[TULA HANTAVIRUS IN CRIMEA].

Science.gov (United States)

Yashina, L N; Zaykovskaya, A V; Protopopova E K; Babkin, I V; Malyshev, B S; Tovpinets, N N; Evstafiev, I L

2015-01-01

Genetic evidence of the Tula virus (TULV) in Crimea region of Russia is presented. Based on the reverse transcription PCR and subsequent sequence analysis, a total of 4 RNA isolates of the TULV were identified from the tissue samples of the Altai voles Microtus obscurus captured in the Bakhchisaray district of the Republic Crimea. Phylogenetic analysis of the S-, M-, and L-segment sequences of the Crimean TULV strains showed that they formed distinct genetic lineage, Russia IV, in the TULV variant. New sequences were most closely related to the lineage Russia I sequences obtained from common vole (M. arvalis) captured in the Tula region in Central Russia

PEMEX: The Mexican state petroleum agency

International Nuclear Information System (INIS)

1993-03-01

An overview is presented of the Mexican state petroleum company PEMEX. The Mexican government created PEMEX through the expropriation of the largely foreign-dominated industry. Mexico is the world's fifth largest crude oil producer, and in 1992 PEMEX had proven reserves of 65.5 billion bbl, crude production of 2.668 million bbl/d, gas production of 3.6 billion cubic feet per day, refined product production of 1.57 million bbl/d and 18 million tonnes of petrochemical production per year. A background is presented of Mexico's economy, followed by discussion of PEMEX's market, the best sales prospects for foreign suppliers, a company profile, financial structure, exploration and production, refining, gas and basic petrochemicals, petrochemicals, transportation and distribution, research and development, recent activities, planned future activities, procurement, and market access. Extensive appendices supply relevant contacts and information. 30 tabs

Pemex sets petchem privatization plan

International Nuclear Information System (INIS)

Alvarez, C.

1993-01-01

Last week, Mexico's state-owned oil company, Petroleos Mexicanos (Pemex), was scheduled to unveil plans for the sale of basic petrochemical plants. The first privatization package - Pemex ammonia plants at Cosoleacaque and Camargo - will involve the sale of securities on the Mexican Stock Exchange, allowing a large number of Mexican investors to acquire parts of the business

Specialized consultant in radiological safety to the Ciudad del Carmen general hospital, PEMEX. III.- September and October of 2002; Asesoria especializada en seguridad radiologica al hospital general Ciudad del Carmen, PEMEX. III.- Septiembre y Octubre de 2002

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Rodriguez A, F.; Garcia A, J

2003-02-15

The Ciudad del Carmen 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)

Pemex within the context of its reserves and production crisis; Pemex en el contexto de su crisis de reservas y produccion

Energy Technology Data Exchange (ETDEWEB)

Shields, David [Energia a debate (Mexico)

2007-07-15

The Pemex's future is unknown. The Mexican enterprise (state-owned oil monopoly) has problems in the following aspects: operative, financial, administrative and labour. The deposits decrease with regard to the productivity, in fact, the confines production is worrisome. This is the moment of asking what is it going to happen with Pemex with regard to its current structure, and then to accept that the answer would be not the wanted one. [Spanish] El futuro de Pemex es incierto. La empresa estatal monopolica mexicana presenta problemas en los ambitos operativo, financiero, administrativo y laboral. Los yacimientos declinan en productividad y el horizonte de produccion es preocupante. Es hora de preguntarse que sucedera con Pemex con su estructura actual, y aceptar que esta puede no ser compatible con lo que se espera de ella.

Pemex to acquire interest in Shell Texas refinery

International Nuclear Information System (INIS)

Anon.

1992-01-01

This paper reports that Petroleos Mexicanos and Shell Oil Co. have signed a memorandum of understanding to form a joint refining venture involving Shell's 225,000 b/d Deer Park, Tex., refinery. Under the agreement, Mexico's state owned oil company is to purchase a 50% interest in the refinery, and Shell is to sell Pemex unleaded gasoline on a long term basis. Under the venture, Shell and Pemex plan to add undisclosed conversion and upgrading units tailored to process heavy Mexican crude. The revamp will allow Pemex to place more than 100,000 b/d of Mayan heavy crude on the U.S. market. Mayan accounts for 70% of Mexico's crude oil exports. In turn, Shell will sell Pemex as much as 45,000 b/d of unleaded gasoline to help meet Mexico's rapidly growing demand

New Mexican taxes to transform Pemex capital spending strategy

International Nuclear Information System (INIS)

Anon.

1994-01-01

Mexico's government this year will introduce petroleum tax reforms that will transform how its state owned petroleum company approaches capital spending. Effective Jan. 1, 1994, the Mexican government began to implement a revamped tax regime designed to accompany the breakup of Petroleos Mexicanos into four new operating subsidiaries. Each of the four new companies -- Pemex Exploration and Production, Pemex Refining, Pemex Natural Gas and Basic Petrochemicals, and Pemex Secondary Petrochemicals -- will be responsible for paying a new income tax. Levies on E and P will be tied to a ring-fence mechanism tailored after the scheme employed by the U.K. and Norwegian governments in the North Sea. The paper discusses the affected investment rationale, the North Sea ring-fence model, other tax changes, and shifting the burden

The Transformation of Oil; the Future of Pemex

Science.gov (United States)

2011-10-28

to the Mexican people that it is currently celebrated as a civic Mexican holiday . What was created in the place of the US and Anglo-Dutch companies...of Pemex, recently stated “(Pemex) is synonymous with the ultimate symbol of Mexican cultural identity: the Virgin of Guadalupe. The

Specialized consultant in radiological safety to the Ciudad del Carmen general hospital, 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 Ciudad del Carmen 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)

Sustainable development in Pemex: energy management

International Nuclear Information System (INIS)

Hernandez, C.E.R.

2002-01-01

In this paper, the author reviewed the energy management activities, over the last two years, of Petroleos Mexicanos, also known as Pemex. These activities generated substantial savings. A brief overview of Pemex was provided. The State Oil Company of Mexico, Pemex occupies the third rank of the world oil producers, and is in seventh place in terms of proven reserves. The gas production has earned the company the ninth spot, and it is in tenth place as far as its refining capacity is concerned. Pemex has annual revenues of 50, 000 million American dollars and operates in excess of 1,000 facilities. The energy management program implemented covered an experts network, training, campaigns, and information and monitoring system. Each of the components of the energy management system were reviewed. Linking each facility, the experts network was created to enhance the efficient use of energy. The Energy Saving and Environmental Protection campaign was held over the period 1999-2000 and involved the participation of 209 work sites. For its part, the Energy Efficient Use and Savings campaign took place in 2000-2001, involving 205 work sites. Both resulted in substantial savings. An internal carbon dioxide trading system was also implemented to improve air quality, and was designed to provide a cap and trade carbon dioxide emissions. The next phase involved the implementation of an information and monitoring system, which defined an Energy Consumption Index used in monthly reports. The next steps in the process were briefly outlined. 5 figs

Pemex: ¿La no empresa de todos los mexicanos?

OpenAIRE

Víctor Gerardo Carreón Rodríguez; Miriam Grunstein Dickter

2012-01-01

Although there exist the conditions and reasons to let Pemex become a trully state owned, commercialy oriented, oil company, in reality Pemex does not behave as such, due to the limitations posed by its legal framework. Such legal framework poses severe limitations to Pemex’s capacity in making the decisions which would enable it to perform in its fullest commercial potential. Pemex’s transformation into a true publicly owned company does not require it to abandon its structure of public law ...

Experiences of PEMEX in CO{sub 2} re-injection; Experiencias de Pemex en reinyeccion de CO{sub 2}

Energy Technology Data Exchange (ETDEWEB)

Sanchez Bujanos, Jose Luis [PEMEX (Mexico)

2008-07-15

Mexico enters the processes of secondary oil recovery the years 50s, by means of water injection. The CO{sub 2} injection is one of the techniques that better results produce in the oil recovery. In this presentation the strategic goals that have been determined within PEMEX Exploracion y Produccion (PEP) are mentioned, and which are the projects of CO{sub 2} injection for oil recovery already existing in Mexico. [Spanish] Mexico entra a los procesos de recuperacion secundaria de petroleo en los anos 50s, mediante inyeccion de agua. La inyeccion de CO{sub 2} es una de las tecnicas que mejores resultados produce en la recuperacion de petroleo. En esta presentacion se mencionan las metas estrategicas que se han fijado dentro de Pemex Exploracion y Produccion (PEP) y cuales son los proyectos de inyeccion de CO{sub 2} para recuperacion de petroleo, existentes actualmente en Mexico.

Quantifying Pemex E and P benefits from foreign strategic associations

International Nuclear Information System (INIS)

Baker, G.

1993-01-01

The recent critique by the Heritage Foundation of the management of Mexico's petroleum sector deserves attention by oil industry observers of Mexico as well as government and academic analysts. The foundation argues that sweeping changes are needed-for Mexico's own good-in upstream and downstream policy. The following analysis presents one form of quantifying the upstream argument: the Mexican government stands to gain $5.7 billion/year in taxable revenue from state petroleum company Petroleos Mexicanos by 2000 from strategic associations with international petroleum companies. In addition, there are efficiency advantages that Pemex would gain by strategic associations with international petroleum companies. The ripple effects would include not only oil production and tax revenue increases from Pemex operations but also the advantages of new management skills, new sources of funding and technology, and lower operating and overhead costs in Pemex. It will not be possible, however, for the Mexican government to choose one or more strategic partners by quantitative methods alone. To the contrary, a significant measure of trust will be required

Oil fiscal regimes and national oil companies: A comparison between Pemex and Petrobras

International Nuclear Information System (INIS)

Ramírez-Cendrero, Juan M.; Paz, María J.

2017-01-01

Analysis of the determinants of the performance of national oil companies (NOCs) is and has always been among the most discussed topics in specialized literature. In this context, the uneven path experienced by two major Latin American NOCs – Petrobras and Pemex – is striking. Our work seeks to explain the uneven performance, focusing on the productive aspects. In particular, we analyze the oil fiscal regimes in Brazil and Mexico as a very crucial aspect – though not the only one – within oil-rich countries that may shed light on the disparities between Petrobras and Pemex. The contribution of our work to the existing literature derives from the relationship that we establish between the characteristics of the respective oil fiscal regimes and the productive performance of the two NOCs, with special consideration paid to the ways in which a fiscal regime contributes, or not, to promoting and guiding the investment efforts of companies. We compare investment, production, and reserve indicators of Pemex and Petrobras and conclude that the Mexican and Brazilian oil fiscal regimes can largely explain the productive and investor performance of both NOCs. - Highlights: • We analyze the oil fiscal regimes in Brazil and Mexico. • We outline the major features in both national oil companies, Petrobras and Pemex. • We compare investment, production, and reserve indicators of Pemex and Petrobras. • We conclude that the OFRs largely explain the productive performance of the NOCs.

Cooling system at the compressors air inlet of the gas turbines from the Tula`s combined cycle central; Sistema de enfriamiento en la succion del compresor de las turbinas de gas de la central de ciclo combinado de Tula

Energy Technology Data Exchange (ETDEWEB)

Gonzalez F, Oscar [Comision Federal de Electricidad, Tula (Mexico); Romero Paredes, Hernando; Vargas, Martin; Gomez, Jose Francisco [Universidad Autonoma Metropolitana-Iztapalapa, Mexico, D. F. (Mexico)

1996-12-31

It has been formerly evaluated that it is possible to enhance notably the electric power generation in gas turbine power plants by cooling the air at the compressor inlet. It has been pointed out that provided a source of waste heat is available it can be very attractive the use of absorption refrigeration systems. In this paper the technical and the economical benefits of bringing the air inlet temperature down 8 Celsius degrees of the four gas turbines of the Combined Cycle Central of Tula, in the State of Hidalgo (combined cycle central-Tula) are evaluated. The results show that it is possible to achieve an efficiency enhancement of at least 1%, and that in very warm days up to 48 additional Megawatts can be generated, or about 10% of the installed capacity. The final economic result is very encouraging and an annual economical benefit in the order of 50 million pesos can be obtained and the refrigeration units can be amortized in approximately one year. [Espanol] Se ha evaluado anteriormente que es posible mejorar notablemente la capacidad de generacion electrica en plantas que utilizan turbinas de gas, mediante el enfriamiento del aire de succion del compresor. Se ha senalado que en la medida en que se encuentre disponible una fuente termica de desecho puede ser muy atractivo el uso de sistemas de refrigeracion por absorcion. En el presente trabajo se evaluan los beneficios tecnicos y economicos que puede tener el llevar el aire de succion hasta una temperatura de 8 grados Celsius, de las cuatro unidades de gas de la Central de Ciclo Combinado de Tula, Hidalgo (CCC-Tula). Los resultados muestran que es posible alcanzar un aumento en la eficiencia de al menos 1% y que se pueden generar, en dias muy calurosos, hasta 48 MW extras, equivalente al 10% de la capacidad instalada. El resultado economico final es muy alentador y puede llegar a tenerse un beneficio economico del orden de los 50 millones de pesos anuales y las unidades de refrigeracion podran pagarse en

Cooling system at the compressors air inlet of the gas turbines from the Tula`s combined cycle central; Sistema de enfriamiento en la succion del compresor de las turbinas de gas de la central de ciclo combinado de Tula

Energy Technology Data Exchange (ETDEWEB)

Gonzalez F, Oscar [Comision Federal de Electricidad, Tula (Mexico); Romero Paredes, Hernando; Vargas, Martin; Gomez, Jose Francisco [Universidad Autonoma Metropolitana-Iztapalapa, Mexico, D. F. (Mexico)

1997-12-31

It has been formerly evaluated that it is possible to enhance notably the electric power generation in gas turbine power plants by cooling the air at the compressor inlet. It has been pointed out that provided a source of waste heat is available it can be very attractive the use of absorption refrigeration systems. In this paper the technical and the economical benefits of bringing the air inlet temperature down 8 Celsius degrees of the four gas turbines of the Combined Cycle Central of Tula, in the State of Hidalgo (combined cycle central-Tula) are evaluated. The results show that it is possible to achieve an efficiency enhancement of at least 1%, and that in very warm days up to 48 additional Megawatts can be generated, or about 10% of the installed capacity. The final economic result is very encouraging and an annual economical benefit in the order of 50 million pesos can be obtained and the refrigeration units can be amortized in approximately one year. [Espanol] Se ha evaluado anteriormente que es posible mejorar notablemente la capacidad de generacion electrica en plantas que utilizan turbinas de gas, mediante el enfriamiento del aire de succion del compresor. Se ha senalado que en la medida en que se encuentre disponible una fuente termica de desecho puede ser muy atractivo el uso de sistemas de refrigeracion por absorcion. En el presente trabajo se evaluan los beneficios tecnicos y economicos que puede tener el llevar el aire de succion hasta una temperatura de 8 grados Celsius, de las cuatro unidades de gas de la Central de Ciclo Combinado de Tula, Hidalgo (CCC-Tula). Los resultados muestran que es posible alcanzar un aumento en la eficiencia de al menos 1% y que se pueden generar, en dias muy calurosos, hasta 48 MW extras, equivalente al 10% de la capacidad instalada. El resultado economico final es muy alentador y puede llegar a tenerse un beneficio economico del orden de los 50 millones de pesos anuales y las unidades de refrigeracion podran pagarse en

Winning PEMEX consulting contracts through international bidding : sharing a Canadian success strategy

International Nuclear Information System (INIS)

Lin, J.

1999-01-01

A series of brief notes and overhead viewgraphs accompanied this presentation which described how Enbridge Technology obtained a contract with Mexico's PEMEX Refining through an international open bid. The scope of the contract was to advise PEMEX on how to modernize and automate their national liquids pipeline system. The value of the contract was US$11.6 million. The time span was from April 1998 to October 1999. A flow chart was included which illustrated the typical international bidding process. Enbridge prepared their bid by paying attention to bid basis details and emphasized their technical qualifications. 1 fig

Evolution and results of the energy conservation programs in PEMEX-REFINACION; Evolucion y resultados de los programas de ahorro de energia en PEMEX-REFINACION

Energy Technology Data Exchange (ETDEWEB)

Machado Soberanes, J.A. [PEMEX-REFINACION, Mexico, D. F. (Mexico)

1995-12-31

The nature of the industrial activities of PEMEX-REFINACION aimed at the energy production area in the refineries of the system, requires for its operation of an energy consumption that represents a highly significant amount among its total operation costs. These energy costs are being reduced in figures higher than 50% in 1990 to 43% in 1993 through coordination programs and investments oriented to the efficient use of energy and losses control. This paper presents the historical description of the developments, advances and achievements that have been obtained up to date in this subject in the production plant of PEMEX-REFINACION, beginning with the intensification of the program of energy conservation and efficient use of energy in 1990. As a substantial part of this paper the different actions being applied are listed right from the beginning of the program with their corresponding cost-benefit analysis, in order to eliminate the energy wastes that correspond fundamentally to short term measures requiring minimum investments and medium term actions with moderate investments. Likewise, the plan of action to be implemented is presented for the operation optimization of the system and the existing equipment, with the long term actions that for their execution require of large investments. The efforts made in the last 4 years in the system oil refineries have been important, which has been reflected in the reduction of energy consumption in an average of 10,000 equivalent barrels of oil (EBCO) per day; nevertheless there are still great opportunity areas to reach the energy efficiency levels and profitability of the world leading refineries, which is consistent with the conceptual frame of the 1995- 2000 business plan structured for PEMEX-REFINACION. [Espanol] La naturaleza misma de las actividades industriales de PEMEX-REFINACION, enfocada al area de produccion de energeticos en las refinerias del sistema, requiere para sus operaciones de un consumo de energia que

Evolution and results of the energy conservation programs in PEMEX-REFINACION; Evolucion y resultados de los programas de ahorro de energia en PEMEX-REFINACION

Energy Technology Data Exchange (ETDEWEB)

Machado Soberanes, J A [PEMEX-REFINACION, Mexico, D. F. (Mexico)

1996-12-31

The nature of the industrial activities of PEMEX-REFINACION aimed at the energy production area in the refineries of the system, requires for its operation of an energy consumption that represents a highly significant amount among its total operation costs. These energy costs are being reduced in figures higher than 50% in 1990 to 43% in 1993 through coordination programs and investments oriented to the efficient use of energy and losses control. This paper presents the historical description of the developments, advances and achievements that have been obtained up to date in this subject in the production plant of PEMEX-REFINACION, beginning with the intensification of the program of energy conservation and efficient use of energy in 1990. As a substantial part of this paper the different actions being applied are listed right from the beginning of the program with their corresponding cost-benefit analysis, in order to eliminate the energy wastes that correspond fundamentally to short term measures requiring minimum investments and medium term actions with moderate investments. Likewise, the plan of action to be implemented is presented for the operation optimization of the system and the existing equipment, with the long term actions that for their execution require of large investments. The efforts made in the last 4 years in the system oil refineries have been important, which has been reflected in the reduction of energy consumption in an average of 10,000 equivalent barrels of oil (EBCO) per day; nevertheless there are still great opportunity areas to reach the energy efficiency levels and profitability of the world leading refineries, which is consistent with the conceptual frame of the 1995- 2000 business plan structured for PEMEX-REFINACION. [Espanol] La naturaleza misma de las actividades industriales de PEMEX-REFINACION, enfocada al area de produccion de energeticos en las refinerias del sistema, requiere para sus operaciones de un consumo de energia que

Chicxulub Impact Crater and Yucatan Carbonate Platform - PEMEX Oil Exploratory Wells Revisited

Science.gov (United States)

Pérez-Drago, G.; Gutierrez-Cirlos, A. G.; Pérez-Cruz, L.; Urrutia-Fucugauchi, J.

2008-12-01

Geophysical oil exploration surveys carried out by PEMEX in the 1940's revealed occurrence of an anomalous pattern of semi-circular concentric gravity anomalies. The Bouguer gravity anomalies covered an extensive area over the flat carbonate platform in the northwestern Yucatan Peninsula; strong density contrasts were suggestive of a buried igneous complex or basement uplift beneath the carbonates, which was referred as the Chicxulub structure. The exploration program carried out afterwards included a drilling program, starting with Chicxulub-1 well in 1952 and comprising eight deep boreholes through the 1970s. An aeromagnetic survey in late 1970's showed high amplitude anomalies in the gravity anomaly central sector. Thus, research showing Chicxulub as a large complex impact crater formed at the K/T boundary was built on the PEMEX decades-long exploration program. Despite frequent reference to PEMEX information and samples, original data and cores have not been openly available for detailed evaluation and integration with results from recent investigations. Core samples largely remain to be analyzed and interpreted in the context of recent marine, aerial and terrestrial geophysical surveys and the drilling/coring projects of UNAM and ICDP. In this presentation we report on the stratigraphy and paleontological data for PEMEX wells: Chicxulub- 1 (1582m), Sacapuc-1 (1530m), Yucatan-6 (1631m), Ticul-1 (3575m) Yucatan-4 (2398m), Yucatan-2 (3474m), Yucatan-5A (3003m) and Yucatan-1 (3221m). These wells remain the deepest drilled in Chicxulub, providing samples of impact lithologies, carbonate sequences and basement, which give information on post- and pre-impact stratigraphy and crystalline basement. We concentrate on stratigraphic columns, lateral correlations and integration with UNAM and ICDP borehole data. Current plans for deep drilling in Chicxulub crater target the peak ring and central sector, with offshore and onshore boreholes proposed to the IODP and ICDP

Chicxulub Impact Crater and Yucatan Carbonate Platform - Stratigraphy and Petrography of PEMEX Borehole Cores

Science.gov (United States)

Gutierrez-Cirlos, A. G.; Perez-Drago, G.; Perez-Cruz, L.; Urrutia-Fucugauchi, J.

2008-12-01

Chicxulub impact crater is the best preserved of the three large multi-ring structures documented in the terrestrial record. Chicxulub, formed 65 Ma ago, is associated with the Cretaceous/Tertiary (K/T) boundary layer and the impact related to the organism extinctions and events marking the boundary. The crater is buried under Tertiary sediments in the Yucatan carbonate platform in the southern Gulf of Mexico. The structure was initially recognized from gravity and magnetic anomalies in the PEMEX exploration surveys of the northwestern Yucatan peninsula. The exploration program included eight deep boreholes completed from 1952 through the 1970s. The investigations showing Chicxulub as a large complex impact crater formed at the K/T boundary have relayed on the PEMEX decades-long exploration program. However, despite frequent use of PEMEX information and core samples, significant parts of the database and cores remain to be evaluated, analyzed and incorporated with results from recent efforts. Access to PEMEX Core Repository has permitted to study the cores and collect new samples from some of the boreholes. We analyzed cores from Yucatan-6, Chicxulub-1, Sacapuc-1, Ticul-1, Yucatan-1 and Yucatan-4 boreholes to make new detailed stratigraphic correlations and petrographic characterization, using information from PEMEX database and the recent studies. In C-1 cores, breccias show 4-8 cm clasts of fine grained altered melt dispersed in a medium to coarse grained matrix composed of pyroxene and feldspar with little macroscopic alteration. Clasts contain 0.2 to 0.1 cm fragments of silicate material (basement) that show variable degrees of digestion. Melt samples from C-1 N10 comes from interval 1,393-1,394 m, and show a fine-to-medium grained coherent microcrystalline groundmass. Melt and breccias in Y-6 extend from about 1,100 m to more than 1,400 m. Sequence is well sorted, with an apparent gradation in both the lithic and melt clasts. In this presentation we report on

Tula virus in populations of small terrestrial mammals in a rural landscape

Czech Academy of Sciences Publication Activity Database

Heroldová, Marta; Pejčoch, M.; Bryja, Josef; Jánová, Eva; Suchomel, J.; Tkadlec, Emil

2010-01-01

Roč. 10, č. 6 (2010), s. 599-603 ISSN 1530-3667 R&D Projects: GA MZe QH72075 Institutional research plan: CEZ:AV0Z60930519 Keywords : crop fields * host species * rural habitat * Tula virus antigen Subject RIV: EH - Ecology, Behaviour Impact factor: 2.733, year: 2010

The impact of Mexico's CRE regulation on Pemex marketing

International Nuclear Information System (INIS)

Martinez, A.

1997-01-01

The past, present and future of the natural gas industry in Mexico was reviewed. As far as the past is concerned, Pemex-Gas was a state monopoly, not subject to an independent regulatory authority. It was primarily concerned with providing natural gas to domestic consumers, it engaged in minimal marketing activities, and it was highly centralized. In the country as a whole, there was a notable indifference to regulation, and an almost total absence of a regulatory culture. Natural gas was seen as a minor byproduct of petroleum, not as an engine of economic growth. Reforms introduced in May 1995 attempt to institute revolutionary changes by creating a federal regulatory commission, (Comision Reguladora de Energia, CRE for short), and strongly encouraging private sector involvement in the storage, transmission and distribution of natural gas, while reserving exclusive jurisdiction for exploration and production to the State. Provisions of the new natural gas legislation were explained, including the impact on transportation, distribution and retail sales by the State Gas company, Pemex-Gas, and its assigned leading role in bringing about the legislated changes. A fully functioning open access system is expected to be in place by November 1997

New pemex agency, smog checks greet Mexican LPG vehicle users

International Nuclear Information System (INIS)

Anon.

