo presenta el análisis de las investigaciones realizadas en el posgrado de Geotecnia de la Universidad Nacional de Colombia sede Bogotá, desde la creación en el año 1966 de los programas de especialización y maestría en Ingeniería Civil y el recién programa de Doctorado en Ingeniería – Geotecnia, creado en el año 2004. Compila y organiza de manera sistemática y crítica un total de 192 registros (trabajos de investigación de especialización, maestría y doctorado del programa de po...

Generation of nuclear data banks through interpolation

International Nuclear Information System (INIS)

Castillo M, J.A.

1999-01-01

Nuclear Data Bank generation, is a process in which a great amount of resources is required, both computing and humans. If it is taken into account that at some times it is necessary to create a great amount of those, it is convenient to have a reliable tool that generates Data Banks with the lesser resources, in the least possible time and with a very good approximation. In this work are shown the results obtained during the development of INTPOLBI code, used to generate Nuclear Data Banks employing bi cubic polynomial interpolation, taking as independent variables the uranium and gadolinium percents. Two proposals were worked, applying in both cases the finite element method, using one element with 16 nodes to carry out the interpolation. In the first proposals the canonic base was employed to obtain the interpolating polynomial and later, the corresponding linear equations system. In the solution of this system the Gaussian elimination method with partial pivot was applied. In the second case, the Newton base was used to obtain the mentioned system, resulting in a triangular inferior matrix, which structure, applying elemental operations, to obtain a blocks diagonal matrix, with special characteristics and easier to work with. For the validations test, a comparison was made between the values obtained with INTPOLBI and INTERTEG (created at the Instituto de Investigaciones Electricas with the same purpose) codes, and Data Banks created through the conventional process, that is, with nuclear codes normally used. Finally, it is possible to conclude that the Nuclear Data Banks generated with INTPOLBI code constitute a very good approximation that, even though do not wholly replace conventional process, however are helpful in cases when it is necessary to create a great amount of Data Banks. (Author)

UTILIDAD DE LAS INVESTIGACIONES MONOGRÁFICAS EN LA URACCAN, RECINTO NUEVA GUINEA

Directory of Open Access Journals (Sweden)

Oved Zeledón Membreño

2012-10-01

Full Text Available La investigación permitió conocer el estado actual y utilidad de las  monografías existentes en la biblioteca “Luz en la Selva” de la  URACCAN, recinto Nueva Guinea, 2003 – 2009.  Fue un estudio mixto, con predominancia del enfoque cualitativo, se utilizaron técnicas de recolección de datos como revisión bibliográfica, encuestas y entrevistas a través de las cuales se obtuvo resultados acerca de la clasificación de las 115 monografías realizadas entre los años 2003-2009, se destaca con mayor aporte las áreas de Ciencias de la Educación, Humanidades y Recursos Naturales y Medio Ambiente, porque exige entre sus requisitos de culminación los trabajos monográficos. El enfoque fue mixto con predominancia cualitativa. Las principales líneas de investigación fueron las de desarrollo socioeconómico ambiental y metodologías de enseñanza-aprendizaje. La comunidad universitaria tiene conocimiento de la existencia de las monografías en la biblioteca; sin embargo, las formas de divulgación no han sido efectivas. Las monografías han presentado diferentes utilidades: generando proyectos, fuente de otras investigaciones y resolución de problemáticas comunitarias.

Visual interface for the automation of the instrumented pendulum of Charpy tests used in the surveillance program of reactors vessel of nuclear power plants

International Nuclear Information System (INIS)

Rojas S, A.S.; Sainz M, E.; Ruiz E, J.A.

2004-01-01

Inside the Programs of Surveillance of the nuclear power stations periodic information is required on the state that keep the materials with those that builds the vessel of the reactor. This information is obtained through some samples or test tubes that are introduced inside the core of the reactor and it is observed if its physical characteristics remain after having been subjected to the radiation changes and temperature. The rehearsal with the instrumented Charpy pendulum offers information on the behavior of fracture dynamics of a material. In the National Institute of Nuclear Research (ININ) it has an instrumented Charpy pendulum. The operation of this instrument is manual, having inconveniences to carry out rehearsals with radioactive material, handling of high and low temperatures, to fulfill the normative ones for the realization of the rehearsals, etc. In this work the development of a computational program is presented (virtual instrument), for the automation of the instrumented pendulum. The system has modules like: Card of data acquisition, signal processing, positioning system, tempered system, pneumatic system, compute programs like it is the visual interface for the operation of the instrumented Charpy pendulum and the acquisition of impact signals. This system shows that given the characteristics of the nuclear industry with radioactive environments, the virtual instrumentation and the automation of processes can contribute to diminish the risks to the personnel occupationally exposed. (Author)

Use of calibration methodology of gamma cameras for the workers surveillance using a thyroid simulator

International Nuclear Information System (INIS)

Alfaro, M.; Molina, G.; Vazquez, R.; Garcia, O.

2010-09-01

In Mexico there are a significant number of nuclear medicine centers in operation. For what the accidents risk related to the transport and manipulation of open sources used in nuclear medicine can exist. The National Institute of Nuclear Research (ININ) has as objective to establish a simple and feasible methodology for the workers surveillance related with the field of the nuclear medicine. This radiological surveillance can also be applied to the public in the event of a radiological accident. To achieve this it intends to use the available equipment s in the nuclear medicine centers, together with the neck-thyroid simulators elaborated by the ININ to calibrate the gamma cameras. The gamma cameras have among their component elements that conform spectrometric systems like the employees in the evaluation of the internal incorporation for direct measurements, reason why, besides their use for diagnostic for image, they can be calibrated with anthropomorphic simulators and also with punctual sources for the quantification of the radionuclides activity distributed homogeneously in the human body, or located in specific organs. Inside the project IAEA-ARCAL-RLA/9/049-LXXVIII -Procedures harmonization of internal dosimetry- where 9 countries intervened (Argentina, Brazil, Colombia, Cuba, Chile, Mexico, Peru, Uruguay and Spain). It was developed a protocol of cameras gamma calibration for the determination in vivo of radionuclides. The protocol is the base to establish and integrated network in Latin America to attend in response to emergencies, using nuclear medicine centers of public hospitals of the region. The objective is to achieve the appropriate radiological protection of the workers, essential for the sure and acceptable radiation use, the radioactive materials and the nuclear energy. (Author)

Use of calibration methodology of gamma cameras for the workers surveillance using a thyroid simulator; Uso de una metodologia de calibracion de camaras gamma para la vigilancia de trabajadores usando un simulador de tiroides

Energy Technology Data Exchange (ETDEWEB)

Alfaro, M.; Molina, G.; Vazquez, R.; Garcia, O., E-mail: mercedes.alfaro@inin.gob.m [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-09-15

In Mexico there are a significant number of nuclear medicine centers in operation. For what the accidents risk related to the transport and manipulation of open sources used in nuclear medicine can exist. The National Institute of Nuclear Research (ININ) has as objective to establish a simple and feasible methodology for the workers surveillance related with the field of the nuclear medicine. This radiological surveillance can also be applied to the public in the event of a radiological accident. To achieve this it intends to use the available equipment s in the nuclear medicine centers, together with the neck-thyroid simulators elaborated by the ININ to calibrate the gamma cameras. The gamma cameras have among their component elements that conform spectrometric systems like the employees in the evaluation of the internal incorporation for direct measurements, reason why, besides their use for diagnostic for image, they can be calibrated with anthropomorphic simulators and also with punctual sources for the quantification of the radionuclides activity distributed homogeneously in the human body, or located in specific organs. Inside the project IAEA-ARCAL-RLA/9/049-LXXVIII -Procedures harmonization of internal dosimetry- where 9 countries intervened (Argentina, Brazil, Colombia, Cuba, Chile, Mexico, Peru, Uruguay and Spain). It was developed a protocol of cameras gamma calibration for the determination in vivo of radionuclides. The protocol is the base to establish and integrated network in Latin America to attend in response to emergencies, using nuclear medicine centers of public hospitals of the region. The objective is to achieve the appropriate radiological protection of the workers, essential for the sure and acceptable radiation use, the radioactive materials and the nuclear energy. (Author)

Renovación institucional y modernización científica: la creación del Instituto de Investigaciones Hematológicas a mediados de la década de 1950

Directory of Open Access Journals (Sweden)

José Buschini

2013-01-01

Full Text Available El trabajo analiza la creación y el funcionamiento inicial del Instituto de Investigaciones Hematológicas de la Academia Nacional de Medicina (Buenos Aires, Argentina en el contexto de modernización científica que se inició en el país a mediados de la década de 1950, a partir de fuentes documentales. Se presta particular atención a la conformación de las bases materiales y los mecanismos institucionales y culturales para el desarrollo de investigaciones científicas y de prácticas clínicas asistidas por procedimientos y técnicas anclados en las ciencias básicas. Asimismo, se atiende a la conformación y el desarrollo de una escuela de investigación en la Sección Leucemia Experimental, un caso que ilustra las concreciones efectivas de las iniciativas asociadas a la organización de un centro científico.

Quality characteristics of chemicals for the radioimmunoassay of thyroxine and thyrotropin.; Caracteristicas de calidad de reactivos para el radioinmunoanalisis de tiroxina y tirotropina.

Energy Technology Data Exchange (ETDEWEB)

Verdeja I, C E

1994-12-31

Radioimmunoassay is a form of saturation analysis in which the test material competes with labelled antigen for a limited amount of antibody, the amount of label displaced being a measure of the antigen in the test sample. In this country, the kits for Radioimmunoassay (RIA) are imported, and this increase the cost of it. Because this lack of production, the National Institute of Nuclear Research (ININ) has developed RIA`s kits for the thyroxine (T{sub 4}), Thyrotropin (TSH) and Triyodotironine (T{sub 3}) hormones. This work presents the conclusions of the test recommended by the WHO. The quality test were: recuperation, cross reactions, basic parameters, intra and inter assay variations, sensibility and others. The results show that the RIA`s kits of the ININ have a good behavior and can be use in the clinical laboratory. (Author).

Design of a Heliostat for Centro de Investigaciones de Astronomía (CIDA)

Science.gov (United States)

Dávila, L. E.; Barboza, S. J.; Sánchez, G. A.; Della Prugna, F.; Cova, J.; Provenzano, S. E.; Chacón, R. D.

2009-05-01

This paper explains the procedure used in the design of a heliostat to be installed at the headquarters of the Centro de Investigaciones de Astronomía, located in the city of Mérida, Venezuela. The heliostat will be used mainly for educational and public outreach programs, so the design specifications did not require compensation for rotation of the Sun's image at the focal point. The engineering computational tools CAD-CAE were used in order to allow a seamless interaction between the two disciplines involved, Mechanical Engineering and Astronomy. It has also been taken into consideration, as a starting requirement, that all materials be easily available and that all parts, excluding the optics, could be manufactured with the equipment available at the CIDA workshop. These considerations were intended to reduce the cost of the device and to increase the feasibility of construction with limited technological facilities and financial resources. The results obtained by means of the computing tools used were validated through comparison against the analytical calculations. As a result, a robust but low cost heliostat was designed which in the near future will be used to project the Sun's image on a screen for public viewing and student research projects.

Study of the processes of radionuclides transfer, heavy metals and aero-particles among the solid, dissolved phase and the air

International Nuclear Information System (INIS)

Romero G, E. T.; Ordonez R, E.; Reyes G, L. R.; Jose Y, M.

2010-01-01

In this chapter the investigations developed in the Instituto Nacional de Investigaciones Nucleares (ININ) are presented, in collaboration with specialists in diverse fields of the science. In the first place, is presented the objective and an introduction of each one of the following projects: Study of the uranium migration through the not saturated area, and Synthesis and characterization of phosphate materials by conventional techniques, projects developed under the direction and collaboration of the Ph D. Eduardo Ordonez Regil. Identification of the chemical-morphologic composition of painting mural pigments: the blue Mayan, indigo blue, the secret of the color, and investigation of the physiochemical components of the asphaltenes and malthenes of heavy crudes and vacuum residual, with the supervision of the Ph D. Miguel Jose Yacaman. Evaluation of the water quality and type of sediments of the lake-crater The Pool: one of the seven stars of Santiago Valley, Guanajuato; Study of the sorption kinetics of Cr(Vi) in floor of a container of chromium residuals in Buenavista, Guanajuato, Mexico; Investigation of the underground water hydrochemistry of the basin of the Avenues River in Pachuca de Soto, Hidalgo, and Characterization of the particle material and modeled of the dispersion and pollutants transport in the air of the Metropolitan Area of the Toluca Valley, projects carried out under the direction and collaboration of the Ph D. Lazaro Raymundo Reyes Gutierrez. Finally, is presented the most representative of the obtained results, as well as a discussion of the same ones. (Author)

Study of the processes of radionuclides transfer, heavy metals and aero-particles among the solid, dissolved phase and the air; Estudio de los procesos de transferencia de radionuclidos, metales pesados y aeroparticulas entre la fase solida, disuelta y el aire

Energy Technology Data Exchange (ETDEWEB)

Romero G, E. T.; Ordonez R, E. [ININ, Departamento de Quimica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Reyes G, L. R. [Instituto Potosino de Investigacion Cientifica y Tecnologica, Division de Geociencias Aplicadas, Camino a la Presa San Jose 2055, Col. Lomas 4 seccion, 78216 San Luis Potosi (Mexico); Jose Y, M., E-mail: elizabeth.romero@inin.gob.m [University of Texas at San Antonio, Department of Physics and Astronomy, One UTSA Circle, San Antonio TX 78249 (United States)

2010-07-01

In this chapter the investigations developed in the Instituto Nacional de Investigaciones Nucleares (ININ) are presented, in collaboration with specialists in diverse fields of the science. In the first place, is presented the objective and an introduction of each one of the following projects: Study of the uranium migration through the not saturated area, and Synthesis and characterization of phosphate materials by conventional techniques, projects developed under the direction and collaboration of the Ph D. Eduardo Ordonez Regil. Identification of the chemical-morphologic composition of painting mural pigments: the blue Mayan, indigo blue, the secret of the color, and investigation of the physiochemical components of the asphaltenes and malthenes of heavy crudes and vacuum residual, with the supervision of the Ph D. Miguel Jose Yacaman. Evaluation of the water quality and type of sediments of the lake-crater The Pool: one of the seven stars of Santiago Valley, Guanajuato; Study of the sorption kinetics of Cr(Vi) in floor of a container of chromium residuals in Buenavista, Guanajuato, Mexico; Investigation of the underground water hydrochemistry of the basin of the Avenues River in Pachuca de Soto, Hidalgo, and Characterization of the particle material and modeled of the dispersion and pollutants transport in the air of the Metropolitan Area of the Toluca Valley, projects carried out under the direction and collaboration of the Ph D. Lazaro Raymundo Reyes Gutierrez. Finally, is presented the most representative of the obtained results, as well as a discussion of the same ones. (Author)

Estudio y propuestas en materia de prevención de riesgos laborales para el Laboratorio de investigaciones metalográficas y metalotecnia

OpenAIRE

Madrigal Caballo, Samuel

2016-01-01

En este trabajo se estudian y detallan , bajo el punto de vista de los riesgos laborales, los riesgos que suponen para los trabajadores los principales procesos , equipos y máquinas que se emplean en el Laboratorio Oficial de Investigaciones Metalográficas de la ETSI Minas y Energía- UPM (LIMM) ya sean mecánicos, químicos, físicos o eléctricos. Además de los riesgos específicos citados debemos tener en cuenta que el personal del laboratorio también se ve sometido a riesgos por manipulación de...

[Institutional renovation and scientific modernization: the creation of the Instituto de Investigaciones Hematológicas during the mid-1950s].

Science.gov (United States)

Buschini, José

2013-12-01

Using documentary sources, this work analyzes the creation and initial functioning of the Instituto de Investigaciones Hematológicas (Institute of Hematological Research) of the National Academy of Medicine (Buenos Aires, Argentina) in the context of the scientific modernization initiated within the country during the mid-1950s. Particular attention is paid to the generation of material bases and institutional and cultural mechanisms for the development of scientific research and of clinical practices guided by procedures and techniques rooted in the basic sciences. The formation and development of a research school in the Experimental Leukemia Section of the institute is explored as a case illustrative of the effective consolidation of initiatives oriented towards the organization of a scientific center.

Índices parasitarios en larvas, poslarvas y alevinos de Colossoma macropomum (gamitana) en estanques del Instituto de Investigaciones de la Amazonía Peruana

OpenAIRE

Bances Chávez, Karin C.; Universidad Nacional de la Amazonía Peruana; Arbildo Ortiz, Humberto; Universidad Nacional de la Amazonía Peruana; Ruiz Frias, Angel; Universidad Nacional de la Amazonía Peruana; Pizango Paima, Emer Gloria; Universidad Nacional de la Amazonía Peruana; Cubas-Guerra, Rossana; Universidad Nacional de la Amazonía Peruana; del Águila Pizarro, Marina C.; Universidad Nacional de la Amazonía Peruana

2016-01-01

La presente investigación se realizó con la finalidad de determinar los índices parasitarios en larvas, poslarvas y alevinos de C. macropomum (gamitana). Los muestreos se llevaron a cabo de junio a septiembre de 2010 en los estanques del Instituto de Investigaciones de la Amazonía Peruana. Las observaciones parasitológicas se realizaron en 50 larvas y 150 poslarvas de gamitana, con la ayuda del estereoscopio y microscopio, utilizando para tal efecto la técnica de squash; mientras que en alevi...

Site of the First Spanish Nuclear Power Stations; Los Emplazamientos de las Primeras Centrales Nucleares Espanolas

Energy Technology Data Exchange (ETDEWEB)

Pascual, F.; Alonso, A.; Norena, S.; Sevilla, A. [Junta de Energia Nuclear, Madrid (Spain)

1967-09-15

(e), con reactor de agua en ebullicion y contencion por condensacion de vapor, y la central de Vandellos, de 480 MW(e), con reactor grafito-gas y diseno integrado del tipo EDF-4. Los dos primeros estan situados en el interior del pais, el tercero en la costa mediterranea. Se discuten los criterios convencionales y los relacionados con la seguridad, que se han utilizado en la seleccion. Se pone de relieve la influencia de la orografia espanola en el transporte del equipo pesado y su repercusion en la seleccion de emplazamientos para centrales nucleares. Se hace referencia a la experiencia obtenida en el transporte del equipo de la central de Zorita. Se analizan las dificultades practicas encontradas al aplicar unas determinadas normas de seguridad a emplazamientos de centrales de tipo y caracteristicas de diseno diferentes. Ya que el tipo de reactor y su sistema de contencion influyen en el valor practico de la aplicacion de unas determinadas normas que, ademas, han de adaptarse a las caracteristicas peculiares de cada nacion, se indica la conveniencia de utilizar de forma adecuada y flexible las normas de seguridad para el analisis de los emplazamientos de centrales nucleares. Se describen las caracteristicas geologicas y meteorologicas de los tres emplazamientos y se resumen los trabajos e investigaciones realizados en estos campos. En especial, se destacan los estudios de hidrologia realizados en el caso de Zorita y Santa Maria de Garofia, y se describen las estaciones meteorologicas montadas en ambos emplazamientos, los experimentos de difusion con globos equilibrados realizados en el caso de Santa Maria de Garofia y los resultados de estas investigaciones. (author)

Samanlarda Biyolojik Muamelelerle Lignoselüloz Kompleksin Sindirilebilirliğinin Artırılması

Directory of Open Access Journals (Sweden)

Aydan Atalar

2017-12-01

Full Text Available Samanların hücre duvarında bulunan lignoselüloz kompleksin parçalanması ile selüloz ve hemiselüloz gibi rumen fermantasyonuyla sindirilebilir fraksiyonlar elde edilir. Rumende sindirilmeyen ligninin biyoteknolojik metotlarla parçalanarak samandan yararlanılabilirliğin artırılması son yıllarda hayvan beslemecilerin odak noktası olan alanlarından birisi olmuştur. Lignoselüloz kompleksin biyolojik metotlarla muamelesinde bakteriler, mantarlar ve bu mikroorganizmalardan elde edilen enzimler kullanılmaktadır. Bakteri muamelesinde Mycobacterium, Arthrobacter ve Flavobacterium türü bakterilerin lignini parçalayabilme özelliğinden yararlanılmaktadır. Enzim muamelesi etkili olmasına rağmen yüksek maliyet nedeniyle uygulamada yer bulamamıştır. Mantar muamelesinde beyaz, kahverengi ve yumuşak çürüme yapan 3 tür mantar kullanılmaktadır. Kahverengi çürükçül mantarlar tercihen selüloz ve hemiselüloza saldırır, ancak lignini parçalayamaz. Beyaz çürükçül mantarlar lignine saldırarak lignol bağları ve aromatik halkayı parçalarlar. Beyaz çürükçül mantarlar selülaz, ksilanaz gibi hidrolitik enzimlerle polisakkaritleri ve lignin peroksidaz ve lakkaz gibi oksidatif ligninolitik enzimlerle lignini parçalarlar. Lignoselülozik materyalleri en iyi parçalayabilen mikroorganizmaların mantarlar olması ve maliyetin düşük olması nedeniyle özellikle beyaz çürükçül mantarların uygulama potansiyeli bulunmaktadır. Bu bildiride biyoçeşitliliğin sağladığı avantajla biyolojik metotlarla samanların sindirilebilirliğinin artırılması tartışılacaktır.