1992-01-01

This paper reports that the relaxation of prohibitions on the use of propane as a motor fuel has spurred sizeable business activity in carburetion and higher demand for LPG throughout Mexico and particularly in Mexico City. However, a number of unforeseen problems have developed that required tough, immediate solutions. After the alternative fuels project began at city hall in Mexico City, publicity spread nationwide, reportedly spurring conversion activity in many other cities. That led to additional demand for fuel of a magnitude that few people had anticipated. In order to assume control of the situation, the national oil company, Pemex, established an official LPG Motor Fuel Department on June 1. Operating in conjunction with the Ministry of Industry, the new department has been busy registering every major propane-powered fleet in the country. Most important, the rate of conversion work must now be pegged to the availability of fuel. It is believed that conversion activity has become more evenly paced since the new Pemex agency took over.over

Contribution of Tula Refinery flaring emissions to the Mexico megacity

Science.gov (United States)

Almanza, Victor; Molina, Luisa; Sosa, Gustavo

2013-04-01

Flaring is an important source of greenhouse gases, particulate matter and Volatile Organic Compounds (VOCs) in both upstream and downstream operations in the oil and gas industry. In 2010 Mexico was the eleventh emitting country with 2.5 billion cubic meters of gas flared (World Bank, 2012). Black carbon (a component of soot) emissions from flaring facilities are of particular interest because soot is considered a short-lived climate forcer (SLCF) (UNEP, 2011). In 2011 there were 23 megacities of at least 10 million inhabitants. It is expected that this number increase to 37 by 2025, which will include one more in Northern America (NA) and two more in Latin America (UN, 2012). International collaborative projects like MILAGRO in NA and MEGAPOLI/CityZen in Europe, have been conducted to assess the impact of megacities air pollution at several scales. The former focused on the air pollution plume of Mexico City Metropolitan Area (MCMA), the largest megacity in NA. This work studies the contribution of flaring emissions from Tula Refinery to regional air quality. This is accomplished in two steps. First, the flame of a representative sour gas flare is modeled with a CFD combustion code in order to estimate emission rates of combustion by-products of interest for air quality. Mass flow rates of acetylene, ethylene, nitrogen oxides, carbon monoxide, soot and sulfur dioxide are obtained. The emission rates of NO2 and SO2 are compared with measurements obtained at Tula as part of MILAGRO field campaign. The rates of soot, VOCs and CO emissions are compared with estimates obtained by Instituto Mexicano del Petróleo (IMP). The second stage takes the flaring emission rates of the aforementioned species as inputs to WRF-Chem in order to simulate the chemical transport of the plume from 22 March to 27 March of 2006. The air quality model presented reliable performance of the resolved meteorology, with respect to the Mean Absolute Error (MAE), Root Mean Square Error (RMSE

The Zenith Passage of the Sun at the Mesoamerican Sites of Tula and Chichen Itza

OpenAIRE

Sparavigna, Amelia Carolina

2017-01-01

International audience; Using software SunCalc.org we can easily observe the alignments of buildings along the direction of the sunset on the day of the zenith passage of the sun, at two Mesoamerican sites. These sites are those of Tula and Chichen Itza.

Deep Drilling Into the Chicxulub Impact Crater: Pemex Oil Exploration Boreholes Revisited

Science.gov (United States)

Fucugauchi, J. U.; Perez-Cruz, L.

2007-05-01

The Chicxulub structure was recognized in the 1940´s from gravity anomalies in oil exploration surveys by Pemex. Geophysical anomalies occur over the carbonate platform in NW Yucatan, where density and magnetic susceptibility contrasts with the carbonates suggested a buried igneous complex or basement uplift. The exploration program developed afterwards included several boreholes, starting with the Chicxulub-1 in 1952 and eventually comprising eight deep boreholes completed through the 1970s. The investigations showing Chicxulub as a large impact crater formed at the K/T boundary have relayed on the Pemex decades-long exploration program. Despite frequent reference to Pemex information, original data have not been openly available for detailed evaluation and incorporation with results from recent efforts. Logging data and core samples remain to be analyzed, reevaluated and integrated in the context of recent marine, aerial and terrestrial geophysical surveys and the drilling/coring projects of UNAM and ICDP. In this presentation we discuss the paleontological data, stratigraphic columns and geophysical logs for the Chicxulub-1 (1582m), Sacapuc-1 (1530m), Yucatan-6 (1631m) and Ticul-1 (3575m) boreholes. These boreholes remain the deepest ones drilled in Chicxulub and the only ones providing samples of the melt-rich breccias and melt sheet. Other boreholes include the Y1 (3221m), Y2 (3474m), Y4 (2398m) and Y5A (3003m), which give information on pre-impact stratigraphy and crystalline basement. We concentrate on log and microfossil data, stratigraphic columns, lateral correlation, integration with UNAM and ICDP borehole data, and analyses of sections of melt, impact breccias and basal Paleocene carbonates. Current plans for deep drilling in Chicxulub crater focus in the peak ring zone and central sector, with proposed marine and on-land boreholes to the IODP and ICDP programs. Future ICDP borehole will be located close to Chicxulub-1 and Sacapuc-1, which intersected

Mexico: Pemex caught between revolutionary heritage and the market

International Nuclear Information System (INIS)

Rousseau, Isabelle

2016-01-01

Some constitutional modifications adopted in Mexico in 2013 marked an important watershed in the history and development of the Mexican oil industry: by opening this sector to private national or foreign investors, they make possible the emergence of an actual energy market. They also put an end to the monopoly of the Mexican public company, Pemex. In this article, the author proposes an historical perspective in order to better understand the influence of the Mexican Constitution of 1917 and of the oil industry nationalisation act of 1938 on the creation and development of the Mexican oil industry

Energy conservation programs of Pemex exploration and production, south region; Programas de ahorro de energia en Pemex exploracion y produccion, region sur

Energy Technology Data Exchange (ETDEWEB)

Gonzalez Milla, Guillermo; Garcia Juarez, Francisco; Alarcon Aleman, Jose Mauricio [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1999-12-31

The technological developments of energy economizing equipment constitute a powerful tool for the conservation and saving of the electric energy in new or existing installations. Petroleos Mexicanos (PEMEX) Exploration and Production initiated in 1997 a program for energy economizing in the South region, for which the Instituto de Investigaciones Electricas, through its Unit for the Use of Energy, collaborated performing energy assessments in 115 buildings of the above mentioned region. This paper describes the employed methodology to carry on the energy assessment, which consisted in an analysis of each building and different options for energy economizing were presented, which was accompanied with cost-benefit studies. The results obtained show that the air conditioning equipment and lighting represent the most important loads permanently connected, therefore the study was concentrated in these two loads [Espanol] Los desarrollos tecnologicos de equipos ahorradores de energia constituyen una poderosa herramienta para la conservacion y el ahorro de energia electrica en instalaciones nuevas o existentes. Petroleos Mexicanos (PEMEX) Exploracion y Produccion inicio en 1997 un programa para el ahorro de energia en la region sur, para lo cual el Instituto de Investigaciones Electricas, a traves de la Unidad de Uso de Energia, colaboro realizando diagnosticos energeticos en 115 edificios de dicha region. En este documento se describe la metodologia utilizada para realizar el diagnostico energetico, el cual consistio en un analisis de cada edificio y se presentaron diversas opciones para ahorrar energia, lo cual se acompano de estudios de costo-beneficio. Los resultados obtenidos muestran que los equipos de aire acondicionado e iluminacion representan la parte mas importante de las cargas conectadas permanentemente, por lo que el estudio se concentro en estas dos cargas

Energy conservation programs of Pemex exploration and production, south region; Programas de ahorro de energia en Pemex exploracion y produccion, region sur

Energy Technology Data Exchange (ETDEWEB)

Gonzalez Milla, Guillermo; Garcia Juarez, Francisco; Alarcon Aleman, Jose Mauricio [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1998-12-31

The technological developments of energy economizing equipment constitute a powerful tool for the conservation and saving of the electric energy in new or existing installations. Petroleos Mexicanos (PEMEX) Exploration and Production initiated in 1997 a program for energy economizing in the South region, for which the Instituto de Investigaciones Electricas, through its Unit for the Use of Energy, collaborated performing energy assessments in 115 buildings of the above mentioned region. This paper describes the employed methodology to carry on the energy assessment, which consisted in an analysis of each building and different options for energy economizing were presented, which was accompanied with cost-benefit studies. The results obtained show that the air conditioning equipment and lighting represent the most important loads permanently connected, therefore the study was concentrated in these two loads [Espanol] Los desarrollos tecnologicos de equipos ahorradores de energia constituyen una poderosa herramienta para la conservacion y el ahorro de energia electrica en instalaciones nuevas o existentes. Petroleos Mexicanos (PEMEX) Exploracion y Produccion inicio en 1997 un programa para el ahorro de energia en la region sur, para lo cual el Instituto de Investigaciones Electricas, a traves de la Unidad de Uso de Energia, colaboro realizando diagnosticos energeticos en 115 edificios de dicha region. En este documento se describe la metodologia utilizada para realizar el diagnostico energetico, el cual consistio en un analisis de cada edificio y se presentaron diversas opciones para ahorrar energia, lo cual se acompano de estudios de costo-beneficio. Los resultados obtenidos muestran que los equipos de aire acondicionado e iluminacion representan la parte mas importante de las cargas conectadas permanentemente, por lo que el estudio se concentro en estas dos cargas

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 Salamanca regional hospital, PEMEX. I. - July of 2001; Asesoria especializada en seguridad radiologica al hospital regional Salamanca, PEMEX. I.- Julio de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A

2001-09-15

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 Salamanca regional hospital, PEMEX. V. - November of 2001; Asesoria especializada en seguridad radiologica al hospital regional Salamanca, 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 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 Salamanca regional hospital, PEMEX. III. - September of 2001; Asesoria especializada en seguridad radiologica al hospital regional Salamanca, PEMEX. III.- Septiembre 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 Salamanca regional hospital, PEMEX. II. - August of 2001; Asesoria especializada en seguridad radiologica al hospital regional Salamanca, PEMEX. II.- Agosto 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 Salamanca regional hospital, PEMEX. IV. - October of 2001; Asesoria especializada en seguridad radiologica al hospital regional Salamanca, PEMEX. IV.- Octubre 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)

Retrieval columns of SO2 in industrial chimneys using DOAS passive in traverse

Science.gov (United States)

Galicia Mejía, Rubén; de la Rosa Vázquez, José Manuel; Sosa Iglesias, Gustavo

2011-10-01

The optical Differential Optical Absorption Spectroscopy (DOAS) is a technique to measure pollutant emissions like SO2, from point sources and total fluxes in the atmosphere. Passive DOAS systems use sunlight like source. Measurements with such systems can be made in situ and in real time. The goal of this work is to report the implementation of hardware and software of a portable system to evaluate the pollutants emitted in the atmosphere by industrial chimneys. We show SO2 measurements obtained around PEMEX refinerys in Tula Hidalgo that enables the identification of their pollution degree with the knowledge of speed wind.

Specialized consultant in radiological safety to the Reforma peripheral clinic, PEMEX. - I. - May-June of 2003; Asesoria especializada en seguridad radiologica a la clinica periferica Reforma, PEMEX.- I.- Mayo-Junio de 2003

Energy Technology Data Exchange (ETDEWEB)

Torres P, A.; Garcia A, J.; Rodriguez A, F

2003-07-15

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 Villahermosa regional hospital, PEMEX. III. - September and October of 2002; Asesoria especializada en seguridad radiologica al hospital regional Villahermosa, PEMEX, III.- Septiembre y Octubre de 2002

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Rodriguez A, F.; Garcia A, J

2003-02-15

The Villahermosa 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 radiolpogic 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 Villahermosa regional hospital, PEMEX. IV. - November and December of 2002; Asesoria especializada en seguridad radiologica al Villahermosa hospital regional, PEMEX, IV.- Noviembre y Diciembre de 2002

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Hernandez C, J.E.; Rodriguez A, F.; Garcia A, J

2003-02-15

The Villahermosa 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)

Heavy Metals and Trace Elements Atmospheric Deposition Studies in Tula Region Using Moss Biomonitors Technique

CERN Document Server

Ermakova, E V; Steinnes, E

2002-01-01

For the first time the moss biomonitors technique was used in air pollution studies in Tula Region (Central Russia), applying NAA, AAS. Moss samples were collected at 83 sites in accordance with the sampling strategy adopted in European projects on biomonitoring atmospheric deposition. A wide set of trace elements in mosses was determined. The method of epithermal neutron activation at IBR-2 reactor of FLNP JINR has made it possible to identify 33 elements (Na, Mg, Al, Cl, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, As, Br, Rb, Sr, Mo, Sb, I, Cs, Ba, La, Ce, Sm, Tb, Yb, Hf, Ta, W, Th, U) in the large-scale concentration range - from 10000 ppm for K to 0,001 ppm for Tb and Ta. Cu, Cd and Pb were determined by the flame AAS in the Norwegian Institute of Science and Technology. Using the graphical technique and principal component analysis allowed to separate plant, crustal and general pollution components in the moss. The obtained data will be used for constructing coloured maps of the distribution of elements over t...

Specialized consultant in radiological safety to the Reforma peripheral clinic, PEMEX. - III. - September and October of 2002; Asesoria especializada en seguridad radiologica a la clinica periferica Reforma, PEMEX.- III.- Septiembre y Octubre de 2002

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Rodriguez A, F.; Garcia A, J

2003-02-15

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 Macuspana peripheral clinic, PEMEX. - IV. - November and December of 2002; Asesoria especializada en seguridad radiologica a la clinica periferica Macuspana, PEMEX.- IV.- Noviembre y Diciembre de 2002

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Hernandez C, J. E.; Garcia A, J.; Rodriguez A, F

2003-02-15

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 Reforma peripheral clinic, PEMEX. - IV. - November and December of 2002; Asesoria especializada en seguridad radiologica a la clinica periferica Reforma, PEMEX.- IV.- Noviembre y Diciembre de 2002

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A; Hernandez C, J E; Rodriguez A, F; Garcia A, J

2003-02-15

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 quipment 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)

Tula hantavirus NSs protein accumulates in the perinuclear area in infected and transfected cells.

Science.gov (United States)

Virtanen, Jussi Oskari; Jääskeläinen, Kirsi Maria; Djupsjöbacka, Janica; Vaheri, Antti; Plyusnin, Alexander

2010-01-01

The small RNA segment of some hantaviruses (family Bunyaviridae) encodes two proteins: the nucleocapsid protein and, in an overlapping reading frame, a non-structural (NSs) protein. The hantavirus NSs protein, like those of orthobunya- and phleboviruses, counteracts host innate immunity. Here, for the first time, the NSs protein of a hantavirus (Tula virus) has been observed in infected cells and shown to localize in the perinuclear area. Transiently expressed NSs protein showed similar localization, although the kinetics was slightly different, suggesting that to reach its proper location in the infected cell, the NSs protein does not have to cooperate with other viral proteins.

Specialized consultant in radiological safety to the Salamanca regional hospital, PEMEX. III. - September 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 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 Salamanca regional hospital, PEMEX. V. - November 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 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 Salamanca regional 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 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 Salamanca regional hospital, PEMEX. I. - July of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.

2001-09-01

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 Salamanca regional 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 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 Salamanca regional hospital, PEMEX. II. - August 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 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)

Tula and Puumala hantavirus NSs ORFs are functional and the products inhibit activation of the interferon-beta promoter.

Science.gov (United States)

Jääskeläinen, Kirsi M; Kaukinen, Pasi; Minskaya, Ekaterina S; Plyusnina, Angelina; Vapalahti, Olli; Elliott, Richard M; Weber, Friedemann; Vaheri, Antti; Plyusnin, Alexander

2007-10-01

The S RNA genome segment of hantaviruses carried by Arvicolinae and Sigmodontinae rodents encodes the nucleocapsid (N) protein and has an overlapping (+1) open reading frame (ORF) for a putative nonstructural protein (NSs). The aim of this study was to determine whether the ORF is functional. A protein corresponding to the predicted size of Tula virus (TULV) NSs was detected using coupled in vitro transcription and translation from a cloned S segment cDNA, and a protein corresponding to the predicted size of Puumala virus (PUUV) NSs was detected in infected cells by Western blotting with an anti-peptide serum. The activities of the interferon beta (IFN-beta) promoter, and nuclear factor kappa B (NF-kappaB)- and interferon regulatory factor-3 (IRF-3) responsive promoters, were inhibited in COS-7 cells transiently expressing TULV or PUUV NSs. Also IFN-beta mRNA levels in IFN-competent MRC5 cells either infected with TULV or transiently expressing NSs were decreased. These data demonstrate that Tula and Puumala hantaviruses have a functional NSs ORF. The findings may explain why the NSs ORF has been preserved in the genome of most hantaviruses during their long evolution and why hantavirus-infected cells secrete relatively low levels of IFNs. (c) 2007 Wiley-Liss, Inc.

Specialized consultant in radiological safety to the north central hospital of high speciality, PEMEX. II. - August of 2001; Asesoria especializada en seguridad radiologica al hospital central norte de alta especialidad, PEMEX II.- Agosto de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J

2001-10-15

The north central hospital of high speciality, 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)0.

Specialized consultant in radiological safety to the north central hospital of high speciality, PEMEX. I. - July of 2001; Asesoria especializada en seguridad radiologica al hospital central norte de alta especialidad, PEMEX I.- Julio de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A

2001-09-15

The north central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. I. - July of 2001; Asesoria especializada en seguridad radiologica al hospital central sur de alta especialidad, PEMEX I.- Julio de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J

2001-09-15

The south central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. II.- August of 2001; Asesoria especializada en seguridad radiologica al hospital central sur de alta especialidad, PEMEX II.- Agosto de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J

2001-12-15

The south central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. III.- September of 2001; Asesoria especializada en seguridad radiologica al hospital central sur de alta especialidad, PEMEX III.- Septiembre de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J

2001-12-15

The south central hospital of high speciality, 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 north central hospital of high speciality, PEMEX. III. - September of 2001; Asesoria especializada en seguridad radiologica al hospital central norte de alta especialidad, PEMEX III.- Septiembre de 2001

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A; Vizuet G, J; Benitez S, J A; Rodriguez A, F; Garcia A, J

2001-12-15

The north central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. V. - November of 2001; Asesoria especializada en seguridad radiologica al hospital central sur de alta especialidad, 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 south central hospital of high speciality, 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.(Autho000.

Specialized consultant in radiological safety to the Reforma peripheral clinic, PEMEX. - I. - May-June of 2003

International Nuclear Information System (INIS)

Torres P, A.; Garcia A, J.; Rodriguez A, F.

2003-07-01

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)

Explosion accident at LPG storage in Mexico. Bleve of PEMEX Co

Energy Technology Data Exchange (ETDEWEB)

Sakurai Yoshio (The Yasuda Fire and Marine Insurance Co., Ltd., Tokyo, (Japan))

1989-09-01

This paper reports the BLEVE (Boiling Expanding Vapor Explosion) which occurred at LPG storage-supply plant of PEMEX Co. (Petroles Mexicanos Co.) in San Juan Ixhuatepec, Mexico on 19th of Nov., 1984. As the actual spot of the explosion is close to residential areas, 50 persons died, 200 was missing, and 723 were injured. Another adjacent LPG storage burned down by the spreading fire, and 200,000 residents retired to safety places. A part of the LPG supply Pipes was destroyed, from where LPG leaked and ignited. During one hour and a half, 15 violent explosions occurred, 9 of which were recorded by the seismometer set up at University of Mexico, about 10km apart. 3 refs., 5 figs.

Specialized consultant in radiological safety to the north central hospital of high speciality, PEMEX. I. - May-June of 2003; Asesoria especializada en seguridad radiologica al hospital central norte de alta especialidad, PEMEX I.- Mayo-Junio de 2003

Energy Technology Data Exchange (ETDEWEB)

Angeles C, A.; Camacho V, B.; Rodriguez A, F

2003-09-15

The north central hospital of high speciality, 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 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 Villahermosa regional hospital, 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 Villahermosa 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 radiolpogic 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 Villahermosa regional hospital, PEMEX. IV. - November and December of 2002

International Nuclear Information System (INIS)

Angeles C, A.; Hernandez C, J.E.; Rodriguez A, F.; Garcia A, J.

2003-02-01

The Villahermosa 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 Reforma peripheral clinic, PEMEX. - IV. - November and December of 2002

International Nuclear Information System (INIS)

Angeles C, A.; Hernandez C, J. E.; 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 quipment 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)

La petroquímica básica de petróleos mexicanos (PEMEX), 1980-2001

OpenAIRE

Suárez Guevara, Sergio

2011-01-01

El objetivo de nuestra investigación es analizar el proceso de desnacionalización o privatización de la industria petroquímica básica (IPB) de Petróleos Mexicanos (PEMEX), que forma parte de un proyecto impuesto, interna y externamente sobre la industria petrolera mexicana, en cada una de las actividades que la integran. Nuestro interés parte de la importancia estratégica que la petroquímica básica tiene para ramas industriales como la de fertilizantes, plásticos, alimentaria, farmacéut...

Specialized consultant in radiological safety to the clinical north central hospital of high speciality, PEMEX. IV. - December of 2001; Asesoria especializada en seguridad radiologica a la clinica hospital central norte de alta especialidad, PEMEX. IV.- 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 clinical north central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. IV. - October of 2001; Asesoria especializada en seguridad radiologica a la clinica al hospital central sur de alta especialidad, PEMEX. IV.- Octubre 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 south central hospital of high speciality, 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)

Procedures to enter the international market of the carbon and PEMEX electrical generation projects; Procedimientos para ingresar al mercado internacional del carbono y proyectos de generacion electrica de PEMEX

Energy Technology Data Exchange (ETDEWEB)

Zeferino Abundis, Yolanda [Universidad Nacional Autonoma de Mexico (UNAM), Mexico, D.F. (Mexico)

2006-11-15

The consumption and production of the electrical energy contribute to the gas emission that has the property of retaining heat in the atmosphere, giving rise to an increment in the global average temperature of the Earth, and causing a climatic change that the international scientific consensus describes as important alterations in the meteorological patterns. As a result of this, international actions were taken. The most ambitious agreement and by its quantified and obligatory character is presented the Kyoto Protocol, that forces the countries listed in Annex 1 to reduce their emissions through national measures and flexible mechanisms, within these last ones is the Clean Development Mechanism (CDM) that contemplates the mutual cooperation between developed and developing countries in the participation of projects tending to the reduction of gas emissions of greenhouse effect. Petroleos Mexicanos (PEMEX) has large necessities of electrical energy and steam, and counts on projects with characteristics that under the CDM cover the characteristics to be technical and economically viable. [Spanish] El consumo y produccion de la energia electrica contribuye a la emision de gases que tienen la propiedad de retener calor en la atmosfera, dando lugar a un incremento en la temperatura promedio global de la Tierra, y provocando un cambio climatico que el consenso cientifico internacional describe como alteraciones importantes en los patrones meteorologicos. A raiz de esto, se tomaron acciones internacionales. El acuerdo mas ambicioso y por su caracter cuantificado y obligatorio lo representa el Protocolo de Kyoto, quien obliga a los paises listados en el Anexo 1 a reducir sus emisiones a traves de medidas nacionales y mecanismos flexibles, dentro de estos ultimos se encuentra el Mecanismo de Desarrollo Limpio (MDL) que contempla la cooperacion mutua entre paises desarrollados y en vias de desarrollo en la participacion de proyectos tendientes a la reduccion de emisiones

High Prevalence of Tula Hantavirus in Common Voles in The Netherlands.

Science.gov (United States)

Maas, Miriam; de Vries, Ankje; van Roon, Annika; Takumi, Katsuhisa; van der Giessen, Joke; Rockx, Barry

2017-03-01

Tula virus (TULV) is a zoonotic hantavirus. Knowledge about TULV in the Netherlands is very scarce. Therefore in 2014, 49 common voles (Microtus arvalis) from a region in the south of the Netherlands, and in 2015, 241 common voles from regions in the north of the Netherlands were tested with the TULV quantitative RT-PCR. In the southern region, prevalence of TULV was 41% (20/49). In the northern regions, prevalence ranged from 12% (4/34) to 45% (17/38). Phylogenetic analysis of the obtained sequences showed that the regions fall within different clusters. Voles from the south were also tested on-site for the presence of hantavirus antibodies, but serology results were poorly associated with qRT-PCR results. These findings suggest that TULV may be more widespread than previously thought. No human TULV cases have been reported thus far in the Netherlands, but differentiation between infection by TULV or the closely related Puumala virus is not made in humans in the Netherlands, thus cases may be misdiagnosed.

Specialized consultant in radiological safety to the north central hospital of high speciality, PEMEX. III. - September of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J.

2001-12-01

The north central hospital of high speciality, 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 north central hospital of high speciality, PEMEX. II. - August of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J.

2001-10-01

The north central hospital of high speciality, 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 north central hospital of high speciality, PEMEX. I. - July of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.

2001-09-01

The north central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. II.- August of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J.

2001-12-01

The south central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. III.- September of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.; Benitez S, J. A.; Rodriguez A, F.; Garcia A, J.

2001-12-01

The south central hospital of high speciality, 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 south central hospital of high speciality, 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 south central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. I. - July of 2001

International Nuclear Information System (INIS)

Angeles C, A.; Vizuet G, J.

2001-09-01

The south central hospital of high speciality, 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 south central hospital of high speciality, PEMEX. V. - November 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 south central hospital of high speciality, 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)

RADIATION HYGIENIC MONITORING AND ASSESSMENT OF POPULATION DOSES IN RADIOACTIVELY CONTAMINATED AREAS OF TULA REGION

Directory of Open Access Journals (Sweden)

T. M. Chichura

2016-01-01

Full Text Available The goal. The analyses of radiation hygienic monitoring conducted in Tula region territories affected by the Chernobyl NPP accident regarding cesium-137 and strontium- 90 in the local foodstuffs and the analyses of populational annual effective dose. The materials and methods. The survey was conducted in Tula Region since 1997 to 2015. Over that period, more than fifty thousand samples of the main foodstuffs from the post-Chernobyl contaminated area were analyzed. Simultaneously with that, the external gamma - radiation dose rate was measured in the fixed control points. The dynamics of cesium -137 and strontium-90 content in foodstuffs were assessed along with the maximum values of the mean annual effective doses to the population and the contribution of the collective dose from medical exposures into the structure of the annual effective collective dose to the population. The results. The amount of cesium-137 and strontium -90 in the local foodstuffs was identified. The external gamma- radiation dose rate values were found to be stable and not exceeding the natural fluctuations range typical for the middle latitudes of Russia’s European territory. The maximum mean annual effective dose to the population reflects the stable radiation situation and does not exceed the permissible value of 1 mSv. The contribution of the collective dose from medical exposures of the population has been continuously reducing as well as the average individual dose to the population per one medical treatment under the annual increase of the medical treatments quantities. The conclusion. There is no exceedance of the admissible levels of cesium-137 and strontium- 90 content in the local foodstuffs. The mean annual effective dose to the population has decreased which makes it possible to transfer the settlements affected by the Chernobyl NPP accident to normal life style. This is covered by the draft concept of the settlements’ transfer to normal life style.

Specialized consultant in radiological safety to the north central hospital of high speciality, PEMEX. I. - May-June of 2003

International Nuclear Information System (INIS)

Angeles C, A.; Camacho V, B.; Rodriguez A, F.

2003-09-01

The north central hospital of high speciality, 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 clinical north central hospital of high speciality, PEMEX. IV. - 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 clinical north central hospital of high speciality, 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)

Modeling of the quality of water of River Tula, state of Hidalgo, Mexico

International Nuclear Information System (INIS)

Montelongo Casanova, Rosalba; Gordillo Martinez, Alberto Jose; Otazo Sanchez, Elena Maria; Villagomez Ibarra, Jose Roberto; Acevedo Sandoval, Otilio Arturo; Prieto Garcia, Francisco

2008-01-01

The central objective of this work is to model the quality of the water of Tula River, from the central emitter to their confluence with the Endho Dam. It was evaluated during two years, considering a length of 50 km in 4 zones and 35 sites of sampling. The central emitter contributes to the greater amount of organic matter, water without treatment of the city of Mexico and co urbane zone. The values of DBO varied from 1.16 up to 486.81 mg O 2 /L; the oxygen dissolved between 1.52 and 5.82 mg/L. This implies affectation for the development of the aquatic life. The alkalinity exceeded the ecological criteria of quality as a source of potable water with value of 458.01 mg. the fats displayed variations from 0.9 mg/l up to 18.1 mg/l and ammoniacal nitrogen outside the limits established for protection of the aquatic life with values from 0.09 a 64 mg/L; nitrates (6.24 mg/L) and nitrites (0.5-1.304 mg/L) exceed the ecological criteria. The metals cadmium, lead, iron, manganese and zinc are in concentrations over the permissible rank and in some sections mercury presence was reported. The fecal coliforms were detected in values from 2.1x10 4 up to 2.40x10 1 1 NMP/100 milliliters. In general, the toxicity in the residual water unloading demonstrated that all appears of moderate to high. Only there were three monitored stations (19%) with excellent quality, 3 smaller or equal DBOs to mg/L, which is considered like water no contaminated by biodegradable organic matter

A Narrative about a “Resurrected Woman” in the Reception of D.V. Batov, an Old Believer of Tula

Directory of Open Access Journals (Sweden)

Alexander V. Pigin

2017-12-01

Full Text Available The article deals with one of the genres of Russian folklore, the so-called obmiraniye narratives about a human soul visiting the other world during the lethargy state. It dis- cusses the problem of perception of such texts on the example of the following case study. At the turn of the century, a famous Tula-based Old Believer and publisher D.V. Batov (1825–1910 wrote a short article “On the Reading of Brochure Phrases” (reprinted as “On the Reading of Fictitious Brochures”. In this article, he strongly criticized the nar- rative about a “resurrected woman” recorded by Archimandrite Macarius (Glukharyov of Altai in the early 1830s. In this narrative, a local Cossack’s wife sank into lethargy and was ascended to heaven where she met the Lord who heard the prayers for her and let her go back but instead ordered to bring him the soul of a different woman bearing the same name. D.V. Batov interpreted this obmiraniye narrative as sheer fiction circulated by the dominant church, alongside other fictitious stories, and causing damage to the faith. The article examines other D.V. Batov’s arguments against this text: the main one is dis- crepancy between the narrative and the Orthodox doctrine of the soul’s afterlife ordeals as represented in the Byzantine Life of Vassily Novy (10 th century. The Old Believer of Tula reads a text belonging to folk culture through the lenses of church literature and bookish topoi. Thus, the process of text verification by the bearer of religious conscious- ness consists in its juxtaposing with the tradition that the recipient sees as the only true one. The article also analyzes the actual obmiraniye narrative recorded by Archimandrite Macarius and finds its parallels in oral and written texts of the visionary genre.

Specialized consulting in radiological safety to the North Central Hospital of high specialty, PEMEX. V. November of 2001; Asesoria especializada en seguridad radiologica al Hospital Central Norte de alta especialidad, 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. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2002-01-15

It is a report of a specialized consulting in radiological safety that to be carried the ININ to PEMEX for the North Central Hospital of High Specialty, to maintain the sanitary license for the use of X ray equipment of medical diagnostic, and guarantee these services with a program of quality assurance. To give fulfilment to that requests it is programmed a technical assistance monthly, with reports of results during the development of the service. In this document it is carried a report of the advances and results in the month of November of the 2001, where the following documents are analyzed: Manual of radiological safety, program of quality assurance, operation procedures, procedure of maintenance team, procedure of medical radiological control of the specialized personnel; also are annotate the obtained results and their observations. (Author)

Specialized consulting in radiological safety to the south central hospital of high specialty, PEMEX. VI. December of 2001; Asesoria especializada en seguridad radiologica al hospital central sur de alta especialidad. 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. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

2002-01-15

It is a report of a specialized consulting in radiological safety that to be carried the ININ to PEMEX for the South Central Hospital of High Specialty, to maintain the sanitary license for the use of X-ray equipment of medical diagnostic, and guarantee these services with a program of quality assurance. To give fulfilment to that requests it is programmed a technical assistance monthly, with reports of results during the development of the service. In this document it is carried a report of the advances and results in the month of december of the 2001, where the following documents are analyzed: Manual of radiological safety, program of quality assurance, operation procedures, procedure of maintenance team, procedure of medical radiological control of the specialized personnel; also are annotate the obtained results and their observations. (Author)

The removal of microorganisms and organic micropollutants from wastewater during infiltration to aquifers after irrigation of farmland in the Tula Valley, Mexico

Energy Technology Data Exchange (ETDEWEB)

Chavez, Alma; Maya, Catalina [Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04510 D.F. (Mexico); Gibson, Richard [Instituto de Geografia, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04510 D.F. (Mexico); Jimenez, Blanca, E-mail: bjimenezc@iingen.unam.mx [Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04510 D.F. (Mexico)

2011-05-15

The Tula Valley receives untreated wastewater from Mexico City for agricultural irrigation, half of which infiltrates to aquifers from where drinking water is extracted. Samples of wastewater and infiltrated water from three areas of the valley were analyzed for microorganisms, organic micropollutants, and some basic parameters. Concentrations of microorganisms in the infiltrated water were generally very low but the incidence of fecal coliforms (present in 68% of samples), somatic bacteriophages (36%), Giardia spp. (14%), and helminth eggs (8%) suggested a health risk. Organic micropollutants, often present at high concentrations in the wastewater, were generally absent from the infiltrated water except carbamazepine which was in 55% of samples (up to 193 ng/L). There was no correlation between carbamazepine concentrations and the presence of microorganisms but highest concentrations of carbamazepine and boron coincided. A treatment such as nanofiltration would be necessary for the infiltrated water to be a safe potable supply. - Highlights: > Wastewater from Mexico City used for crop irrigation infiltrates to aquifers. > Infiltration through the soil removes many contaminants. > Occasional contamination of infiltrated water with microorganisms occurs. > Carbamazepine is widely present in the infiltrated water. > Safe use of this water for drinking would need nanofiltration or another treatment. - Water extracted from aquifers fed by wastewater used for irrigation may contain microorganisms and persistent polar organic micropollutants and requires treatment to be a potable supply.

The removal of microorganisms and organic micropollutants from wastewater during infiltration to aquifers after irrigation of farmland in the Tula Valley, Mexico

International Nuclear Information System (INIS)

Chavez, Alma; Maya, Catalina; Gibson, Richard; Jimenez, Blanca

2011-01-01

The Tula Valley receives untreated wastewater from Mexico City for agricultural irrigation, half of which infiltrates to aquifers from where drinking water is extracted. Samples of wastewater and infiltrated water from three areas of the valley were analyzed for microorganisms, organic micropollutants, and some basic parameters. Concentrations of microorganisms in the infiltrated water were generally very low but the incidence of fecal coliforms (present in 68% of samples), somatic bacteriophages (36%), Giardia spp. (14%), and helminth eggs (8%) suggested a health risk. Organic micropollutants, often present at high concentrations in the wastewater, were generally absent from the infiltrated water except carbamazepine which was in 55% of samples (up to 193 ng/L). There was no correlation between carbamazepine concentrations and the presence of microorganisms but highest concentrations of carbamazepine and boron coincided. A treatment such as nanofiltration would be necessary for the infiltrated water to be a safe potable supply. - Highlights: → Wastewater from Mexico City used for crop irrigation infiltrates to aquifers. → Infiltration through the soil removes many contaminants. → Occasional contamination of infiltrated water with microorganisms occurs. → Carbamazepine is widely present in the infiltrated water. → Safe use of this water for drinking would need nanofiltration or another treatment. - Water extracted from aquifers fed by wastewater used for irrigation may contain microorganisms and persistent polar organic micropollutants and requires treatment to be a potable supply.

The Thirty Years’ Results of Radiation Hygienic Monitoring of Tula Region territories contaminated due to the Chernobyl NPP accident

Directory of Open Access Journals (Sweden)

V. V. Boldyreva

2016-01-01

Full Text Available Over 50% of Tula Region areas were contaminated after the Chernobyl NPP accident. The article provides the thirty years’ results of radiation hygienic monitoring of the Chernobyl accidental fallout - affected areas in Tula Region. The radiation situation is assessed at the initial accidental period and at the current stage. The initial levels of gamma - radiation dose intensity (up to 35 mcSv/hr are identified for the period of the “iodine” hazard along with the tabular data on the dose intensity relative stabilization by the beginning of August 1986 due to iodine-131 decay. The information is presented regarding iodine-131 tentative maximum permissible level exceedance in the dairy products of the two most contaminated regional areas - Plavskoye and Arsenievskoye. The article also provides the laboratory data on the total beta - activity in the foodstuffs in 1986-1987 and cesium-137 maximum permissible level exceedence in 1986. The radionuclide maximum permissible level exceedances in foodstuffs were registered only in 1986 due to the plants surface contamination whereas in the forest mushrooms those exceedances were repeatedly found until 2004. The black earths and grey forest soils had a benign impact upon the intensity of the radionuclide transfer into plants which resulted in the formation of internal radiation doses.At the current stage, the content of cesium-137 and strontium- 90 in the foodstuffs can only be quantified by a radiochemical method. The table covers all the districts within the boundaries of radiation contaminated zones. The radiochemical studies indicate the main dose - forming products. The article contains the table of internal and external radiation doses of the population in Plavsk town over 1986-1990 and displays the factors impacting population’s internal and external exposure. The Chernobyl - affected exposure dose of the population is mostly attributed to the external radiation and, for over twenty years, it

Air Pollution Studies in Central Russia (Tula Region) Using Moss Biomonitoring Technique, NAA and AAS

CERN Document Server

Ermakova, E V; Steinnes, E

2002-01-01

For the first time the moss biomonitoring technique has been applied to air pollution monitoring in Central Russia (Tula Region). Moss samples were collected from 83 sites in accordance with the sampling strategy of European projects on biomonitoring of atmospheric deposition. Neutron activation analysis (NAA) at the IBR-2 reactor has made it possible to determine the concentration of 33 elements (Na, Mg, Al, Cl, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, As, Br, Rb, Sr, Mo, Sb, I, Cs, Ba, La, Ce, Sm, Tb, Yb, Hf, Ta, W, Th, U) over a large concentration range (from 10000 mg/kg for K to 0.001 mg/kg for Tb and Ta). In addition to NAA, flame AAS (atomic absorption spectrometry) was applied to determine the concentration of Cd, Cu and Pb. Factor analysis was applied to determine possible sources of elements detected in the investigated mosses. Eight factors were identified. The geographical distribution of factor scores is presented. The interpretation of the factor analysis findings points to natural as well as anthr...

Microstructural characterization of archaeological materials from the Chapatongo-Los Cerritos, Tula, Hidalgo site through Sem and XRD

International Nuclear Information System (INIS)

Rodriguez L, V.; Espinosa P, M.; Fournier, P.

2004-01-01

In one of the main epiclase s establishments of the region of Tula, they have been carried out extensive excavations recently in several sectors. Among the funeral offerings, as well as among the waste materials and recovered in architectural fillers of the place of Chapatongo-Los Cerritos. Diverse stony materials are included stone-beads fundamentally; and they were characterized through Scanning Electron Microscopy (MEB), Energy Dispersive X-ray Spectroscopy (EDS) and X-ray Diffraction (DRX). Morphologies with habits were identified as grooved with great ruggedness that present particles like inclusions of metallic oxides, surfaces with great porosity, lamellar structures, agglomerates, fibers of great extension. Likewise the constituent crystalline phases of the samples were identified: calcite, aragonite, calcium and potassium aluminosilicates, microcline and quartz. In the case of the crystalline phases like omphacite, nacrite and dickite are characteristic of the green stone-beads, these belong to the family of the jadeite phase, considered as precious materials in the pre hispanic world. (Author) 20 refs., 20 tabs., 23 figs

Air pollutant characterization in Tula industrial corridor, Central Mexico, during the MILAGRO study.

Science.gov (United States)

Sosa, G; Vega, E; González-Avalos, E; Mora, V; López-Veneroni, D

2013-01-01

Pollutant emissions and their contribution to local and regional air quality at the industrial area of Tula were studied during a four-week period as part of the MILAGRO initiative. A recurrent shallow stable layer was observed in the morning favoring air pollutants accumulation in the lower 100 m atmospheric layer. In the afternoon the mixing layer height reached 3000 m, along with a featuring low level jet which was responsible of transporting air pollutants at regional scales. Average PM10 at Jasso (JAS) and Tepeji (TEP) was 75.1 and 36.8 μ g/m(3), respectively while average PM2.5 was 31.0 and 25.7 μ g/m(3). JAS was highly impacted by local limestone dust, while TEP was a receptor of major sources of combustion emissions with 70% of the PM10 constituted by PM2.5. Average hourly aerosol light absorption was 22 Mm(-1), while aerosol scattering (76 Mm(-1)) was higher compared to a rural site but much lower than at Mexico City. δ(13)C values in the epiphyte Tillandsia recurvata show that the emission plume directly affects the SW sector of Mezquital Valley and is then constrained by a mountain range preventing its dispersion. Air pollutants may exacerbate acute and chronic adverse health effects in this region.

Air Pollutant Characterization in Tula Industrial Corridor, Central Mexico, during the MILAGRO Study

Directory of Open Access Journals (Sweden)

G. Sosa

2013-01-01

Full Text Available Pollutant emissions and their contribution to local and regional air quality at the industrial area of Tula were studied during a four-week period as part of the MILAGRO initiative. A recurrent shallow stable layer was observed in the morning favoring air pollutants accumulation in the lower 100 m atmospheric layer. In the afternoon the mixing layer height reached 3000 m, along with a featuring low level jet which was responsible of transporting air pollutants at regional scales. Average PM10 at Jasso (JAS and Tepeji (TEP was 75.1 and 36.8 μg/m3, respectively while average PM2.5 was 31.0 and 25.7 μg/m3. JAS was highly impacted by local limestone dust, while TEP was a receptor of major sources of combustion emissions with 70% of the PM10 constituted by PM2.5. Average hourly aerosol light absorption was 22 Mm−1, while aerosol scattering (76 Mm−1 was higher compared to a rural site but much lower than at Mexico City. δ13C values in the epiphyte Tillandsia recurvata show that the emission plume directly affects the SW sector of Mezquital Valley and is then constrained by a mountain range preventing its dispersion. Air pollutants may exacerbate acute and chronic adverse health effects in this region.

Specialized consulting in radiological safety to the North Central Hospital of high specialty, PEMEX. V. November 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

It is a report of a specialized consulting in radiological safety that to be carried the ININ to PEMEX for the North Central Hospital of High Specialty, to maintain the sanitary license for the use of X ray equipment of medical diagnostic, and guarantee these services with a program of quality assurance. To give fulfilment to that requests it is programmed a technical assistance monthly, with reports of results during the development of the service. In this document it is carried a report of the advances and results in the month of November of the 2001, where the following documents are analyzed: Manual of radiological safety, program of quality assurance, operation procedures, procedure of maintenance team, procedure of medical radiological control of the specialized personnel; also are annotate the obtained results and their observations. (Author)

Specialized consulting in radiological safety to the south central hospital of high specialty, 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

It is a report of a specialized consulting in radiological safety that to be carried the ININ to PEMEX for the South Central Hospital of High Specialty, to maintain the sanitary license for the use of X-ray equipment of medical diagnostic, and guarantee these services with a program of quality assurance. To give fulfilment to that requests it is programmed a technical assistance monthly, with reports of results during the development of the service. In this document it is carried a report of the advances and results in the month of december of the 2001, where the following documents are analyzed: Manual of radiological safety, program of quality assurance, operation procedures, procedure of maintenance team, procedure of medical radiological control of the specialized personnel; also are annotate the obtained results and their observations. (Author)

[The concentration and distribution of 137Cs in soils of forest and agricultural ecosystems of Tula Region].

Science.gov (United States)

Lipatov, D N; Shcheglov, A I; Tsvetnova, O B

2007-01-01

The paper deals with a comparative study of 137Cs contamination in forest, old arable and cultivated soils of Tula Region. Initial interception of Chernobyl derived 137Cs is higher in forest ecosystems: oak-forest > birch-forest > pine-forest > agricultural ecosystems. Vertical migration of 137Cs in deeper layers of soils was intensive in agricultural ecosystems: cultivated soils > old arable soils > birch-forest soils > oak-forest soils > pine-forest soils. In study have been evaluated spatial variability of 137Cs in soil and asymmetrical distribution, that is a skew to the right. Spatial heterogeneity of 137Cs in agricultural soils is much lower than in forest soils. For cultivated soil are determined the rate of resuspension, which equal to 6.1 x 10(-4) day(-1). For forest soils are described the 137Cs concentration in litter of different ecosystems. The role of main accumulation and barrier of 137Cs retain higher layers of soils (horizon A1(A1E) in forest, horizon Ap in agricultural ecosystems) in long-term forecast after Chernobyl accident.

The influence of forest shelterbelts on 137Cs fallout in Chernobyl affected areas (Tula region, Russia).

Science.gov (United States)

Ivanov, Maxim; Shamshurina, Eugeniya; Tatyana, Paramonova; Vladimir, Belyaev; Angelina, Gavruchenkova; Nikolai, Lugovoy; Konstantinov, Pavel

2015-04-01

The radioactive fallout after Chernobyl accident caused serious contamination by 137Cs along extensive area of East-European plain.Cs137 fall down on earth surface in two ways: gravitational - "dry" and rainfall - "wet" way. "Dry" fallout is a result of direct deposition of radionuclides from atmosphere with average speed of about 0.1-1 mm/sec. The fate of "dry fall"is far less than rainfall mechanism. Erupted water steam of reactor zone full of radioactive material enriched precipitation with 137Cs. Therefore, the derived spatial structure of contamination was under control of rainfall pattern in May-June 1986. On the areas affected by rainfall fallout was the Southern part of Tula region in Middle Russia. It got name as "Plava hot spot" by the town in the center of this area. Tula is a traditional rural region, the vast areas covered by chernozem soils are cultivated for centuries. During cultivation forest cover was reduced that urged growth of wind erosion and loss of soil fertility. Hence, in the middle of 20 the century large arrangements for creation of forest shelterbelts were conducted. High efficiency of shelterbelts made them a widely provided part of new human-transformed landscape. Usually shelterbelts are set as a regular network across main direction of winds in particular region. Such organization help to reduce speed of air steam in the lowest 20-30 m layer of atmosphere. In addition, shelterbelts are very good collectors of snow in winter time which increase total moisture of soil and its fertility. Represented investigation is conducted to find out any correlation between shelterbelts and fallout of radionuclides. If such correlation is significant, it has to be taken into account for further environmental surveys. Two shelterbelts on the interfluve positions were chosen for detailed examination. Both selected objects emerged before 1986 but have different width, floristic composition, orientation and type of construction. One of shelterbelts is

CIVIC CULTURE IN CONTEMPORARY RUSSIA (on the example of Tula region

Directory of Open Access Journals (Sweden)

V. V. Krasnopevtseva

2017-01-01

Full Text Available The article focuses on the prospects of the development of civil society inTulaandTularegion.Tularegion belongs to the third type of Russian regions according to the classification of regions on the potential development of civil society. This demonstrates the presence of favorable conditions for the development of civil society institutions inTula. Actually today there is a tendency towards more active civic participation of the population in the region. There are several factors which contribute to this.One of the foundations of civil society formation inTularegion is the activity of non-profit organizations. First of all youth non-profit organizations should be mentioned. They play an important role in the political socialization of young people and youth initiatives support. In this context, it is also necessary to note the role of educational institutions, which purpose is civic education of young people.There is a significant increase in the number of volunteer organizations and groups. The younger generation actively takes part in their work. Volunteer organizations involve young people in professional and social activities, form their social and civic responsibility. Thus, volunteering is one of the most important indicator of the functioning of civil society. Over the past few years more than 30 volunteer organizations and groups as well as several centers promoting volunteers have appeared in the region. These measures are a significant step towards the institutionalization of volunteering inTularegion.Civil society is impossible without a high level of legal awareness of the population. The activity of various human rights organizations that promote the legal culture of the region’s population contributes to the development of the civil society institutions.Patriotic and charitable organizations as well as political parties play an important role in the life ofTularegion. Being the intermediaries between civil society and the

Atmospheric pollution in the Tula Industrial Corridor studied using a bio monitor and nuclear analytical techniques

Energy Technology Data Exchange (ETDEWEB)

Martinez C, M. A.; Solis, C.; Andrade, E. [UNAM, Instituto de Fisica, Apdo. Postal 20-364, 01000 Mexico D. F. (Mexico); Beltran H, R. I. [Universidad Autonoma del Estado de Hidalgo, Centro de Investigaciones Quimicas, Carretera Pachuca-Tulancingo Km. 4.5, 42184 Pachuca, Hidalgo (Mexico); Issac O, K. [Universidad Autonoma del Estado de Mexico, Facultad de Medicina, Paseo Tollocan s/n, esq. Jesus Carranza, 50120 Toluca, Estado de Mexico (Mexico); Lucho C, C. A. [Universidad Politecnica de Pachuca, Carretera Pachuca-Cd. Sahagun Km. 20, Hidalgo (Mexico); Lopez R, M. C.; Longoria, L. C. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2011-02-15

This study deals with the application of nuclear analytical techniques to analyze trace elements in the biological monitor Tillandsia usneoides. Biological monitors provides an alternative advantageous way of particulate matter sampling in air pollution studies, since there is no need of special sampling devices, accumulation time can be as long as desired. T. usneoides, which occurs naturally throughout Mexico, was used to monitor air quality of Tula-Vito-Apasco (TVA) industrial corridor at central Mexico. This area is considered one of the critical zones of the country because of atmospheric contaminants high concentration. Particulate matter is regulated by Mexican norms, but its chemical composition is not. Plants were transplanted from a clean environment to four sites at the TVA corridor, and exposed for 12 weeks from February to April 2008. Trace element accumulation of plants was determined by particle induced X-ray emission and neutron activation analysis. Results reveal differences in trace elements distribution among sites in the TVA corridor. Furthermore, anthropogenic elements (S, V) and crustal elements (Ca) in T. usneoides exhibit high levels. Highly toxic elements such as Hg, As and Cr although present at trace levels, showed un enrichment relative to the initial values, when transplanted to the TVA corridor. Results show that monitoring with T. usneoides allows a first approximation of air sources to provide insights of the atmospheric pollution in the TVA corridor. (Author)

Atmospheric pollution in the Tula Industrial Corridor studied using a bio monitor and nuclear analytical techniques

International Nuclear Information System (INIS)

Martinez C, M. A.; Solis, C.; Andrade, E.; Beltran H, R. I.; Issac O, K.; Lucho C, C. A.; Lopez R, M. C.; Longoria, L. C.

2011-01-01

This study deals with the application of nuclear analytical techniques to analyze trace elements in the biological monitor Tillandsia usneoides. Biological monitors provides an alternative advantageous way of particulate matter sampling in air pollution studies, since there is no need of special sampling devices, accumulation time can be as long as desired. T. usneoides, which occurs naturally throughout Mexico, was used to monitor air quality of Tula-Vito-Apasco (TVA) industrial corridor at central Mexico. This area is considered one of the critical zones of the country because of atmospheric contaminants high concentration. Particulate matter is regulated by Mexican norms, but its chemical composition is not. Plants were transplanted from a clean environment to four sites at the TVA corridor, and exposed for 12 weeks from February to April 2008. Trace element accumulation of plants was determined by particle induced X-ray emission and neutron activation analysis. Results reveal differences in trace elements distribution among sites in the TVA corridor. Furthermore, anthropogenic elements (S, V) and crustal elements (Ca) in T. usneoides exhibit high levels. Highly toxic elements such as Hg, As and Cr although present at trace levels, showed un enrichment relative to the initial values, when transplanted to the TVA corridor. Results show that monitoring with T. usneoides allows a first approximation of air sources to provide insights of the atmospheric pollution in the TVA corridor. (Author)

SIAT: Information system of support to the administration of technology; SIAT: Sistema de informacion de apoyo a la administracion de la tecnologia

Energy Technology Data Exchange (ETDEWEB)

Molina Gonzalez, Ricardo; Herrera Lavin, Jesus; Rodriguez Ortiz, Guillermo [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

1999-07-01

A general introduction is made of the administration problem of the technology and a brief description of the process implemented in Petroleos Mexicanos (PEMEX) Exploration and Production (PEP) for the administration of the technology in PEP and the benefits that it provides. [Spanish] Se presenta una introduccion general del problema de administracion de la tecnologia y una breve descripcion del proceso implantado en Petroleos Mexicanos (Pemex) Exploracion y Produccion (PEP) para la administracion de las tecnologias en PEP y los beneficios que proporciona.