Ionic interchanges and adsorbents of interest in nuclear and environmental processes; Intercambiadores ionicos y adsorbentes de interes en procesos nucleares y ambientales

Energy Technology Data Exchange (ETDEWEB)

Olguin G, M. T., E-mail: teresa.olguin@inin.gob.m [ININ, Departamento de Quimica, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2010-07-01

The ionic interchanges and the adsorbents are of special interest inside the water treatment processes (industrial or human consumption), as well as for the radionuclides generation, due to their structural characteristics and to their capacity to remove an extensive range of polluting species. In the ININ have been developed researches on these materials, with the purpose of generating new knowledge that serves like base inside radionuclides separation processes or polluted water treatment. The results obtained until the present have been published in different scientific magazines. (Author)

Fault of the correction factor for pressure and temperature k{sub PT} in the atmospheric conditions of Dosimetric Calibration Lab. - LSCD of ININ - Mexico; Falla del factor de correcion por presion y temperatura k{sub PT} a las condiciones atmosfericas del LSCD-ININ-Mexico

Energy Technology Data Exchange (ETDEWEB)

Alvarez R, Jose T.; Jesus Cejudo, A.; La Cruz H., Daniel de; Tovar M, Victor M., E-mail: trinidad.alvarez@inin.gob.mx, E-mail: jesus.cejudo@inin.gob.mx, E-mail: daniel.delacruz@inin.gob.mx, E-mail: victor.tovar@inin.gob.mx [Instituto Nacional de Investigaciones Nucleares (LSCD/ININ), Ocoyoacac (Mexico). Laboratorio Secundario de Calibracion Dosimetrica

2013-07-01

The realization of the operational quantities H*, Hp y/0 H'(0.07) for estimating the effective dose E, usually is done by measuring the air kerma Ka air within the field of ionizing radiation of interest and was subsequently applied appropriate conversion factors for both the quality of radiation and the operational quantity of interest. However, the SSDL in performing the Ka to environmental conditions of ININ (3000 m above sea level, P ∼ 710 hPa) with ionization chambers has found that the pressure correction factor and kPT temperature is not sufficient to correct the change in air density. Indeed, in the case of {sup 60}Co the discrepancy between the measurement of a primary standard graphite walls Ka (BEV CC01 be 131) and a side of the plastic walls (Exradin A12) is on the order of 0.4% for the case of the RX BIPM qualities to 100,135, 180 and 250 kV. It was found that for a camera model 30001 PTW (PMMA graphite wall) is needed an additional correction factor k PT ranging from 0.4% to 1.5%, correction factor calculated by MC simulation. For Sk of {sup 125}I brachytherapy sources was given an additional correction lower in 11% compared to conventional k{sub PT} value measured with a well chamber Standard Imaging HDR 1000 plus. Finally, it is in the process of studying the behavior of this additional correction factor to the case of {sup 137}Cs.

[Instituto de Investigaciones Clinicas "Dr. Américo Negrette": 55 years of excellent research versus global economic recession].

Science.gov (United States)

Valero Cedeño, Nereida Josefina

2014-12-01

The Instituto de Investigaciones Clínicas "Dr. Américo Negrette" belongs to the Faculty of Medicine at University of Zulia in Maracaibo, Zulia State, Venezuela. It was created on December 4, 1959 by Dr. Américo Negrette. Today, with 55 years of existence, the Institute seeks to fulfill the mission that characterizes it, based on the values instilled by its founder and maintained by subsequent generations, whose research projects are implemented through seven research sections: Biochemistry, Hematologic Research, Neuropharmacology and Neuroscience, Immunology and Cell Biology, Clinical Neurochemistry, Parasitology and Virology. The research originated in these laboratories have become national and international points of reference, despite the current economic situation with budget deficits that put at risk the quality and originality of their projects with negative consequences on the productivity and applications for health population, reasons of biomedical research.

L'entonació del pallarès i les preguntes absolutes dels erasmus: dues investigacions en curs

Directory of Open Access Journals (Sweden)

Dolors Font-Rotchés

2014-11-01

Full Text Available Hem realitzat dues investigacions d’anàlisi melòdica: una sobre els trets melòdics bàsics del parlar del pallarès, formada per 96 enunciats de parla espontània emesos per 21 informants de diferents zones del Pallars. S’han obtingut contorns dels 6 primers patrons entonatius descrits en el català, i també diversos trets d’èmfasi bàsics. I, una altra, sobre les preguntes absolutes que fan els estudiants Erasmus. Es basa en 31 preguntes emeses per 15 aprenents de català com a l2. Es constata que aquests gairebé mai no segueixen l'estructura pròpia de les preguntes absolutes del català, la qual cosa explica els malentesos que tenen lloc entre un parlant, que fa una pregunta, i un interlocutor, que la percep com una afirmació i, per consegüent, no respon.

Historia del Instituto de Investigaciones Cardiológicas Alberto C. Taquini en su 60° aniversario History of Instituto de Investigaciones Cardiológicas Alberto C. Taquini in its 60th anniversary

Directory of Open Access Journals (Sweden)

José Milei

2004-04-01

Full Text Available El Instituto de Investigaciones Cardiológicas (ININCA está unido a la figura de quien fuera, desde su fundación, director por más de 50 años: Alberto C. Taquini. Allí se desarrolló (y se desarrolla investigación y docencia. Se estudiaron, desde el inicio, la hipertensión arterial, la hipoxia y las adaptaciones hemodinámicas, la fisiología del riñón y los electrolitos, la pared arterial, el metabolismo cardíaco, la farmacología del miocardio y el papel regulador del sistema nervioso central en la circulación. Se relatan aquí, a través de notas autobiográficas de A.C. Taquini, los experimentos y las discusiones que culminaron con el descubrimiento de la hipertensina, las demostraciones experimentales sobre la renina, que constituyeron objeciones básicas a hipótesis entonces prevalentes, y también algunos juicios y pensamientos expresados por A.C.Taquini sobre el papel y el futuro de la ciencia, en nuestros países y en el primer mundo. Desde 1972 la labor del Instituto se centró casi exclusivamente en la investigación básica y pasó a asociarse al CONICET. Decía Taquini que la investigación científica es algo más que proyectar y producir. Es algo más que una factoría de conocimientos: es crear. El mejor ejemplo de ello son sus contribuciones a la ciencia, las de su grupo y de sus discípulos, y la continuidad del Instituto que sigue hoy en ese camino.The Instituto de Investigaciones Cardiológicas (ININCA was founded by Alberto C. Taquini in 1944 and directed by him during more than 50 years, until his death in 1998. The Institute was (and still is dedicated to research in connection with CONICET (National Research Council and to teaching within the Faculty of Medicine of the University of Buenos Aires. From the very beginning research was centered on hypertension, hypoxia and hemodynamic adaptations, renal physiology and electrolytes, arterial wall, cardiac metabolism, myocardial pharmacology and regulation of the

A utilização do mapeamento cruzado na pesquisa de enfermagem: uma revisão da literatura El uso del mapeo cruzado en las investigaciones de enfermería: una revisión de la literatura The use of cross-mapping in nursing researches: a literature review

Directory of Open Access Journals (Sweden)

Fernanda de Oliveira Lima Nonino

2008-12-01

Full Text Available Trata-se de um estudo de revisão de literatura cujo objetivo foi identificar e analisar a utilização do mapeamento cruzado nas pesquisas em enfermagem. Identificou-se que as pesquisas que utilizaram o mapeamento cruzado na enfermagem possuem relação com a criação dos sistemas de classificação e com a perspectiva do uso da informática nos serviços de saúde. Em relação aos países que realizaram pesquisas utilizando o mapeamento cruzado aparecem os Estados Unidos com 11 estudos, seguido do Brasil com 6 estudos, Holanda com 3 estudos e outros países da Europa e Ásia com 1 estudo cada. O mapeamento cruzado é uma ferramenta útil em estudos sobre linguagens padronizadas em enfermagem e pode favorecer o uso dos sistemas de classificação nos diferentes contextos.Este estudio de revisión de la literatura tiene como objetivo identificar y analizar el mapeo cruzado en investigaciones en enfermería. Se identificó que las investigaciones con mapeo cruzado en enfermería poseen relación con la creación de los sistemas de clasificación y también con la perspectiva del uso de la informática en los servicios de salud. Los países que realizaron investigaciones utilizando el mapeo cruzado son Estados Unidos con 11 investigaciones, Brasil con 6 investigaciones, Holanda con 3 investigaciones y otros países de Europa y Asia con 1 investigación cada uno. El mapeo cruzado es una herramienta usada en estudios sobre los lenguajes estandarizados en enfermería y pueden favorecer el uso de los sistemas de clasificación en los distintos contextos.This literature review aims to identify and to analyze the use of cross mapping in nursing researches. It was identified that researches that used cross mapping in nursing are related to the creation of classification systems and also with the prospect of the use of computers in health services. The United States performed 11 studies using the cross mapping followed by Brazil with 6 studies

Radon detection system, design, test and performance

International Nuclear Information System (INIS)

Balcazar, M.; Chavez, A.; Pina-Villalpando, G.; Navarrete, M.

1999-01-01

A portable radon detection system (α-Inin) has been designed and constructed for using it in adverse environmental conditions where humidity, temperature and chemical vaporous are present. The minimum integration time is in periods of 15 min during 41 days. A 12 V battery and a photovoltaic module allow the α-Inin autonomy in field measurements. Data is collected by means of a laptop computer where data processing and α-Inin programming are carried out. α-Inin performance was simultaneously tested in a controlled radon chamber, together with a commercial α-Meter

Homogeneity and fissure determination in uranium bars with solid state nuclear track detectors

Energy Technology Data Exchange (ETDEWEB)

Castillo, F. (Universidad Nacional Autonoma de Mexico, Mexico City. Facultad de Ciencias); Gamboa, I.; Espinosa, G.; Tapia, A. (Universidad Nacional Autonoma de Mexico, Mexico City. Inst. de Fisica); Somogyi, G. (Magyar Tudomanyos Akademia, Debrecen. Atommag Kutato Intezete)

1984-01-01

A simple and efficient method for determining fissure and concentration inhomogeneity in uranium bars is the alpha-radiographic technique. In our present work uranium bars made by ININ (Mexico) were studied by using CR-39 track detectors. The space inhomogeneity in track density was measured by an optical densitometer. The presence of fissure is determined by a microfiche reader. Such a study takes only few hours and does not require sophisticated instrumentation.

Licensing of the TRIGA Mark III reactor at the Mexican Nuclear Centre

International Nuclear Information System (INIS)

Ramirez, R.M.; Arrendondo, R.R.

1990-01-01

The TRIGA Mark III reactor at the Mexican Nuclear Centre went critical in 1968 and remained so until 1979 when the National Commission for Nuclear Safety and Safeguards (CNSNS), the Mexican regulatory authority, was set up. The reactor was therefore operating without a formal operating license, and the CNSNS accordingly requested the ININ to license the reactor under the existing conditions and to ensure that any modification of the original design complied with Standards ANSI/ANS-15 and with the code of practice set out in IAEA Safety Series No. 35. The most relevant points in granting the operating licence were: (a) the preparation of the Safety Report; (b) the formulation and application of the Quality Assurance Programme; (c) the reconditioning of the following reactor systems: the cooling systems; the ventilation and exhaust system; the monitoring system and control panel; (d) the training of the reactor operating staff at junior and senior levels; and (e) the formulation of procedures and instructions. Once the provisional operating license was obtained for the reactor it was considered necessary to modify the reactor core, which has been composed of 20% enriched standards fuel, to a mixed core based on a mixture of standard fuel and FLIP-type fuel with 70% 235 U enrichment. The CNSNS therefore requested that the mixed core be licensed and a technical report was accordingly annexed to the Safety Report, its contents including the following subjects: (a) neutron analysis of the proposed configuration; (b) reactor shutdown margins; (c) accident analysis; and (d) technical specifications. The licensing process was completed this year and we are now hoping to obtain the final operating license

PROGRAMA DE CALIDAD PARA LAS INVESTIGACIONES BÁSICAS DEL CENTRO DE INMUNOLOGÍA MOLECULAR / PROGRAM OF QUALITY FOR THE BASIC INVESTIGATIONS OF THE CENTER OF MOLECULAR IMMUNOLOGY

Directory of Open Access Journals (Sweden)

Dainerys Infante-Santana

2011-09-01

Full Text Available

El artículo describe el Programa de calidad para las investigaciones del Centro de Inmunología Molecular. Este programa incorpora el cumplimiento de las Buenas Prácticas de Laboratorio con una gestión basada en el comportamiento, el análisis de los riesgos, el enfoque a procesos y la evaluación a través de indicadores. La aplicación del nuevo programa de calidad en el proceso de la actividad científica, permitió disminuir los incumplimientos de las mencionadas prácticas, mejorar los indicadores de productividad científica y lograr una mayor cultura de calidad en el área de investigaciones del Centro de Inmunología Molecular.

Abstract

The paper describes the Program of quality for the investigations of the Center of Molecular Immunology. This program incorporates the execution of the Good Practices of Laboratory with a behaviour-based management, the analysis of the risks, the process approach and the assessment through indicators. The application of the new quality program in the process of the scientific activity, allowed to decrease the nonfulfillments of the above mentioned practices, to improve the scientific productivity indicators and to achieve a greater quality culture in the area of investigations of the Center of Molecular Immunology.

TL Dosimetry on the Tandetron Ion Accelerator area of the ININ; Dosimetria TL en el area del Acelerador de iones Tandetron del ININ

Energy Technology Data Exchange (ETDEWEB)

Valdovinos A, M.A.; Gonzalez M, P.R. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

2000-07-01

For the fulfilment of the operation tests of the Positive Ions type Tandetron 4120 MC, 2 MV, it was obtained the permission consented by the National Commission of Nuclear safety and safeguards (CNSNS). During the stage of tests were arranged Tl dosemeters in the Tandetron Accelerator area, as well as toward to the beam exit. In this work, it was presented the results obtained of the measurement of radiation levels, as much in the area as in the beam exit. This Accelerator is useful in different fields of science such as: biology, radiochemistry, materials, solid state physics, archaeology and environmental sciences between others. (Author)

40 years of solar cell research in the CINVESTAV of the IPN; 40 anos de investigacion de celdas solares en el CINVESTAV del IPN

Energy Technology Data Exchange (ETDEWEB)

Morales Acevedo, Arturo [Centro de Investigaciones y Estudios Avanzados del Instituto Politecnico Nacional, Mexico (Mexico)

2007-06-15

Basically, this presentation describes what the Centro de Investigaciones y de Estudios Avanzados (CINVESTAV) has been working on during this last 40 years, e.g. solar cells. Firstly, it is explained the starting point of the research of solar cells in this institute. Next, it is briefly described the project focused on the factory, which produced 3-inch solar cells, and there are also explained the methodologies that were used in order to produce such sort of cells. In addition, the issues related to photovoltaic systems are explained, among there are found: the characteristics and the first places where they were installed, among others. Next, it is described the program of the PV system installation in the facilities of some child hostel of the Republic of Mexico, carried out with the collaboration of the National Indigenist Institute (INI). Next, it is presented the technology that the CINVESTAV is currently working on, i.e. crystalline silicon solar cells. Besides, it is shown by graphic and illustrative means the process of the same. Finally, it is described the strategic plan suggested in order to produce solar cells in Mexico; besides, there are shown the got conclusions a long with the future expectations. [Spanish] En esta presentacion se describe basicamente todo lo que ha pasado a lo largo de 40 anos en el Centro de Investigaciones y de Estudios Avanzados (CINVESTAV), en relacion a las celdas solares. En primer plano, se describe el punto de inicio de la investigacion de celdas solares en esta institucion. Enseguida, se describe brevemente el proyecto que se realizo sobre la planta piloto fabricante de celdas solares de 3 pulgadas de diametro, tambien se explican las metodologias que se seguian para fabricar dichas celdas. Mas adelante, se explican cuestiones relacionadas con los modulos fotovoltaicos entre las que se encuentran: las caracteristicas y los primeros lugares donde fueron instalados este tipo de sistemas. Enseguida, se describe el programa

Research on heat pumps in Mexico operating with geothermal energy and waste heat; Investigacion sobre bombas de calor en Mexico operando con energia geotermica y calor de desecho

Energy Technology Data Exchange (ETDEWEB)

Garcia-Gutierrez, A; Barragan-Reyes, R.M; Arellano-Gomez, V [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)]. E-mail: aggarcia@iie.org.mx

2008-01-15

The Instituto de Investigaciones Electricas and the Comision Federal de Electricidad have done research and development (R&D) on heat pumps (HP) in past years. Tested systems include mechanical compression, absorption and heat-transformers. The main R&D aspects on HP are briefly described, and also a more detailed description about three of the main studies is presented: (a) a mechanical compression HP of the water-water type operated with low-pressure geothermal steam at the Los Azufres; Mich., geothermal field, and designed for purification of brine; (b) an absorption HP for cooling and refrigeration operating with ammonia-water and low-enthalpy geothermal energy, which was tested in the Los Azufres and Cerro Prieto, BC, geothermal fields; and (c) a heat-transformer by absorption-Absorption Heat Pump Type II-tested to assess the performance of several ternary solutions as work fluids. Plans exist to install and test a geothermal heat pump at Cerro Prieto or Mexicali, BC. [Spanish] El Instituto de Investigaciones Electricas y la Comision Federal de Electricidad han realizado trabajo de investigacion y desarrollo (I&D) sobre bombas de calor (BC) en el pasado. Los sistemas probados incluyen compresion mecanica, absorcion y transformadores termicos. Este trabajo describe brevemente los principales aspectos de I&D sobre bombas de calor en forma general, y se da una descripcion mas detallada de tres de los principales estudios: (a) una BC por compresion mecanica tipo agua-agua disenada para purificacion de salmueras operando con vapor geotermico de baja presion en el campo geotermico de Los Azufres, Mich.; (b) una BC por absorcion para enfriamiento y refrigeracion operando con amoniaco-agua y energia geotermica de baja entalpia, la cual fue probada en los campos geotermicos de Los Azufres y Cerro Prieto, BC; y (c) un transformador termico por absorcion -llamado Bomba de Calor por Absorcion Tipo II--, el cual fue probado para evaluar el comportamiento de diversas

Disponibilidad léxica en español como lengua extranjera: el cotejo de las investigaciones en Eslovenia, Salamanca y Finlandia

Directory of Open Access Journals (Sweden)

Marjana Šifrar Kalan

2009-12-01

Full Text Available La competencia léxica es parte fundamental del conocimiento lingüístico y una herramienta cognitiva que nos permite comunicar en una lengua. El léxico, además de ser una manifestación antropológica, es la parte más inestable e íntima de la lengua que puede variar mucho dependiendo de factores muy variados. Si se trata de una lengua extranjera es necesario saber cuál es el léxico fundamental que nos permite desenvolvernos en las situaciones comunicativas más frecuentes. Algunas investigaciones sobre el vocabulario ya pusieron de manifiesto que, habitualmente, el hombre corriente no emplea más de dos mil palabras; el hombre culto, por su parte, se sirve de unos cuatro o cinco mil vocablos (ver Carcedo González, 2000: 11; Nation, 1990: 11, 2001: 9. Benítez Pérez (1994a: 10 señala que «según los estudiosos de frecuencias léxicas, las primeras 1000 palabras más usadas en español abarcan cerca del 85% del contenido del léxico de cualquier texto no especializado». Cabría añadir lo que ya han demostrado otras investigaciones realizadas sobre lenguas tan lejanas como el chino, el japonés, el francés, y es el hecho de que exista una constante entre muchas lenguas del mundo cuyo vocabulario fundamental varía de 1500 a 2000 palabras sin pasar nunca de esta cifra. De aquí la importancia de escoger cuidadosamente el vocabulario fundamental que debemos enseñar. Según López Morales (1999: 20 el léxico fundamental de una lengua está formado por el léxico básico y el léxico disponible. El léxico básico abarca las palabras más usuales o frecuentes de una comunidad, que se caracterizan por un alto grado de estabilidad o permanencia. Esto les permite que aparezcan con mucha frecuencia en todo tipo de discursos con independencia del tema tratado. En cambio, el léxico disponible está compuesto por aquellas palabras que sólo aparecen en situaciones precisas, es decir, cuando el tema de conversación las requiere. De este modo