El papel de los Estados Unidos en la reforma energética mexicana del 2013. Estudio de caso: el fin del monopolio petrolero de Pemex

OpenAIRE

Marín, Julián

2016-01-01

Este estudio de caso analiza las razones por las cuales México adelantó una reforma constitucional en materia energética en 2013, y el interés que tuvo Estados Unidos en esta, puesto que se destaca la intención del gobierno estadounidense de convertir a América del Norte en una región más sólida. Es así como se exponen las razones por las cuales México decide reformar su constitución y por esa vía tener un impacto directo en Petróleos Mexicanos (Pemex), la cual es la mayor compañía del paí...

Vertical distribution of 137Cs in alluvial soils of the Lokna River floodplain (Tula oblast) long after the Chernobyl accident and its simulation

Science.gov (United States)

Mamikhin, S. V.; Golosov, V. N.; Paramonova, T. A.; Shamshurina, E. N.; Ivanov, M. M.

2016-12-01

Profiles of vertical 137Cs distribution in alluvial meadow soils on the low and medium levels of the Lokna River floodplain (central part of the Plavsk radioactive spot in Tula oblast) 28 years after the Chernobyl fallout have been studied. A significant increase in the 137Cs pool is revealed on the low floodplain areas compared to the soils of interfluves due to the accumulation of alluvium, which hampers the reduction of the total radionuclide pool in alluvial soils because of radioactive decay. The rate of alluvium accumulation in the soil on the medium floodplain level is lower by three times on average. An imitation prognostic model has been developed, which considers the flooding and climatic conditions in the region under study. Numerical experiments have quantitatively confirmed the deciding role of low-mobile forms in the migration of maximum 137Cs content along the soil profile in the absence of manifested erosion-accumulation processes.

Market study on the oil and petroleum industry in Mexico

International Nuclear Information System (INIS)

1991-01-01

The historical background of the Mexican petroleum industry is outlined and an overview is presented of the state of the Mexican economic environment. The Mexican market for oil and gas field equipment is estimated, with a focus on the oil monopoly PEMEX. The total imports of oil and gas field equipment are estimated to increase to US$280.4 million in 1992, and the most important foreign suppliers are led by the USA, which has a 72% share. Canadian exports of oil and gas field equipment have remained fairly stable during the last few years at $2.4-2.7 million. In general, prospects for Canadian suppliers to the Mexican market are best in the area of technologically sophisticated equipment. An end-user profile of PEMEX is presented, noting that it is the largest enterprise in Latin America and had $14.2 billion in sales in 1989. Equipment imported by PEMEX includes seamless steel pipe, drilling tools, gate and control valves, electric motors, processing and control equipment, steam and gas turbines, and telecommunications equipment. PEMEX activities in 1989 are reviewed, including those in the petrochemical sector, and projected activities are described. Major efforts planned by PEMEX include expansion of petrochemical production. Access to the Mexican market is discussed in terms of PEMEX purchasing policy, payment system, import requirements, the need for using a supplier agent, and use of the metric system and other standards. 6 figs., 2 tabs

78 FR 38030 - Application for Final Commitment for a Long-Term Loan or Financial Guarantee in Excess of $100...

Science.gov (United States)

2013-06-25

... of U.S. goods and services to be used in Pemex's on- and off-shore oil and gas exploration and.... Guarantor(s): Pemex Exploracion y Produccion; Pemex Refinacion; Pemex Gas y Petroquimica Basica. Description...

Дополнения и уточнения к фауне чешуекрылых (Lepidoptera) Тульской области. 6 = Additions and corrections to the fauna of Lepidoptera of the Tula Province. 6

NARCIS (Netherlands)

Bolshakov, A.V. Sviridov, E.J. van Nieukerken, S.A. Ryabov L.V.; Sviridov, A.V.; Nieukerken, van E.J.; Ryabov, S.A.

2016-01-01

Additions and corrections to the lists of Lepidoptera of Tula Province are given, comprising 33 species, 23 of which are listed for the province for the first time, incl. 6 species (Stigmella obliquella (Heinemann, 1862), Phyllonorycter nicellii (Stainton, 1851), Insalebria serraticornella (Zeller,

Дополнения и уточнения к фауне чешуекрылых (Lepidoptera) Тульской области. 1 = Additions and corrections to the fauna of Lepidoptera of the Tula Province. 1

NARCIS (Netherlands)

Bolshakov, L.V.; Nieukerken, van E.J.; Piskunov, V.I.; Lovtsova, Yu.A.

2008-01-01

Additions and corrections to the lists of Lepidoptera of Tula Province are given, which contain 40 species, 36 of which species are listed for the province for the first time, 9 species (Stigmella naturnella (Klimesch, 1936), Stigmella tiliae (Frey, 1856), Stigmella microtheriella (Stainton, 1854),

Study of the treatment of oil-based muds from PEMEX's storage centres using thermal plasma in a deoxygenated atmosphere; Estudio del tratamiento de lodos aceitosos provenientes de los centros de acopio de PEMEX mediante plasma termico en ausencia de oxigeno

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-07-01

In this project, evaluation of plasma thermal process applied for degradation of hazardous waste was performed when the process was operated without oxigen, for degradation of oily sludge. Such wastes are produced from petroleum refineries and represent a problem due to the fact that they hazardous and great amount of them are generated in Mexico and the world; moreover there are not current with high efficiency to treat them. In this study the degradation experiments were made using two different sludge samples, one them was free of sediments, the bigger portion was water and hydrocarbons and the other sample was characterized by to had a high amount of sediments. These samples were obtained from a storing center of PEMEX. Process was operated utilizing different characteristics of the by-product. The biggest decrease in volume obtained with the sample of high amount of sediments was 85%, and such by-product resulted inert. For the sludge free of sediment the highest decrease of volume obtained was 95.5% and this by-product contained high amount of carbon in the form of dust, almost 50% of carbon mixes with clay material. The degradation efficiency of organic material was higher than to 99.99%. The residual gases formed during the degradation had low molecular weight.

Simulation of the concentration of SO{sub 2} issued by major stationary sources in 2003 in northwestern Chiapas and central Tabasco, Mexico; Simulacion de la concentracion de SO{sub 2} emitido por fuentes fijas mayores durante 2003 en el noroeste de Chiapas y centro de Tabasco, Mexico

Energy Technology Data Exchange (ETDEWEB)

Valdes Manzanilla, Arturo [Division Academica de Ciencias Biologicas, UJAT, Villahermosa, Tabasco (Mexico)]. E-mail: avmanzanilla@hotmail.com; Fernandez Garcia, German [Universidad Autonoma de Guadalajara Campus Tabasco, Villahermosa, Tabasco (Mexico); Ramos Herrera, Sergio [Division Academica de Ciencias Biologicas, UJAT, Villahermosa, Tabasco (Mexico); Bautista Margulis, Raul G. [Division Academica de Ciencias Biologicas, UJAT, Villahermosa, Tabasco (Mexico)

2008-05-15

The CALPUFF dispersion model was used to simulate the spatial distribution of the SO{sub 2} emitted by Petroleos Mexicanos (PEMEX) gas-processing complexes in Cactus, NW Chiapas, Nuevo PEMEX and Ciudad PEMEX, in central Tabasco, during 2003. It was found that the zone with the highest concentrations of SO{sub 2} is located SW from the PEMEX facilities. The zone, where the World Health Organization's norm for SO{sub 2} is surpassed (20 {mu}g/m{sup 3}), includes the city of Reforma, Chiapas and Ciudad PEMEX, Tabasco. [Spanish] El modelo de dispersion CALPUFF fue usado para simular la distribucion espacial de la concentracion de SO{sub 2} emitido por los complejos procesadores de gas de Petroleos Mexicanos (PEMEX) en Cactus, en el noroeste de Chiapas, Nuevo PEMEX y Ciudad PEMEX, en el centro de Tabasco, durante 2003. Se encontro que la zona con mayor concentracion de SO{sub 2} esta localizada al suroeste de las instalaciones de la empresa petrolera. La zona, donde la norma de la Organizacion Mundial de la Salud para el SO{sub 2} es sobrepasada (20 {mu}g/m{sup 3}), incluye la ciudad de Reforma, Chiapas y Ciudad PEMEX, Tabasco.

Study of the treatment of oil-based muds from PEMEX's storage centres using thermal plasma in a deoxygenated atmosphere

International Nuclear Information System (INIS)

1999-07-01

In this project, evaluation of plasma thermal process applied for degradation of hazardous waste was performed when the process was operated without oxigen, for degradation of oily sludge. Such wastes are produced from petroleum refineries and represent a problem due to the fact that they hazardous and great amount of them are generated in Mexico and the world; moreover there are not current with high efficiency to treat them. In this study the degradation experiments were made using two different sludge samples, one them was free of sediments, the bigger portion was water and hydrocarbons and the other sample was characterized by to had a high amount of sediments. These samples were obtained from a storing center of PEMEX. Process was operated utilizing different characteristics of the by-product. The biggest decrease in volume obtained with the sample of high amount of sediments was 85%, and such by-product resulted inert. For the sludge free of sediment the highest decrease of volume obtained was 95.5% and this by-product contained high amount of carbon in the form of dust, almost 50% of carbon mixes with clay material. The degradation efficiency of organic material was higher than to 99.99%. The residual gases formed during the degradation had low molecular weight

Tula hantavirus isolate with the full-length ORF for nonstructural protein NSs survives for more consequent passages in interferon-competent cells than the isolate having truncated NSs ORF.

Science.gov (United States)

Jääskeläinen, Kirsi M; Plyusnina, Angelina; Lundkvist, Ake; Vaheri, Antti; Plyusnin, Alexander

2008-01-11

The competitiveness of two Tula hantavirus (TULV) isolates, TULV/Lodz and TULV/Moravia, was evaluated in interferon (IFN) -competent and IFN-deficient cells. The two isolates differ in the length of the open reading frame (ORF) encoding the nonstructural protein NSs, which has previously been shown to inhibit IFN response in infected cells. In IFN-deficient Vero E6 cells both TULV isolates survived equally well. In contrast, in IFN-competent MRC5 cells TULV/Lodz isolate, that possesses the NSs ORF for the full-length protein of 90 aa, survived for more consequent passages than TULV/Moravia isolate, which contains the ORF for truncated NSs protein (66-67 aa). Our data show that expression of a full-length NSs protein is beneficial for the virus survival and competitiveness in IFN-competent cells and not essential in IFN-deficient cells. These results suggest that the N-terminal aa residues are important for the full activity of the NSs protein.

77 FR 27758 - Kinder Morgan Texas Pipeline LLC; Notice of Application

Science.gov (United States)

2012-05-11

... day to 425 MMcf per day. The proposed amendment would allow KMTP to continue to provide Pemex-Gas Y Petroquimica Basica (Pemex) with increased gas supplies as Pemex finishes repairing a damaged pipeline in...

Condiloma acuminado en adolescentes y adultos jóvenes del área de salud "Tula Aguilera" en el municipio de Camagüey

Directory of Open Access Journals (Sweden)

Dora Ester Aranda Ramos

2013-08-01

Full Text Available Introducción: las infecciones de transmisión sexual se propagan de persona a persona, principalmente a través de contactos sexuales; entre estas se encuentra el condiloma acuminado. Objetivo: determinar la manifestación del virus del papiloma humano en su forma de condiloma acuminado, en un área de salud. Métodos: se realizó un estudio transversal de 63 pacientes con dicha infección, pertenecientes a 5 consultorios del médico de la familia del Policlínico Universitario "Tula Aguilera Céspedes" del municipio de Camagüey (provincia de Camagüey, de febrero a agosto del 2008. Los datos se obtuvieron del modelo de cuestionario que constituyó el registro primario. Resultados: en la serie el grupo etario más vulnerable fue el de 15-19 años, el mayor número de infectados correspondió al sexo masculino y al estado conyugal soltero, y entre las afecciones asociadas más frecuentes figuraron el herpes simple y la candidiasis. Conclusiones: se observó un incremento del número de individuos con condiloma acuminado en los meses de junio, julio y agosto, con predominio en los varones, fundamentalmente los adolescentes.

Strategic behavior and international benchmarking for monopoly price regulation. The case of Mexico

Energy Technology Data Exchange (ETDEWEB)

Brito, Dagobert L. [Rice Univ., Houston, TX (US). Dept. of Economics and Baker Inst. (MS-22); Rosellon, Juan [Centro de Investigacion y Docencia Economicas (CIDE), Mexico, D.F. (Mexico); Deutsches Inst. fuer Wirtschaftsforschung, Berlin (Germany)

2010-07-01

This paper looks into various models that address strategic behavior in the supply of gas by the Mexican monopoly Pemex. The paper has three very strong technical results. First, the netback pricing rule for the price of domestic natural gas (based on a Houston benchmark price) leads to discontinuities in Pemex's revenue function. Second, having Pemex pay for the gas it uses and the gas it flares increases the value of the Lagrange multiplier associated with the gas processing constraint. Third, if the gas processing constraint is binding, having Pemex pay for the gas it uses and flares does not change the short run optimal solution for the optimization problem, so it will have no impact on short-run behavior. These results imply three clear policy recommendations. The first is that the arbitrage point be fixed by the amount of gas Pemex has the potential to supply in the absence of processing and gathering constraints. The second is that Pemex be charged for the gas it uses in production and the gas it flares. The third is that investment in gas processing and pipeline should be in a separate account from other Pemex investment. (orig.)

P12.01 Epidemiology in spinal tumors treated surgically at the South Central Hospital of High Specialty from PEMEX in Mexico

Science.gov (United States)

Hernandez Resendiz, R.; Cordoba Mosqueda, M.; Guerra Mora, J.; Loya Aguilar, I.; Garcia Gonzalez, U.

2016-01-01

Abstract Introduction: The spinal tumors are rare neoplasms, they can be primary or metastatic; in the literature they are divided in extradural and intradural, extramedullary and intramedullary, from which extradural tumors are the most frequent and are usually metastatic, the intramedullary are generally gliomas. From the primary tumors up to 78% are benign and 22% malign, the histological stripe and the involvement to the spinal compartments are of great importance for the results and the treatment which is mainly surgical, individualized and meticulously planned with the support of technological resources such as the electrophysiological monitoring during the surgery. Methods and Materials: Observational study with a range of patients from March 1999- March 2016 to whom surgical resection of the spinal tumor was performed and reported on the Electronic Files of the South Central Hospital of High Specialty PEMEX. A Statistical analysis is made with the SPSS Statistic of disease of the Institution program. Results: 23 patients with spinal tumor surgical resection were found. The median age was 53 ± 10 years. The most common clinical manifestation was radiculopathy (65%). The Karnofsky scale was used for initial evaluation where a 43% of patients had a 90 score at the moment of the diagnosis, while 65% had an ECOG 1. The most frequent tumor was the Spinal Shwannoma (39%), followed in prevalence by the Condroid Cordoma (17%), where the intradural extramedullary location was the most prevalent (78%). The medium rate of survival after the surgical procedure was from 11 months. Conclusions: Our cases and the international statistics coincide. Radiculopathy as high prevalence initial manifestation conceals us to dismiss in the sixth decade of life any possibility for spinal tumor presentation. Most of spinal tumor patients do not have any clinical deterioration in their basal state, which indicates that performing a successful surgical procedure and the right

Reforming Mexico’s Energy Sector to Enhance Stability

Science.gov (United States)

2011-10-27

requirement to reform Mexico’s energy sector. Subsequent analysis demonstrates government ownership of Petroleos Mexico (Pemex) is the fundamental...ownership of Petroleos Mexico (Pemex) is the fundamental destabilizing flaw in regulatory policy, by tracing various problems back to this root cause... Petroleos Mexico (Pemex) is the second largest company in Latin America and the seventh largest producer of oil in the world.1 The government of

Efectividad de la acupuntura y la auriculoterapia en la bursitis de hombro de pacientes atendidos en el policlínico Tula Aguilera

Directory of Open Access Journals (Sweden)

Arely Díaz Cifuentes

2015-02-01

Full Text Available Se realizó un estudio experimental con el objetivo de comparar la efectividad de la acupuntura y la auriculoterapia en el tratamiento de la bursitis de hombro, en pacientes que fueron atendidos en el policlínico “Tula Aguilera” de Camagüey, durante el periodo de enero a diciembre de 2013. El universo de estudio estuvo integrado por 250 pacientes que asistieron a la consulta de fisiatría, de dicha área de salud, con el diagnóstico de bursitis de hombro, quedando conformada la muestra por 180 pacientes mayores de 30 años. Se excluyeron los pacientes que usaron tratamiento farmacológico una semana antes, con lesiones dermatológicas en los lugares a puncionar, con trastornos de coagulación y/o psiquiátricos. La muestra se dividió en dos grupos de 90 pacientes cada uno, asignados aleatoriamente, el A tratado con acupuntura y el B con auriculoterapia. Predominaron los pacientes de 40 a 49 años, para un 66,1 %. Los síntomas clínicos se redujeron notablemente a los 15 días con la acupuntura y a los 30 con la auriculoterapia. La recuperación del grado de arco articular, tanto para los movimientos de rotación interna como para los de abducción, fue mayor en los pacientes tratados con acupuntura. Los pacientes que tuvieron un tiempo corto de evolución de la enfermedad antes del tratamiento fueron los que tuvieron mejor respuesta al mismo, con un 52,7 %. Los resultados evidencian la mayor efectividad de la acupuntura

Study of risk in gasoline and diesel transportation pipelines in Mexico; Estudio del riesgo en ductos de transporte de gasolinas y diesel en Mexico

Energy Technology Data Exchange (ETDEWEB)

Olivera Villasenor, Ruperto Enrique [Universidad Nacional Autonoma Mexico, Mexico D.F. (Mexico); Rodriguez Castellanos, Alejandro [Instituto Mexicano del Petroleo, Mexico D.F. (Mexico)

2005-10-15

A methodology of risk operative analysis for damages, which are derived from theft of gasoline in Petroleos Mexicanos (Pemex) pipelines by third parts (clandestine pipes) is proposed. Originally, the problematic is studied from the global perspective of pipelines accidents happened in the world, in United States of America and in Mexico, and later it approaches specifically the environment that the industry of Pemex-Refinery pipelines. When the results are obtained, it is concluded that the factor of risk with more occurrence probability of pipelines, is due to damages for third parts, in first term, and followed by the damages originated by corrosion in second term. So a diagnostic is made of the physical vulnerability degree on the rights of way of Pemex. [Spanish] Se propone una metodologia de analisis de riesgo operativo en poliductos debido a danos por terceras partes (tomas clandestinas), originados del hurto de gasolinas en ductos de Petroleos Mexicanos (Pemex). La problematica se aborda desde una perspectiva global de accidentes en los ductos de Pemex-Refinacion. Del analisis y resultados obtenidos, se concluye que el factor de riesgo con mayor probabilidad de ocurrencia en poliductos, es debido a danos por terceras partes, en primer termino, seguido de los danos originados por corrosion. Asimismo se hace un diagnostico del grado de vulnerabilidad fisica de los derechos de via de Pemex.

Foreign firms to get equal opportunity in Mexican selloff plans

International Nuclear Information System (INIS)

Wood, A.; Alvarez, C.

1993-01-01

Petroleos Mexicanos (Pemex) has not finalized details of its long-awaited petrochemical privatization program. However, the state oil group has made it clear the selloff schedule, due to begin during the next two months, will give equal investment opportunity to foreign firms, dashing the hopes of Mexican groups that they would be given first right of refusal in the privatization program. Meanwhile, Pemex has agreed with Shell Oil on a previously announced refining joint venture involving Shell's 225,000-bbl/day refinery at Deer Park, TX. Under the plan, Pemex will purchase a 50% stake in the refinery and join Shell in a $1-billion upgrade with would enable it to handle more Mexican crude. Sources believe that Shell and other US oil groups are interested in acquiring assets from Pemex Petroquimica

78 FR 4401 - Orders Granting Authority To Import and Export Natural Gas, To Import and Export Liquefied...

Science.gov (United States)

2013-01-22

... MARKETING, LLC 12-99-LNG PETROCHINA INTERNATIONAL (CANADA) TRADING LTD......... 12-104-NG PEMEX GAS Y... export natural gas Ltd. from/to Canada. 3154 10/04/12 12-110-NG Pemex Gas y Order granting blanket...

History of petroleum exploitation in the Tabasco state, 1900-1960 (summary and thesis positions)

International Nuclear Information System (INIS)

Ortiz Ortiz, M.

2004-06-01

In this work, the author uses the general archives of the Mexican nation and the historical archives of Pemex oil company to analyze the social, economical and environmental impacts of the development of petroleum exploitation in the Tabasco state (Mexico) from the beginning of the 20. century to the 1960's. (J.S.)

State of Tabasco: A Mexican petroleum district. Ein mexikanischer Erdoelstaat: Tabasco

Energy Technology Data Exchange (ETDEWEB)

Jacobsen, M.

1986-01-01

The Tabasco region is located in the southeast of Mexico. Before the petroleum boom in the mid seventies, agriculture was its dominant source of revenue. Farmers were generally earning their living by the small- and medium-scale production of basic foods, the cultivation and export of tropical fruits (cyclical phases of banana and cocoa cultivation) as well as by cattle-breeding. The discovery and exploration of extensive petroleum deposits placed in the hands of the national oil company PEMEX resulted in drastic and complex changes of the country's socio-economic structures. The publication reveals the gloomy situation of the Tabasco region. Within a few years only the PEMEX activities have 'covered' Tabasco with an 'oil slick' which has not - as might be assumed - contributed to a general prosperity but to the destruction of the environment, the speculation on real estate, extensive corruption and, which is more, to an always increasing proletarization and pauperization of that part of the population which is not directly connected to the pipeline.

Applying a Virtual Economy Model in Mexico's Oil Sector

International Nuclear Information System (INIS)

Baker, G.

1994-01-01

The state of Mexico's oil industry, including the accomplishments of Pemex, Mexico's national oil company, was discussed, with particular reference to the progress made in the period of 1988-1994, and the outlook for innovations in the post-Salinas era. The concept of an evolutionary trend from a command economy (State as sole producer), towards market (State as regulator) or mixed economies (State as business partner) in developing countries, was introduced, placing Pemex within this evolutionary model as moving away from centralized control of oil production and distribution, while achieving international competitiveness. The concept of ''virtual market economy'' was also discussed. This model contains the legal basis of a command economy, while instituting modernization programs in order to stimulate market-economic conditions. This type of economy was considered particularly useful in this instance, sine it would allow Pemex units to operate within international performance and price benchmarks while maintaining state monopoly. Specific details of how Pemex could transform itself to a virtual market economy were outlined. It was recommended that Pemex experiment with the virtual mixed economy model; in essence, making the state a co-producer, co-transporter, and co-distributor of hydrocarbons. The effects of such a move would be to bring non-debt funding to oil and gas production, transmission, and associated industrial activities

Mexico: World Oil Report 1991

International Nuclear Information System (INIS)

Maciej, H.

1991-01-01

This paper reports that state oil company Pemex appears to be in the middle of a mini-renaissance. Senior management proudly points to several areas of improvement, including a major reduction in the power of petroleum labor unions; a structural reorganization of the company into profit and cost centers; a significant trimming of foreign and domestic debt; and the growing readmittance of foreign investment and technology. Effects of these policy successes already are quantifiable and impressive. Restricting the unions' power has allowed Pemex to break the old habit of employing too many people and paying them too much. Indeed, the workforce has shrunk 30% to just below 150,000. Under the guidance of Finance Director Ernesto Marcos, Pemex has whittled its foreign debt to $5.6 billion from a 1982 high of $20 billion. Furthermore, the extra income provided by higher oil prices during the Persian Gulf war allowed Pemex in December to completely pay off its domestic debt, which has been nearly 2.5 trillion pesos (about $850 million) in the first quarter of 1990

Sedimentary petrology of oil well rock cores; Petrologia sedimentaria de nucleos de rocas de pozos petroleros

Energy Technology Data Exchange (ETDEWEB)

Izquierdo M, Georgina; Paredes S, Adriana [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2001-07-01

At the request of PEMEX Exploration and Production (PEP), in the area of Geology of the Gerencia de Geotermia, the necessary methodology has been integrated to carry out the geologic characterization of cores obtained during the oil well drilling. The integrated studies have been of utility for PEMEX, because they provide detailed information on the processes, conditions of deposition and diagenesis that occur in sedimentary rocks. On the other hand, this geologic information contributes to the update of the geologic model of the field in study. [Spanish] A solicitud de PEMEX Exploracion y Produccion (PEP), en el area de Geologia de la Gerencia de Geotermia, se ha integrado la metodologia necesaria para llevar a cabo la caracterizacion geologica de nucleos obtenidos durante la perforacion de pozos petroleros. Los estudios integrados han sido de utilidad para PEMEX, pues proporcionan informacion detallada sobre los procesos, condiciones de depositacion y diagenesis que ocurren en rocas sedimentarias. Por otro lado, esta informacion geologica contribuye a la actualizacion del modelo geologico del campo en estudio.

Bioremediation in oil-contaminated sites: Bacteria and surfactant accelerated remediation

International Nuclear Information System (INIS)

Strong-Gunderson, J.M.

1996-01-01

In Mexico, there are several environmental issues which are being addressed under the current governmental legislation. One of the important issues is restoring sites belonging to Petroleos Mexicanos (PEMEX). PEMEX is a large government owned oil company that regulates and manages the oil reserves. These sites are primarily contaminated with weathered hydrocarbons which are a consequence of extracting millions of barrels of oil. Within the southern regions of Mexico there are sites which were contaminated by activities and spills that have occurred during the past 30 years. PEMEX has taken the leadership in correcting environmental problems and is very concerned about cleaning up the contaminated sites as quickly as possible. The most significant contaminated sites are located to the north of Veracruz and south of Tabasco. These site areas are close to refineries or locations of oil exploration. The primary category of contaminants are hydrocarbons, among them asphaltenes, aromatic and other contaminants. The concentration of the contaminants varies depending on the location of the sites, but it can reach as high as 500,000 ppm. PEMEX has been searching for appropriate, and cost-effective technologies to clean up these sites. Biologically based remediation activities are of primary interest to PEMEX. However, other treatment technologies such as chemical-physical methods, encapsulation and incineration are also being considered. The present report summarizes preliminary experiments that measured the feasibility of bioremediation for a contaminated site in southern Mexico

Bioremediation in oil-contaminated sites: bacteria and surfactant accelerated remediation

Science.gov (United States)

Strong-Gunderson, Janet M.; Guzman, Francisco

1996-11-01

In Mexico, there are several environmental issues which are being addressed under the current governmental legislation. One important issue is restoring sites belonging to Petroleos Mexicanos (PEMEX). PEMEX is a large government owned oil company that regulates and manages the oil reserves. These sites are primarily contaminated with weathered hydrocarbons which are a consequence of extracting millions of barrels of oil. Within the southern regions of Mexico there are sites which were contaminated by activities and spills that have occurred during the past 30 years. PEMEX has taken the leadership in correcting environmental problems and is very concerned about cleaning up the contaminated sites as quickly as possible. The most significant contaminated sites are located to the north of Veracruz and south of Tabasco. These sites areas are close to refineries or locations of oil exploration. The primary category of contaminants are hydrocarbons, among them asphaltens, aromatic and other contaminants. The concentration of the contaminants varies depending on the location of the sites, but it can reach as high as 500,000 ppm. PEMEX has been searching for appropriate, and cost- effective technologies to clean up these sites. Biologically based remediation activities are of primary interest to PEMEX. However, other treatment technologies such as chemical-physical methods, encapsulation and incineration are also being considered. The present report summarizes preliminary experiments that measured the feasibility of bioremediation for a contaminated site in southern Mexico.

Population, petroleum, and politics: Mexico at the crossroads. Part 2. The potentials and problems of Mexican oil resources.

Science.gov (United States)

Gallagher, C F

1980-01-01

The 2 most important factors which will influence Mexico's future economic development are the country's overpopulation problem and the manner in which the country's oil reserves are exploited. This document describes the historical development of Mexico's oil industry and the current struggle of the government to ensure that the oil resources contribute toward the sound economic development of the country. The government expropriated foreign oil companies in 1938 and today most of the oil operations in Mexico are conducted by the state controlled Pemex Company. In recent years extensive oil reserves were discovered in Mexico and the country is now in the position of having large oil reserves at a time when oil prices are increasing. Known crude oil reserves are estimated at 31 billion barrels; however, an unconfirmed report by Pemex in 1980 placed the known reserves at 50 billion barrels. In the past the management of Pemex was corrupt and inefficient and many top positions in the company were filled by retired politicians. The recent appointment of Jose Andres de Oteyza as Chairman of the Board and of Jorge Diaz Serrano as the Director-General should greatly improve Pemex operations. In developing the country's oil industry the government wants 1) to keep production low enough to offset inflation and to preserve the resource but 2) to produce enough oil so that the country has sufficient funds for investment and for operating needed social programs. The government may not be able to keep oil production down to acceptable levels. It may be forced to increase oil exports to compensate for its growing reliance on imported food and other imported products. In recent years Mexico's industrial productivity and its agricultural production declined. The government wants to avoid being placed in the position where it will be forced to trade large quantities of oil for needed food. The current government is promoting investment in agriculture and industrial development in

Measuring program of the Federal Republic of Germany

International Nuclear Information System (INIS)

Hille, P.; Hille, R.

1992-04-01

The body content of radionuclides of close to 160.000 persons in the RSFSR has been examined during summer 1991. An area of approximately 10000 km 2 extending from close-to-Moskow Tula up to Slynka at the Byelorussian border and such including regions of low and high contamination levels in the districts of Briansk, Kaluga, Arel and Tula has been covered in the survey. Up to 7 mobile whole-body counting laboratories have been operational with a total number of 20 counters. More than 100 german specialists have participated in the task group. Each person examined received an official certificate given the activity of the Cs 137/134 mixture in the body and a judgement on the radiation risk involved. Observed activity levels were generally much less and in no case higher than the annual limit of intake acceptable for professional radiation workers. Only for less than 1% of the people examined the results suggest the necessity of a further surveillance by health physicists and physicians similar to the regular medical examination professional radiation workers undergo. (orig.) [de

Fractura de cadera en adultos mayores: prevalencia y costos en dos hospitales. Tabasco, México, 2009 Hip fracture in older adults: prevalence and costs in two hospitals. Tabasco, Mexico, 2009

Directory of Open Access Journals (Sweden)

Elsy del Carmen Quevedo-Tejero

2011-09-01

Full Text Available Objetivos. Determinar la prevalencia y costos directos de atención de fractura de cadera en adultos mayores derechohabientes usuarios de los hospitales de referencia del Instituto Mexicano del Seguro Social (IMSS y de Petróleos Mexicanos (PEMEX en Villahermosa, Tabasco, México, en el año 2009. Materiales y métodos. Estudio transversal. La información se basó en los registros de intervenciones quirúrgicas e informes institucionales de adultos mayores hospitalizados con registro de su atención.Se realizó análisis estadístico descriptivo considerando las variables: edad, sexo,tipo de fractura de cadera, mes de ocurrencia y costo directo de atención. Resultados.De 10765 registros de adultos mayores hospitalizados se encontró 57 casos de fractura de cadera (33 en el IMSS y 24 en PEMEX. La prevalencia de fractura de cadera fue 0,5% (IMSS 1,1% y PEMEX 0,3%, siendo más frecuente en mujeres y en mayores de 69 años de edad. El tipo de fractura más frecuente fue en el cuello del fémur (78,9% del total. El costo estimado de atención médica hospitalaria por paciente fue de USD 5 803 en el IMSS y USD 11 800 en PEMEX. Conclusiones. La prevalencia de fractura de cadera fue mayor en los usuarios del IMSS. Los costos estimados de atención por paciente fueron mayores a los reportados en otras instituciones del sistema nacional de salud mexicano.Objectives. To determine hip fracture prevalence and direct healthcare costs in elderly users of the reference hospitals of the Mexican Institute of Social Insurance (IMSS by spanish initials and Mexican Oils (PEMEX by spanish initials, from Villahermosa, Tabasco, Mexico, during 2009. Materials and methods. This is a cross-sectional study. The information was based on the registers of surgical interventions and institutional reports of the elderly inpatients who had a registered attention in their institution. Descriptive statistical analysis was performed considering the following variables: age

[Hip fracture in older adults: prevalence and costs in two hospitals. Tabasco, Mexico, 2009].

Science.gov (United States)

Quevedo-Tejero, Elsy del Carmen; Zavala-González, Marco Antonio; Hernández-Gamas, Arianna del Carmen; Hernández-Ortega, Hilda María

2011-01-01

To determine hip fracture prevalence and direct healthcare costs in elderly users of the reference hospitals of the Mexican Institute of Social Insurance (IMSS by spanish initials) and Mexican Oils (PEMEX by spanish initials), from Villahermosa, Tabasco, Mexico, during 2009. This is a cross-sectional study. The information was based on the registers of surgical interventions and institutional reports of the elderly inpatients who had a registered attention in their institution. Descriptive statistical analysis was performed considering the following variables: age, gender, hip fracture type, occurrence month, direct healthcare cost. Out of 10,765 records of hospitalized elderly, 57 hip fracture cases were found (33 in the IMSS and 24 in PEMEX). Hip fracture prevalence was 0.5%, (IMSS 1.1% and PEMEX 0.3%), being more frequent in women and older than 69. The most frequent fracture type was the femur neck one (78.9%). The estimated cost of healthcare in the hospital per patient was USD 5,803 in the IMSS and USD 11,800 in PEMEX. The hip fracture prevalence was higher in the IMSS users. Estimated healthcare costs per patient were higher than the reported in other institutions of the of the mexican health national system.

P02.05 Peripheral Nerve Sheath Tumor Epidemiology in the South Central Hospital of High Specialty from PEMEX in Mexico

Science.gov (United States)

Guerra Mora, J.; Cordoba Mosqueda, M.; Hernandez Resendiz, R.; Loya Aguilar, I.; Vicuña Gonzalez, R.; Garcia Gonzalez, U.

2016-01-01

Abstract Introduction: The peripheral sheath tumors are part of a large group of neoplasms that range from biologically benign with minimal disorders in life quality to highly malign with life quality deterioration and high mortality. There are subtypes with high prevalence like Schwannomas and some much rarer like the intracranial peripheral nerve sheath tumor which happen to have very bad prognosis. The aim of this study is to describe the epidemiologic and clinical characteristics of patients with peripheral nerve sheat tumors in a hospital of high specialty. Method and materials: Observational study with patients from March 1999 to March 2016 with confirmed diagnosis of peripheral nerve sheath tumor in the electronic files of the South Central Hospital of High Specialty PEMEX. A statistical analysis is made through the SPSS Statistics of the disease in this Institution program. Results: There were 84 patients with the diagnosis of peripheral nerve sheath tumor with a median age of 48.04 years, 65.5% were males, the most common histological type found was the Schwannoma with a 72.6%, followed by senescent Schwannoma 13.1%, neurofibroma 8.3%, and malign peripheral nerve sheath tumor 2.4%. The most frequent location was at the site of cranial nerves, followed by cervical level 27.4%, lumbar 16.7% and thoracic 9.5%. The most common initial symptom was pain in 23.8% of the patients, and the time of the onset of symptoms to the diagnosis was 31.6 months. From the total of patients 8.3% had neurofibromatosis type 1, 6.0% neurofibromatosis type 2. Conclusions: We realized in our series of reported cases that the frequency is similar to those reported in worldwide population; nevertheless the time between the onset of symptoms and the diagnosis is much higher in our cases as well as the population of patients with neurofibromatosis. This study justifies the need of attention quality improvement and the knowledge of this information the medical doctor of first

Running on Fumes: A Critical Look at Mexico’s Natural Gas Transportation and Distribution Infrastructure

Science.gov (United States)

2011-10-27

company’s revenues, but PEMEX has also been hampered in its ability to leverage private investment and ownership in developing and improving...PEMEX offers for gas distribution franchises ; the standard for exclusivity ranges from 20 to 75 years or more in much of the world, but in Mexico... vs . Government,” Revue de l’energie 53, no.1 (2002):648. 12 Juan Rosellon and Jonathan Halpern, “Regulatory Reform in Mexico’s Natural Gas Industry

Modelo simplificado de daño por fatiga para hormigón armado

OpenAIRE

Carnicero, Alberto; Perera Velamazán, Ricardo; Alarcón Álvarez, Enrique

2001-01-01

En este artículo se presenta un modelo simplificado para la evaluación de daño por fatiga de bajo ciclo en elementos estructurales de hormigón armado. Basándose en los principios fundamentales de la Mecánica de la Degradación en los Medios Continuos se formulan las leyes de comportamiento de una rótula elasto-plastodegradable, lo que constituye una generalización del concepto de rótula plástica empleado en los modelos de plasticidad concentrada utilizados en el estudio de estructu...

Mexico´s Energy Reform : an analysis of the market, new policy and integration of renewable energy for economic and sustainable development

OpenAIRE

Favela, Alfredo Rojas

2016-01-01

In the framework of the approved Energy Reform in 2013, Mexico puts an end to seven decades of centralized control of the energy and electricity markets within the government through the State governed companies CFE (Federal Electricity Commission) and PEMEX (Mexican Oil). During the largest part of last century and the beginning of the current, the Mexican government relied heavily on the revenues generated by PEMEX through the sale of oil to foreign countries and tax revenues...

The results of the Mexican election and the implications it may have on foreign investment

International Nuclear Information System (INIS)

Noble, R.

1994-01-01

The general effects of the recent Mexican election on that country's socio-economic development are discussed. Future directions of the new government include a trend toward greater deregulation, more privatization, and a greater importance of social welfare policies. The Mexican climate for new investment appears positive; the first half of 1994 saw $8 billion of foreign investment in Mexico. Canadian investment in Mexico dates from the 1850s and Mexico is now Canada's largest economic and trading partner in Latin America. Canada-Mexico trade is expected to rise to over $8 billion/y by 2000. To assist in this relationship, a Canadian Business Centre was opened in Mexico City in 1994 and programs are in place to aid potential Canadian exporters. The implications of the above developments for the oil and gas industry are examined. The Mexican state oil monopoly PEMEX is concentrating on core activities (extraction and refining of oil) and has sold almost all of its secondary petrochemical business. Private contractors can now obtain drilling contracts. PEMEX plans to invest ca $23 billion between now and 2000 and it is likely that at least some of this investment will come via partnerships between private firms and government. This is especially possible in the natural gas sector, where supply and demand are essentially in balance. Gas production will likely increase 60-80% by 2001 and Canadian companies are well suited to help bring this about. Some Canadian firms such as Novacorp and Associated Pipeline Services are already doing business with PEMEX or participating in joint ventures with Mexican firms. Suggestions are offered for doing business in Mexico

The installation IGCC power plans in the petroleum refinement: international experiences and lessons for Mexico; La instalacion de plantas IGCC en la refinacion de petroleo: experiencias internacionales y lecciones para Mexico

Energy Technology Data Exchange (ETDEWEB)

Hernandez, Joel [Ecole du Petrole et des Moteurs, Institut Franzais du Petrole, (France)

2004-06-15

In this work, are presented the technical and economic elements of the international experience for the installation of IGCC power plants in the petroleum refinement and the lessons for Mexico in the installation of this technology in PEMEX Refinacion are analyzed. The construction of IGCC power plants in the petroleum refinement has grown 14.3 % at worldwide level as of 1996, in which there was already an installed capacity of 160 MW. At the end of 2003 an installed capacity of 2,500 MW was reached. The growth in the installation of IGCC power plants fundamentally appears in Europe, being Italy and Spain leader countries in the construction of this technology in the petroleum refinement. However, countries like Holland, Japan, Singapore and the United States count on IGCC power plants for electricity and hydrogen generation, which take advantage of low value fuels such as vacuum tower residues, petroleum coke, asphalt, liquid fuels, among others. In Mexico, the installation IGCC power plants in the petroleum refinement is null, nevertheless Petroleos Mexicanos counts with the approval of the government for the installation of cogeneration power plants in its facilities. This approval would allow PEMEX to carry out projects for the installation IGCC power plants, specifically in PEMEX Refinacion, for the generation of electricity and hydrogen from the advantage of heavy residues of low economic value. The opportunity that the installation IGCC power plants in the petroleum refinement offers is directed towards the commercialization of the electricity and hydrogen, which would impel PEMEX Refinacion to enter the competition of the electrical market in Mexico. [Spanish] En este trabajo, se presentan los elementos tecnicos y economicos de la experiencia internacional para la instalacion de plantas IGCC en la refinacion de petroleo y se analizan las lecciones para Mexico en la instalacion de esta tecnologia en PEMEX Refinacion. La construccion de plantas IGCC en la

Reconstrucción de lesiones osteocondrales con fibra de carbono

OpenAIRE

Carranza Bencano, A.; Armas-Padrón, J. R.; Lozano, Mª A.

1998-01-01

Objetivo: Estudiar a largo plazo la evolución histológica de defectos osteocondrales de la rótula de conejos tratados con fibra de carbono. Material y Método: 18 conejos de raza gigante español, variedad parda, de ambos sexos, con un peso aproximado de 1.5 a 2 Kg y 18 discos Cleveland de fibra de carbono de 8 mm de diámetro (Medicarb®, fabricado por Leyland Medical International). Creación de un defecto de 6 mm. de diámetro en la superficie articular de la rótula, hasta alcanzar el teji...

Retos del uso de las tecnologías de información y comunicación en el proceso de las contrataciones públicas electrónicas: sector petrolero de México

OpenAIRE

Pérez Fuentes, Gisela María; Cantoral Domínguez, Karla

2018-01-01

Resumen: En México, la reforma en materia energética introdujo una serie de cambios en el sector petrolero, entre los que se encuentra la conformación de PEMEX como empresa productiva del Estado. En este artículo se analizan los cambios de PEMEX y el impacto del gobierno abierto en las contrataciones públicas electrónicas en materia de adquisiciones, arrendamientos y servicios, como parte de la estrategia para favorecer la libre competencia, en la que las licitaciones cumplan con los principi...

The Mexican oil industry

International Nuclear Information System (INIS)

Marcos-Giacoman, E.

1991-01-01

In the environment of growing domestic demand and enhanced international competitiveness, Petroleos Mexicanos (PEMEX)-the Mexican national oil company-faces the challenge of not only responding adequately to the rapid changes taking place in the Mexican economy, but making a significant contribution towards solid and stable growth. This paper reports that the relevant concern is how PEMEX is going to live up to these expectations. The Mexican oil industry, especially including the petrochemical sector, has great potential in terms of an ample domestic market as well as external foreign-currency-generating markets

Mexico's critical choices

International Nuclear Information System (INIS)

Marcos, E.

1990-01-01

In Mexico, the 1982 fall in international oil prices shook the national conscience and pushed the Mexican people in search of a new national image and toward the choices they must make to attain that image. But, according to the author of this paper, the country as a whole has already made critical choices for overall strategy and there are reasons for optimism. In the current economic environment of growing domestic demand and enhanced international competitiveness, the author sees PEMEX (the Mexican national oil company) facing not only the challenge of responding to the rapid changes taking place in the Mexican economy, but also making a significant contribution toward the solid and stable growth of the country. The relevant question is how PEMEX will live up to these expectations. This paper describes several steps PEMEX has taken already or is preparing to take in order to meet this challenge, including: investment in the domestic petrochemical industry; entry into the Eurobond market; development of new methods of project financing

Structural solution to the problem of differential settlement of the Venta de Carpio surface piping; Solucion estructural al problema de hundimientos diferenciales en las tuberias superficiales de Venta de Carpio

Energy Technology Data Exchange (ETDEWEB)

Vilar R, J Ivan; Espejel V, Eduardo; Melchor G, Nicolas; Alanis V, Armandina; Munoz B, Celso J; Avendano P, Lorenzo; Alvarado G, Alonso [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2004-07-01

The Venta de Carpio Terminal (TVC) is located in the municipality of Acolman, State of Mexico, with geographical coordinates 19 37' of Northern latitude, 98 58' Western longitude and an altitude of 2,283 m over the mean sea level. This terminal is one of the points of greater importance in the system of fuels transport and gas distribution so much as of PEMEX Gas y Petroquimica Basica (PGPB) as of PEMEX Refinacion (PR). The zone where the TVC is located presents a regional collapse due to the extraction of the subsoil water, which can cause damages to this terminal piping systems. As a solution to this problem it is proposed a process of re-lay the foundations of the supports for the mentioned piping systems. [Spanish] La Terminal Venta de Carpio (TVC) se localiza en el municipio de Acolman, Estado de Mexico, con coordenadas geograficas 19 37' de latitud Norte, 98 58' longitud Oeste y una altura de 2,283 m sobre el nivel medio del mar. Esta terminal es uno de los puntos de mayor importancia en el sistema de transporte y distribucion de energeticos tanto de Pemex Gas y Petroquimica Basica (PGPB) como de Pemex Refinacion (PR). La zona donde se ubica la TVC presenta un hundimiento regional debido a la extraccion del agua del subsuelo, lo que puede ocasionar danos a las tuberias de esta terminal. Como solucion a este problema se propone un proceso de recimentacion de los soportes para las tuberias mencionadas.

Structural solution to the problem of differential settlement of the Venta de Carpio surface piping; Solucion estructural al problema de hundimientos diferenciales en las tuberias superficiales de Venta de Carpio

Energy Technology Data Exchange (ETDEWEB)

Vilar R, J. Ivan; Espejel V, Eduardo; Melchor G, Nicolas; Alanis V, Armandina; Munoz B, Celso J; Avendano P, Lorenzo; Alvarado G, Alonso [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2004-07-01

The Venta de Carpio Terminal (TVC) is located in the municipality of Acolman, State of Mexico, with geographical coordinates 19 37' of Northern latitude, 98 58' Western longitude and an altitude of 2,283 m over the mean sea level. This terminal is one of the points of greater importance in the system of fuels transport and gas distribution so much as of PEMEX Gas y Petroquimica Basica (PGPB) as of PEMEX Refinacion (PR). The zone where the TVC is located presents a regional collapse due to the extraction of the subsoil water, which can cause damages to this terminal piping systems. As a solution to this problem it is proposed a process of re-lay the foundations of the supports for the mentioned piping systems. [Spanish] La Terminal Venta de Carpio (TVC) se localiza en el municipio de Acolman, Estado de Mexico, con coordenadas geograficas 19 37' de latitud Norte, 98 58' longitud Oeste y una altura de 2,283 m sobre el nivel medio del mar. Esta terminal es uno de los puntos de mayor importancia en el sistema de transporte y distribucion de energeticos tanto de Pemex Gas y Petroquimica Basica (PGPB) como de Pemex Refinacion (PR). La zona donde se ubica la TVC presenta un hundimiento regional debido a la extraccion del agua del subsuelo, lo que puede ocasionar danos a las tuberias de esta terminal. Como solucion a este problema se propone un proceso de recimentacion de los soportes para las tuberias mencionadas.

[Mexican] Private-sector petroleum companies and agents

International Nuclear Information System (INIS)

1993-07-01

An overview is presented of the Mexican petroleum sector. The sector is largely controlled by the state company PEMEX and is not completely open to foreign participation and supply, however the trend towards privatization and open competition, combined with the drive for competitiveness of PEMEX operations in particular, is creating market opportunities for foreign suppliers of petroleum equipment and services. Detailed profiles are provided of 50 Mexican companies and their primary products and services, specific areas of expertise, client base, international experience, interest in Canada, other relevant information, and a contact person. A less detailed list is also provided of additional Mexican contacts, petroleum industry associations and chambers of commerce

Characteristics of the oil transport network in the South of Mexico

Science.gov (United States)

Juárez, R.; Fernández, I. Y.; Guzmán, L.

2017-01-01

We present a study of some organizational properties of the oil transport network of the Mexican oil company (PEMEX) in a region of the State of Tabasco. Particularly, the generalized centrality and the distribution of connectivities are calculated in order to evaluate some aspects of the structure of the network. We find that the connectivities (k) are characterized by a degree distribution which follows a power-law function of the form, P(k)~k -λ, with λ = 2.6. Moreover, our procedure permits to evalute the importance of lines (ducts) and nodes, which can be wells, production headers, separation batteries and petrochemical complexes.

Population health state

International Nuclear Information System (INIS)

1993-01-01

General conception on the Chernobyl accident effect on the human health (persons took part in the emergency response, children and adults in the Chernobyl region as a whole) is given. Pattern of population disease incidence in the whole region was compared with that of contaminated regions in Russia. New method for assessment of population disease incidence in the contaminated zones due to the Chernobyl accident is proposed taking into account low dose radiation effects, territory ecological difference, medical-demographic unhomogeneity of the population and personal instability. Methods of complex mathematical analysis were used. Data on the Tula region are presented as an example. 17 figs.; 6 tabs

AcquisitionFootprintAttenuationDrivenbySeismicAttributes

Directory of Open Access Journals (Sweden)

Cuellar-Urbano Mayra

2014-04-01

Full Text Available Acquisition footprint, one of the major problems that PEMEX faces in seismic imaging, is noise highly correlated to the geometric array of sources and receivers used for onshore and offshore seismic acquisitions. It prevails in spite of measures taken during acquisition and data processing. This pattern, throughout the image, is easily confused with geological features and misguides seismic attribute computation. In this work, we use seismic data from PEMEX Exploración y Producción to show the conditioning process for removing random and coherent noise using linear filters. Geometric attributes used in a workflow were computed for obtaining an acquisition footprint noise model and adaptively subtract it from the seismic data.

Performance study of a combined cycle power plant with integral gasification; Estudio del desempeno de una planta de potencia de ciclo combinado con gasificacion integral

Energy Technology Data Exchange (ETDEWEB)

Gonzalez Rocha, Jose Clemente

2007-04-15

con alto valor agregado, como la gasolina, turbosina o diesel, entre otros. Con la nueva reconfiguracion de las refineria mexicanas de Cd. Madero y Cadereyta y proximamente la terminacion de la reconfiguracion de la refineria de Minatitlan, Veracruz, grandes cantidades de coque se estaran produciendo, con la posibilidad de usarlo mediante la tecnologia de gasificacion para producir un gas sintetico limpio (gasl) con caracteristicas energeticas apropiadas para utilizarse como combustible en un ciclo combinado existente en Mexico. En Mexico se han estimado las posibilidades de generacion de energia electrica a partir del uso del coque de petroleo utilizado la tecnologia de gasificacion o usando generadores de vapor de lecho fluidizado, como es el caso de las planta de potencia TEG en Taquin, San Luis Potosi. Tal es el hecho, que actualmente PEMEX refinacion, tiene terminado el proyecto para construir en Tuxpan, Veracruz una refineria procesadora de crudo Maya con un alto contenido de azufre y junto a la termoelectrica de Tuxpan, contemplandose la posibilidad de aplicar el concepto de ciclo combinado con gasificacion integrada (CCGI); con esta infraestructura sera posible consumir el coque generado por las refinerias mexicanas. La generacion electrica esperada es de 500 MW, de los cuales 100 MW seran para consumo propio de la refineria y 400 MW libres para cubrir la demanda de energia electrica de la zona noreste y centro del pais. El coque de petroleo derivado de las refinerias del pais puede ser utilizado para la generacion limpia de electricidad mediante su gasificacion e integracion a una planta de ciclo combinado existente. La ubicacion estrategia del ciclo combinado Tula, el cual se encuentra adyacente a la refineria Miguel Hidalgo presenta la oportunidad de aplicar la tecnologia de gasificacion como una alternativa viable: primeramente, para la utilizacion de coque de petroleo que actualmente se esta produciendo en las refinerias de Mexico o la utilizacion del

Prevalence of uterine diseases in healthy women with hysteroscopy as part of routine gynecological evaluation

Directory of Open Access Journals (Sweden)

J.C. Paredes Palma

2016-10-01

Conclusions: Hysteroscopy showed a high prevalence of detecting uterine pathologies that were never previously described in a population of healthy women in a common sample of patients attending the outpatient Hospital Pemex Picacho.