Research reactor fuel bundle design review by means of hydrodynamic testing; Ensayos hidrodinamicos para verificacion de diseno de un elemento combustible para reactores de investigacion

Energy Technology Data Exchange (ETDEWEB)

Pastorini, A; Belinco, C [Comision Nacional de Energia Atomica, San Martin (Argentina). Centro Atomico Constituyentes

1998-12-31

During the design steps of a fuel bundle for a nuclear reactor, some vibration tests are usually necessary to verify the prototype dynamical response characteristics and the structural integrity. To perform these tests, the known hydrodynamic loop facilities are used to evaluate the vibrational response of the bundle under the different flow conditions that may appear in the reactor. This paper describes the tests performed on a 19 plate fuel bundle prototype designed for a low power research reactor. The tests were done in order to know the dynamical characteristics of the plates and also of the whole bundle under different flow rate conditions. The paper includes a description of the test facilities and the results obtained during the dynamical characterization tests and some preliminary comments about the tests under flowing water are also presented. (author) 4 refs., 12 figs., 4 tabs. [Espanol] Durante el diseno de un elemento combustible para un reactor nuclear se requiere de la realizacion de ensayos con el objeto de verificar el comportamiento de ese diseno y permitir, de ser necesario, la introduccion de modificaciones al mismo. Para verificar las caracteristicas de respuesta dinamica e integridad estructural, se realizan ensayos de vibraciones que incluyen someter al prototipo a condiciones de circulacion del fluido similares a las que soportara durante la operacion del reactor. Estos ensayos se realizan en facilidades de ensayos conocidas como circuitos hidrodinamicos, que permiten no solo someter el prototipo al flujo de fluido, sino tambien obtener una adecuada caracterizacion de la respuesta del mismo a traves del luso de sensores de distinto tipo. En este trabajo se describen los ensayos realizados sobre un prototipo de elemento combustible de 19 placas destinado a un reactor de investigacion multiproposito de baja potencia. Los ensayos tuvieron como objetivo conocer la respuesta dinamica de las placas individuales y del elemento combustible en su

Amnion s and radio-sterilized porcine skin use as potential matrices for the development of human skin substitutes; Uso de amnios y piel porcina radioesterilizados como matrices potenciales para el desarrollo de sustitutos de piel humana

Energy Technology Data Exchange (ETDEWEB)

Martinez P, M. E.; Reyes F, M. L.; Reboyo B, D. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Velasquillo M, M. C.; Sanchez S, R.; Brena M, A. M.; Ibarra P, J. C., E-mail: esther.martinez@inin.gob.mx [Instituto Nacional de Rehabilitacion, Calz. Mexico-Xochimilco No. 289, Col. Arenal de Guadalupe, 14389 Mexico D. F. (Mexico)

2014-10-15

The injuries by burns constitute a primordial problem of public health; they cause a high mortality index, severe physical and psychological disability, etc. The autologous skin transplant is the replacement therapy recommended for its treatment, but in patients that present a high percentage of burnt skin; this is not possible to carry out. Another strategy is the transplant of donated skin; however, due to the little donation that exists in our country is not very feasible to apply this treatment. A challenge of the tissues engineering is to develop biological skin substitutes, based on cells and amnion s, favoring the cutaneous regeneration and quick repair of injuries, diminishing this way the hospitalization expenses. At present skin substitutes that can equal to the same skin do not exist. On the other hand, the mesenchymal stromal cells (Msc) represent an alternative to achieve this objective; since has been demonstrated that the Msc participate in the tissue repair by means of inhibition of pro-inflammatory cytokines and differentiation to dermal fibroblasts and keratinocytes. To apply the Msc in cutaneous injuries a support material is required that to allow transplanting these cells to a lesion or burn. The radio-sterilized human amnion and the radio-sterilized porcine skin, processed by the Radio-Sterilized Tissues Bank of the Instituto Nacional de Investigaciones Nucleares (ININ), are biomaterials that are used as temporary cutaneous coverings. We suppose that these two matrices will be appropriate for the growth and maintenance in cultivation of the Msc, to generate two biological skin substitutes, in collaboration with the Biotechnology Laboratory of the Instituto Nacional de Rehabilitacion. (Author)

Amnion s and radio-sterilized porcine skin use as potential matrices for the development of human skin substitutes

International Nuclear Information System (INIS)

Martinez P, M. E.; Reyes F, M. L.; Reboyo B, D.; Velasquillo M, M. C.; Sanchez S, R.; Brena M, A. M.; Ibarra P, J. C.

2014-10-01

The injuries by burns constitute a primordial problem of public health; they cause a high mortality index, severe physical and psychological disability, etc. The autologous skin transplant is the replacement therapy recommended for its treatment, but in patients that present a high percentage of burnt skin; this is not possible to carry out. Another strategy is the transplant of donated skin; however, due to the little donation that exists in our country is not very feasible to apply this treatment. A challenge of the tissues engineering is to develop biological skin substitutes, based on cells and amnion s, favoring the cutaneous regeneration and quick repair of injuries, diminishing this way the hospitalization expenses. At present skin substitutes that can equal to the same skin do not exist. On the other hand, the mesenchymal stromal cells (Msc) represent an alternative to achieve this objective; since has been demonstrated that the Msc participate in the tissue repair by means of inhibition of pro-inflammatory cytokines and differentiation to dermal fibroblasts and keratinocytes. To apply the Msc in cutaneous injuries a support material is required that to allow transplanting these cells to a lesion or burn. The radio-sterilized human amnion and the radio-sterilized porcine skin, processed by the Radio-Sterilized Tissues Bank of the Instituto Nacional de Investigaciones Nucleares (ININ), are biomaterials that are used as temporary cutaneous coverings. We suppose that these two matrices will be appropriate for the growth and maintenance in cultivation of the Msc, to generate two biological skin substitutes, in collaboration with the Biotechnology Laboratory of the Instituto Nacional de Rehabilitacion. (Author)

Ionic interchanges and adsorbents of interest in nuclear and environmental processes

International Nuclear Information System (INIS)

Olguin G, M. T.

2010-01-01

The ionic interchanges and the adsorbents are of special interest inside the water treatment processes (industrial or human consumption), as well as for the radionuclides generation, due to their structural characteristics and to their capacity to remove an extensive range of polluting species. In the ININ have been developed researches on these materials, with the purpose of generating new knowledge that serves like base inside radionuclides separation processes or polluted water treatment. The results obtained until the present have been published in different scientific magazines. (Author)

Oportunidades y Retos Metodológicos en Investigaciones de Salud en el Contexto Carcelario de Puerto Rico

Science.gov (United States)

Previdi, Irene Lafarga; Guzzi Vasques, Ana C.; Varas-Díaz, Nelson; Albizu García, Carmen E.

2017-01-01

Resumen La población carcelaria de Puerto Rico en 2013 se compone de aproximadamente 13,000 personas. En la literatura no se encuentran documentos que describan los facilitadores y las limitaciones para realizar estudios relacionados con la salud mental en las cárceles. El artículo es una reflexión en torno a situaciones que facilitan o retan la investigación en cárceles según identificaron los/las miembros del equipo de investigación de un proyecto cuyo objetivo era validar una escala para medir estrés en los confinados. En este artículo presentamos elementos facilitadores y retantes del trabajo investigativo en prisión, que sirven para afrontar los retos que presenta este escenario particular. Estas verbalizaciones pueden servir de guía para futuras investigaciones con la población penal. Los hallazgos y recomendaciones preparan al grupo de investigación para afrontar los retos que presenta este escenario particular y a saber cómo maximizar los facilitadores para obtener productos satisfactorios. PMID:28316510

Çoruh Havzası Rehabilitasyon Projesi kapsamında Hisar (Oltu) Orman İşletme Şefliğinin amenajman ve silvikültür planlarının değerlendirilmesi

OpenAIRE

Narşap, Tuba

2015-01-01

Bu araştırma, Çoruh Nehri Havzası Rehabilitasyon Projesi Kapsamında Hisar (Oltu) Orman İşletme Şefliğinin yenilenen Amenajman ve Silvikültür Planlarının değerlendirilmesi amacıyla yapılmıştır. İlk önce Türkiye'deki beş yıllık kalkınma planları ile birlikte ormancılık sektöründeki planlama mantığı araştırılmış, süreç içerisindeki gelişmeler ortaya konulmuştur. Amenajman planları ve silvikültür planlarındaki iş ve işlemler Hisar Orman İşletme Şefliğindeki uygulamalar dikkate alınarak değerlendi...

Fault of the correction factor for pressure and temperature kPT in the atmospheric conditions of Dosimetric Calibration Lab. - LSCD of ININ - Mexico

International Nuclear Information System (INIS)

Alvarez R, Jose T.; Jesus Cejudo, A.; La Cruz H., Daniel de; Tovar M, Victor M.

2013-01-01

The realization of the operational quantities H*, Hp y/0 H'(0.07) for estimating the effective dose E, usually is done by measuring the air kerma Ka air within the field of ionizing radiation of interest and was subsequently applied appropriate conversion factors for both the quality of radiation and the operational quantity of interest. However, the SSDL in performing the Ka to environmental conditions of ININ (3000 m above sea level, P ∼ 710 hPa) with ionization chambers has found that the pressure correction factor and kPT temperature is not sufficient to correct the change in air density. Indeed, in the case of 60 Co the discrepancy between the measurement of a primary standard graphite walls Ka (BEV CC01 be 131) and a side of the plastic walls (Exradin A12) is on the order of 0.4% for the case of the RX BIPM qualities to 100,135, 180 and 250 kV. It was found that for a camera model 30001 PTW (PMMA graphite wall) is needed an additional correction factor k PT ranging from 0.4% to 1.5%, correction factor calculated by MC simulation. For Sk of 125 I brachytherapy sources was given an additional correction lower in 11% compared to conventional k PT value measured with a well chamber Standard Imaging HDR 1000 plus. Finally, it is in the process of studying the behavior of this additional correction factor to the case of 137 Cs

[The work of Santiago Ramón y Cajal in the Revista Trimestral Micrográfica (Trabajos del Laboratorio de Investigaciones Biológicas)].

Science.gov (United States)

Gamundí, A; Timoner, G; Nicolau, M C; Rial, R V; Esteban, S; Langa, M A

This paper is based on a study of Revista Trimestral Micrografica (Trabajos del Laboratorio de Investigaciones Biologicas) between its creation by Santiago Ramon y Cajal in 1896 and his death in 1934. The journal Revista Trimestral Micrografica was the main way in which Santiago Ramon y Cajal and his school published their work since its creation. Ramon y Cajal created the journal for two main reasons: first, he needed a rapid system to publish his own work; second, the journal could serve to encourage his pupils. The journal published many important reports defending the neuronal theory which expanded the cellular one to include the nervous system.

Optimization of the production process of hybrid and multivalent formulation Bombesin/RGD for the opportune detection of breast cancer; Optimizacion del proceso de fabricacion de la formulacion hibrida y multivalente Bombesina/RGD para la deteccion oportuna de cancer de mama

Energy Technology Data Exchange (ETDEWEB)

Robles M, M.

2013-07-01

The radiopharmaceuticals of third generation are used in nuclear medicine to obtain images of specific molecular targets, and they are unique in their capacity to detect in vivo specific biochemical sites as receptors that are over-expressed in diverse illness. In cancer cells several types of receptors are over-expressed, as the integrin s α(v)β(3) and α(v)β(5) that specifically recognize the sequence RGD (Arginine-Glycin-Ac. Aspartic) and gastrin-releasing peptide that recognizes specifically to the peptide Lys{sup 3}-Bombesin. The integrin s α(v)β(3) and α(v)β(5) are involved in the tumor angio genesis processes and the gastrin-releasing peptide is over-expressed in breast and prostate cancer. The molecular recognition of the specific receptors is the basis to be utilized as targets of the radiopharmaceuticals {sup 99m}Tc-HYNIC-Bombesin and {sup 99m}Tc-HYNIC-RGD. In this work was developed a lyophilized pharmaceutical formulation effective, stable and safe for the simultaneous obtaining of the radiopharmaceuticals {sup 99m}Tc-HYNIC-Bombesin ({sup 99m}Tc-EDDA/HYNIC-Lys{sup 3}-Bombesin) and {sup 99m}Tc-HYNIC-RGD ({sup 99m}Tc EDDA/HYNIC-E-[c(RGDfK)]{sub 2}). Later on the production process of the product HYNIC-Bombesin/RGD-Sn was optimized using a factorial design and the formulation was transferred to the production plant of radiopharmaceuticals of the Instituto Nacional de Investigaciones Nucleares (ININ). The optimized formulation is described in the following chart: HYNIC-[Lys{sup 3}]-Bombesin - 12.5 μg; HYNIC-E-c[RGDfK]{sub 2} - 12.5 μg; Stannous chloride (SnCl{sub 2}) - 20 μg; Ethylenediamine diacetic acid (EDDA) - 10 mg; N-tris(hydroxymethyl)methyl glycin (Tricine) - 20 mg; Mannitol - 50 mg. The production process was validated and were carried out the stability studies under refrigeration conditions. (Author)

Development of a methodology for the determination of radionuclides by Icp-SFMS; Desarrollo de una metodologia para la determinacion de radionuclidos en aerosoles por ICP-SFMS

Energy Technology Data Exchange (ETDEWEB)

Mendez G, C. G.; Romero G, E. T.; Hernandez M, H. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Solis R, C.; Chavez L, E. R., E-mail: griselmendez@fisica.unam.mx [UNAM, Instituto de Fisica, Ciudad Universitaria, 04510 Ciudad de Mexico (Mexico)

2016-09-15

A methodology was established for the determination of {sup 75}As, {sup 202}Hg, {sup 208}Pb, {sup 60}Ni, {sup 232}Th, {sup 234}U, {sup 235}U, {sup 238}U, by magnetic field inductive coupling mass spectrometry (Icp-SFMS) of various samples at the National Laboratory of Nuclear Forensic Research of the Instituto Nacional de Investigaciones Nucleares (ININ) in order to determine radionuclides in aerosol samples. The concentrations calculation of {sup 75}As, {sup 202}Hg, {sup 208}Pb and {sup 60}Ni allowed to validate the reliability of the proposed methodology when comparing the concentrations obtained with the application of the same and the concentrations of the same elements reported for the Certified Reference Material (CRM) of particulate atmospheric material of an urban area (Nist 1648-a), the comparison showed that the proposed methodology is feasible for the determination of not only radionuclides, but also for these trace elements. Detection and quantification limits of the order of microns of ng L{sup -1} were reached, corroborating with this the acceptance of the proposed methodology. Concentrations of the radionuclides of interest for CRM could be calculated. The concentrations of the radionuclides found in white samples and of the reagents used in the processing of the aerosol filters indicated that the calculations found belong to or correspond to the calculations that are reflected in the background measurement. Concentrations of {sup 232}Th, {sup 234}U, {sup 235}U and {sup 238}U in aerosols of the Cuernavaca City, Morelos (Mexico) showed higher values than those established by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), however the concentration of the radioisotopes per unit volume are within the typical values reported for the northern hemisphere; the value of isotopic ratios greater than unity point to the influence of anthropogenic activities or environmental factors such as the direction of the wind or the

Development of a methodology for the determination of radionuclides by Icp-SFMS

International Nuclear Information System (INIS)

Mendez G, C. G.; Romero G, E. T.; Hernandez M, H.; Solis R, C.; Chavez L, E. R.

2016-09-01

A methodology was established for the determination of "7"5As, "2"0"2Hg, "2"0"8Pb, "6"0Ni, "2"3"2Th, "2"3"4U, "2"3"5U, "2"3"8U, by magnetic field inductive coupling mass spectrometry (Icp-SFMS) of various samples at the National Laboratory of Nuclear Forensic Research of the Instituto Nacional de Investigaciones Nucleares (ININ) in order to determine radionuclides in aerosol samples. The concentrations calculation of "7"5As, "2"0"2Hg, "2"0"8Pb and "6"0Ni allowed to validate the reliability of the proposed methodology when comparing the concentrations obtained with the application of the same and the concentrations of the same elements reported for the Certified Reference Material (CRM) of particulate atmospheric material of an urban area (Nist 1648-a), the comparison showed that the proposed methodology is feasible for the determination of not only radionuclides, but also for these trace elements. Detection and quantification limits of the order of microns of ng L"-"1 were reached, corroborating with this the acceptance of the proposed methodology. Concentrations of the radionuclides of interest for CRM could be calculated. The concentrations of the radionuclides found in white samples and of the reagents used in the processing of the aerosol filters indicated that the calculations found belong to or correspond to the calculations that are reflected in the background measurement. Concentrations of "2"3"2Th, "2"3"4U, "2"3"5U and "2"3"8U in aerosols of the Cuernavaca City, Morelos (Mexico) showed higher values than those established by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), however the concentration of the radioisotopes per unit volume are within the typical values reported for the northern hemisphere; the value of isotopic ratios greater than unity point to the influence of anthropogenic activities or environmental factors such as the direction of the wind or the imbalance of these radionuclides in the atmosphere

Research and technological development on heat pumps in Mexico operating with geothermal energy; Investigacion y desarrollo tecnologico sobre bombas de calor en Mexico operando con energia geotermica

Energy Technology Data Exchange (ETDEWEB)

Garcia Gutierrez, Alfonso; Barragan Reyes, Rosa Maria; Arellano Gomez, Victor Manuel [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2008-07-01

The Instituto de Investigaciones Electricas (IIE) and the Comision Federal de Electricidad (CFE) carried out in the past an extensive work of research and development (R&D) on heat pumps (HP). The systems tried on include heat pumps by mechanical compression, thermal absorption and thermal transformers. This paper briefly describes the main aspects of R&D on heat pumps and presents a more detailed description of three of the main studies: a) a Heat Pump (HP) by mechanical compression water-water type, designed for brine purification, operating with low pressure geothermal steam at the geothermal field Los Azufres, Michoacan, Mexico; b) a HP by absorption for cooling and refrigeration, operating with ammoniac/water and low enthalpy geothermal energy, which was tested in the geothermal fields of Los Azufres, Michoacan and Cerro Prieto, Baja California, and c) a thermal transformer by absorption, named Heat Pump by Absorption Type 2, which was tested to evaluate the behavior of diverse ternary solutions as working fluids. To date, there are plans to install and test a geothermal heat pump (connected to the subsoil), in Cerro Prieto, Mexicali, Baja California, Mexico. [Spanish] El Instituto de Investigaciones Electricas (IIE) y la Comision Federal de Electricidad (CFE) realizaron un trabajo extenso de investigacion y desarrollo (I&D) sobre bombas de calor (BC) en el pasado. Los sistemas que se probaron incluyen bombas de calor por compresion mecanica, absorcion y transformadores termicos. Este trabajo describe brevemente los principales aspectos de I&D sobre bombas de calor y se da una descripcion mas detallada de tres de los principales estudios: a) una Bomba de Calor (BC) por compresion mecanica tipo agua-agua, disenada para purificacion de salmueras, operando con vapor geotermico de baja presion en el campo geotermico de Los Azufres, Michoacan; b) una BC por absorcion para enfriamiento y refrigeracion, operando con amoniaco/agua y energia geotermica de baja entalpia

Report on the Fourth Reactor Refueling. Laguna Verde Nuclear Central. Unit 1. April-May 1995; Informe de la Cuarta Recarga de Combustible. Central Laguna Verde. Unidad 1. Abril-Mayo 1995

Energy Technology Data Exchange (ETDEWEB)

Mendoza L, A; Flores C, E; Lopez G, C P.F.

1996-12-31

The fourth refueling of the Unit 1 of Laguna Verde Nuclear Central was executed in the period of April 17 to May 31 of 1995 with the participation of a task group of 358 persons, included technicians and radiation protection officials and auxiliaries.The radiation monitoring and radiological surveillance to the workers was present length ways the refueling process and always attached to the ALARA criteria. The check points for radiation levels were set at: primary container or dry well, reloading floor, decontamination room (level 10.5), turbine building and radioactive waste building. To take advantage of the refueling process, rooms 203 and 213 of the turbine buildings were subject to inspection and maintenance work in valves, heaters and drains of heaters. Management aspects as personnel selection and training, costs, and countable are also presented in this report. Owing to the high cost of man-hour of the members of the ININ staff, its participation in the refueling process was in smaller number than years before. (Author).