The SLIMITRE system: T-P-CCL registry in high temperature oil wells; El sistema SLIMITRE: registro T-P-CCL en pozos petroleros de alta temperatura

Energy Technology Data Exchange (ETDEWEB)

Iglesias R, Eduardo and others [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2001-07-01

PEMEX Exploration and Production (PEP), through its Management of Well Productivity of the Subdivision of Technology and Professional Development (GTDP) and of its Active Luna, faced the problematic of carrying out simultaneous recordings of temperature and pressure in high temperature flowing wells. Capitalizing the experience and know-how of the Gerencia de Geotermia (GG) of the Instituto de Investigaciones Electricas (IIE) in this field, it ordered the resolution of the described problematic, by means of the development of appropriate tools. In order to compliment this order, the GG of the IIE developed the SLIMETRE system, in close collaboration with the personnel of PEP involved in the project. This project framed in the Agreement of Collaboration for the rendering of services between PEMEX Exploration and Production and the Instituto de Investigaciones Electricas. In the sections that follow appear the main parameters of design, the architecture of the system is explained, the tools and the subsystem of data acquisition are described; the obtained results are exposed and the conclusions appear. [Spanish] Pemex Exploracion y Produccion (PEP), a traves de su Gerencia de Productividad de Pozos de la Subdireccion de Tecnologia y Desarrollo Profesional (GTDP) y de su Activo Luna, encaro la problematica de efectuar registros simultaneos de temperatura y presion en pozos fluyentes de alta temperatura. Capitalizando la experiencia y know-how de la Gerencia de Geotermia (GG) del Instituto de Investigaciones Electricas (IIE) en dicho campo, le encargo la resolucion de la problematica descrita, mediante el desarrollo de herramientas apropiadas. Para cumplimentar dicho encargo, la GG del IIE desarrollo el sistema SLIMETRE, en estrecha colaboracion con el personal de PEP involucrado en el proyecto. Este proyecto se enmarco en el Convenio de Colaboracion para la prestacion de servicios entre Pemex Exploracion y Produccion y el Instituto de Investigaciones Electricas. En

Data reduction and tying in regional gravity surveys—results from a new gravity base station network and the Bouguer gravity anomaly map for northeastern Mexico

Science.gov (United States)

Hurtado-Cardador, Manuel; Urrutia-Fucugauchi, Jaime

2006-12-01

Since 1947 Petroleos Mexicanos (Pemex) has conducted oil exploration projects using potential field methods. Geophysical exploration companies under contracts with Pemex carried out gravity anomaly surveys that were referred to different floating data. Each survey comprises observations of gravity stations along highways, roads and trails at intervals of about 500 m. At present, 265 separate gravimeter surveys that cover 60% of the Mexican territory (mainly in the oil producing regions of Mexico) are available. This gravity database represents the largest, highest spatial resolution information, and consequently has been used in the geophysical data compilations for the Mexico and North America gravity anomaly maps. Regional integration of gravimeter surveys generates gradients and spurious anomalies in the Bouguer anomaly maps at the boundaries of the connected surveys due to the different gravity base stations utilized. The main objective of this study is to refer all gravimeter surveys from Pemex to a single new first-order gravity base station network, in order to eliminate problems of gradients and spurious anomalies. A second objective is to establish a network of permanent gravity base stations (BGP), referred to a single base from the World Gravity System. Four regional loops of BGP covering eight States of Mexico were established to support the tie of local gravity base stations from each of the gravimeter surveys located in the vicinity of these loops. The third objective is to add the gravity constants, measured and calculated, for each of the 265 gravimeter surveys to their corresponding files in the Pemex and Instituto Mexicano del Petroleo database. The gravity base used as the common datum is the station SILAG 9135-49 (Latin American System of Gravity) located in the National Observatory of Tacubaya in Mexico City. We present the results of the installation of a new gravity base network in northeastern Mexico, reference of the 43 gravimeter surveys

Oil's role in free trade agreement crux of Mexico's petroleum sector dilemma

International Nuclear Information System (INIS)

Anon.

1992-01-01

Mexico's president Salinas' efforts at privatization have not yet touched Mexico's most valuable industry, oil. That remains under control of state owned Petroleos Mexicanos. Pemex and Mexico's huge oil union have come under increasing criticism for alleged abuses of power. In addition, controversy rages as to the true extent of Mexican oil resources and whether Pemex has the wherewithal to meet domestic demand and sustain oil exports. Critics also contend opening Mexico's oil sector to foreign participation would introduce new efficiencies and cost cutting measures in the cash strapped state oil industry. This paper reports that at the center of the controversy is the proposed Free Trade Agreement among Mexico, the U.S., and Canada, pushed strongly by Salinas. Oil's role in the FTA may prove the pact's main sticking point

Managing Mexican Oil: Politics or Economics?

Directory of Open Access Journals (Sweden)

Alicia Puyana Mutis

2008-07-01

Full Text Available During decades the policies towards oil and energy implemented in Mexico have resulted in the de pletion of reserves, the explosion of debt of Pemex (90 per cent of its capital, and the dramatic petrolization of the total fiscal revenue. High prices, the war on terror and political instability in oil rich regions have reinforced usA policy of "energy security" and the interest in the creation of the Common Market on Energy, as the way to strengthen the TLCAN. To respond to these two forces Mexico will have to reform its traditional oil policy. All possible options: to reduce the fiscal burden upon Pemex or to open to private investments the exploration of oil have excruciating political costs, which no government has shown the will to confront.

78 FR 38031 - Application for Final Commitment for a Long-Term Loan or Financial Guarantee in Excess of $100...

Science.gov (United States)

2013-06-25

... Mexicanos to finance the purchase of U.S. goods and services from U.S. small businesses to be used in Pemex...: Principal Supplier(s): IPS International, LLC. Quantum Reservoir Impact, LLC. Micro Smart Systems, Inc...

Exploring the KT source crater: Progress and future prospects

Science.gov (United States)

Sharpton, Virgil L.

It has been 15 years since an iridium-enriched clay layer at the Cretaceous-Tertiary (KT) boundary was discovered, providing the first hard evidence linking the most recent mass extinction event to a comet or asteroid strike [Alvarez et al., 1980]. Now it is widely accepted that the site of this collision is on the Yucatan platform, centered near Progreso, Mexico. The 200-300-km-wide crater lies buried beneath 300-1000 m of limestone laid down in the intervening 65 million years, and few clues of its presence remain at the surface, save an arcuate arrangement of water-filled sinkholes centered approximately on the structure (Figure 1). Yet prominent circular anomalies in gravity and magnetic anomaly maps gained the interest of Petroleos Mexicanos (Pemex), and in the early 1950s they began an exploration campaign that included deep drilling to recover samples of the subsurface rocks. The buried feature became known as the Chicxulub structure. Pemex drilling continued throughout the early 1970s and by that time, three wells near the center had recovered silicate rocks with igneous textures, initially mistaken for volcanic rocks. Other wells, located between 130 km and 210 km from ground zero recovered breccia deposits hundreds of meters thick that showed evidence of catastropic or explosive conditions. By 1980, Antonio Camargo, a geophysicist at Pemex, felt the evidence pointed to impact, although a volcanic origin for the Chicxulub structure could not be ruled out.

Mexico; Mexique

Energy Technology Data Exchange (ETDEWEB)

NONE

2003-06-01

This document summarizes the key energy data for Mexico: 1 - energy organizations and policy: Ministry of energy (SENER), Comision Reguladora de Energia (CRE), Ministry of Finances, Ministry of trade and industrial development (SECOFI), national commission for energy savings (CONAE); 2 - companies: federal commission of electricity (CFE), Minera Carbonifera Rio Escondido (MICARE - coal), Pemex (petroleum); 3 - energy production: resources, electric power, petroleum, natural gas; 4 - energy consumption; 5 - stakes and perspectives. Some economic and energy indicators are summarized in a series of tables: general indicators, supply indicators (reserves, refining and electric capacity, energy production, foreign trade), demand indicators (consumption trends, end use, energy independence, energy efficiency, CO{sub 2} emissions), energy status per year and per energy source. (J.S.)

Mexico

International Nuclear Information System (INIS)

2003-06-01

This document summarizes the key energy data for Mexico: 1 - energy organizations and policy: Ministry of energy (SENER), Comision Reguladora de Energia (CRE), Ministry of Finances, Ministry of trade and industrial development (SECOFI), national commission for energy savings (CONAE); 2 - companies: federal commission of electricity (CFE), Minera Carbonifera Rio Escondido (MICARE - coal), Pemex (petroleum); 3 - energy production: resources, electric power, petroleum, natural gas; 4 - energy consumption; 5 - stakes and perspectives. Some economic and energy indicators are summarized in a series of tables: general indicators, supply indicators (reserves, refining and electric capacity, energy production, foreign trade), demand indicators (consumption trends, end use, energy independence, energy efficiency, CO 2 emissions), energy status per year and per energy source. (J.S.)

Can Latin American Oil Companies Free Themselves from the Legacy of Nationalization? (Can Latin American Oil and Gas Companies Break Free of Their Nationalized Past?) - CERI Studies No. 183

International Nuclear Information System (INIS)

Rousseau, Isabelle

2012-01-01

Latin America's national oil companies, created at various times during the twentieth century, have each evolved in a different way. The two main companies - Petroleos de Mexico (Pemex) and Petroleos de Venezuela (PDVSA) - provide excellent illustrations of the rich diversity of organizational and industrial development. Many factors - such as the importance of earth quakes - explain the diversity. Nevertheless, the role of governments during the period of nationalizations is key. It was then that the relationships between the owners of natural resources, public operators, regulators, the finance ministries, and international operators were defined. This process shaped the companies' institutional structures (path dependency) and set the parameters for future entrepreneurial dynamism. The path by which each of these enterprises developed continues to affect their culture as evidenced by the recent reforms which attempted to restructure Pemex and PDVSA. (author)

The competitive forces of the natural gas industry of Mexico; Las fuerzas competitivas de la industria del gas natural de Mexico

Energy Technology Data Exchange (ETDEWEB)

Buendia Servin de la Mora, Neil Spar [Facultad de Ingenieria, UNAM (Mexico)

1997-07-01

The present paper is intended to identify the structural characteristics of the natural gas national industry, that determines the intensity of the forces in competition. To know the ambient where PEMEX-Gas and Basic Petrochemistry will compete, the distributors and the partnerships formed by national and foreign companies is fundamental, since the forces that affect the market determine the attractiveness of the industry, the gain margins, investments, et cetera. [Spanish] En el presente trabajo se pretende identificar las caracteristicas estructurales de la industria nacional del gas natural, que determinan lo intenso de las fuerzas en competencia. Conocer el ambiente en donde competiran PEMEX-Gas y Petroquimica Basica, las distribuidoras nacionales y los consorcios formados por empresas nacionales y extranjeras es primordial, puesto que las fuerzas que inciden al mercado determinan el atractivo de la industria, los margenes de ganancia, inversiones, etcetera.

P17.05 Epidemiology and clinical in patients with primary and secondary lymphomas with a nervous system condition in the South Central Hospital of High Specialty from PEMEX in Mexico

Science.gov (United States)

Cordoba Mosqueda, M.; Guerra Mora, J.; Hernandez Resendiz, R.; Loya Aguilar, I.; Vicuña Gonzalez, R.; Ibarra de la Torre, A.; Garcia Gonzalez, U.

2016-01-01

Abstract Introduction: Primary lymphomas of the central nervous system are a type of Non Hodgkin Lymphoma with high morbidity and mortality. They are frequently associated with HIV infection, nevertheless the prevalence in non HIV patients has been tripled recently without any justified cause. In occasions it is difficult to identify the difference between primary and secondary origin in the central nervous system, this is crucial since the prognosis also changes. Method and Materials: Observational study with a range of patients from March 1999- March 2016 with reported diagnosis of Non Hodgkin Lymphoma with Central Nervous System involvement inside the electronic files of the South Central Hospital of High Specialty PEMEX. A statistical analysis is made through the SPSS Statistics of the Disease in this Institution program. Results: There were a total of 20 patients found with the diagnosis of Non Hodgkin Lymphoma with Central Nervous System involvement with a media of 57.7 ± 16 years of age, 60% males. 45% were classified as primary; multiple variables were analyzed such as the histological subtype from which the most common was Giant B cell types in a 40%. Within the symptoms the most common was headheach and pyramidal syndrome with 25%. At the time of diagnosis we found that with most prevalence ECOG of the population was of 1 reported case of 55 % of patients, nevertheless the survival rate after diagnosis had a global media of 40.3 ± 21 months, being of 56 months in secondary lymphoma and of 16 months in primary lymphoma, there were no significant statistical differences in both groups. Conclusions: The clinical and epidemiological characteristics in both groups were similar to the ones reported in the literature, nonetheless compared with the time of diagnosis based on the ECOG the overall rate of survival in both groups is low, which brings a great challenge for medical and surgical management. It is important to denote that the clinical

14. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 14. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

Energy Technology Data Exchange (ETDEWEB)

NONE

1994-12-31

Selected papers from the 14th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, PEMEX, and FIDE.

14. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 14. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

Energy Technology Data Exchange (ETDEWEB)

NONE

1993-12-31

Selected papers from the 14th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, PEMEX, and FIDE.

[Selenium status of the inhabitants in the Kaluga region].

Science.gov (United States)

Golubkina, N A; Mal'tsev, G Iu; Bogdanov, N G; Vlaskina, S G; Alekseeva, I A; Khotimchenko, S A

1995-01-01

The human Se status of 8 areas of Kaluga region was studied. The mean serum Se levels 94 mg/l was significantly lower in the south compared to the northern area 126 mg/l. Areas with radioactive pollution possessed higher percentage of persons with low serum Se concentration than in regions without the pollution. Negative influence of radiation on serum Se level was confirmed also by epidemiological data for workers of Chernobil NNP (65 mg/l-workers attending to the reactor and 69 mg/l-for other employees). The same phenomenon was observed for males of Tula region who had taken part in the liquidation of an accident on the Chernobil NNP compared to other inhabitants of Tula region (78 mg/l and 89 mg/l correspondingly). The lowest antioxidant status (serum vitamin E, C and Se concentrations) in towns of Kaluga region with radioactive pollution possessed males of less than 60 years old.

Disease: H00312 [KEGG MEDICUS

Lifescience Database Archive (English)

Full Text Available H00312 Tularemia Tularemia is a rare zoonotic infection caused by the bacterium Fr...edlinePlus: 000856 PMID:19713053 (description, env_factor) ... AUTHORS ... Foley JE, Nieto NC ... TITLE ... Tula...remia. ... JOURNAL ... Vet Microbiol 140:332-8 (2010) DOI:10.1016/j.vetmic.2009.07.017

From the end of a revolution to the beginning of an evolution: An interpretive investigation on the Mexican oil culture

Science.gov (United States)

Marquez-Perez, Pedro Gabriel

2001-07-01

This dissertation is an interpretative investigation on the Mexican petroleum industry. It studies the social arrangement that allowed the development of Mexico's most important State-Owned Enterprise Petroleos Mexicanos and the current pressures to transform it. The need to modify its operations in Mexico is an issue of enormous significance for the current reforms undertaken by the Neo-liberal project initiated during the mid 1980's. It represents the abandonment of the development strategy that characterized the "Regime of the Revolution" and the establishment of a market-oriented economy in line with the development strategy selected by the President Fox for the period 2000--2006. Through an approximation of Habermas' ideal 'Public Sphere' this dissertation reveals relevant information about PEMEX's historical and present contexts, the basic elements that make up the Mexican petroleum culture, its major interest groups, their mutual perspectives and understandings, their interpretation of the present situation and their opinion as to the way PEMEX should be modified. The investigation into the ideas, beliefs and customs that justified PEMEX's hegemony over Mexico's petroleum resources followed the conceptual model provided by the Critical Theory Paradigm and an adaptation of a methodological approach previously employed for qualitative Critical Theory research. Throughout an ethnographic analysis of twenty-six representatives of PEMEX's major interest groups through in-depth, semi-structured interviews based on a combination of an interpretative research design and a case-study research method, the beliefs, ideals, mutual perceptions and future plans of these stakeholders were identified. This study advances the understanding of the symbols, beliefs and ideas that have framed Mexican petroleum culture, as well as describes how these beliefs and ideas have changed over time. Through an 'ethnography of rhetoric,' this project facilitated the absorption and

Concursos

Directory of Open Access Journals (Sweden)

Boletín Cultural y Bibliográfico Banco de la República

1990-05-01

Full Text Available Se presenta la información y bases de los siguientes premios y concursos: Bienal del humor y la sátira; Concurso Enka de Literatura Infantil; Concurso literario editorial Diana y novedades; Premio Eloy Valenzuela; Diseño de carátulas y comentarista de libros.

A Long-Term United States’ Energy Policy Without Venezuelan Oil

Science.gov (United States)

2009-04-01

Petroleos de Venezuela Sociedad Anonima (PDVSA), at least 51 percent share in new oil production and exploration. 8 In December 2001, business leaders... Petroleos Mexicanos (PEMEX), and today turns 61 percent of its revenues over to the government, accounting for 40 percent of Mexico’s budget. 76

Opportunities - oil and gas development in the Mexican market

International Nuclear Information System (INIS)

1997-01-01

This review of business opportunities is intended as a guide for Alberta companies who are interested in investing or otherwise participating in the Mexican oil and gas industry. The guide provides a brief summary of Mexico, its political, legal and economic system, a brief review of the Mexican oil and gas industry, environmental legislation, the financial institutions, labour/management relations and overseas trade relations. Opportunities for Alberta firms in the Mexican resources industry are identified. Steps to follow for anyone contemplating business with Pemex, the state-owned oil company, are outlined and sources of assistance available to Alberta companies are reviewed. There are various lists of private consultants, Canadian banks in Mexico, accounting firms, customs brokers, freight forwarders and tips on Canadian and Mexican sources of financing. There is also a summary of commercial regulations between Pemex and its suppliers, and an organization chart of the Exploration and Production Branch of Petroleos Mexicanos. tabs., figs

Depletion velocities for atmospheric pollutants oriented To improve the simplified regional dispersion modelling

International Nuclear Information System (INIS)

Sanchez Gacita, Madeleine; Turtos Carbonell, Leonor; Rivero Oliva, Jose de Jesus

2005-01-01

The present work is aimed to improve externalities assessment using Simplified Methodologies, through the obtaining of depletion velocities for primary pollutants SO 2 , NO X and TSP (Total Suspended Particles) and for sulfate and nitrate aerosols, the secondary pollutants created from the first ones. The main goal proposed was to estimate these values for different cases, in order to have an ensemble of values for the geographic area, among which the most representative could be selected for using it in future studies that appeal to a simplified methodology for the regional dispersion assessment, taking into account the requirements of data, qualified manpower and time for a detailed approach. The results where obtained using detailed studies of the regional dispersion that were conduced for six power facilities, three from Cuba (at the localities of Mariel, Santa Cruz and Tallapiedra) and three from Mexico (at the localities of Tuxpan, Tula and Manzanillo). The depletion velocity for SO 2 was similar for all cases. Results obtained for Tallapiedra, Santa Cruz, Mariel and Manzanillo were similar. For Tula and Tuxpan a high uncertainty was found

Parametric Trajectory Program

Science.gov (United States)

1976-10-01

TULA 444 URITEI6.95) 179 180 49 NWC TP 5864 179 176 ISO + REAO(5.3IO> . NTAB.VKT.QE. \\TEMP.ZT.ZO ^ /CALL EXIT\\ READɝ.311> IX.RIY.UTO.VO...11472. 984. 11514. 966. 11555. 949. 11596. 931. D1ST DRAG 11187. .176 11228. .175 11270. .174 11311. .173 11352 . .172 11393. .171

Dicty_cDB: VSG433 [Dicty_cDB

Lifescience Database Archive (English)

Full Text Available G08F1 : T3 end of clone MtBC23G08 of cDNA library MtBC from arbuscular mycorrhiza...tula EST MtBC26G02F1 : T3 end of clone MtBC26G02 of cDNA library MtBC from arbuscular mycorrhiza of cultivar

Chemical modeling of formation water of the active Luna, Tabasco; Modelacion quimica de aguas de formacion del activo Luna, Tabasco

Energy Technology Data Exchange (ETDEWEB)

Barragan R, Rosa M; Portugal M, Enrique; Arellano G, Victor M. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Martinez A, Ana E; Ascencio C, Fernando [Petroleos Mexicanos (Mexico)

2001-07-01

From the data of chemical composition of the water, the chemical equilibrium at a given temperature can be modeled for, later, obtain the saturation indexes of characteristic minerals with the intention of knowing or predict which phases can form the deposits. The Gerencia de Productividad de Pozos (GPP) of the Subdivision of Technology and Professional Development (STDP) of PEMEX, has among its objectives to promote studies tending to solve problematic that affect the wells productivity, reason why it showed interest in making a study of chemical modeling of formation waters of the Active Luna, in order to know the saturation state of the main mineral phases. This way a joint project was executed in 1997 among the GPP, the Active of Production Luna of PEMEX and the Gerencia de Geotermia of the IIE. The objectives of the project were: (a) sampling and physicochemical characterization of waters pertaining to oil wells of the Actives of Production Luna, and (b) modeling of the chemical equilibrium at well head and deposit conditions to obtain saturation indexes of characteristic minerals of hydrothermal systems, in order to predict the mineral phases that can be found in superficial and deep incrustations. [Spanish] A partir de los datos de composicion quimica del agua, pude modelarse el equilibrio quimico a una temperatura dada para, posteriormente, obtener los indices de saturacion de los minerales caracteristicos con el objeto de conocer o predecir cuales fases pueden formar los depositos. La Gerencia de Productividad de Pozos (GPP) de la Subdireccion de Tecnologia y Desarrollo Profesional (STDP) de Pemex, tiene entre sus objetivos promover estudios tendientes a resolver problematicas que impactan la productividad de los pozos, por lo que mostro interes en realizar un estudio de modelacion quimica de las aguas de formacion del Activo Luna, con el proposito de conocer el estado de saturacion de las principales fases minerales. De esta forma se realizo un proyecto

Characteristics of the NO-NO2-O3 system in different chemical regimes during the MIRAGE-Mex field campaign

Science.gov (United States)

Shon, Z.-H.; Madronich, S.; Song, S.-K.; Flocke, F. M.; Knapp, D. J.; Anderson, R. S.; Shetter, R. E.; Cantrell, C. A.; Hall, S. R.; Tie, X.

2008-12-01

The NO-NO2 system was analyzed in different chemical regimes/air masses based on observations of reactive nitrogen species and peroxy radicals made during the intensive field campaign MIRAGE-Mex (4 to 29 March 2006). The air masses were categorized into 5 groups based on combinations of macroscopic observations, geographical location, meteorological parameters, models, and observations of trace gases: boundary layer (labeled as "BL"), biomass burning ("BB"), free troposphere (continental, "FTCO" and marine, "FTMA"), and Tula industrial complex ("TIC"). In general, NO2/NO ratios in different air masses are near photostationary state. Analysis of this ratio can be useful for testing current understanding of tropospheric chemistry. The ozone production efficiency (OPE) for the 5 air mass categories ranged from 4.5 (TIC) to 8.5 (FTMA), consistent with photochemical aging of air masses exiting the Mexico City Metropolitan Area.

Dicty_cDB: SHD704 [Dicty_cDB

Lifescience Database Archive (English)

Full Text Available tula EST MtBC33D01R1 : T7 end of clone MtBC33D01 of cDNA library MtBC from arbuscular mycorrhiza of cultivar...3D01F1 : T3 end of clone MtBC33D01 of cDNA library MtBC from arbuscular mycorrhiza of cultivar Jemalong of M

Environmental Assessment for the Tula Peak Road Intersection

Science.gov (United States)

2009-07-01

Track. The result was a SABER project to modify the existing intersection. The proposed project (see map pg 3 and EPF 20080004 in appendices) was to...environmental clearance under 32 CFR 989.13. A second SABER project (see map on pg 3 and appendices EPF 20080433) took a more aggressive approach to...Outlook White Sands Missile Range Appendices A- Memo For Record from phone conversation RE: stop action of construction with NMDGF B- EPF 20080004 C

Structural and Tectonic Map Along the Pacific-North America Plate Boundary in Northern Gulf of California, Sonora Desert and Valle de Mexicali, Mexico, from Seismic Reflection Evidence

Science.gov (United States)

Gonzalez-Escobar, M.; Suarez-Vidal, F.; Mendoza-Borunda, R.; Martin Barajas, A.; Pacheco-Romero, M.; Arregui-Estrada, S.; Gallardo-Mata, C.; Sanchez-Garcia, C.; Chanes-Martinez, J.

2012-12-01

Between 1978 and 1983, Petróleos Mexicanos (PEMEX) carried on an intense exploration program in the northern Gulf of California, the Sonora Desert and the southern part of the Mexicali Valley. This program was supported by a seismic reflection field operation. The collected seismic data was 2D, with travel time of 6 s recording, in 48 channels, and the source energy was: dynamite, vibroseis and air guns. Since 2007 to present time, the existing seismic data has been re-processing and ire-interpreting as part of a collaboration project between the PEMEX's Subdirección de Exploración (PEMEX) and CICESE. The study area is located along a large portion of the Pacific-North America plate boundary in the northern Gulf of California and the Southern part of the Salton Trough tectonic province (Mexicali Valley). We present the result of the processes reflection seismic lines. Many of the previous reported known faults were identify along with the first time described located within the study region. We identified regions with different degree of tectonic activity. In structural map it can see the location of many of these known active faults and their associated seismic activity, as well as other structures with no associated seismicity. Where some faults are mist placed they were deleted or relocated based on new information. We included historical seismicity for the region. We present six reflection lines that cross the aftershocks zone of the El Mayor-Cucapah earthquake of April 4, 2010 (Mw7.2). The epicenter of this earthquake and most of the aftershocks are located in a region where pervious to this earthquake no major earthquakes are been reported. A major result of this study is to demonstrate that there are many buried faults that increase the seismic hazard.

Free trade and freer petchems drive Mexican restructuring

International Nuclear Information System (INIS)

Wood, A.

1992-01-01

When Mexico first opened up its protected markets in 1987 by cutting import tariffs, it thrust the chemical industry into a phase of change. Now, with the advent of the North American Free Trade Agreement(NAFTA) and the liberalization of petrochemicals by state oil group Petroleos Mexicanos (Pemex), restructuring has moved up a gear

Energy. Chapter 4; Energia. Capitulo 4

Energy Technology Data Exchange (ETDEWEB)

Martin del Castillo, Carlos [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

2009-07-01

This chapter stands out that the infrastructure for the electric energy generation, as well as the one departing from fossil fuels has been the responsibility of two institutions with great solvency in the scope of engineering: the Comision Federal de Electricidad (CFE) and Petroleos Mexicanos (PEMEX). It is presented here the energy future in a sustainable context; a prospective study to year 2050; a strategic proposal of Petroleos Mexicanos; the forecast of the oil industry in Mexico and a technological prospective of the energy. [Spanish] En este capitulo se destaca que la infraestructura para la generacion de energia, tanto electrica como a partir de combustibles fisiles ha corrido a cargo de dos instituciones con gran solvencia en el ambito de la ingenieria: la Comision Federal de Electricidad (CFE) y Petroleos Mexicanos (Pemex). Se presenta el futuro de la energia en un contexto sustentable; un estudio prospectivo al ano 2050; una propuesta estrategica de Petroleos Mexicanos; la prospectiva de la industria petrolera en Mexico y; una prospectiva tecnologica de la energia.

CTC Sentinel (Volume 5, Issue 6, June 2012)

Science.gov (United States)

2012-06-01

Los Zetas fought to retain control over a PEMEX well near Ciudad Mier, 3 Julie López, “The Zetas’ Bad Omen,” ReVista (Winter 2012). 4 John P...that there are 4,000-5,000 in- surgents and 300 people in leadership positions. See “Prayuth Calls for Inclusive Peace Talks,” Bangkok Post, April 3

Bioavailability of caesium-137 from chernozem soils with high and low levels of radioactive contamination

Science.gov (United States)

Paramonova, Tatiana; Shamshurina, Eugenia; Machaeva, Ekaterina; Belyaev, Vladimir

2014-05-01

Bioavailability of Cs-137 in "soil-plant" system of radioactively contaminated terrestrial ecosystems is the most important factor in the understanding of ecological situation. There are many factors affecting the features of Cs-137 biogeochemical cycle: period since an accident, type and intensity of radioactive fallout, general properties of landscape and the specifics of soil and plant covers, etc. In order to evaluate the importance of soil contamination level for the process of Cs-137 translocation from soil to plant the research in forest-steppe areas of Russia with similar natural properties, but contrasting high (Tula region) and low (Kursk region) levels of radioactive Chernobyl fallout (about 25 years after accident) was conducted. Soil cover of both sites is presented by chernozems with bulk density 1.1-1.2 g/cm3, 6-7% humus and neutral pH 6.5-7.2; plant cover under investigation consist of dry and wet meadows with bioproductivity 1.6-2.5 kg/m2 and 85-90% of biomass concentrated underground, that is typical for Russian forest-steppe landscapes. At the same time levels of soil regional contamination with Cs-137 differ by an order - 620-710 Bq/kg (210-250 kBq/m2) in Tula region and 30-55 Bq/kg (10-20 kBq/m2) in Kursk region. At a higher level of soil radioactive contamination specific activity of Cs-137 in vegetation of meadows is noticeably increased (103-160 Bq/kg in Tula region versus 12-14 Bq/kg in Kursk region) with correlation coefficient r 0.87. Increasing of Cs-137 in the underground parts of plants plays a decisive role in this process, while the specific radionuclide's activity in the aboveground parts of different sites is almost invariant (and ubiquitously roots contain 2-5 times more Cs-137 than shoots). The values of transfer factors for Cs-137 (the ratio of the specific Cs-137 activities in the plant tissue and in the soil) at various levels of soil radioactive contamination vary within a relatively narrow range 0.1-0.4, that confirms the

Characteristics of the NO-NO2-O3 system in different chemical regimes during the MIRAGE-Mex field campaign

Directory of Open Access Journals (Sweden)

X. Tie

2008-12-01

Full Text Available The NO-NO2 system was analyzed in different chemical regimes/air masses based on observations of reactive nitrogen species and peroxy radicals made during the intensive field campaign MIRAGE-Mex (4 to 29 March 2006. The air masses were categorized into 5 groups based on combinations of macroscopic observations, geographical location, meteorological parameters, models, and observations of trace gases: boundary layer (labeled as "BL", biomass burning ("BB", free troposphere (continental, "FTCO" and marine, "FTMA", and Tula industrial complex ("TIC". In general, NO2/NO ratios in different air masses are near photostationary state. Analysis of this ratio can be useful for testing current understanding of tropospheric chemistry. The ozone production efficiency (OPE for the 5 air mass categories ranged from 4.5 (TIC to 8.5 (FTMA, consistent with photochemical aging of air masses exiting the Mexico City Metropolitan Area.

THE CONTROL OF INTERNATIONAL NORMALISED RATIO IN PATIENTS WITH ATRIAL FIBRILLATION TREATED WITH WARFARIN IN OUTPATIENT AND HOSPITAL SETTINGS: DATA FROM RECVASA REGISTRIES

Directory of Open Access Journals (Sweden)

M. M. Loukianov

2018-01-01

Full Text Available Am. To study in the RECVASA registers the availability of data about the international normalized ratio (INR indicator and achievement of its target values in outpatient and hospital practice in patients with atrial fibrillation (AF receiving anticoagulant therapy with warfarin.Material and methods. Data about the INR control and the frequency of achievement of its target values at the outpatient and hospital stages were analyzed in RECVASA (Ryazan and RECVASA FP – Yaroslavl outpatient registries, as well as in the hospital registers RECVASA FP (Moscow, Kursk, Tula in 817 patients (46.9% of men, age 68.5±9.6 years with AF and the prescribed anticoagulant therapy with warfarin.Results. INR was determined in 689 (84.3% of 817 patients. The values of INR were monitored during therapy with warfarin in RECVASA (Ryazan and RECVASA FP –Yaroslavl outpatient registries in 73.7% and 77.7% of patients, respectively, and in RECVASA FP hospital registers: 95.8% (Moscow; 81.3% (Tula and 93.5% (Kursk. The target level of INR (2.0-3.0 was achieved in a minority of patients with AF during treatment with warfarin: inRyazan – in 26.3% of cases;Yaroslavl – 38.3%;Kursk – 34.8%;Moscow – 39.5%; Tule – 26.3%. Control of INR in hospital registries during warfarin therapy in patients with AF significantly more often (p<0.05 was performed at the hospital stage, compared with prehospital (in Kursk –2.3 times more often in Moscow – 2.6 times, in Tula – in 1,8 times. The target level of INR in the hospital was achieved significantly more often (p<0.05 than before hospitalization (Moscow andKursk, but no significant differences were found in the RECVASA FP –Tula register (p=0.08. The INR was monitored by 94.9% of the patients; however, the target values of this indicator were achieved only in 33% of cases in the sample study in the RECVASA FP –Moscow registry according to a survey of 39 patients with AF who continued to receive warfarin after 2.6±0

Assesment of trace elements and organic pollutants from a marine oil complex into the coral reef system of Cayo Arcas, Mexico.

Science.gov (United States)

Cram, Silke; Ponce De León, Claudia A; Fernández, Pilar; Sommer, Irene; Rivas, Hilda; Morales, Luis Miguel

2006-10-01

Possible contaminants produced by the Petroleos Mexicanos (PEMEX) marine oil complex in the vicinity of the Cayo Arcas (Mexico) coral reef ecosystem were evaluated by analyzing sediments and sea water for hydrocarbons and metal elements. We found that the concentrations of aliphatic hydrocarbons in the sea water were generally low, with the highest values detected near the oil station; the concentration of polycyclic aromatic hydrocarbons (PAHs) was generally below the detection limit. The hydrocarbons found in the sediments seem to have a pyrogenic origin, and were probably produced by marine traffic in the study area. The total PAH concentration did not exceed the NOAA criteria, although levels of some individual PAHs did. The only metal detected in the sea water at high concentrations was nickel. The Ni/V ratio in the sediments indicates the contribution of crude oil to the system. The high content of Ni and Zn was attributed to the ballast waters from the oil tankers that load at the station's monobuoys. The presence of fine sediments that commonly originate from terrestrial ecosystems supported this assumption.

Mexico: 'oil mentality' at last accepts a role for gas

International Nuclear Information System (INIS)

Higgs, R.

1992-01-01

The history of Mexico's policy of concentrating on oil and treating natural gas as a nuisance is traced. The current redefinition of natural gas policies by PEMEX, Mexico's giant oil and gas state monopoly, and the expanding petrochemical industry are discussed. Proven reserves of natural gas, imports of gas from the US, and the growing demand for gas products are considered. (UK)

Book of abstracts of the VIII scientific and technical conference Young people in science; Sbornik annotatsij dokladov Vos'moj nauchno-tekhnicheskoj konferentsii Molodezh' v nauke

Energy Technology Data Exchange (ETDEWEB)

NONE

2009-07-01

The book includes abstracts of reports made young scientists and specialists from FGOU RFYaTs-VNIIEhF (Sarov), FGOU RFYaTs-VNIITF (Snezhinsk), VNIIA (Moscow), FGOU NIIIT (Moscow), FGOU FNPTs NIIIS (Nizhnij Novgorod), OKBM (Nizhnij Novgorod), VNIINM (Moscow), TulGU (Tula). At the conference, young scientists presented reports on the following topics: Theoretical and mathematical physics; Experimental physics; Engineering; Information systems and technologies; Industrial, radiation and ecological safety

Motivation of Professional Choice as a Component of Professional Subjectness in Teachers

OpenAIRE

Budnikova S.P.,

2017-01-01

The paper addresses the issue of factors that define the choice of university and future profession in prospective students of the Tula State Lev Tolstoy Pedagogical University. The motives of professional choice are essential when it comes to analyzing the conditions of development of professional subjectness. Our study involved 62% of all first-year students and 85% of first-year students of pedagogical departments. We used our specially developed questionnaire “Motives of University Choice...

Possible sources for hydrogen production in Mexico; Posibles fuentes de produccion de hidrogeno en Mexico

Energy Technology Data Exchange (ETDEWEB)

Vazquez Esparza Mata, Esther; Perez Garcia, Edgar C. [Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

2004-06-15

In agreement with the Secretaria de Energia, Mexico consumed daily in year 2000, 1.7 millions of oil barrels and according to numbers of PEMEX the proven reserves to December 31 of that year, ascended to 12,312 million barrels, obviously the consumption and the reserves will change through the time, but making a calculation these reserves will be sufficient only for 20 years, on the other hand according to PEMEX Gas y Petroquimica Basica numbers, the present natural gas reserves are sufficient to supply the demand during 22 years, with these data we can have an approximate calculation of 20 years of fossil fuel supply, to this stage we can name it the period of power transition, when this time interval is over we will have an eminent power crisis and it will be necessary to count already on new power alternatives, which have a sustainable development and which will have to be ready at by the end of the next 20 years. One of the most viable alternatives is obtaining energy from hydrogen, this is the most abundant element in the universe, near 75% is constituted by it, but it is not found in pure state in nature. In order to determine certain state it is necessary to investigate about the processes for the hydrogen obtaining, the reforming of natural gas, the natural gas reserves, the natural gas distribution and the integrated gasification. [Spanish] De acuerdo con la Secretaria de Energia, Mexico consumio en el ano 2000, 1.7 millones de barriles diarios de petroleo y segun cifras de PEMEX las reservas probadas al 31 de diciembre de ese ano ascienden a 12,312 millones de barriles, obviamente el consumo y las reservas cambiaran a traves del tiempo, pero haciendo un calculo estas reservas seran suficientes unicamente para 20 anos, por otro lado segun cifras de PEMEX Gas y Petroquimica basica las reservas de gas natural actuales son suficientes para abastecer la demanda durante 22 anos, con estos datos podemos tener un calculo aproximado de 20 anos de abastecimiento de

Latin America Report.

Science.gov (United States)

1986-11-17

yesterday, the reserved market throughout the country for in- formatics has also been extended to computer software programs. The DIARIO OFICIAL ...Pemex Northern States Price Cuts 97 PARAGUAY Journalists Union Denounces Arrest of Members (EL DIARIO , 25 Oct 86) .....; .. 98 Police...topple the elected government in Man- • agua — including US$200 000 to the anti-San- dinista "Friends of the Democratic Centre in Central America". I

Unique Structural Modifications Are Present in the Lipopolysaccharide from Colistin-Resistant Strains of Acinetobacter baumannii

Science.gov (United States)

2013-10-01

Selected reaction monitoring (SRM) studies were performed on a Thermo TSQ Quantum Ultra Triple Stage quadrupole mass spectrometer. The scans of the...well as a PmrC-dependent pEtN addition to the lipid A of E. coli O157:H7 (39). Surprisingly, the canine pathogen Capnocytophaga canimorsus and plant...variety of novel lipid A structures obtained from Francisella tula- rensis live vaccine strain. Innate Immun. 18:268 –278. 44. Balaji V, Jeremiah SS

PGPB's pipeline integrity management system

Energy Technology Data Exchange (ETDEWEB)

Urencio, Claudio; Sanchez, Luis; Moreno, Carlos [PGPB - Pemex Gas y Petroquimica Basica (Mexico)

2005-07-01

Pemex Gas has 12,134 km of natural gas transmission pipelines, 1,835 Km for LPG and 1,216 Km for basic petrochemicals. The must part of this infrastructure was built in the 70's and reaching their 35 years of operating life. To manage the integrity of the three systems, Pemex Gas has a portfolio of technological tools. This tools allow the Company to improves the decision taking, align the budget with their strategic goals, achieve efficient asset utilization, and increase the value generation. The process of integrity management starts with the risk evaluation on assets, with the use of a software called IAP (Integrity Assessment Program). This information is integrated to the SIIA (Assets Identification System). The results of both software are used to the construction of the Risk Atlas, which identifies graphically each pipeline segment, with their related risk and factors that influence their behavior. The Risk Atlas gives us information about the consequences to the people, environment and facilities, so we can design customized plans to prevent or mitigate emergencies. Finally a detailed analysis of the resulting information and scenarios simulations help us to determine the best investment projects that will minimize the risk through all our assets. (author)

Pigging the unpiggable: a total integrated maintenance approach of the Progreso Process Pipelines in Yucatan, Mexico

Energy Technology Data Exchange (ETDEWEB)

Sanchez Graciano, Luis [PEMEX Refinacion, Mexico, MX (Mexico); Gonzalez, Oscar L. [NDT Systems and Services, Stutensee (Germany)

2009-07-01

Pemex Refinacion and NDT Systems and Services, executed a Total Integrated Maintenance Program of the Process Pipeline System in the Yucatan Peninsula in Mexico, in order to modernize, enhance and bring the pipeline system up to the best industry standards and ensure the integrity, reliability and safe operation of the system. This approach consisted in using multi-diameter ultrasonic inspection technology to determine the current status of the pipelines, repair every 'integrity diminishing' feature present on the system and establish a Certified Maintenance Program to ensure the future reliability and safety of the pipelines. Due to the complex nature of the pipeline construction, dated from 1984, several special modifications, integrations and solutions were necessary to improve the in line inspection survey as for all traditionally unpiggable systems. The Progreso Pipeline System consists in 3 major pipelines which transport diesel, jet fuel and gasoline respectively. The outside diameter of two pipelines varies along its length between 12 inches - 14 inches - 16 inches, making the inspection survey more difficult and particularly demanding an Inspection Tool solution. It is located on the coast of the Yucatan Peninsula, at the Mexican Caribbean, and its main purpose is to transport the product from the docked tanker ships to the Pemex Storage and Distribution Terminal. (author)

The Mexican Oil Industry: Governance, Resource and Social Concerns

Science.gov (United States)

2011-10-28

production, refining, etc. 10 That same year, Petroleos Mexicanos, or Pemex, the state owned oil company was created. 11 In 1940, a constitutional...http://www.oecd.org/dataoecd/23/28/43371045.pdf 6. 67 Paul Segal, “The Future of Mexico, El petroleo es nuestro: The Distribution of Oil Reserves in...El petroleo es nuestro: The Distribution of Oil Reserves in Mexico. Houston: James A. Baker III Institute for Public Policy, Rice University, 2011

Tillandsia usneoides L, a biomonitor in the determination of Ce, La and Sm by neutron activation analysis in an industrial corridor in Central Mexico

International Nuclear Information System (INIS)

Isaac-Olivé, K.; Solís, C.; Martínez-Carrillo, M.A; Andrade, E.; López, C.; Longoria, L.C.; Lucho-Constantino, C.A.; Beltrán-Hernández, R.I.

2012-01-01

The atmosphere of the Tula Industrial Corridor in Central Mexico is contaminated due to several industries including oil refining while station monitoring in this area are limited. Lanthanides are considered fingerprint of oil refinery activities, and La, Ce and Sm have been previously detected in this area using filters. The suitability of T. usneoides as a biomonitor assessing the La, Ce and Sm concentrations in Particulate Matter is evaluated by NAA. Results of both biomonitor and filters are highly correlated.

Tillandsia usneoides L, a biomonitor in the determination of Ce, La and Sm by neutron activation analysis in an industrial corridor in Central Mexico

Energy Technology Data Exchange (ETDEWEB)

Isaac-Olive, K. [Facultad de Medicina. Universidad Autonoma del Estado de Mexico, Paseo Tollocan s/n, esq. Jesus Carranza, Toluca, 50120 Estado de Mexico (Mexico); Solis, C., E-mail: corina@fisica.unam.mx [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, 04510 Mexico DF (Mexico); Martinez-Carrillo, M.A; Andrade, E. [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, 04510 Mexico DF (Mexico); Lopez, C.; Longoria, L.C. [Instituto Nacional de Investigaciones Nucleares (ININ), Salazar, 50045 Estado de Mexico (Mexico); Lucho-Constantino, C.A. [Universidad Politecnica de Pachuca, Carretera Pachuca-Cd. Sahagun, Km. 20., Hidalgo, Mexico (Mexico); Beltran-Hernandez, R.I. [Centro de Investigaciones Quimicas, Universidad Autonoma del Estado de Hidalgo. Carretera Pachuca-Tulancingo km. 4.5, 42184, Pachuca, Hidalgo (Mexico)

2012-04-15

The atmosphere of the Tula Industrial Corridor in Central Mexico is contaminated due to several industries including oil refining while station monitoring in this area are limited. Lanthanides are considered fingerprint of oil refinery activities, and La, Ce and Sm have been previously detected in this area using filters. The suitability of T. usneoides as a biomonitor assessing the La, Ce and Sm concentrations in Particulate Matter is evaluated by NAA. Results of both biomonitor and filters are highly correlated.

Derechos de propiedad e industria petrolera mexicana

Directory of Open Access Journals (Sweden)

Rosío Vargas

2013-01-01

Full Text Available De un control de los recursos mineros a fines del siglo antepasado, por parte de las corporaciones internaciona- les, la industria petrolera mexicana transitó a un régimen de soberanía nacional y propiedad pública del petróleo después de 1938 que le permitió el diseño de una política económica con vocación nacional asignando varias tareas a PEMEX. La adopción del modelo neoliberal en los ochenta, como fundamento de la estrategia macroeco- nómica, fue el punto de retorno al control privado de la industria y la empresa petrolera. Con la puesta en opera- ción del modelo neoliberal se desmantela la integración vertical lograda años atrás, se obliga a PEMEX a endeu- darse para poder realizar sus inversiones, y se confiscan los recursos fiscales de la empresa. Bajo el argumento de que es preferible exportar más ahí donde es viable multiplicar los aportes a la balanza de pagos e importar pro- ductos que la competencia internacional ha abaratado, no sólo se regresa a un modelo especializado en la pro- ducción de una materia prima en detrimento de los sectores industriales, sino que se renuncia a la autosuficiencia energética llevando al país a una peligrosa dependencia estratégica de derivados del petróleo. Bajo la dinámica de la integración en América del Norte liderada por los Estados Unidos, se logra la apertura total en los sectores corriente arriba de la empresa petrolera mexicana. El regreso a la propiedad privada es visible a partir de los contratos negociados en la reforma energética de 2008, y la desincorporación de actividades sustantivas de la industria que constituyen prerrogativas constitucionales, la empresa se encamina bajo una dinámica de gobernanza corporativa a la conformación legal de una corporación privada por lo que un cambio mayor surge con la ruptura del binomio Estado- PEMEX.

Deep water invasions in oil fields of the gulf of Mexico: a challenge for the application of environmental isotopes; Invasiones de aguas profundas en yacimientos petroleros del golfo de Mexico: un reto para la aplicacion de isotopos ambientales

Energy Technology Data Exchange (ETDEWEB)

Birkle, Peter [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2001-07-01

It was verified the use of environmental isotopes as a useful method to improve the efficiency of the present exploitation in oil fields of the Gulf of Mexico. In general, the stable isotopes like deuterium, 18 O, 13 C, 37 Cl, 87 Sr and 34 S, support in questions on the origin of waters, its quality, the geochemistry evolution, recharge processes, interaction water-rock, origin of the salinity and contamination processes, whereas the radioactive isotopes (Tritium, 14 C, 36 I and 129 I) provide information on the time of circulation, the origin and the age of underground waters. Since year 1998, the Gerencia de Geotermia of the Instituto de Investigaciones Electricas is making investigation projects in the oil fields of the Actives of Production Luna, Pol-Chuc, Chilpilla-Colomo (all of them in the state of Tabasco) and Cactus-Sitio Grande (Chiapas) in the South Region of PEMEX Exploration and Production (PEP). As primary target of these studies hidrogeological models were developed on the migration and circulation of the fluids in the oil fields with the purpose of limiting the water invasion in producing wells and to increase the crude oil production. [Spanish] Se comprobo el uso de los isotopos ambientales como un metodo util para mejorar la eficiencia de la explotacion actual en yacimientos petroleros del golfo de Mexico. En general, los isotopos estables como deuterio, 18 O, 13 C, 37 Cl, 87 Sr y 34 S, apoyan en cuestiones sobre el origen de las aguas, su calidad, la evolucion geoquimica, procesos de recarga, interaccion agua-roca, origen de la salinidad y procesos de contaminacion, mientras que los isotopos radiactivos (Tritio, 14 C, 36 l Y 129 I) proporcionan informacion sobre el tiempo de circulacion, el origen y la edad de las aguas subterraneas. Desde el ano 1998, la Gerencia de Geotermia del Instituto de Investigaciones Electricas esta realizando proyectos de investigacion en los campos petroleros de los activos de Produccion Luna, Pol-Chuc, Chilpilla

Uramex will have similar importance like that of Pemex

International Nuclear Information System (INIS)

Graef F, C.

1980-01-01

The activities of Uramex are presented, sole agency in the prospection, extraction and production of uranium and exclusively responsible for the elaboration of the nuclear fuels used in Mexico. Within the framework of the various stages of the nuclear fuel cycle, a projection of long, intermediate and short term objectives with which to meet needs of supply in the future is also presented. (author)

Measuring program of the Federal Republic of Germany

International Nuclear Information System (INIS)

Heinemann, K.

1991-10-01

Form May 21 to June 11 1991 seven measuring vans from the Federal Republic of Germany conducted investigations of radioactivity of environmental samples in the Russian Federation. The measurements were concentrated in the areas of Tula, Kaluga and Brjansk, which were contaminated with different concentrations by the Chernobyl accident. These investigations were financed by the 'Bundesministerium fuer Umwelt, Naturschutz und Reaktorsicherheit' and aimed at the information of the population. In this report, the measuring campaign is described and the results are presented. (orig.) [de

Information system of industrial security and environmental protection (SISPA) of PEMEX; Sistema de informacion de seguridad industrial y proteccion ambiental (SISPA) de PEMEX

Energy Technology Data Exchange (ETDEWEB)

Carrisoza B, Vicente; Bernal M, Hector M [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Cortazar F, Segio [Petroleos Mexicanos (Mexico)

2002-07-01

The Management of Supervision of Processes (GSP) in collaboration with the Management of Control and Instrumentation (GCI) of the Instituto de Investigaciones Electricas (IIE), has developed a system able to respond in a opportune and coordinated way to the attention and handling of emergencies, optimization of the number of reports and its content, reduction of the time in which the reports of industrial security and environmental protection arrive at their destiny, diminution of the manual process in the elaboration of reports and information and, finally, able to automatically calculate the associated performance indicators related to the efficiency of actions in each one the involved areas. [Spanish] La Gerencia de Supervision de Procesos (GSP) en colaboracion con la Gerencia de Control e Instrumentacion (GCI) del Instituto de Investigaciones Electricas (IIE), ha desarrollado un sistema capaz de responder de manera oportuna y coordinada a la atencion y manejo de emergencias, optimizacion del numero de reportes y su contenido, reduccion del tiempo en que los reportes de seguridad industrial y proteccion ambiental llegan a su destino, disminucion del proceso manual en la elaboracion de reportes e informes y, finalmente, capaz de calcular automaticamente los indicadores de desempeno asociados a la eficiencia de las acciones en cada una las areas involucradas.

Generalized Superconductivity. Generalized Levitation

International Nuclear Information System (INIS)

Ciobanu, B.; Agop, M.

2004-01-01

In the recent papers, the gravitational superconductivity is described. We introduce the concept of generalized superconductivity observing that any nongeodesic motion and, in particular, the motion in an electromagnetic field, can be transformed in a geodesic motion by a suitable choice of the connection. In the present paper, the gravitoelectromagnetic London equations have been obtained from the generalized Helmholtz vortex theorem using the generalized local equivalence principle. In this context, the gravitoelectromagnetic Meissner effect and, implicitly, the gravitoelectromagnetic levitation are given. (authors)

On the problem of social-psychological state of children in contaminated zones

International Nuclear Information System (INIS)

Linge, I.I.; Tarasov, V.I.; Klement'eva, A.Ya.; Barklyanskij, Yh.A.