HIV/AIDS research priorities among aboriginal people in Canada Investigaciones de prioridad sobre el VIH y el sida en los grupos aborígenes del Canadá

Directory of Open Access Journals (Sweden)

1999-03-01

Full Text Available Aunque el número de casos de sida se ha nivelado en el Canadá en el último decenio, muchos factores indican que la enfermedad ha seguido teniendo un impacto creciente en las poblaciones aborígenes del país. Para hacer frente a la si tua ción y adjudicar más adecuadamente los futuros gastos en investigación, el sistema federal Health Canada publicó un informe en septiembre de 1998 en el que se detallan los conocimientos actuales sobre la situación del VIH y sida en los aborígenes del Canadá, lo que aún se des conoce y la orien tación que deben tener las investigaciones realizadas de ahora en adelante. Se hizo una revisión de la literatura en MEDLINE y otras bases de datos bibliográficas, se revisa ron los informes de reuniones y simposios y se preguntó a los investigadores el estado de aquellos proyectos que aún no habían acabado o publicado. La información así obtenida se organizó en tres secciones: la carga de VIH y sida, los factores determinantes y de riesgo y las intervenciones. El do cu ment o está destinado a ser un trabajo en continuo desa rro llo y se actualizará periódicamente para que abarque los resultados de investigaciones adicionales.

Self-assessment of application of the Code of Conduct on the safety of research reactors - Mexico

International Nuclear Information System (INIS)

Mamani-Alegria, Y.R.; Salgado-Gonzalez, J.R.; Miranda-Aldaco, J.

2009-01-01

In Mexico, the nuclear regulatory body is the National Commission on Nuclear Safety and Safeguards (CNSNS), and there is one research reactor, a TRIGA MARK III, operated by the National Institute for Nuclear Research (ININ). The main aspects of the Self-assessment of application of The Code of Conduct on the Safety of Research Reactor are given for the case of the TRIGA reactor. Furthermore, in this paper we give a brief description of the legal framework of the licensing process, for nuclear activities in a research reactor, there are also highlights of the major reactor features, the uses of the reactor for isotope production, the management and verification of safety, the radiation protection management program, the emergency planning and the training and qualification of the operation personnel. (author)

VIOLENCIA DE GÉNERO EN LAS UNIVERSIDADES: INVESTIGACIONES Y MEDIDAS PARA PREVENIRLA

Directory of Open Access Journals (Sweden)

Rosa Larena

2010-12-01

Full Text Available Normal 0 21 false false false ES ZH-TW X-NONE MicrosoftInternetExplorer4 En este artículo recogemos los resultados de la investigación “Violencia de género en las universidades españolas”, la primera investigación que analiza la violencia de género en el contexto universitario en España. Las investigaciones sobre esta clase de violencia en el ámbito internacional muestran, por un lado, que es una realidad existente en la universidad, de la misma forma que lo es en otros ámbitos sociales. Por otro lado, el análisis de las actuaciones implementadas por universidades de prestigio muestra la existencia de diferentes medidas para prevenirla y superarla. Estas evidencias, contrastadas con las percepciones de diferentes colectivos de la comunidad universitaria sobre la aplicabilidad de estas medidas en las universidades españolas, son el punto de partida para iniciar el desarrollo de medidas que erradiquen la violencia de género en nuestras universidades. In this article we present the findings from the research “Gender violence in Spanish universities”, the first study that analyses gender violence in the university context in Spain. Studies on gender violence at the international level show, on the one hand, that gender violence is a reality that exists in universities, in the same way that it exists in other social contexts. On the other hand, the analysis of the actions implemented in prestigious universities shows the existence of measures to prevent and overcome it. Contrasting these evidences with the perceptions of different university collectives about the applicability of these measures in Spanish universities is the starting point to develop measures to eradicate gender violence in our universities.

Centro de Investigacion en Ciencias Atomicas, Nucleares y Moleculares CICANUM

International Nuclear Information System (INIS)

Loria Meneses, Luis Guillermo

2011-01-01

The CICANUM has maintained research projects, one of which is Radioactive contamination of food and health implications; seeks to conduct radiation monitoring of food for human consumption. The techniques of gamma and alpha spectroscopy have used and have allowed to quantify isotopes adverse health [es

Research and development of hydrogen and fuel cells technology at the IIE; Investigacion y desarrollo de tecnologia de hidrogeno y celdas de combustible en el IIE

Energy Technology Data Exchange (ETDEWEB)

Cano C, Ulises; Arriaga H, Gerardo; Romero C, T; Medrano V, M. Consolacion; Gonzalez, A. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2005-07-01

In April, 2001, a fuel cells project was initiated at the Instituto de Investigaciones Electricas (IIE) as a part of the interest of this institution for such a technology. Towards end of that same year, a group dedicated to research and development (R and D) activities was implemented and efforts were initiated for the assembly of a laboratory with specialized infrastructure that would support these activities. Thus, in the last two years, the hydrogen and fuel cells group has taken under its responsibility the task of renewing and conditioning a space to receive specialized instrumentation and to initiate its operation, as well as to develop its own knowledge on the technology of fuel cells. The R and D work related to fuel cells was initiated from basic electrochemical studies of platinum electrodes on vitreous coal in acid solutions, to determine kinetic parameters and structural properties. Since the main components of PEM cells to a great extent define the cost of the technology, other additional efforts related to basic studies for the development of components as bipolar plates, are described by the same author in 2001. Other work on basic research is bound to the response of fuel monocells under different operation conditions, and that also will be reviewed in this article. [Spanish] En abril del 2001, se inicio un proyecto de celdas de combustible en el IIE como parte del interes de esta institucion por tal tecnologia. Hacia finales de ese mismo ano, se conformo un grupo dedicado a actividades de investigacion y desarrollo (I y D) y se iniciaron esfuerzos para el montaje de un laboratorio con infraestructura especializada que apoyara estas actividades. Asi, en los ultimos dos anos, el grupo de hidrogeno y celdas de combustible se ha dado a la tarea de renovar y acondicionar un espacio para recibir instrumentacion especializada e iniciar su operacion, asi como a desarrollar su propio conocimiento de tecnologia de celdas de combustible. Los trabajos de I y

Event management in research reactors; Gestion de eventos en reactores de investigacion

Energy Technology Data Exchange (ETDEWEB)

Perrin, C D [Coordinador Reactores de Investigacion y Conjuntos Criticos, Autoridad Regulatoria Nuclear (Argentina)

2006-07-01

In the Radiological and Nuclear Safety field, the Nuclear Regulatory Authority of Argentina controls the activities of three investigation reactors and three critical groups, by means of evaluations, audits and inspections, in order to assure the execution of the requirements settled down in the Licenses of the facilities, in the regulatory standards and in the documentation of mandatory character in general. In this work one of the key strategies developed by the ARN to promote an appropriate level of radiological and nuclear safety, based on the control of the administration of the abnormal events that its could happen in the facilities is described. The established specific regulatory requirements in this respect and the activities developed in the entities operators are presented. (Author)

Calibration curve to establish the exposure dose at Co{sup 60} gamma radiation; Curva de calibracion para establecer dosis de exposicion a radiacion gamma de Co{sup 60}

Energy Technology Data Exchange (ETDEWEB)

Guerrero C, C; Brena V, M [Departamento de Biologia, Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, Mexico D.F. (Mexico)

2000-07-01

The biological dosimetry is an adequate method for the dose determination in cases of overexposure to ionizing radiation or doubt of the dose obtained by physical methods. It is based in the aberrations analysis produced in the chromosomes. The behavior of leisure in chromosomes is of dose-response type and it has been generated curves in distinct laboratories. Next is presented the curve for gamma radiation produced in the National Institute of Nuclear Research (ININ) laboratory. (Author)

Calibration curve to establish the exposure dose at Co60 gamma radiation

International Nuclear Information System (INIS)

Guerrero C, C.; Brena V, M.

2000-01-01

The biological dosimetry is an adequate method for the dose determination in cases of overexposure to ionizing radiation or doubt of the dose obtained by physical methods. It is based in the aberrations analysis produced in the chromosomes. The behavior of leisure in chromosomes is of dose-response type and it has been generated curves in distinct laboratories. Next is presented the curve for gamma radiation produced in the National Institute of Nuclear Research (ININ) laboratory. (Author)

Satış personeline yönelik performans değerlendirme ölçeğinin geliştirilmesi ve psikometrik özelliklerinin incelenmesi [The study of the development of performance evaluation scale and psychometric qualities research towards sales personnel

Directory of Open Access Journals (Sweden)

Şule AKALIN

2014-10-01

Full Text Available Bu araştırmanın amacı, mağazalarda çalışan satış personelinin iş performansını ölçmede kullanılabilecek performans değerlendirme ölçeğinin geliştirilmesi ve geliştirilen ölçeğin psikometrik özelliklerinin incelenmesidir. Araştırmanın çalışma grubunu 200 satış personeli oluşturmaktadır. Ölçeğin yapı geçerliği için açımlayıcı faktör analizi yapılmıştır. Açımlayıcı faktör analizi sonucuna göre ölçek, “Satışa Yönelik Bilgi, Beceri ve Kişisel Özellikler” ve “İş Yerine Uyum Özellikleri” olmak üzere iki alt boyuttan ve 31 maddeden oluşmaktadır. Ölçeğin Cronbach Alfa güvenirlik katsayısı .96, test tekrar test güvenirlik katsayısı ise .88 bulunmuştur. İki faktör tarafından açıklanan toplam varyans % 50.36’dır. Ölçek ve alt boyutlarının Cronbach Alfa ve test tekrar test güvenirliklerine bakılmış ve ilk analizde bulunan değerlerle aralarında manidar bir değişiklik görülmemiştir. Bu bulgulara dayanarak, geliştirilen performans değerlendirme ölçeğinin; satış personelinin performansını ölçmede kullanılabilecek geçerli ve güvenilir bir psikometrik araç olduğu sunucuna ulaşılmıştır.

Estación de investigaciones integrales de la montaña: quince años de Ciencia en el Plan Turquino

Directory of Open Access Journals (Sweden)

Félix A. Cabrera Martínez

2005-01-01

Full Text Available Se realiza una caracterización de las etapas por las que ha transitado la estación durante más de 15 años de llevar a cabo investigaciones y servicios científico- técnicos en las montañas de la provincia Holguín. Se exponen las principales debilidades y fortalezas, y se destaca sobre todo la escasa salida de los resultados en publicaciones científicas y la necesidad de analizar estos a la luz de la producción teórica más avanzada. Por último, se enfatiza en lo impostergable de encontrar un modelo de gestión científica y tecnológica que introduzca de manera más efectiva los resultados de investigación en la praxis social.

Vision of the Training Department of the National Institute of Nuclear Research; Vision del Departamento de Capacitacion del Instituto Nacional de Investigaciones Nucleares

Energy Technology Data Exchange (ETDEWEB)

Dominguez A, C. E. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2008-12-15

The availability of skilled personnel is an essential element of the national infrastructure, to ensure the safety and security through the strong principles of management and good technology, quality assurance, training and qualification of new personnel, thorough safety evaluations and building on lessons of experience and research. In the national case the General Regulation of Radiation Safety requires that the Radiation Safety Responsible (RSR) must be experienced in issues of radiation safety of the facility in which employed. As experience has been found by chance that some people who have attended courses offered by the National Institute of Nuclear Research and have not achieved a result approval, obtain approval at the respective courses offered by other entities, which may have a potential dilemma (not at all cases since then), in the sense that the aspiration to become experts in the safety basic standards, can be addressed only after ensuring that there is an acceptance at the level of the course and evaluation ways of the present courses to RSR. Viewed another way, one can consider the formation of RSR experience in planning for better training of experts in the safety basic standards. It happens that the courses offered to RSR some of them do not cover the requirements of time, content and practices established in the regulations. The Mexican Society of Radiological Safety can affect as a partner to improve the courses quality. (Author)

The transplantation donation process in the Centro de Investigaciones Medico Quirurgicas of Cuba: 1999-2002.

Science.gov (United States)

Abdo, A; Ugarte, J C; Castellanos, R; González, L; López, O; Hernández, J C; Valdivia, J; Almora, E; Suárez, O; Diaz, J; Collera, S; Enamorado, A; Vázquez, A; Beníte, P; Dominguez, J; Wilford, M; Falcon, J

2003-08-01

In 1998 in the Centro de Investigaciones Medico Quirurgicas the Transplant Coordination Office (TCO) was created, with the aim to organize a system to support a hepatic transplantation program. This organization, which changed the transplantation-donation process not only in our center but in the whole country, is described in this article. The files of donors generated in our hospital were studied together with the transplant coordination records, from 1999 till the first half of 2002. In the period studied, 21 potential donors were diagnosed with brain death, yielding a donation rate of 71.4%. Brain death was most frequently caused by vascular brain disease; however, in the realized donor group, the cranioencephalic trauma predominated. The typical donor was a man of average age 39.2 years (range, 18-86 years). Among the potential donors, 24% were excluded based on medical criteria, and 5% due to family objections. Forty liver transplantation were performed in 36 patients including 1 liver-kidney simultaneous procedure. The principal etiologies for transplant included hepatitis C virus cirrhosis, 22%; alcoholic, 19%; and acute hepatic failure, 13%. Kidney transplantations were performed in 70 patients, including 41 from cadaveric donors (53.6%) and 29 from living related donors (41.4%). In 2001, a pancreas-kidney transplantation program was started. The creation of the TCO has been of paramount importance to optimize transplantation program functions.

Calculations on heavy-water moderated and cooled natural uranium fuelled power reactors

International Nuclear Information System (INIS)

Pinedo V, J.L.

1979-01-01

One of the codes that the Instituto Nacional de Investigaciones Nucleares (Mexico) has for the nuclear reactors design calculations is the LEOPARD code. This work studies the reliability of this code in reactors design calculations which component materials are the same of the heavy water moderated and cooled, natural uranium fuelled power reactors. (author)

[History of Instituto de Investigaciones Cardiológicas Alberto C. Taquini in its 60th anniversary].

Science.gov (United States)

Milei, Jose; Trujillo, Jose Maria

2004-01-01

The Instituto de Investigaciones Cardiológicas (ININCA) was founded by Alberto C. Taquini in 1944 and directed by him during more than 50 years, until his death in 1998. The Institute was (and still is) dedicated to research in connection with CONICET (National Research Council) and to teaching within the Faculty of Medicine of the University of Buenos Aires. From the very beginning research was centered on hypertension, hypoxia and hemodynamic adaptations, renal physiology and electrolytes, arterial wall, cardiac metabolism, myocardial pharmacology and regulation of the circulation by the central nervous system. On the basis of Taquini's autobiographical notes, the experiments are reported which eventually led to the discovery of hypertensin, angiotensin and their relation with renin, together with the discussions promoted by the diverse hypotheses proposed by both national and international groups of investigators as the mechanism of hypertension. Taquini also played an important role in promoting science at national levels including his role as the first Secretary of Science and Technology from 1968 to 1971. He believed that scientific research is something more than planning and producing, that it also involves creating knowledge. As such he made many contributions to science, formed many disciples, and directed an Institute which is demonstrating its continuity.

Qualification of flat welding of nuclear fuel bars

International Nuclear Information System (INIS)

Romero C, J.; Rivera M, H.

2001-01-01

The qualification of flat welding consists in the process (procedures (11), instructions (5), specifications (4) and programs (3)) and equipment (systems (4), equipment (6)) with the Personal Qualification (operators and supervisors) that was done in simultaneous form and supported with test and training programs with its respective technical reports, liberated by the Quality Assurance Office of ININ. Moreover, specific procedures of process and personal qualification are realized with the respective supervision by Quality Assurance Office. For the process, 20 welding were realized as follow: 5 welding with maximum contributing of heat, 10 welding with nominal contributing of heat, 5 welding with minimum contributing of heat. The heat contributing for the qualification was done maximum, of increasing the welding current, diminishing the helium flux and the revolutions per minute of the bar, at the moment of welding, with respect to nominal values. In the minimum contributing of heat it is diminished the welding current, increasing the helium flux and the revolutions per minute of the bar with respect to nominal values. With the qualification it has been finished the development of flat welding with results which define an own method of ININ. It was implemented a pneumatic system, for the elimination of micron cracks. It was required a control of turn velocity of the bar of hundredth of revolution. Moreover the main welding parameters each 40 μs are acquired. Also it was automated completely the process to avoid possible human mistakes. The standard deviations of the values of the realized inspections in the quality, are lower. Process, equipment and personnel with their respective Quality reports and registries are qualified, as well as the Quality certificates of two operators and one supervisor. (Author)

Substitution of 125-I-T3, 125-I-T4 and 125-I-TSH produced in the ININ, in commercial boxes for radioimmunoessay; Substitucion de 125-I-T3, 125-I-T4 y 125-I-TSH producidas en el ININ, en estuches comerciales para radioinmunoanalisis

Energy Technology Data Exchange (ETDEWEB)

Delgado S, B; Zambrano A, F; Lavalley E, C; Ferro F, G; Lezama C, J

1991-03-15

Due to the half, relatively short life, of the I-125 used in the radioinmunoanalisis (he/she LAUGHS) of hormones realcionadas with the thyroid, frequently it is observed that they are the other reagents of commercial cases without using, reason for the one which you piede the possibility to use in their entirety statements kits for the CREEK, what causes lost economic and another type of deficiencies. Presently work the results are presented obtained on the characteristics of quality of commercial stuches for the CREEK of hormones of the thyroid profile (T3, T4 and TSH), after substituting to the different radiotrazadores in this cases. The marcaje of the hormones with I-125 was made by means of the method of the cloramina T with 25 seconds of reaction for each hormone, purifying the T3 and the T4 for cromatografia liquidates of high efficiency and to the TSH for cromatografia of likeness in a column of cellulose microcristalina of 6 x 0.8 cm. the substitution of the radiotrazador is made in the commercial cases and the protocol was continued proposed by the makers, giving a coefficient of correlation of -0-997, as a result after the comparison of the straight line among the cases without and with substitution of the radiotrazador; besides certain parameters of quality of the such rehearsals as: the maximum unions (50%+-5) and inespecifica (<5%), slope of the straight line (-2.1 + - 0.2), and other coming from the use of samples of control of quality. We can conclude that at the moment we have in the ININ radiotrazadores of T3, T4 and TSH of good quality, like to be substituted in commercial cases and to use this way to the maximum these games of reagents that are so expensive. (Author)

PREFACE: XXXV Symposium on Nuclear Physics

Science.gov (United States)

Padilla-Rodal, E.; Bijker, R.

2012-09-01

for Mexican students to present their current research and interact with the visiting scientists. The present volume contains 21 research articles based on invited talks presented at the symposium. We cannot thank enough to all the authors for their enthusiastic contribution, to the anonymous referees for the time they devoted to the review process, which helped us to maintain the high standard of the Conference Proceedings. Finally we would like to thank the International Advisory Committee and the Sponsoring Organizations that made this event possible. E Padilla-Rodal and R Bijker Editors Conference photograph International Advisory Committee Osvaldo Civitarese, Universidad Nacional de La Plata, Argentina Jerry P Draayer, Louisiana State University, USA Alfredo Galindo-Uribarri, Oak Ridge National Laboratory, USA Paulo Gomes, Universidade Federal Fluminense, Brazil Piet Van Isacker, GANIL, France James J Kolata, University of Notre Dame, USA Reiner Krücken, TRIUMF, Canada Jorge López, The University of Texas at El Paso, USA Stuart Pittel, University of Delaware, USA W Michael Snow, Indiana University, USA Adam Szczepaniak, Indiana University, USA Michael Wiescher, University of Notre Dame, USA Organizing Committee Elizabeth Padilla-Rodal (Chair), Instituto de Ciencias Nucleares, UNAM, Mexico Roelof Bijker, Instituto de Ciencias Nucleares, UNAM, Mexico Sponsoring Organizations División de Física Nuclear, SMF Dirección General de Asuntos de Personal Académico, UNAM Centro Latino-Americano de Física Instituto de Ciencias Nucleares, UNAM Instituto de Física, UNAM Instituto Nacional de Investigaciones Nucleares

Advances in the research line of diagnosing of faults in fossil fuel power plants; Avances en la linea de investigacion de diagnostico de fallas en centrales termoelectricas

Energy Technology Data Exchange (ETDEWEB)

Ruz H, Jose A [Universidad Autonoma del Carmen, Campeche (Mexico); Sanchez C, Edgar N [Centro de Investigacion y Estudios Avanzados del Instituto Politecnico Nacional, Mexico, D.F. (Mexico); Suarez Cerda, Dionisio A; Quintero R, Agustin [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2006-07-01

This article deals with a research in progress searching to take care of the faults that occur with greatest frequency in the fossil fuel power plants of Mexico with the aid of tools of computational intelligence such as the neuronal networks and the fuzzy logic, for the online recognition of the dynamic behavior patterns of variable groups. What this research looks for is the development of individual systems, in relation to the computational intelligence techniques that continuously supervise the functioning of the unit and inform the operator of the eventual faults in the understanding that on time attention to the faults will result in a minimum cost. The advantages of these diagnosis mechanisms are established in comparison to alternative diagnosis methods, such as their associative memory useful to store fault patterns. [Spanish] Se trata de una investigacion en progreso que busca atender las fallas que ocurren con mayor frecuencia en las unidades termoelectricas de Mexico con la ayuda de herramientas de inteligencia computacional como las redes neuronales y la logica difusa, para el reconocimiento en linea de patrones de comportamiento dinamico de grupos de variables. Lo que esta investigacion busca es desarrollar sendos sistemas, en relacion a las tecnicas de inteligencia computacional, que supervisen continuamente el funcionamiento de la unidad e informen al operador de fallas eventuales, en el entendido que la oportuna atencion a fallas redituara en un costo minimo. Las ventajas de estos mecanismos de diagnostico se establecen en comparacion a metodos de diagnostico alternativos, como su memoria asociativa util para almacenar patrones de falla.

Responsible handling of the radioactive waste at the Universidad de Costa Rica

International Nuclear Information System (INIS)

Mora Rodriguez, Patricia; Varela, Alfonso

2006-01-01

The Radiation Safety Program (RSP) of the Universidad de Costa Rica established in 1990, handles the radioactive waste generated at the University. A centralized storage waste room is used by the Centro de Investigacion en Ciencias Atomicas, Nucleares y Moleculares, Instituto de Investigacion en Salud, Centro de Investigacion en Biologia Celular y Molecular, and the Centro de Investigacion en Contaminacion Ambiental. The RSP has pre-storage procedures, internal controls, protocols for storage, withdrawal of sources and discharges to the environment, according to national and international legislation. The main radionuclides in liquid and solid wastes are P32, I125, S35 y C14; which after a storage period will be disposed of as exempted materials. The waste room also permanently stores sources with the following radionuclides Cs137, U238, Th232, Sr90, Ra226, Cd109, Cf252 and Am241. It has 96 permanent sources and 52 that will be disposed of. The RSP allows the University to have a centralized facility for the safe management of all radioactive waste generated locally. (Author)

Comparison of the dose results in whole body and thyroid caused by 131 I using the software AIDE, DOSINT and ACCUSCAN

International Nuclear Information System (INIS)

Quintero P, E.; Alfaro L, M.M.

2006-01-01

Due to the sharp incorporation of 3.7 MBq of 131 I via oral for a patient, with the purpose of obtaining a thyroid gamma gram, it makes later a pursuit on to carry out the calculation of effective dose committed using the software AIDE, DOSINT and Accuscan that possesses the National Institute of Nuclear Research (ININ) and to compare the results of these. For this study it was carried out a pursuit of the biokinetic behavior of the radioisotope in the patient's body, measuring the activity with a whole-body counter of vertical sweeping, Canberra, model Accuscan Canberra trademark. The calibration of the system it was carried out using a RMC-II Canberra trademark phantom. The patient was accounted to different intervals of time starting from April 5 up to June 30, 2005. The Accuscan II program Canberra trademark, it was acquired with the whole-body system in 1992 by the ININ. The DOSINT program was elaborated by the National Commission of Nuclear Safety and Safeguards of Mexico and proportionate to the ININ in 2000. So much the DOSINT program as the Accuscan are based on the ICRP-26/30. The AIDE program was provided by the IAEA through the project IAEA-ARCAL-RLA/9/049-LXXVII - Harmonization of procedures of internal dosimetry in 2005. This program is based on the ICRP-78. The present activity in the urine was measured later starting from the third day of the incorporation of 131 I to different intervals of time until the 87 th day. The measurements were carried out using a gamma spectrometer with a Ge Hp detector and beryllium window, with 27.4% of relative efficiency and graduate armor-plating. The calibration of the system it was carried out using a multi nuclides pattern packed in Marinelli geometry of 0.5 L, prepared by the Laboratory of Radioactive Patterns (LPR) of the INlN starting from a certified solution. (Author)

Comparison of the dose results in whole body and thyroid caused by {sup 131} I using the software AIDE, DOSINT and ACCUSCAN; Comparacion de los resultados de dosis en cuerpo entero y tiroides causada por {sup 131} I utilizando los softwares AIDE, DOSINT y ACCUSCAN

Energy Technology Data Exchange (ETDEWEB)

Quintero P, E.; Alfaro L, M.M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)]. e-mail: eqp@nuclear.inin.mx

2006-07-01

Due to the sharp incorporation of 3.7 MBq of {sup 131} I via oral for a patient, with the purpose of obtaining a thyroid gamma gram, it makes later a pursuit on to carry out the calculation of effective dose committed using the software AIDE, DOSINT and Accuscan that possesses the National Institute of Nuclear Research (ININ) and to compare the results of these. For this study it was carried out a pursuit of the biokinetic behavior of the radioisotope in the patient's body, measuring the activity with a whole-body counter of vertical sweeping, Canberra, model Accuscan Canberra trademark. The calibration of the system it was carried out using a RMC-II Canberra trademark phantom. The patient was accounted to different intervals of time starting from April 5 up to June 30, 2005. The Accuscan II program Canberra trademark, it was acquired with the whole-body system in 1992 by the ININ. The DOSINT program was elaborated by the National Commission of Nuclear Safety and Safeguards of Mexico and proportionate to the ININ in 2000. So much the DOSINT program as the Accuscan are based on the ICRP-26/30. The AIDE program was provided by the IAEA through the project IAEA-ARCAL-RLA/9/049-LXXVII - Harmonization of procedures of internal dosimetry in 2005. This program is based on the ICRP-78. The present activity in the urine was measured later starting from the third day of the incorporation of {sup 131} I to different intervals of time until the 87 th day. The measurements were carried out using a gamma spectrometer with a Ge Hp detector and beryllium window, with 27.4% of relative efficiency and graduate armor-plating. The calibration of the system it was carried out using a multi nuclides pattern packed in Marinelli geometry of 0.5 L, prepared by the Laboratory of Radioactive Patterns (LPR) of the INlN starting from a certified solution. (Author)

Technical and quality requisites (RTC's) 'a data architecture'

International Nuclear Information System (INIS)

Munoz G, R.; Jimenez R, B.; Ahedo A, S.

2007-01-01

The RTC's are notes of technical and of quality requisites that the CLV emits, according to validity procedures of the Nuclear power station, to specify purchasing requisites of equipment with quality assurance category. This document contains a description of the computer program application RTC's, elaborated by the ININ for the CLV that allows to capture and to process the information of a database whose purpose is to facilitate the elaboration of the RTC's. Details of its development process are included. (Author)

Formulation of an inhibitor radiopharmaceutical of prostatic antigen of 177Lu-Glu-Nh-CO-Nh-Lys membrane

International Nuclear Information System (INIS)

Ortega S, D.

2015-01-01

The prostate specific membrane antigen (PSMA) is a zinc metalloenzyme that is expressed on the cell membrane and highly expressed in prostate cancer. Recently, it has been demonstrated that the peptide sequence Glu-Nh-CO-Nh-Lys inhibit PSMA activity through an electrostatic interaction with the Zn. Several theragnostic radiopharmaceuticals with base in 177 Lu have been developed for radiotherapy of specific molecular targets because gamma and beta emissions of the radionuclide (β = 0.498 MeV and γ= 0.133 MeV). However, there is currently no label a formulation for preparing a radiopharmaceutical of 177 Lu-Glu-Nh-CO-Nh-Lys useful treatment of prostate cancer. The aim of this research was to optimize and document the process of production of the radiopharmaceutical 177 Lu-Glu-Nh-CO-Nh-Lys for sanitary registration application before the Comision Federal para la Proteccion contra Riesgos Sanitarios (COFEPRIS). The optimization of the production process was assessed a factorial design of three variables with mixed levels (3 x 3 x 2) where the dependent variable is the radiochemical purity, the analytical method was validated by UV-Vis spectrophotometry. Next, process validation was carried out by labeling 3 lots of the optimized formulation of the radiopharmaceutical (5.55 GBq (2.16 μg) of 177 LuCl 3 , 90 mg peptide PSMA, 50 mg ascorbic acid and 150 μL of acetate buffer 1 M ph 5), long-term stability was performed by high resolution liquid chromatography) to determine its useful shelf life. 3 validation batches were prepared under protocols of Good Manufacturing Practice (GMP) in the Production Plant of Radiopharmaceuticals of the Instituto Nacional de Investigaciones Nucleares (ININ), meet specifications preset by obtaining a sterile and free development of bacterial endotoxin yields of labeled 100% and which retains its quality characteristics radiochemical purity greater than 90% for at least 15 days. (Author)

Meta-análisis de las investigaciones sobre la violencia de género: el Estado produciendo conocimiento

Directory of Open Access Journals (Sweden)

Fátima Arranz Lozano

2015-03-01

Full Text Available Este trabajo realiza un meta-análisis de las investigaciones empíricas (cuantitativas/cualitativas sobre la violencia de género, o violencia contra las mujeres, realizadas en España en el periodo de 2005 a 2012. A través de ella se ha comprobado el control de este dispositivo de saber por parte del Estado. Control que es ejercido: usurpando el rol de investigador directo (analizaremos el caso en concreto de la Macroencuesta del Instituto de la Mujer; imponiendo ciertas constricciones teóricas y metodológicas en el proceso de investigación e incluso introduciendo a sus agentes de manera abierta a formar parte de los equipos de investigación universitarios. Toda injerencia política nunca es gratuita por mucho disfraz que quiera justificar su eficacia interventora. En definitiva, este artículo visibiliza la falta de autonomía científica derivada del control del Estado (independientemente del color político del gobierno de turno que aparece en la investigación sobre la violencia de género en España.

S-19: Futbolculara Uygulanan Üç Farklı Germe Tekniğinin Hamstring Esnekliğine Akut Etkisi: Pilot Bir Çalışma

Directory of Open Access Journals (Sweden)

Erkan Erol

2017-03-01

Full Text Available GİRİŞ: Fiziksel olarak aktif kişilerde ve sporcularda hamstring yaralanmaları yaygın görülür. Yetersiz ısınma, esnekliğin az olması, kas imbalansı, nöral gerginlik ve daha önce geçirilen yaralanmalar hamstring yaralanmalarına zemin hazırlar. Hamstring yaralanmasına neden olan faktörler arasında posterior kompartımanın yetersiz esnekliği en yaygın kabul gören nedenlerden biridir ve fiziksel aktiviteden önce germe uygulanmasının kasın, fasyanın ve nöral dokuların esnekliğini artırarak yaralanma riskini azaltacağı önerilmektedir. AMAÇ: Bu çalışmanın amacı futbolculara uygulanan üç farklı germe tekniğinin hamstring esnekliğine etkisini incelemektir.GEREÇ YÖNTEM: Çalışmaya yaşları 16 ile 20 yıl arasında olan 38 erkek futbolcu dahil edildi. Katılımcılar 3 gruba ayrıldı: 1. gruba sırtüstü pozisyonda statik hamstring germe, 2. gruba siyatik sinir nöral mobilizasyonu, 3. gruba mulligan yöntemine göre traksiyonla düz bacak kaldırma tekniği uygulandı. Uygulama süresi her 3 teknik için de 60 saniye olarak belirlendi. Uygulama öncesi ve sonrası katılımcıların dominant alt ekstremitesi gonyometre kullanılarak düz bacak kaldırma testi ile aktif ve pasif olarak değerlendirildi. Sonuçlar derece olarak kaydedildi.BULGULAR: Düz bacak kaldırma testi başlangıç değerleri karşılaştırıldığında müdahale öncesinde gruplar arası fark olmadığı görüldü. Uygulamalar sonrası her 3 grupta düz bacak kaldırma testinin aktif ve pasif eklem hareket açıklığında (EHA istatistiksel olarak anlamlı artış saptandı (p<0,05. Gruplar kendi arasında kıyaslandığında, mulligan yönteminin kullanıldığı grupta, uygulama sonrası hem aktif hem pasif EHA’nın diğer 2 gruptan daha fazla artış olduğu kaydedildi (p<0,05. Nöral mobilizasyon ve statik germe gruplarının EHA artışları arasında fark olmadığı görüldü (p<0,05.TARTIŞMA / SONUÇ: Bu sonu

Agronomic behavior of pseudo cereals genotypes subjected to drought and salinity conditions

International Nuclear Information System (INIS)

Cruz T, E. De la; Garcia A, J.M.; Gonzalez R, B.; Laguna C, A.

2007-01-01

With the purpose of evaluating the response to the salinity and drought of 7 genotypes of pseudo cereals that include to the variety of quinua Barandales (M7-0) and to the lines obtained by the radioinduced mutagenesis ININ 110 and ININ 333, two collections of red chia (Opopeo and Huiramangaro) and two collections of 'Huauzontle' of Atlacomulco (H1 and H3), were evaluated under a factorial experimental design two levels of humidity: normal watering and drought and three salinity levels 0, 50 and 100 mMhos. It was found a bigger yield in grams by plant in the drought subjected material (without salinity) and a bigger tolerance to the salinity in the genotypes H3, ININ M7-0, and ININ 110, exhibiting the 'Chia red' bigger susceptibility to the evaluated factors. (Author)

Ética y bioética en las investigaciones médicas y en los ensayos clínicos, una alternativa de capacitación en la facultad "Finlay-Albarrán"

Directory of Open Access Journals (Sweden)

Francisco Borjas Borjas

Full Text Available Se ha diseñado y desarrollado un curso de posgrado con el objetivo de contribuir a elevar la preparación de los profesionales de la salud para las investigaciones médicas y los ensayos clínicos desde los principios de la ética y la bioética. El diseño del curso se realizó a partir del análisis, en el Comité de Ética, de la investigación de los proyectos presentados, y de los trabajos defendidos en el tribunal para el ejercicio de Problemas Sociales de la Ciencia y la Tecnología. El curso ha quedado conformado por 9 temas y un taller final integrador, para un total de 64 horas. Se han realizado dos ediciones. La segunda tuvo como sede el Instituto Cubano de Oftalmología "Ramón Pando Ferrer". El criterio de los participantes, recogido de manera anónima, fue muy favorable. Finalmente ha quedado diseñada una alternativa de capacitación que contribuye a lograr un mejor desempeño profesional en el campo de las investigaciones médicas y en los ensayos clínicos, así como en la docencia, desde los principios de la ética y la bioética, con una concepción interactiva y participativa.

Anaerobic/aerobic treatment for the waste water from the Instituto de Investigaciones Electricas installations; Tratamiento anaerobio-aerobio de las aguas residuales de las instalaciones del IIE

Energy Technology Data Exchange (ETDEWEB)

Arvizu Fernandez, Jose Luis [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1996-12-31

The waste water treatment plant of the Instituto de Investigaciones Electricas (IIE) is analyzed. This plant originally was a plant of the activated sludge type (aerobic development), process that consumes large amounts of energy and that produces residual sludge 5 or 6 times greater than the anaerobic processes. The methodology and the techniques utilized were base in the analysis of the existing plant introducing an anaerobic treatment and performing laboratory experimentation. The plant design parameters considered are described. The results show the benefits of treating by anaerobic means the waste waters since depuration are obtained on the order of 75%, as well as the reduction of resulting residual sludge and in energy consumption. A reduction of 60% to 70% can be attained if a combination of anaerobic and aerobic processes is utilized [Espanol] Se analiza la planta de tratamiento de aguas residuales del Instituto de Investigaciones Electricas (IIE). Esta planta era originalmente una planta de lodos activados (desarrollo aerobio), proceso que consume mucha energia y genera lodos residuales de 5 a 6 veces mas que los procesos anaerobios. La metodologia y las tecnicas utilizadas se basaron en el analisis de la planta de tratamiento existente en el IIE; en la caracterizacion residual del IIE; en la modificacion de la planta de tratamiento introduciendo un tratamiento anaerobio y efectuando experimentacion en laboratorio. Se describen los parametros de diseno de la planta considerados. Los resultados muestran los beneficios de tratar por medios anaerobios las aguas residuales ya que se obtienen depuraciones del orden del 75%, asi como la reduccion de lodos residuales resultantes y el consumo de energia, pueden reducirse de un 60% a un 70% si se utiliza la combinacion de los procesos anaerobios y aerobios

Anaerobic/aerobic treatment for the waste water from the Instituto de Investigaciones Electricas installations; Tratamiento anaerobio-aerobio de las aguas residuales de las instalaciones del IIE

Energy Technology Data Exchange (ETDEWEB)

Arvizu Fernandez, Jose Luis [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1997-12-31

The waste water treatment plant of the Instituto de Investigaciones Electricas (IIE) is analyzed. This plant originally was a plant of the activated sludge type (aerobic development), process that consumes large amounts of energy and that produces residual sludge 5 or 6 times greater than the anaerobic processes. The methodology and the techniques utilized were base in the analysis of the existing plant introducing an anaerobic treatment and performing laboratory experimentation. The plant design parameters considered are described. The results show the benefits of treating by anaerobic means the waste waters since depuration are obtained on the order of 75%, as well as the reduction of resulting residual sludge and in energy consumption. A reduction of 60% to 70% can be attained if a combination of anaerobic and aerobic processes is utilized [Espanol] Se analiza la planta de tratamiento de aguas residuales del Instituto de Investigaciones Electricas (IIE). Esta planta era originalmente una planta de lodos activados (desarrollo aerobio), proceso que consume mucha energia y genera lodos residuales de 5 a 6 veces mas que los procesos anaerobios. La metodologia y las tecnicas utilizadas se basaron en el analisis de la planta de tratamiento existente en el IIE; en la caracterizacion residual del IIE; en la modificacion de la planta de tratamiento introduciendo un tratamiento anaerobio y efectuando experimentacion en laboratorio. Se describen los parametros de diseno de la planta considerados. Los resultados muestran los beneficios de tratar por medios anaerobios las aguas residuales ya que se obtienen depuraciones del orden del 75%, asi como la reduccion de lodos residuales resultantes y el consumo de energia, pueden reducirse de un 60% a un 70% si se utiliza la combinacion de los procesos anaerobios y aerobios

1997 Annual report. Technological Research Direction; Informe Anual 1997. Direccion de Investigacion Tecnologica

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-12-01

This document describes the results for one year of work. Here is presented the goals of the Technological Research Direction of the National Institute of Nuclear Research in Mexico, which is promoting and developing the production of high technologies in the nuclear sciences and related disciplines as well as to generate the technologies, products, quality insume for academic organizations, health, industrial and commercial that are required. (Author)

Laboratory of environmental radiological surveillance

International Nuclear Information System (INIS)

Mendez G, A.; Marcial M, F.; Giber F, J.; Montiel R, E.; Leon del V, E.; Rivas C, I.; Leon G, M.V.; Lagunas G, E.; Aragon S, R.; Juarez N, A.; Alfaro L, M.M.

1991-12-01

The department of radiological protection of the ININ requests the collaboration of the Engineering Unit for the elaboration of the work project of the laboratory of environmental radiological surveillance. The emission of radioactive substances to the atmosphere like consequence of the normal operation of the Nuclear Center, constitutes an exhibition source from the man to the radiations that it should be appropriately watched over and controlled to be able to determine the population's potential exhibition that it lives in the area of influence of the installation. (Author)

Technical and quality requisites (RTC's) 'a data architecture'; Requisitos tecnicos y de calidad (RTC' s) 'una arquitectura de datos'

Energy Technology Data Exchange (ETDEWEB)

Munoz G, R.; Jimenez R, B.; Ahedo A, S. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico)]. e-mail: rmg@nuclear.inin.mx

2007-07-01

The RTC's are notes of technical and of quality requisites that the CLV emits, according to validity procedures of the Nuclear power station, to specify purchasing requisites of equipment with quality assurance category. This document contains a description of the computer program application RTC's, elaborated by the ININ for the CLV that allows to capture and to process the information of a database whose purpose is to facilitate the elaboration of the RTC's. Details of its development process are included. (Author)

Laboratory of environmental radiological surveillance; Laboratorio de vigilancia radiologica ambiental

Energy Technology Data Exchange (ETDEWEB)

Mendez G, A; Marcial M, F; Giber F, J; Montiel R, E; Leon del V, E; Rivas C, I; Leon G, M V; Lagunas G, E; Aragon S, R; Juarez N, A; Alfaro L, M M

1991-12-15

The department of radiological protection of the ININ requests the collaboration of the Engineering Unit for the elaboration of the work project of the laboratory of environmental radiological surveillance. The emission of radioactive substances to the atmosphere like consequence of the normal operation of the Nuclear Center, constitutes an exhibition source from the man to the radiations that it should be appropriately watched over and controlled to be able to determine the population's potential exhibition that it lives in the area of influence of the installation. (Author)

TL Dosimetry on the Tandetron Ion Accelerator area of the ININ

International Nuclear Information System (INIS)

Valdovinos A, M.A.; Gonzalez M, P.R.

2000-01-01

For the fulfilment of the operation tests of the Positive Ions type Tandetron 4120 MC, 2 MV, it was obtained the permission consented by the National Commission of Nuclear safety and safeguards (CNSNS). During the stage of tests were arranged Tl dosemeters in the Tandetron Accelerator area, as well as toward to the beam exit. In this work, it was presented the results obtained of the measurement of radiation levels, as much in the area as in the beam exit. This Accelerator is useful in different fields of science such as: biology, radiochemistry, materials, solid state physics, archaeology and environmental sciences between others. (Author)

Agronomic behavior of pseudo cereals genotypes subjected to drought and salinity conditions; Compotamiento agronomico de genotipos de pseudocereales sometidos a condiciones de sequia y salinidad

Energy Technology Data Exchange (ETDEWEB)

Cruz T, E. De la; Garcia A, J.M. [ININ, Carretera Mexico-Toluca, 52750 La Marquesa, Ocoyoacac, (Mexico); Gonzalez R, B.; Laguna C, A. [Centro de Investigacion y Estudios Avanzados en Fitomejoramiento. UAEM, 50200 Toluca (Mexico)]. e-mail: ect@nuclear.inin.mx

2007-07-01

With the purpose of evaluating the response to the salinity and drought of 7 genotypes of pseudo cereals that include to the variety of quinua Barandales (M7-0) and to the lines obtained by the radioinduced mutagenesis ININ 110 and ININ 333, two collections of red chia (Opopeo and Huiramangaro) and two collections of 'Huauzontle' of Atlacomulco (H1 and H3), were evaluated under a factorial experimental design two levels of humidity: normal watering and drought and three salinity levels 0, 50 and 100 mMhos. It was found a bigger yield in grams by plant in the drought subjected material (without salinity) and a bigger tolerance to the salinity in the genotypes H3, ININ M7-0, and ININ 110, exhibiting the 'Chia red' bigger susceptibility to the evaluated factors. (Author)

Sigara karşıtı televizyon reklamlarında kullanılan korku çekiciliği faktörü etkinliğinin beyin görüntüleme tekniği ile ölçümü

OpenAIRE

Gürdin, Bahar

2016-01-01

Reklam etkinliği işletmelerin çok hassas bir şekilde üzerinde durduğu konulardan bir tanesidir. Reklamların etkinliğinin artırılabilmesi için çeşitli çekicilik faktörleri kullanılmaktadır. Korku çekiciliği faktörü de bu faktörlerden bir tanesidir. Çalışma, sigara karşıtı reklamlarda kullanılan korku çekiciliği faktörünün etkinliği üzerinedir. Etkinliğin ölçümü için fNIRS cihazından yararlanılmış ve bu sayede beyindeki kanın yoğunlaşma durumuna göre deneklerin bu tarz reklamlardan etkilenme dü...

Indemnización de perjuicios a los afectados por acuerdos de cartel y las investigaciones por violación al régimen de competencia: concurrencia de acciones civiles y administrativas

OpenAIRE

López Corzo, Juan Fernando

2017-01-01

El régimen jurídico de la competencia y en especial, la regulación sobre conductas anticompetitivas afronta la dualidad de penalizar la conducta y el resarcimiento de los afectados. Es claro que el mayor beneficiado de la competencia en el mercado es el consumidor, y el mayor afectado cuando se viola dicho régimen. Las investigaciones para su penalización son realizadas por la SIC como autoridad residual, pero no tiene la capacidad de resarcir a los afectados, la cual debe ser llevada ante la...

Substitution of 125-I-T3, 125-I-T4 and 125-I-TSH produced in the ININ, in commercial boxes for radioimmunoessay

International Nuclear Information System (INIS)

Delgado S, B.; Zambrano A, F.; Lavalley E, C.; Ferro F, G.; Lezama C, J.

1991-03-01

Due to the half, relatively short life, of the I-125 used in the radioinmunoanalisis (he/she LAUGHS) of hormones realcionadas with the thyroid, frequently it is observed that they are the other reagents of commercial cases without using, reason for the one which you piede the possibility to use in their entirety statements kits for the CREEK, what causes lost economic and another type of deficiencies. Presently work the results are presented obtained on the characteristics of quality of commercial stuches for the CREEK of hormones of the thyroid profile (T3, T4 and TSH), after substituting to the different radiotrazadores in this cases. The marcaje of the hormones with I-125 was made by means of the method of the cloramina T with 25 seconds of reaction for each hormone, purifying the T3 and the T4 for cromatografia liquidates of high efficiency and to the TSH for cromatografia of likeness in a column of cellulose microcristalina of 6 x 0.8 cm. the substitution of the radiotrazador is made in the commercial cases and the protocol was continued proposed by the makers, giving a coefficient of correlation of -0-997, as a result after the comparison of the straight line among the cases without and with substitution of the radiotrazador; besides certain parameters of quality of the such rehearsals as: the maximum unions (50%+-5) and inespecifica (<5%), slope of the straight line (-2.1 + - 0.2), and other coming from the use of samples of control of quality. We can conclude that at the moment we have in the ININ radiotrazadores of T3, T4 and TSH of good quality, like to be substituted in commercial cases and to use this way to the maximum these games of reagents that are so expensive. (Author)

Control console for the X-ray room

International Nuclear Information System (INIS)

Garcia H, J.M.; Aguilar B, M.A.; Torres B, M.A.

1998-01-01

It is presented the design and construction of Control console for the X-ray room of Metrology Center for ionizing radiations at National Institute of Nuclear Research (ININ). This system controls the positioning of 6 different filters for an X-ray beam. Also it controls a shutter which blockades the beam during periods established by user, these periods can be fixed from hours until tenth of second. The shutter opening periods, as well as the X-ray beam filter are establish and monitoring from a Personal computer outside of room. (Author)

Control console for the X-ray room; Consola de control para la sala de rayos X

Energy Technology Data Exchange (ETDEWEB)

Garcia H, J.M.; Aguilar B, M.A.; Torres B, M.A

1998-07-01

It is presented the design and construction of Control console for the X-ray room of Metrology Center for ionizing radiations at National Institute of Nuclear Research (ININ). This system controls the positioning of 6 different filters for an X-ray beam. Also it controls a shutter which blockades the beam during periods established by user, these periods can be fixed from hours until tenth of second. The shutter opening periods, as well as the X-ray beam filter are establish and monitoring from a Personal computer outside of room. (Author)

Laboratory of environmental radiological surveillance; Laboratorio de vigilancia radiologica ambiental

Energy Technology Data Exchange (ETDEWEB)

Mendez G, A.; Marcial M, F.; Giber F, J.; Montiel R, E.; Leon del V, E.; Rivas C, I.; Leon G, M.V.; Lagunas G, E.; Aragon S, R.; Juarez N, A.; Alfaro L, M.M

1991-12-15

The department of radiological protection of the ININ requests the collaboration of the Engineering Unit for the elaboration of the work project of the laboratory of environmental radiological surveillance. The emission of radioactive substances to the atmosphere like consequence of the normal operation of the Nuclear Center, constitutes an exhibition source from the man to the radiations that it should be appropriately watched over and controlled to be able to determine the population's potential exhibition that it lives in the area of influence of the installation. (Author)

Analysis of metal samples

International Nuclear Information System (INIS)

Ramirez T, J.J.; Lopez M, J.; Sandoval J, A.R.; Villasenor S, P.; Aspiazu F, J.A.

2001-01-01

An elemental analysis, metallographic and of phases was realized in order to determine the oxidation states of Fe contained in three metallic pieces: block, plate and cylinder of unknown material. Results are presented from the elemental analysis which was carried out in the Tandem Accelerator of ININ by Proton induced X-ray emission (PIXE). The phase analysis was carried out by X-ray diffraction which allowed to know the type of alloy or alloys formed. The combined application of nuclear techniques with metallographic techniques allows the integral characterization of industrial metals. (Author)

REPENSANDO LAS RELACIONES ENTRE LA EDUCACIÓN Y EL TRABAJO: Una reflexión basada en investigaciones realizadas en México

Directory of Open Access Journals (Sweden)

María de Ibarrola

Full Text Available Con base en investigaciones realizadas en México por la autora desde la década de los ochenta, se han ido construyendo cuatro dimensiones de análisis necesarias para repensar la naturaleza y el alcance de las relaciones entre la educación y el trabajo, más allá de las teorías clásicas. Se trata de la estructura heterogénea y desigual de los espacios de trabajo en el país; la prioridad que las políticas públicas conceden a la formación escolar para el trabajo y los actores que participan en ello; las condiciones reales de la formación para el trabajo en las escuelas; y las transiciones y trayectorias que viven los individuos entre la escuela y el trabajo. Con base en esos análisis se plantea la noción de relaciones complejas, multidimensionales, cambiantes, contradictorias, interactivas e históricas, flojamente acopladas, entre las que suceden todo tipo de imperfecciones y desajustes.

Aportes teóricos derivados de las investigaciones sobre el lenguaje entre el 2000 y el 2010: una revisión

Directory of Open Access Journals (Sweden)

Johny Villada Zapata

2012-01-01

Full Text Available El artículo presenta el análisis de contenido derivado de una revisión sistemática en la que se retomaron 57 estudios que tenían el lenguaje como tema central. Las investigaciones consultadas arrojan diversos aportes teóricos de los cuales sobresale, en primer lugar, el origen social de este proceso, tanto en la filogénesis como en la ontogénesis. En segundo lugar puede afirmarse que su desarrollo se ve afectado negativa o positivamente por variables como la nutrición, la relación con los padres, la socialización en la escuela y el ambiente social. Finalmente, la investigación con bebés muestra su participación activa en el reconocimiento del idioma, el acto de señalar como un hito importante en el desarrollo del lenguaje al provocar la atención conjunta y, finalmente, la relación existente entre el lenguaje y teoría de la mente.

Symposium Q: Magnetic Thin Films, Heterostructures, and Device Materials

Science.gov (United States)

2007-05-22

ing, and applications. version, hydrogen, and nuclear research. Examples of extended functionality of In addition to the presentations on government...and the pure Fe is bcc phase. United States Department of Energyi National Nuclear Security From these evidences, it indicates that the laminates form...in the regions where the self assembled monolayer is polar in Escudero3; ’Centro de Investigacion en Quimica Aplicada, Saltillo, nature, and it is non

Çalışanların İş Güvencesizliğinin İşten Ayrılma Niyetleri Üzerindeki Etkisi: Alanya Bölgesindeki Beş Yıldızlı Otellerde Bir Araştırma

OpenAIRE

KARACAOĞLU, Korhan

2018-01-01

İş güvencesizliği, mevcut işin sürekliliğine engel olacak her türlü yasal veya yasal olmayan örgütsel değişimler sonucunda ortaya çıkan, işgörende, belirsizlik düşüncesine dayalı olarak işini kaybetme kaygısı doğuran durumlardır. Alan yazında iş güvencesizliğinin sonuçlarından biri olan işten ayrılma niyeti ise bir çalışanın yakın bir zamanda işine son verme isteğiyle ilgili düşüncesi olarak tanımlanmaktadır. Bu çalışmada iş güvencesizliği ile işten ayrılma niyeti arasındaki etkileşim Alanya ...

The popularization of the nuclear sciences and its impact in the public opinion. Strategies of institutional communication; La divulgacion de las ciencias nucleares y su impacto en la opinion publica. Estrategias de comunicacion institucional

Energy Technology Data Exchange (ETDEWEB)

Ortega E, J.M. [ININ, Centro Nuclear ' Dr. Nabor Carrillo Flores' 52750 La Marquesa, Estado de Mexico (Mexico)]. e-mail: jortega@nuclear.inin.mx

2007-07-01

A continuous concern that is presented among those responsible for the exercise of the science and the technology in the Westerner entire world is to give to know the chore of their institutions and individuals. As in the case of several Mexican institutions, and particularly of the National Institute of Nuclear Research (ININ), one of their rector axes are to diffuse their achievements among the different social actors. A suitable vehicle to impact positively to the public opinion on the advances and tendencies of the nuclear energy it is the popularization of the science. The purpose of the popularization is to place accessible information in hands of the public and, by this, it requires of the use of talkative techniques derived of the journalism and of the public relationships, mainly, besides a basic knowledge of the scientific activity. In simple terms, it is not possible to achieve a positive image of the incomprehensible thing. By this cause, the correct understanding of the current administration of the nuclear energy represents the success or the failure of a strategy of institutional communication. Additionally, it is necessary a deep knowledge of the public opinion, in order to classify it and to have the option of to diversify the messages, of agreement with the characteristics of each segment of the public. Nevertheless their competition, the scientific popularization is centered in the construction of texts and other talkative tools, for that its acting frequently doesn't reach the effective dissemination of the messages. In this context, the use of a strategy of institutional communication represents the multi-functional option: on one hand and derived of the strategic planning, it will establish objectives, the periods of realization of the actions and the form of evaluating their efficiency; and on the other hand, it will allow the incorporation of creative solutions according with the nature of the origin institution, the space

Bilgi Liderliğinin Verimlilik Üzerine Etkisi: Sağlık Sektöründe Bir Araştırma / The Effect of Knowledge Leadership on Productivity: A Research on Health Sector

Directory of Open Access Journals (Sweden)

Karahan, Atilla

2009-04-01

Full Text Available Bilgiyi sistematik bir biçimde yöneten ve katma değer elde eden işletmeler rekabet avantajı sağlayacak ve rekabeti karşılayacaktır. İşletmelerde bilginin elde edilmesi, saklanması, paylaşılması ve kullanılmasına, diğer bir deyişle bilgi yönetiminin etkin ve başarılı bir şekilde gerçekleşmesine etki eden faktörler bulunmaktadır. Araştırmanın temel amacı küresel ekonomide bilgi liderliğinin verimlilik üzerine etkisinin araştırılmasıdır. Çalışma, bilgiyi üretme ve kullanmada en başarılı örnekleri sergileyen araştırma hastanelerinde görev yapan yöneticiler üzerinde gerçekleştirilmiştir. Araştırmanın kapsamına Afyon Kocatepe Üniversitesi, Isparta Süleyman Demirel Üniversitesi, Konya Selçuk Üniversitesi, Kütahya Dumlupınar Üniversitesi ve Eskişehir Osmangazi Üniversitesi hastanelerinde görev yapan başhekimler, başhekim yardımcıları, hastane müdürleri, müdür yardımcıları, başhemşireler ve başhemşire yardımcılarından oluşan toplam 120 yönetici dahil edilmiştir. Bu araştırmanın sonucunda ise bilgi liderliğinin verimlilik üzerine olumlu etkisi olduğu sonucuna varılmıştır.Organisations, which manage knowledge systematically, would have competitive advantage. In this respect, some factors like collecting, saving, using and sharing knowledge should be subjected under consideration. The main objective of the present research is to examine the knowledge leadership in a global economy. Empirical study was performed on managers of Research Hospitals, who were known with their success in producing and using knowledge. Included in the empirical investigation were hospital managers, managerial assistants, head nurses and assistant head nurses of Afyon Kocatepe University, Isparta Süleyman Demirel University, Konya Selçuk University, Kütahya Dumlupınar University and Eskişehir Osmangazi University hospitals. The results revealed a positive effect of knowledge

Inauguran nuevo tunel de acelerador

CERN Multimedia

Macedo, C

2003-01-01

"Contendra el Gran Colisionador de Hadrones del CERN. Ayer fue inaugurado el tunel subterraneo que acogera al experimento ATLAS, uno de los cuatro xperimentos que integraran el Gran Colisionador de Hadrones (LHC), que es construido en el Centro Europeo para la Investigacion Nuclear (CERN), en Ginebra" (1/3 page).

Beam trajectory simulation program at the National Institute of Nuclear Research Tandem Accelerator facility

International Nuclear Information System (INIS)

Murillo C, G.

1996-01-01

The main object of this thesis is to show in a clear and simple way to the people in general, the function of the Tandem Accelerator located on site the ININ facilities. For this presentation, a computer program was developed. The software written in C language in a structural form, simulates the ion production and its trajectory in a schematic and in an easy way to comprehend. According to the goals of this work, the simulation also shows details of some of the machine components like the source, the accelerator cavity, ,and the bombarding chamber. Electric and magnetic fields calculations are included for the 90 degrees bending magnet and quadrupoles. (Author)

Frecuencia de caries en niños de 1 a 5 años y conocimientos, actitudes y prácticas de acuerdo a investigaciones realizadas en universidades de Asunción reconocidas por el Ministerio de Educación y Cultura durante los años 2000 al 2013

Directory of Open Access Journals (Sweden)

Ninfa Jacquett Toledo

2015-07-01

Full Text Available Objetivo: Conocer la frecuencia de caries en niños de 1 a 5 años y conocimientos, actitudes y prácticas de acuerdo a investigaciones realizadas en universidades de Asunción reconocidas por el Ministerio de Educación y Cultura durante los años 2000 al 2013, teniendo en cuenta los criterios de inclusión y exclusión establecidos para la realización del estudio; el 59,2% corresponden a universidades que se encuentran en gran Asunción, mientras que el 47,1% corresponden al interior del país. Se identificó un total de 29 investigaciones en niños de 1 a 5 años entre los años 2000 al 2013 referentes a caries y conocimiento, actitud y práctica; siendo más estudiada la variable caries. Los valores del ceod pudieron demostrar un inicio de caries a los 3 años 1.76 aumentando con la edad y llegando a los 5 años a 4.73. La frecuencia de caries se encontró a partir de la edad de 2 años con valores entre 1,64% a 18,8%; en la edad de 3 años entre 8 a 40%; a los 4 años entre 15,5% a 72,7% y a los 5 años entre 38,7% a 58%; 50% de las investigaciones mostraron un nivel de conocimiento y práctica desfavorable.

The nuclear research in Mexico (1986-1994). Bibliometrics of papers published in journals outside of the Latin American region; La investigacion nuclear en Mexico (1986-1994). Bibliometria de trabajos publicados en revistas fuera de la region latinoamericana

Energy Technology Data Exchange (ETDEWEB)

Garrido R, S A

2007-07-01

Mexican research in nuclear science during 1986-1994 has been studied through the bibliometric analysis of the output of scientific papers published by Mexican institutions in non Latin American journals of international circulation. Bibliographic references were compiled from the International Nuclear Information System (INIS) database as well as from proceedings and annual reports of Mexican research institutions within the field of interest. After careful normalization, data from the 920 detected papers were keyboarded and checked in a database used for the evaluation of the number of papers by discipline, source institutions and departments, authors, coauthors, publication year as well as publishing journals and their geographic origin, language of publication and the interactions of all these parameters. Results were expressed in reports, and summarized in tables and figures to visualize the state of this research field in Mexico. (Author)

Neutron dosimetry. Environmental monitoring in a BWR type reactor

International Nuclear Information System (INIS)

Tavera D, L.; Camacho L, M.E.

1991-01-01

The measurements carried out on reactor dosimetry are applied mainly to the study on the effects of the radiation in 108 materials of the reactor; little is on the environmental dosimetry outside of the primary container of BWR reactors. In this work the application of a neutron spectrometer formed by plastic detectors of nuclear traces manufactured in the ININ, for the environmental monitoring in penetrations around the primary container of the unit I of the Laguna Verde central is presented. The neutron monitoring carries out with purposes of radiological protection, during the operational tests of the reactor. (Author)

Neutron dosimetry. Environmental monitoring in a BWR type reactor; Dosimetria de neutrones. Monitoreo ambiental en un reactor del tipo BWR

Energy Technology Data Exchange (ETDEWEB)

Tavera D, L; Camacho L, M E

1991-01-15

The measurements carried out on reactor dosimetry are applied mainly to the study on the effects of the radiation in 108 materials of the reactor; little is on the environmental dosimetry outside of the primary container of BWR reactors. In this work the application of a neutron spectrometer formed by plastic detectors of nuclear traces manufactured in the ININ, for the environmental monitoring in penetrations around the primary container of the unit I of the Laguna Verde central is presented. The neutron monitoring carries out with purposes of radiological protection, during the operational tests of the reactor. (Author)

The popularization of the nuclear sciences and its impact in the public opinion. Strategies of institutional communication

International Nuclear Information System (INIS)

Ortega E, J.M.

2007-01-01

A continuous concern that is presented among those responsible for the exercise of the science and the technology in the Westerner entire world is to give to know the chore of their institutions and individuals. As in the case of several Mexican institutions, and particularly of the National Institute of Nuclear Research (ININ), one of their rector axes are to diffuse their achievements among the different social actors. A suitable vehicle to impact positively to the public opinion on the advances and tendencies of the nuclear energy it is the popularization of the science. The purpose of the popularization is to place accessible information in hands of the public and, by this, it requires of the use of talkative techniques derived of the journalism and of the public relationships, mainly, besides a basic knowledge of the scientific activity. In simple terms, it is not possible to achieve a positive image of the incomprehensible thing. By this cause, the correct understanding of the current administration of the nuclear energy represents the success or the failure of a strategy of institutional communication. Additionally, it is necessary a deep knowledge of the public opinion, in order to classify it and to have the option of to diversify the messages, of agreement with the characteristics of each segment of the public. Nevertheless their competition, the scientific popularization is centered in the construction of texts and other talkative tools, for that its acting frequently doesn't reach the effective dissemination of the messages. In this context, the use of a strategy of institutional communication represents the multi-functional option: on one hand and derived of the strategic planning, it will establish objectives, the periods of realization of the actions and the form of evaluating their efficiency; and on the other hand, it will allow the incorporation of creative solutions according with the nature of the origin institution, the space-time conditions

Evaluation of the integrity and duration of the Laguna Verde nuclear power plant life- Plant Life Management program (PLIM). TC MEX 04/53 Technical Cooperation Project

International Nuclear Information System (INIS)

Arganis J, C.R.; Diaz S, A.; Aguilar T, J.A.

2006-01-01

As part of the IAEA TC MEX 04/53 Project 'Evaluation of the integrity and extension of life of the Laguna Verde nuclear power plant Handling Program of plant' whose objective is the one of beginning the actions to apply the methodology of Handling of plant life in the Unit 1 of the Laguna Verde Nucleo electric Central for to obtain the Renovation of License in 2020 the ININ, through the Department of Synthesis and Characterization of materials has carried out more of 20 analysis of susceptibility to the intergranular cracking for corrosion under effort in interns so much of the reactor of the unit 1 like of the unit 2 documenting the current state of components based on the type or types of materials that conform them, to it thermomechanical history, operational and of production, as well as of the particularities associated to its use and operation. For the application of the methodology of life handling of plant 5 structure systems or pilot components were selected, to carry out the programs of handling of the aging and handling of plant life: The encircling of the reactor core (Core Shroud), the reactor pressure vessel (Reactor Pressure Vessel), the primary container (Primary Containment), the recirculation system of feeding water (Reactor Feed Water) and cables. (Author)

Research and technological development in the subject of the wind power generation; Investigacion y desarrollo tecnologico en el tema de la generacion eoloelectrica

Energy Technology Data Exchange (ETDEWEB)

Borja Diaz, Marco A; Gonzalez Galarza, Raul [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

2000-07-01

The wind power technology has advanced in an important way during the last decade. In the industrialized countries the annual sales of aero generators reach surprising numbers and increase annually at a rate of 30%. But, is this the direct product of the maturity of this technology?, is at the moment the wind power technology economically competitive with the conventional options? Do necessities exist of Research and Technological Development in the subject? This article presents some facts and indicators that will help the reader to deduce his own conclusions. [Spanish] La tecnologia eoloelectrica ha avanzado de manera importante durante la ultima decada. En los paises industrializados las ventas anuales de aerogeneradores alcanzan cifras sorprendentes y se incrementan al 30% anual. Pero, es esto el producto directo de la madurez de esta tecnologia?, actualmente la tecnologia eoloelectrica es economicamente competitiva con las opciones convencionales?, existen necesidades de Investigacion y Desarrollo Tecnologico en el tema? Este articulo presenta algunos hechos e indicadores que ayudaran al lector a deducir sus propias conclusiones.

Radiological protection of patients in diagnostic and interventional radiology, nuclear medicine and radiotherapy. Contributed papers

International Nuclear Information System (INIS)

2001-01-01

An International Conference on the Radiological Protection of Patients in Diagnostic and Interventional Radiology, Nuclear Medicine and Radiotherapy organized by the International Atomic Energy Agency and co-sponsored by the European Commission, the Pan American Health Organization and the World Health Organization was held in Malaga, Spain, from 26 to 30 March 2001. The Government of Spain hosted this Conference through the Ministerio de Sanidad y Consumo, the Consejo de Seguridad Nuclear, the Junta de Andalucia, the Universidad de Malaga and the Grupo de Investigacion en Proteccion Radiologica de la Universidad de Malaga (PRUMA). The Conference was organized in co-operation with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), the International Commission on Radiological Protection (ICRP) and the following professional societies: International Organization of Medical Physicists (IOMP), International Radiation Protection Association (IRPA), International Society of Radiation Oncology (ISRO), International Society of Radiology (ISR), International Society of Radiographers and Radiological Technologists (ISRRT) and World Federation of Nuclear Medicine and Biology (WFNMB). This publication contains contributed papers submitted to the Conference Programme Committee. The papers are in one of the two working languages of this Conference, English and Spanish. The topics covered by the Conference are as follows: Radiological protection of patients in general diagnostic radiology (radiography), Radiological protection of patients in general diagnostic radiology (fluoroscopy), Radiological protection issues in specific uses of diagnostic radiology, such as mammography and computed tomography (with special consideration of the impact of digital techniques), Radiological protection in interventional radiology, including fluoroscopy not carried out by radiologists, Radiological protection of patients in nuclear medicine, Developing and

Radiological protection of patients in diagnostic and interventional radiology, nuclear medicine and radiotherapy. Contributed papers

Energy Technology Data Exchange (ETDEWEB)

NONE

2001-03-01

An International Conference on the Radiological Protection of Patients in Diagnostic and Interventional Radiology, Nuclear Medicine and Radiotherapy organized by the International Atomic Energy Agency and co-sponsored by the European Commission, the Pan American Health Organization and the World Health Organization was held in Malaga, Spain, from 26 to 30 March 2001. The Government of Spain hosted this Conference through the Ministerio de Sanidad y Consumo, the Consejo de Seguridad Nuclear, the Junta de Andalucia, the Universidad de Malaga and the Grupo de Investigacion en Proteccion Radiologica de la Universidad de Malaga (PRUMA). The Conference was organized in co-operation with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), the International Commission on Radiological Protection (ICRP) and the following professional societies: International Organization of Medical Physicists (IOMP), International Radiation Protection Association (IRPA), International Society of Radiation Oncology (ISRO), International Society of Radiology (ISR), International Society of Radiographers and Radiological Technologists (ISRRT) and World Federation of Nuclear Medicine and Biology (WFNMB). This publication contains contributed papers submitted to the Conference Programme Committee. The papers are in one of the two working languages of this Conference, English and Spanish. The topics covered by the Conference are as follows: Radiological protection of patients in general diagnostic radiology (radiography), Radiological protection of patients in general diagnostic radiology (fluoroscopy), Radiological protection issues in specific uses of diagnostic radiology, such as mammography and computed tomography (with special consideration of the impact of digital techniques), Radiological protection in interventional radiology, including fluoroscopy not carried out by radiologists, Radiological protection of patients in nuclear medicine, Developing and

Annual Research Technical Report 2003; Informe Tecnico de Investigacion Anual del 2003

Energy Technology Data Exchange (ETDEWEB)

Alonso V, G.; Viais J, J.; Mendoza G, G.; Ramirez S, J.R.; Castillo M, J.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2005-09-15

This report has among its objectives to carry out the Probabilistic Safety Analysis Level 1 for the IRIS inside the project of development of reactors of IV Generation. To generate computational calculation tools for the analysis of the reactors of IV Generation. To generate computational tools to optimize the use of the nuclear fuel. (Author)

Annual Research Technical Report 2004; Informe Tecnico de Investigacion Anual del 2004

Energy Technology Data Exchange (ETDEWEB)

Alonso V, G.; Viais J, J.; Mendoza G, G.; Ramirez S, J. R.; Castillo M, J. A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2005-09-15

In this work it plans to be carried out the Probabilistic Safety Analysis level 1 for the Modified Design of the IRIS Reactor. To generate computational tools of calculation of the analysis of the reactors of IV Generation and to optimize the use of nuclear fuel. To elaborate the economic analysis of the IRIS Reactor. (Author)

Factores que determinan realizar la reserva provisional de las investigaciones preliminares en los delitos de falsificación de documentos por los fiscales en el Distrito Fiscal de Ucayali en los años 2012-2013

OpenAIRE

Alvarado Cabrera, Yenni Edita

2015-01-01

La presente investigación tuvo objetivo identificar los factores que influyen en la reserva provisional de las investigaciones preliminares en los delitos de falsificación de documentos, en las Fiscalías Provinciales Penales Corporativas de la Provincia de Coronel Portillo — Ucayali, en tos años 2012-2013, planteándose como una hipótesis que, la omisión de la condición de procedibilidad, la inexistencia de peritos criminalisticos y la falta de modificación del numeral 4) del artículo 3340 del...

The journal impact factor as a parameter for the evaluation of researchers and research El factor de impacto de las revistas como parámetro para la evaluacion de investigadores e investigaciones

Directory of Open Access Journals (Sweden)

K.-F. Kaltenborn

2004-07-01

Full Text Available The journal impact factor (IF, which is published annually by the Institute for Scientific Information® (USA, is meanwhile in widespread use as a scientometric parameter for the evaluation of research and researchers in Germany and other European countries. The present article subjects the IF to critical analysis. It first deals with processes of production, transfer, and use of medical knowledge, because the IF intervenes in these processes on account of its reflexivity. Secondary effects of the IF resulting from its reflexivity are discussed with the focus on the level of the author, the journal and the medical discipline as well as on social knowledge processes in society. In addition, the extent to which the IF is appropriate for evaluating the quality of a specific article, of a journal or of individual and collective research achievements is discussed. The present article calls for a research evaluation in accordance with the recommendations of the Deutsche Forschungsgemeinschaft (German Research Council, DFG and of the Arbeitsgemeinschaft der Wissenschaftlichen Medizini-schen Fachgesellschaften (Association of the Scientific Medical Societies, AWMF; and b for more intensive occupation with and organization of medical knowledge processes.El factor de impacto de las revistas (journal impact factor - IF, que publica anualmente el Institute for Scientific Information® (EE.UU., se emplea generalizadamente como parámetro cienciométrico para evaluar las investigaciones y a los investigadores en Alemania y otros países europeos. El presente artículo somete al IF a un análisis crítico. Primero trata de los procesos de producción, comunicación y empleo del conocimiento médico, pues el IF interviene en estos procesos en virtud de su reflexividad. Se exponen los efectos secundarios del IF, que surgen de esta reflexividad, centrándose en el nivel del autor, de la revista y de la disciplina médica, así como en los procesos de conocimiento

Development of a computer program of fast calculation for the pre design of advanced nuclear fuel 10 x 10 for BWR type reactors; Desarrollo de un program de computo de calculo rapido para el prediseno de celdas de combustible nuclear avanzado 10 x 10 para reactores de agua en ebullicion

Energy Technology Data Exchange (ETDEWEB)

Perusquia, R.; Montes, J.L.; Ortiz, J.J. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)]. e-mail: mrpc@nuclear.inin.mx

2005-07-01

In the National Institute of Nuclear Research (ININ) a methodology is developed to optimize the design of cells 10x10 of assemble fuels for reactors of water in boil or BWR. It was proposed a lineal calculation formula based on a coefficients matrix (of the change reason of the relative power due to changes in the enrichment of U-235) for estimate the relative powers by pin of a cell. With this it was developed the computer program of fast calculation named PreDiCeldas. The one which by means of a simple search algorithm allows to minimize the relative power peak maximum of cell or LPPF. This is achieved varying the distribution of U-235 inside the cell, maintaining in turn fixed its average enrichment. The accuracy in the estimation of the relative powers for pin is of the order from 1.9% when comparing it with results of the 'best estimate' HELIOS code. With the PreDiCeldas it was possible, at one minimum time of calculation, to re-design a reference cell diminishing the LPPF, to the beginning of the life, of 1.44 to a value of 1.31. With the cell design with low LPPF is sought to even design cycles but extensive that those reached at the moment in the BWR of the Laguna Verde Central. (Author)

Risk analysis in the chemical industry; Analisis de riesgos en la industria quimica

Energy Technology Data Exchange (ETDEWEB)

Rea Soto, Rogelio; Sandoval Valenzuela, Salvador [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

2000-07-01

The Instituto de Investigaciones Electricas has a group of risk analysis (GAR), specialized in the most advanced methodologies to apply them in diverse industries of the productive sector, such as the nuclear, the oil and the chemical industries. In this work the integrated methodology that the GAR uses to make risk analysis in the chemical and oil industries is described. These analyses have as an objective to make a meticulous evaluation of the system design, the operation practices, the maintenance and inspection policies and the emergency plans. [Spanish] El Instituto de Investigaciones Electricas cuenta con un grupo de analisis de riesgo (GAR), especializado en las metodologias mas avanzadas para aplicarlas en diversas industrias del sector productivo, como lo son la nuclear, la petrolera y la quimica. En este trabajo se describe la metodologia integrada que el GAR utiliza para realizar analisis de riesgos en las industrias quimica y petrolera. Estos analisis tienen como objetivo realizar una minuciosa evaluacion del diseno del sistema, las practicas de operacion, las politicas de mantenimiento e inspeccion y los planes de emergencia.

Statistical analysis of the wind around a nuclear power plant; Analisis estadistico del viento alrededor de una central nucleoelectrica

Energy Technology Data Exchange (ETDEWEB)

Tejeda, A; Alvarez, Oscar; Contreras, A D; Jauregui, E [Universidad Veracruzana, (Mexico)

1997-12-31

In order to show an appropriate methodology for the climatic analysis of the wind, some of the recent results in the investigation of the field flow around the Laguna Verde Nuclear Power Station, at Veracruz State (Mexico,) through the angular correlation coefficients and contingency tables among the registered wind directions by a meteorological tower at the levels of 10 and 60 meters high are presented. Finally, by applying an objective analysis of the data some conclusions are obtained in connection with the local winds with the mesoscale systems. [Espanol] Con el objeto de mostrar una metodologia apropiada en el analisis climatico del viento, se presentan algunos resultados recientes en la investigacion del campo de flujo en los alrededores de la central nucleoelectrica de Laguna Verde, Veracruz (Mexico), a traves de los coeficientes de correlacion angulares y de tablas de contingencia entre las direcciones del viento registradas por una torre meteorologica en los niveles de 10 y 60 metros de altura. Finalmente, aplicando analisis objetivo de los datos, se obtienen algunas conclusiones sobre la conexion de los vientos locales con los sistemas de mesoescala.

Statistical analysis of the wind around a nuclear power plant; Analisis estadistico del viento alrededor de una central nucleoelectrica

Energy Technology Data Exchange (ETDEWEB)

Tejeda, A; Alvarez, Oscar; Contreras, A. D.; Jauregui, E. [Universidad Veracruzana, (Mexico)

1996-12-31

In order to show an appropriate methodology for the climatic analysis of the wind, some of the recent results in the investigation of the field flow around the Laguna Verde Nuclear Power Station, at Veracruz State (Mexico,) through the angular correlation coefficients and contingency tables among the registered wind directions by a meteorological tower at the levels of 10 and 60 meters high are presented. Finally, by applying an objective analysis of the data some conclusions are obtained in connection with the local winds with the mesoscale systems. [Espanol] Con el objeto de mostrar una metodologia apropiada en el analisis climatico del viento, se presentan algunos resultados recientes en la investigacion del campo de flujo en los alrededores de la central nucleoelectrica de Laguna Verde, Veracruz (Mexico), a traves de los coeficientes de correlacion angulares y de tablas de contingencia entre las direcciones del viento registradas por una torre meteorologica en los niveles de 10 y 60 metros de altura. Finalmente, aplicando analisis objetivo de los datos, se obtienen algunas conclusiones sobre la conexion de los vientos locales con los sistemas de mesoescala.

Seminar of the irradiation uses in plant breeding

International Nuclear Information System (INIS)

1986-01-01

At the present time it is accepted the dependence of mankind to get its feeding starting from products proceeding of animals and plants. Such a dependence is affected by factors which overthrow production: in the case of vegetables this situation is evident in a diminution per surface unit, and in several cases in a reduction on the quality of the product. Since the beginning of agriculture, men has performed a selection of progenitors, generation by generation, in order to perpetuate the best of a cultivation for its exploitation. While an understanding of natural mechanisms capable of producing genetic variability is attained, men has to imitate the mechanisms in order to get what is known as artificial selection. This artificial selection reach a fortunate consecution via multiplication and exploitation of populations which fulfill the requisitions imposed by environment. Genetic variability has its origin in a natural process known as mutation which involve any change in the hereditary material, which besides to be capable to be heritable, be not product of genetic recombination. This genetic variability could be considered as few effective if no selection methodology was involved which have allowed its accurate canalization in the obtention of new varieties. The recognizance of agents capable to produce changes in hereditary material, it is to say, capable to induce mutations, brings with his self to contemplate the possibility of inducing changes in order to take advantage of the new varieties. In the global context, such a possibility began to be considered as feasible starting from the third decade of our century, while in the national context, starting from the sixties. The profits reached in our country are not enough impaction to give a reason for plant breeding and to use mutagens in research programs to institutions of the branch. Starting from 1974, the Instituto Nacional de Investigaciones Nucleares (ININ) began a series of activities with the

Formulation of an inhibitor radiopharmaceutical of prostatic antigen of {sup 177}Lu-Glu-Nh-CO-Nh-Lys membrane; Formulacion de un radiofarmaco inhibidor del antigeno prostatico de membrana {sup 177}Lu-Glu-NH-CO-NH-Lys

Energy Technology Data Exchange (ETDEWEB)

Ortega S, D.

2015-07-01

The prostate specific membrane antigen (PSMA) is a zinc metalloenzyme that is expressed on the cell membrane and highly expressed in prostate cancer. Recently, it has been demonstrated that the peptide sequence Glu-Nh-CO-Nh-Lys inhibit PSMA activity through an electrostatic interaction with the Zn. Several theragnostic radiopharmaceuticals with base in {sup 177}Lu have been developed for radiotherapy of specific molecular targets because gamma and beta emissions of the radionuclide (β = 0.498 MeV and γ= 0.133 MeV). However, there is currently no label a formulation for preparing a radiopharmaceutical of {sup 177}Lu-Glu-Nh-CO-Nh-Lys useful treatment of prostate cancer. The aim of this research was to optimize and document the process of production of the radiopharmaceutical {sup 177}Lu-Glu-Nh-CO-Nh-Lys for sanitary registration application before the Comision Federal para la Proteccion contra Riesgos Sanitarios (COFEPRIS). The optimization of the production process was assessed a factorial design of three variables with mixed levels (3 x 3 x 2) where the dependent variable is the radiochemical purity, the analytical method was validated by UV-Vis spectrophotometry. Next, process validation was carried out by labeling 3 lots of the optimized formulation of the radiopharmaceutical (5.55 GBq (2.16 μg) of {sup 177}LuCl{sub 3}, 90 mg peptide PSMA, 50 mg ascorbic acid and 150 μL of acetate buffer 1 M ph 5), long-term stability was performed by high resolution liquid chromatography) to determine its useful shelf life. 3 validation batches were prepared under protocols of Good Manufacturing Practice (GMP) in the Production Plant of Radiopharmaceuticals of the Instituto Nacional de Investigaciones Nucleares (ININ), meet specifications preset by obtaining a sterile and free development of bacterial endotoxin yields of labeled 100% and which retains its quality characteristics radiochemical purity greater than 90% for at least 15 days. (Author)

Development of a computer program of fast calculation for the pre design of advanced nuclear fuel 10 x 10 for BWR type reactors

International Nuclear Information System (INIS)

Perusquia, R.; Montes, J.L.; Ortiz, J.J.

2005-01-01

In the National Institute of Nuclear Research (ININ) a methodology is developed to optimize the design of cells 10x10 of assemble fuels for reactors of water in boil or BWR. It was proposed a lineal calculation formula based on a coefficients matrix (of the change reason of the relative power due to changes in the enrichment of U-235) for estimate the relative powers by pin of a cell. With this it was developed the computer program of fast calculation named PreDiCeldas. The one which by means of a simple search algorithm allows to minimize the relative power peak maximum of cell or LPPF. This is achieved varying the distribution of U-235 inside the cell, maintaining in turn fixed its average enrichment. The accuracy in the estimation of the relative powers for pin is of the order from 1.9% when comparing it with results of the 'best estimate' HELIOS code. With the PreDiCeldas it was possible, at one minimum time of calculation, to re-design a reference cell diminishing the LPPF, to the beginning of the life, of 1.44 to a value of 1.31. With the cell design with low LPPF is sought to even design cycles but extensive that those reached at the moment in the BWR of the Laguna Verde Central. (Author)

Equilibrium cycle of 18 months at 120% of the original nominal power with optimized fuel discharge burnt for the CLV

International Nuclear Information System (INIS)

Perusquia, R.; Montes, J.L.; Hernandez, J.L.; Ortiz, J.J.; Hernandez, H.; Castillo, A.

2007-01-01

The Federal Commission of Electricity carries out works at the moment related with the one increase from the power to original 120% of the nominal one in the rectors of water in boil (BWR) of the Laguna Verde Central (CLV). In the National Institute of Nuclear Research (ININ) are carried out studies of the impact on the design of the fuel recharge derived of this increase. As option in the ININ the feasibility of continuing using the same type of fuel assemble that one has come using recently in the CLV, the type GE12 is analyzed. To achieve it was diminished the LPPF of the power cells from 1.43 to 1.24. It was verified, with the recently acquired CMS codes system that the use of fuel assemble GE12 type with cells of low peak of local power and low gadolinia concentration (ININ4) they are suitable for cycles of 18 months at 120% of the original nominal power in the reactors of the CLV. It was decreased the recharge from 148 to 140 when using the ININ4 fuel assemble instead of one conventionally designed. This brings itself appreciable economic savings. However, the above mentioned brought itself an increase of the dispersion in the burnt of definitive fuel discharges. All this when it had already been fulfilled the goals and requirements imposed in the design of the balance cycle. It was necessary to establish a principle with base to the one which it was developed a method that allowed to reduce in efficient form the dispersion of the burnt of discharge and at the same time to already have a low impact in the operational parameters reached. The method was applied in the cycle of balance of 18 months to 120% of the original nominal power using the fuel assemble of low peak of local power being achieved the following results; it was decreased the dispersion of the burnt of definitive discharge from 5.4% to 2.2%, the maximum burnt of discharge was diminished from 50.694 GWD/M to 47.443 GWD/TM, it was increased the minimum burnt of discharge from 41.369 GWD/TM to 42

Un estudio sobre las investigaciones acerca de las ideas de los estudiantes en fuerza y movimiento A study on researches about students ideas on force and motion

Directory of Open Access Journals (Sweden)

Silvia Giorgi

2005-04-01

Full Text Available Se llevó a cabo un análisis exhaustivo de publicaciones sobre preconcepciones o ideas iniciales referidas al tema "cuerpos en movimiento", también comúnmente denominado "fuerza y movimiento". Se estudiaron los aspectos teóricos, metodológicos y conceptuales involucrados en una muestra de investigaciones consistente en 36 trabajos publicados en revistas especializadas y en libros de distintas procedencias y autores. Los sujetos participantes en las investigaciones abarcan distintos niveles y tipos de instrucción. Los resultados revelan, por un lado la existencia de distintos objetivos, diferentes posturas asumidas por los investigadores con relación a las ideas iniciales, fuentes de datos utilizadas variadas, así como heterogeneidad en los resultados obtenidos y en su interpretación. Por otro lado, del estudio realizado surge que si bien los sujetos no poseen una conceptualización científica de fuerza, en las representaciones que ellos construyen de los fenómenos mecánicos podrían estar involucradas significaciones del término Fuerza asociadas a otras magnitudes físicas tales como cantidad de movimiento y energía. Se concluye en la necesidad de abordar el problema de las preconcepciones desde una nueva perspectiva tanto teórica como metodológica.An exhaustive analysis of publications about human preconceptions or initial ideas in regard to "bodies in movement" was carried out. Theoretical, methodological and conceptual aspects of a sample of 36 works on individuals of diverse levels of instruction and published in journals and books of different origins, were studied. Our findings revealed a great variety of goals as well as of postures assumed by the investigators with respect to preconceptions. Types of data sources as well as results and their interpretation showed also a great dispersion. From another point of view, the results of the present study suggest that although the subjects' conceptualization of force may be wrong

El diálogo de saberes en investigaciones de ecología urbana: narrativas locales, cotidianidad e interdisciplinariedad

Directory of Open Access Journals (Sweden)

Dayana Ortiz

2017-11-01

Full Text Available El modelo de desarrollo económico global sobre el cual se sustentan las ciudades en la actualidad ha devenido en procesos metabólicos que impactan negativamente las condiciones de vida del ser humano en el entramado ecológico urbano. Con base en esta problemática, han emergido campos de investigación que intentan abordar los estudios urbanos desde enfoques que profundicen situaciones complejas, entre los cuales puede ubicarse la ecología urbana. Así, partiendo de algunos postulados de la ecología urbana desde el enfoque de “ecología de la ciudad”, en este trabajo se analiza la importancia de la incorporación del diálogo de saberes a partir de narrativas locales en investigaciones ecológicas urbanas desde miradas interdisciplinarias que integran la ecología tradicional, el urbanismo, la psicología social, la economía, la antropología, la geografía, la sociología y la historia. Para ello, se presentan algunas experiencias de Investigación Acción Participativa a escala local en comunidades de la ciudad de Caracas, Venezuela, desde las cuales se propone la incorporación de métodos interdisciplinarios en la ecología urbana. Este tipo de investigación constituye una aproximación importante a la dimensión fenomenológica de las experiencias cotidianas de vida urbana, la cual es preponderante para el estudio de las dinámicas ecológicas de los ecosistemas urbanos.

Nuclear law - Nuclear safety

International Nuclear Information System (INIS)

Pontier, Jean-Marie; Roux, Emmanuel; Leger, Marc; Deguergue, Maryse; Vallar, Christian; Pissaloux, Jean-Luc; Bernie-Boissard, Catherine; Thireau, Veronique; Takahashi, Nobuyuki; Spencer, Mary; Zhang, Li; Park, Kyun Sung; Artus, J.C.

2012-01-01

This book contains the contributions presented during a one-day seminar. The authors propose a framework for a legal approach to nuclear safety, a discussion of the 2009/71/EURATOM directive which establishes a European framework for nuclear safety in nuclear installations, a comment on nuclear safety and environmental governance, a discussion of the relationship between citizenship and nuclear, some thoughts about the Nuclear Safety Authority, an overview of the situation regarding the safety in nuclear waste burying, a comment on the Nome law with respect to electricity price and nuclear safety, a comment on the legal consequences of the Fukushima accident on nuclear safety in the Japanese law, a presentation of the USA nuclear regulation, an overview of nuclear safety in China, and a discussion of nuclear safety in the medical sector

Adherencia a las guías de informe sobre investigaciones en revistas biomédicas en América Latina y el Caribe

Directory of Open Access Journals (Sweden)

Demián Glujovsky

2014-10-01

Full Text Available OBJETIVO: Evaluar el conocimiento que los editores de las revistas indizadas en la base de datos LILACS tienen acerca de las Guías para informar y publicar sobre investigaciones -promovidas por la Red EQUATOR (Enhancing Quality and Transparency of Health Research-, los requisitos de las revistas para su uso y el conocimiento de los editores sobre los motivos de la baja tasa de uso. MÉTODOS: Se encuestó por correo electrónico a editores de LILACS sobre las Guías y su disponibilidad en el sitio web de EQUATOR y los requerimientos y dificultades para su uso. RESULTADOS: De los 802 editores, 16,4% respondieron la encuesta, más de la mitad dijeron no conocer las Guías (en especial STROBE y PRISMA y 30% tenían conocimiento sobre la Red EQUATOR. CONCLUSIONES: El primer estudio en América Latina y el Caribe sobre el conocimiento que tienen los editores de LILACS sobre las Guías revela que más de la mitad no conoce las Guías ni la Red EQUATOR.

Síndrome metabólico y preeclampsia: los aportes realizados por el Instituto de Investigaciones de la Fundación Cardiovascular de Colombia Metabolic syndrome and pre-eclampsia: contributions realized by the research Institute of the Colombian Cardiovascular Foundation

Directory of Open Access Journals (Sweden)

Patricio López-Jaramillo

2006-10-01

Full Text Available Durante los últimos años, el Instituto de Investigaciones de la Fundación Cardiovascular de Colombia ha centrado sus proyectos en el estudio de las diferencias en los mecanismos etiofisiopatológicos de la hipertensión inducida por el embarazo y del síndrome metabólico en poblaciones de países desarrollados y en vía de desarrollo, así como en el peso específico de los factores de riesgo que determinan la presentación de estas enfermedades. Los resultados obtenidos de las investigaciones realizadas en la población, sugieren que los cambios de hábitos de vida ocasionados por la sociedad consumista, son el principal determinante del riesgo aumentado de preeclampsia y enfermedades cardiovasculares que al momento presenta la población colombiana.The Research Institute of the Colombian Cardiovascular Foundation has centered its projects during the last years in the study of the differences in the etio-physiopathologic mechanisms of pregnancy induced hypertension and in the metabolic syndrome in populations of developed and underdeveloped countries, as well as in the value of the risk factors that determine the appearance of these diseases. The results obtained from the investigations realized in the population suggest that changes in life costumes due to a consumer society are the main determinant of the increased risk of pre-eclampsia and cardiovascular diseases that the Colombian population presents at this moment.

Evaluation of the integrity and duration of the Laguna Verde nuclear power plant life- Plant Life Management program (PLIM). TC MEX 04/53 Technical Cooperation Project; Evaluacion de la integridad y extension de vida de la planta de potencia nuclear Laguna Verde- Programa de manejo de vida de planta (PLIM). Proyecto de cooperacion tecnica TC MEX 04/53

Energy Technology Data Exchange (ETDEWEB)

Arganis J, C.R.; Diaz S, A.; Aguilar T, J.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2006-07-01

As part of the IAEA TC MEX 04/53 Project 'Evaluation of the integrity and extension of life of the Laguna Verde nuclear power plant Handling Program of plant' whose objective is the one of beginning the actions to apply the methodology of Handling of plant life in the Unit 1 of the Laguna Verde Nucleo electric Central for to obtain the Renovation of License in 2020 the ININ, through the Department of Synthesis and Characterization of materials has carried out more of 20 analysis of susceptibility to the intergranular cracking for corrosion under effort in interns so much of the reactor of the unit 1 like of the unit 2 documenting the current state of components based on the type or types of materials that conform them, to it thermomechanical history, operational and of production, as well as of the particularities associated to its use and operation. For the application of the methodology of life handling of plant 5 structure systems or pilot components were selected, to carry out the programs of handling of the aging and handling of plant life: The encircling of the reactor core (Core Shroud), the reactor pressure vessel (Reactor Pressure Vessel), the primary container (Primary Containment), the recirculation system of feeding water (Reactor Feed Water) and cables. (Author)

La migración de retorno. Una descripción desde algunas investigaciones latinoamericanas y españolas

Directory of Open Access Journals (Sweden)

Shirley Viviana Cataño Pulgarín

2015-01-01

Full Text Available Objetivo: realizar un acercamiento a la construcción teórica que se ha hecho del concepto de retorno y sus características como una etapa del proceso migratorio, en investigaciones nacionales y extranjeras, publicadas en español y que posibiliten algunos dominios comprensivos al tratamiento que se le ha dado a este fenómeno por parte de la comunidad académica. Metodología: la selección, organización, sistematización y análisis de los textos base para este artículo, se hace desde el enfoque cualitativo, apoyado en el tipo de investigación documental. Resultados: el retorno se considera como una etapa del proceso migratorio, ya sea como parte final o transitoria para el inicio de nuevos procesos. Entenderlo y caracterizarlo, demanda no solo establecer las formas como las personas salen de sus países de origen, sino también la identificación de las dinámicas de inserción de los países receptores, las políticas de gobierno y las razones que se aducen para querer regresar. Conclusión: la migración de retorno es una problemática de orden mundial que afecta tanto a los países expulsores como receptores por las implicaciones que tiene, por ello se hace necesaria la construcción de marcos conceptuales que permitan reconocer la interpretación que se le ha dado, no solo desde los datos, sino desde las experiencias de quienes son considerados retornados.

Evlilik İçi Zorla Cinsel İlişki Üzerine Bir Anket Çalışması

Directory of Open Access Journals (Sweden)

Mehmet Fatih Yavuz

1998-08-01

Full Text Available Bu çalışmada, 170’i hukuk mezunu, 480’i toplumun çeşitli kesimlerinden olmak üzere toplam 650 kişinin evlilikiçi zorla cinsel ilişki konusundaki görüşlerini belirleyen anket formlarının sonuçları değerlendirilmiştir. Çalışmaya katılanların % 65’inin, hukukçuların % 45’inin ve toplumdan katılanların % 71’inin kocanın karısıyla zorla cinsel ilişkide bulunmasının bir ırza geçme suçu oluşturacağına inandıkları görülmektedir.Çalışmaya katılanların yarıdan fazlasının bu görüşte olması evlilikiçi zorla cinsel ilişkinin ırza geçme suçu olarak düzenlenmesi yolundaki tartışmalara basamak oluşturmaktadır. Anahtar kelimeler: Evlilik, Irza geçme.

Design and optimization of the production process of radiopharmaceutical 177Lu-DOTA-Nal3-Octreotide for the treatment of gastro-entero-pancreatic tumors

International Nuclear Information System (INIS)

Sanchez G, M. F.

2013-01-01

Investigaciones Nucleares (ININ), they fulfill the pre established specifications when is obtained a sterile and free formulation of bacterial endotoxins with yields of labeled of 100% and that conserves their quality characteristics during at least 8 days. Finally, the legal file of the 177 Lu-DOTANOC was integrated with the documented evidence of the quality, security and effectiveness of a formulation of this radiopharmaceutical that is stable the enough time for their distribution and use in the treatment of gastro-entero-pancreatic tumors. (Author)

Design and optimization of the production process of radiopharmaceutical {sup 177}Lu-DOTA-Nal{sup 3}-Octreotide for the treatment of gastro-entero-pancreatic tumors; Diseno y optimizacion del proceso de produccion del radiofarmaco {sup 177}Lu-DOTA-Nal{sup 3}-Octreotido para el tratamiento de tumores gastroenteropancreaticos

Energy Technology Data Exchange (ETDEWEB)

Sanchez G, M. F.

2013-07-01

Instituto Nacional de Investigaciones Nucleares (ININ), they fulfill the pre established specifications when is obtained a sterile and free formulation of bacterial endotoxins with yields of labeled of 100% and that conserves their quality characteristics during at least 8 days. Finally, the legal file of the {sup 177}Lu-DOTANOC was integrated with the documented evidence of the quality, security and effectiveness of a formulation of this radiopharmaceutical that is stable the enough time for their distribution and use in the treatment of gastro-entero-pancreatic tumors. (Author)

Estimadores de consistencia interna en las investigaciones en salud: el uso del coeficiente alfa

Directory of Open Access Journals (Sweden)

Franciele Cascaes da Silva

Full Text Available La producción académica ha aumentado en el área de la salud, exigiendo cada vez más calidad en las publicaciones de gran impacto. Una de las formas de considerar la calidad es por medio de procedimientos que aumentan la consistencia del análisis de los datos, como la confiabilidad, que dependiendo del tipo de datos, puede ser evaluada por diferentes coeficientes, en especial el coeficiente alfa. Basados en lo anterior, la presente revisión reúne sistemáticamente artículos científicos producidos en los últimos cinco años, que de manera metodológica hicieron uso psicométrico del coeficiente α como un estimador de consistencia interna y de confiabilidad en procesos de construcción, adaptación y validación de instrumentos. La identificación de los estudios fue realizada sistemáticamente en las bases de datos Biomed Central Journals, Google Scholar, Web of Science, Wiley Online Library, Medline via Pubmed, Scielo, Scopus, Journals@Ovid, BMJ y Springer por medio del Portal de Periódicos CAPES, utilizando criterios de inclusión y exclusión. El análisis de los datos fue realizado por medio de triangulación, análisis de contenido y análisis descriptivo. Se obtuvo que la mayoría de los estudios fueron realizados principalmente en Irán (f=3, España (f=2 y Brasil (f=2, estos estudios tuvieron como objetivo testar las propiedades psicométricas de instrumentos, siendo que ocho estudios utilizaron el coeficiente α para evaluar la confiabilidad y nueve para evaluar la consistencia interna. Todos los estudios fueron clasificados como investigaciones metodológicas al analizar sus objetivos. Adicionalmente, cuatro estudios también fueron clasificados como correlacionales y uno como descriptivo-correlacional. Se puede concluir que a pesar de que el coeficiente α es ampliamente utilizado como uno de los principales parámetros para la evaluación de consistencia interna de instrumentos de medición del tipo cuestionario en el �

Specialized consultant in radiological safety to the Tula general hospital, PEMEX. IV. - October of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Garcia A, J.; Rodriguez A, F.

2002-01-01

The Tula general hospital, dependent of PEMEX, It request consultant of the ININ to be able to maintain their sanitary license for the use of X-ray equipment for the radiologic diagnostic.The proposal of the ININ was to be a program of technical attendance, schedule monthly to be able to solve the observations that are presented in the use of those equipment, and that the hospital can conserve its respective sanitary license.(Author)

Specialized consultant in radiological safety to the Reforma peripheral clinic, PEMEX. - III. - September and October of 2002

International Nuclear Information System (INIS)

Angeles C, A.; Rodriguez A, F.; Garcia A, J.

2003-02-01

The Reforma peripheral clinic, dependent of PEMEX, It request consultant of the ININ to be able to maintain their sanitary license for the use of X-ray equipment for the radiologic diagnostic.The proposal of the ININ was to be a program of technical attendance, schedule monthly to be able to solve the observations that are presented in the use of those equipment, and that the clinic can conserve its respective sanitary license.(Author)

Specialized consultant in radiological safety to the Tula general hospital, PEMEX. VI. - December of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Garcia A, J.; Rodriguez A, F.

2002-01-01

The Tula general hospital, dependent of PEMEX, It request consultant of the ININ to be able to maintain their sanitary license for the use of X-ray equipment for the radiologic diagnostic.The proposal of the ININ was to be a program of technical attendance, schedule monthly to be able to solve the observations that are presented in the use of those equipment, and that the hospital can conserve its respective sanitary license.(Author)

Specialized consultant in radiological safety to the Macuspana peripheral clinic, PEMEX. - IV. - November and December of 2002

International Nuclear Information System (INIS)

Angeles C, A.; Hernandez C, J. E.; Garcia A, J.; Rodriguez A, F.

2003-02-01

The Macuspana peripheral clinic, dependent of PEMEX, It request consultant of the ININ to be able to maintain their sanitary license for the use of X-ray equipment for the radiologic diagnostic.The proposal of the ININ was to be a program of technical attendance, schedule monthly to be able to solve the observations that are presented in the use of those equipment, and that the clinic can conserve its respective sanitary license.(Author)

Specialized consultant in radiological safety to the Salamanca regional hospital, PEMEX. VI. - December of 2001; Asesoria especializada en seguridad radiologica al hospital regional Salamanca, PEMEX. VI.- Diciembre de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Garcia A, J.; Rodriguez A, F

2002-01-15

The Salamanca regional hospital, dependent of PEMEX, It request consultant of the ININ to be able to maintain their sanitary license for the use of X-ray equipment for the radiologic diagnostic.The proposal of the ININ was to be a program of technical attendance, schedule monthly to be able to solve the observations that are presented in the use of those equipment, and that the hospital can conserve its respective sanitary license.(Author)

Specialized consultant in radiological safety to the Tula general hospital, PEMEX. V. - November of 2001; Asesoria especializada en seguridad radiologica al hospital general Tula, PEMEX. V.- Noviembre de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Garcia A, J.; Rodriguez A, F

2002-01-15

The Tula general hospital, dependent of PEMEX, It request consultant of the ININ to be able to maintain their sanitary license for the use of X-ray equipment for the radiologic diagnostic.The proposal of the ININ was to be a program of technical attendance, schedule monthly to be able to solve the observations that are presented in the use of those equipment, and that the hospital can conserve its respective sanitary license.(Author)