1993-01-01

The paper presents the results of investigation into clash situation characteristic of senior pupils (9-11-th classes) living at the radioactive contamination areas and in clean areas located in 5 regions of Russia: the Bryansk, the Kaluga, the Orel, the Smolensk and the Tula regions. The data analysis enabled to separate three special groups among children in eight-dimension characteristic space of the clash situation: 1 guilt; 2 loyal; 3 conflict ones. The resident area is shown to have insignificant discriminant feature at description of the indicated groups

SELECTION OF A METHOD TO PRODUCE ACTIVATED CHARCOAL USING FOUR FOREST SPECIES

OpenAIRE

Herrera Builes, Jhon Fredy; Morales Yepes, Wilmar Alexander; Pérez Schile, Juan David

2004-01-01

La presente investigación se realizó en los laboratorios de Carbones y de Productos Forestales, de la Universidad Nacional de Colombia, Sede Medellín. Ésta se orientó hacia la selección de un método para obtener carbón activado a partir de las especies forestales pino pátula (Pinus patula), chingalé (Jacaranda copaia), pino tecunumani (Pinus tecunumanii) y roble (Quercus humboldtii). Cada una de las maderas se caracterizó, determinando sus propiedades físicas de densidades y contracciones. Se...

Tillandsia usneoides L, a biomonitor in the determination of Ce, La and Sm by neutron activation analysis in an industrial corridor in Central Mexico.

Science.gov (United States)

Isaac-Olivé, K; Solís, C; Martínez-Carrillo, M A; Andrade, E; López, C; Longoria, L C; Lucho-Constantino, C A; Beltrán-Hernández, R I

2012-04-01

The atmosphere of the Tula Industrial Corridor in Central Mexico is contaminated due to several industries including oil refining while station monitoring in this area are limited. Lanthanides are considered fingerprint of oil refinery activities, and La, Ce and Sm have been previously detected in this area using filters. The suitability of T. usneoides as a biomonitor assessing the La, Ce and Sm concentrations in Particulate Matter is evaluated by NAA. Results of both biomonitor and filters are highly correlated. Copyright © 2012 Elsevier Ltd. All rights reserved.

Capacidad condrogénica de injertos libres de periostio en la reparación de defectos del cartílago articular: estudio experimental en conejos

OpenAIRE

Pérez Tinao, M.; Carranza Bencano, Andrés; Armas Padrón, J. R.

1996-01-01

Ante la incapacidad de reparación de las lesiones del cartílago articular, hemos diseñado un modelo experimental, consistente en la realización de una úlcera condral de 8 mm, en la superficie articular de la rótula, en 48 conejos distribuidos en 2 series. Mientras en la serie control (24 conejos) dicha úlcera se dejó a evolución espontánea, en la experimental (24 conejos) fue cubierta con plastia libre de periostio tibial para poder investigar la posibilidad de regeneración del...

Kinesio taping & Síndrome femoro-patelar: una revisión sistemática

OpenAIRE

López-Aguilar, Beatriz; Merino-Marban, Rafael

2014-01-01

INTRODUCCIÓN: El síndrome femoro-patelar (SFP), también conocido como condromalacia rotuliana, aparece cuando existe una degeneración del cartílago rotuliano entre las superficies óseas del fémur y de la rótula. Su sintomatología característica es un dolor anterior de la rodilla que se agudiza al mover dicha articulación. OBJETIVOS: Actualizar los datos sobre la efectividad del Kinesiotaping (KT) en el tratamiento del SFP y aportar posibles pautas de aplicación del KT en el SFP. PALABR...

National oil companies' presence to hike US refining competition

International Nuclear Information System (INIS)

Anon.

1992-01-01

This paper reports that the downstream segment of the U.S. petroleum business is virtually certain to become more competitive because of the growing presence of national oil companies in the country's refining industry. That's a forecast by New York investment firm Kidder Peabody. It cites a plan by Mexico's Petroleos Mexicanos (Pemex) to form a joint venture with Shell Oil Co. covering Shell's 225,000 b/d Deer Park, Tex., refinery as the latest example of national oil companies' movement into U.S. refining

[Immunogenicity and safety of the influenza vaccine, in a population older than 55-years in Mexico].

Science.gov (United States)

Ayala-Montiel, Octavio; Mascareñas, César; García-Hernández, Delfino; Rendón-Muñiz, Jorge; López, Irma; Felipe Montaño, Luis; Zenteno, I; Franco-Paredes, C

2005-01-01

To confirm the immunogenicity and tolerance of the inactivated, fractionated, and purified influenza vaccine, in a Mexican adult population aged 55 and older, medically served at a Petróleos Mexicanos Hospital (Pemex, Mexican Oil Company). The study was conducted between November and December, 2000, among ninety adult subjects aged 55 years and older who were seen at the Hospital Central Sur Pemex. The primary endpoints regarding immunogenicity were the percentage of individuals with protective antibodies targeting hemagglutinins higher than or equal to 1:40, and the percentage of subjects who seroconverted as measured by a four-fold increase in protective antibody production. Secondary endpoints included the frequency of local and systemic reactions to the vaccine. An additional criterion that was evaluated included antigen-antibody affinity assays to measure the polyclonal antibody response to the vaccine and the specific generation of high-affinity antibodies to viral proteins, before and after vaccination. The antibody protection rate was 95.6% against the HINI strain, 98.9% against the H3N2 strain, and a 100% against the B/Yamanashi strain. Seroconversion to the HINI strain was elicited in 74.4% of subjects, to the H3N2 strain in 88.9%, and to the B/Yamanashi strain in 82.2%. Eighteen (20%) subjects developed local reactions; 17 (18.8%) developed a systemic reaction post vaccination at day 5 and nine subjects (10%) at day 28. Local reactions consisted of pain in 10 (11.1%) subjects, redness in 8 (8.8%), and induration in 6 (6.6%). General malaise, headache, and fever were identified in 10, 8.8, and 0% of subjects, respectively, at day 5, and in 4.4, 6.6, and 0%, respectively, at day 28. Influenza vaccine was highly immunogenic in a healthy Mexican adult population aged 55 years and older. The generation of high-affinity antibodies to the virus after vaccination was also demonstrated. Local and systemic adverse reactions to the vaccine identified in our study

General general game AI

OpenAIRE

Togelius, Julian; Yannakakis, Georgios N.; 2016 IEEE Conference on Computational Intelligence and Games (CIG)

2016-01-01

Arguably the grand goal of artificial intelligence research is to produce machines with general intelligence: the capacity to solve multiple problems, not just one. Artificial intelligence (AI) has investigated the general intelligence capacity of machines within the domain of games more than any other domain given the ideal properties of games for that purpose: controlled yet interesting and computationally hard problems. This line of research, however, has so far focuse...

Evaluation of the national cogeneration potential as an option for the expansion of the national electric system; Evaluacion del potencial nacional de cogeneracion como opcion en la expansion del sistema electrico nacional

Energy Technology Data Exchange (ETDEWEB)

Nieva Gomez, Rolando; Hernandez Galicia, Julio Alberto [Instituto de Investigaciones Electricas, Cuernavaca (Mexico); Portes Mascorro, Enrique; Alvarez Chavez, Jose Maria [Comision Nacional para el Ahorro de Energia (CONAE), Mexico, D. F. (Mexico)

1997-12-31

The Comision Nacional para el Ahorro de Energia (CONAE) carried out a study to determine the amount of electric energy available by cogeneration in the industrial sector of our country. This study is based in a survey among the enterprises with the largest fuel consumption belonging to the industrial and commercial sectors and to the petrochemical branch of Petroleos Mexicanos (PEMEX). The results of the study are presented, which show the location of the cogeneration potential by the following estimates: a) The scenario under a potential of 5770 MW to generate annually 4.55 x 107 MWh of electric energy. b) The scenario with a potential of 10819 MW to generate annually 9.47 x 107 Mwh of electric energy [Espanol] La Comision Nacional para el Ahorro de Energia (CONAE) llevo acabo un estudio para determinar la cantidad de energia electrica disponible por cogeneracion en el sector industrial de nuestro pais. El estudio se fundamenta en una encuesta entre las empresas con mayor consumo de combustibles pertenecientes a los sectores industrial y comercial y al ramo petroquimico de Petroleos Mexicanos (PEMEX). Se presentan los resultados del estudio, el cual muestra la ubicacion del potencial de cogeneracion por los siguientes estimados: a) El escenario bajo con un potencial de 5770 MW para producir anualmente 4.55 x 107 Mwh de energia electrica. b) El escenario alto con un potencial de 10819 MW para producir anualmente 9.47 x 107 MWh de energia electrica

Evaluation of the national cogeneration potential as an option for the expansion of the national electric system; Evaluacion del potencial nacional de cogeneracion como opcion en la expansion del sistema electrico nacional

Energy Technology Data Exchange (ETDEWEB)

Nieva Gomez, Rolando; Hernandez Galicia, Julio Alberto [Instituto de Investigaciones Electricas, Cuernavaca (Mexico); Portes Mascorro, Enrique; Alvarez Chavez, Jose Maria [Comision Nacional para el Ahorro de Energia (CONAE), Mexico, D. F. (Mexico)

1998-12-31

The Comision Nacional para el Ahorro de Energia (CONAE) carried out a study to determine the amount of electric energy available by cogeneration in the industrial sector of our country. This study is based in a survey among the enterprises with the largest fuel consumption belonging to the industrial and commercial sectors and to the petrochemical branch of Petroleos Mexicanos (PEMEX). The results of the study are presented, which show the location of the cogeneration potential by the following estimates: a) The scenario under a potential of 5770 MW to generate annually 4.55 x 107 MWh of electric energy. b) The scenario with a potential of 10819 MW to generate annually 9.47 x 107 Mwh of electric energy [Espanol] La Comision Nacional para el Ahorro de Energia (CONAE) llevo acabo un estudio para determinar la cantidad de energia electrica disponible por cogeneracion en el sector industrial de nuestro pais. El estudio se fundamenta en una encuesta entre las empresas con mayor consumo de combustibles pertenecientes a los sectores industrial y comercial y al ramo petroquimico de Petroleos Mexicanos (PEMEX). Se presentan los resultados del estudio, el cual muestra la ubicacion del potencial de cogeneracion por los siguientes estimados: a) El escenario bajo con un potencial de 5770 MW para producir anualmente 4.55 x 107 Mwh de energia electrica. b) El escenario alto con un potencial de 10819 MW para producir anualmente 9.47 x 107 MWh de energia electrica

Yucatán subsurface stratigraphy: Implications and constraints for the Chicxulub impact

Science.gov (United States)

Ward, W. C.; Keller, G.; Stinnesbeck, W.; Adatte, T.

1995-10-01

Much of the discussion about the effects of an end-of-Cretaceous impact by a large extraterrestrial body in northwestern Yucatán has been done in the context of limited and partly erroneous published data on the Mesozoic stratigraphy of that area. Reexamination of cores and geophysical logs taken in several Pemex wells has produced improved lithologic and biostratigraphic correlation of the Jurassic to Maastrichtian section across the northern Yucatán peninsula. These data suggest that major disturbance of strata by an impact would have been confined to within about 100 km of the proposed impact center near Chicxulub. The only unusual lithologic unit is polymict breccia, which apparently was penetrated at or near the top of the Cretaceous section in all the deep wells of northern Yucatán. This breccia in Pemex wells Yucatán 1, 2, 4, 5A, and 6 is composed predominantly of detrital dolomite, limestone, and anhydrite clasts set in dolomitized carbonate mud matrix, which contains upper Maastrichtian foraminifers. These constituents, mixed with fragments of altered glass or melt rock, shocked quartz and feldspar, and basement rock, suggest an impact as the most likely origin for the breccia. The timing of brecciation is poorly constrained by biostratigraphic data. There is some evidence, however, that the breccia unit is overlain by about 18 m of uppermost Maastrichtian marls, suggesting an impact before the Cretaceous-Tertiary boundary. In addition, there may have been more than one episode of breccia deposition.

Generalized functions

CERN Document Server

Gelfand, I M; Graev, M I; Vilenkin, N Y; Pyatetskii-Shapiro, I I

Volume 1 is devoted to basics of the theory of generalized functions. The first chapter contains main definitions and most important properties of generalized functions as functional on the space of smooth functions with compact support. The second chapter talks about the Fourier transform of generalized functions. In Chapter 3, definitions and properties of some important classes of generalized functions are discussed; in particular, generalized functions supported on submanifolds of lower dimension, generalized functions associated with quadratic forms, and homogeneous generalized functions are studied in detail. Many simple basic examples make this book an excellent place for a novice to get acquainted with the theory of generalized functions. A long appendix presents basics of generalized functions of complex variables.

Estudio de la asimetría rotuliana como marcador de riesgo del dolor femoro-patelar. Análisis de elementos finitos de la sentadilla

OpenAIRE

Arnal Burró, Juan

2017-01-01

El dolor de origen femoro-patelar (FP) es una de las causas mas frecuentes de dolor en la rodilla, predomina en mujeres adolescentes y adultos jóvenes, aunque globalmente es una de las patologías de mayor prevalencia en las consultas de cirugía ortopédica en todos los rangos etarios. Este dolor tiene su mecanismo fisiopatológico en el aumento de la presión y tensión (estrés) experimentados por la rótula. Existe además una asociación entre el dolor anterior de rodilla (dolor FP) y la artrosis ...

Iodine deficiency disorders (IDD) in regions of Russia affected by Chernobyl

International Nuclear Information System (INIS)

Gerasimov, G.; Alexandrova, G.; Arbuzova, M.

1996-01-01

The present article provides an update on IDD in the Western regions of Russia (Bryansk, Kaluga, Tula and Orel) which were contaminated by radioactive fallout after the Chernobyl accident in 1986. These surveyed areas meet the criteria of ICCIDD/UNICEF/WHO for mild and moderate IDD. Higher iodine excretion and smaller goiter prevalence (mild level of IDD) were more typical for urban sites, while lower iodine levels and higher goiter endemicity (moderate level of IDD) were found in rural areas. IDD control programmes should be developed and implemented in Chernobyl areas and iodine excretion should be monitored continuously to minimize future thyroid abnormalities

Dicty_cDB: VSA784 [Dicty_cDB

Lifescience Database Archive (English)

Full Text Available tula EST MtBC39A08F1 : T3 end of clone MtBC39A08 of cDNA library MtBC from arbuscular mycorrhiza of cultivar...C10B03F1 : T3 end of clone MtBC10B03 of cDNA library MtBC from arbuscular mycorrh... cDNA library MtBC from arbuscular mycorrhiza of cultivar Jemalong of Medicago truncatula (barrel medic). 62...13 |AL382813.1 Medicago truncatula EST MtBC10B03R1 : T7 end of clone MtBC10B03 of

Strategic evolution of petroleum agents in Latin America

International Nuclear Information System (INIS)

Freire, Alexandre de Figueiredo

1999-01-01

This paper analyses the strategies of the Latin-American agents PDVSA, PEMEX, YPF and Ecopetrol face to the double transformation: global re-structuration and deregulation of the national industries. The study focuses the traditional sectors of the petroleum industries (core business), including the petrochemical industries and new segments such as natural gas and electric power. The paper analyses the period 1992-1996, which is characterized by price instability, liberalization of the Latin-American markets and in the corporation-enterprise plane by successive mergings and acquisitions modifying the actors strategic behaviour

Monitoreo de la protección catódica a línea submarina No. 161 de 36"ø Rebombeo/Dos Bocas de la Región Marina Suroeste en la sonda de Campeche

OpenAIRE

Hernández Márquez, Joaquín Salvador

2002-01-01

Uno de los retos que existen en la actualidad dentro del ámbito de Pemex Exploración y Producción es la construcción de líneas submarinas dentro de la Sonda de Campeche en el Golfo de México, para el transporte de los hidrocarburos desde ese sitio hasta las instalaciones de Almacenamiento y Bombeo a los diferentes puntos de la Republica Mexicana. Así mismo, el mayor problema que se cuenta es cuando una vez hecha la construcción del ducto submarino que se debe de hacer pa...

Motivation of Professional Choice as a Component of Professional Subjectness in Teachers

Directory of Open Access Journals (Sweden)

Budnikova S.P.,

2017-11-01

Full Text Available The paper addresses the issue of factors that define the choice of university and future profession in prospective students of the Tula State Lev Tolstoy Pedagogical University. The motives of professional choice are essential when it comes to analyzing the conditions of development of professional subjectness. Our study involved 62% of all first-year students and 85% of first-year students of pedagogical departments. We used our specially developed questionnaire “Motives of University Choice” and a set of others, such as V.G. Katashev’s “Technique for Measuring Learning Motivation in Students” and K. Zamfir’s “Work Motivation Technique” (modified by A.A. Rean. The outcomes show that most students make choices basing on their emotional attitude to the professional sphere which is generally positive. Also, it was revealed that important inner and outer positive motives prevail in most future teachers. The paper states that it is necessary to find the universal criteria which could help predict successful self-actualisation in profession in individuals during their study at university and thus help reveal the mechanisms for managing this process. Finally, we suggest some possible forms promoting professional self-orientation at university.

The General Factor of Personality: A General Critique.

Science.gov (United States)

Revelle, William; Wilt, Joshua

2013-10-01

Recently, it has been proposed that all non-cognitive measures of personality share a general factor of personality. A problem with many of these studies is a lack of clarity in defining a general factor. In this paper we address the multiple ways in which a general factor has been identified and argue that many of these approaches find factors that are not in fact general. Through the use of artificial examples, we show that a general factor is not: The first factor or component of a correlation or covariance matrix.The first factor resulting from a bifactor rotation or biquartimin transformationNecessarily the result of a confirmatory factor analysis forcing a bifactor solution We consider how the definition of what constitutes a general factor can lead to confusion, and we will demonstrate alternative ways of estimating the general factor saturation that are more appropriate.

The General Factor of Personality: A General Critique

OpenAIRE

Revelle, William; Wilt, Joshua

2013-01-01

Recently, it has been proposed that all non-cognitive measures of personality share a general factor of personality. A problem with many of these studies is a lack of clarity in defining a general factor. In this paper we address the multiple ways in which a general factor has been identified and argue that many of these approaches find factors that are not in fact general. Through the use of artificial examples, we show that a general factor is not: The first factor or component of a correla...

On a Generalized Hankel Type Convolution of Generalized Functions

Indian Academy of Sciences (India)

Generalized Hankel type transformation; Parserval relation; generalized ... The classical generalized Hankel type convolution are defined and extended to a class of generalized functions. ... Proceedings – Mathematical Sciences | News.

A North Sea approach for Mexico?; El marco Mar del Norte para Mexico?

Energy Technology Data Exchange (ETDEWEB)

Baker, George [ENERGIA.com, United States (United States)

2006-11-15

The probable existence of oil and gas deposits in the border territory between Mexico and the United States has waked up an enormous restlessness given the lack of agreements and stipulations on the handling of such deposits; cases like this one have occurred in other parts of the globe and it is indeed the intention of this article to show how the agreement decided on the North Sea can be applied in the case of Mexico. The bilateral characteristics of this agreement conformed by incentives and openings to the market, require the cooperation of different offices and governmental sectors from the federal government to make a series of possible stipulations that regulate the treaty and allow different oil companies a substantial interaction that profits the owners on both sides of the border. In Mexico the responsibility to put in action projects of this type corresponds to the legislative power in complicity with the secretariats of Foreign Affairs and Work. The present action models and the monopoly of Petroleos Mexicanos (PEMEX) in Mexico have only managed to suspend the development of the country in this sector and to maintain the oil industry development in a mediocre and deteriorated level. The benefits of such an adjustment would extend beyond obtaining a bilateral development for the involved countries; nevertheless we remember that the government of the United States is not to the compass of the governments pro-unification of borders. In order to begin the unification of the border regions, Mexico must document the location of border wells, nevertheless even though any agreement could be reached, years would have to pass before PEMEX develops the appropriate technology to operate its part of the deposits. [Spanish] La probable existencia de yacimientos de petroleo y gas en el territorio fronterizo entre Mexico y Estados Unidos ha despertado una enorme inquietud dada la falta de acuerdos y estipulaciones sobre la manipulacion de tales yacimientos; casos como

Generalized 2-vector spaces and general linear 2-groups

OpenAIRE

Elgueta, Josep

2008-01-01

In this paper a notion of {\\it generalized 2-vector space} is introduced which includes Kapranov and Voevodsky 2-vector spaces. Various kinds of generalized 2-vector spaces are considered and examples are given. The existence of non free generalized 2-vector spaces and of generalized 2-vector spaces which are non Karoubian (hence, non abelian) categories is discussed, and it is shown how any generalized 2-vector space can be identified with a full subcategory of an (abelian) functor category ...

General dental practitioner's views on dental general anaesthesia services.

Science.gov (United States)

Threlfall, A G; King, D; Milsom, K M; Blinkhom, A S; Tickle, M

2007-06-01

Policy has recently changed on provision of dental general anaesthetic services in England. The aim of this study was to investigate general dental practitioners' views about dental general anaesthetics, the reduction in its availability and the impact on care of children with toothache. Qualitative study using semi-structured interviews and clinical case scenarios. General dental practitioners providing NHS services in the North West of England. 93 general dental practitioners were interviewed and 91 answered a clinical case scenario about the care they would provide for a 7-year-old child with multiple decayed teeth presenting with toothache. Scenario responses showed variation; 8% would immediately refer for general anaesthesia, 25% would initially prescribe antibiotics, but the majority would attempt to either restore or extract the tooth causing pain. Interview responses also demonstrated variation in care, however most dentists agree general anaesthesia has a role for nervous children but only refer as a last resort. The responses indicated an increase in inequalities, and that access to services did not match population needs, leaving some children waiting in pain. Most general dental practitioners support moving dental general anaesthesia into hospitals but some believe that it has widened health inequalities and there is also a problem associated with variation in treatment provision. Additional general anaesthetic services in some areas with high levels of tooth decay are needed and evidence based guidelines about caring for children with toothache are required.

Riesgo preconcepcional y producto de la concepción

Directory of Open Access Journals (Sweden)

Lex Cervera Estrada

1997-12-01

Full Text Available Se realizó un estudio de casos y controles para determinar la influencia del riesgo preconcepcional en las características del parto y del recién nacido y determinar la evolución del desarrollo psicomotor, dentario, óseo y pondoestatural en los infantes menores de 1 año, en 35 consultorios del médico de la familia pertenecientes al Policlínico Comunitario Docente "Tula Aguilera" del Municipio de Camagüey. Los resultados más relevantes fueron que casi la cuarta parte del grupo de estudio (26,47 % presentó distocias en el parto, además fueron más frecuentes las alteraciones del desarrollo óseo y la evaluación nutricional deficiente a la captación. Un 64,70 % de los niños con evolución desfavorable al año de vida fue determinado por la desnutrición materna III-IV.A case-control study was conducted to determine the influence of the preconceptional risk on the characteristics of delivery and of the newborn, and to find out the evolution of the psychomotor, dental, bone, and pondostatural development of infants under one at 35 family physicians offices of the "Tula Aguilera" Teaching Community Polyclinc, in the municipality of Camagüey. The most important result was that one fourth of the case-base study (26.47 % presented dystocia, whereas the alterations of bone development and the deficient nutritional evaluation at the time of catchment were the most common findings. 64.70 % of children aged 1 had an unfavorable evolution due to maternal malnutririon III-IV.

Multiple infections of rodents with zoonotic pathogens in Austria.

Science.gov (United States)

Schmidt, Sabrina; Essbauer, Sandra S; Mayer-Scholl, Anne; Poppert, Sven; Schmidt-Chanasit, Jonas; Klempa, Boris; Henning, Klaus; Schares, Gereon; Groschup, Martin H; Spitzenberger, Friederike; Richter, Dania; Heckel, Gerald; Ulrich, Rainer G

2014-07-01

Rodents are important reservoirs for a large number of zoonotic pathogens. We examined the occurrence of 11 viral, bacterial, and parasitic agents in rodent populations in Austria, including three different hantaviruses, lymphocytic choriomeningitis virus, orthopox virus, Leptospira spp., Borrelia spp., Rickettsia spp., Bartonella spp., Coxiella burnetii, and Toxoplasma gondii. In 2008, 110 rodents of four species (40 Clethrionomys glareolus, 29 Apodemus flavicollis, 26 Apodemus sylvaticus, and 15 Microtus arvalis) were trapped at two rural sites in Lower Austria. Chest cavity fluid and samples of lung, spleen, kidney, liver, brain, and ear pinna skin were collected. We screened selected tissue samples for hantaviruses, lymphocytic choriomeningitis virus, orthopox viruses, Leptospira, Borrelia, Rickettsia, Bartonella spp., C. burnetii, and T. gondii by RT-PCR/PCR and detected nucleic acids of Tula hantavirus, Leptospira spp., Borrelia afzelii, Rickettsia spp., and different Bartonella species. Serological investigations were performed for hantaviruses, lymphocytic choriomeningitis virus, orthopox viruses, and Rickettsia spp. Here, Dobrava-Belgrade hantavirus-, Tula hantavirus-, lymphocytic choriomeningitis virus-, orthopox virus-, and rickettsia-specific antibodies were demonstrated. Puumala hantavirus, C. burnetii, and T. gondii were neither detected by RT-PCR/PCR nor by serological methods. In addition, multiple infections with up to three pathogens were shown in nine animals of three rodent species from different trapping sites. In conclusion, these results show that rodents in Austria may host multiple zoonotic pathogens. Our observation raises important questions regarding the interactions of different pathogens in the host, the countermeasures of the host's immune system, the impact of the host-pathogen interaction on the fitness of the host, and the spread of infectious agents among wild rodents and from those to other animals or humans.

Inmunogenicidad y tolerancia de una vacuna contra influenza, en una población mexicana mayor de 55 años de edad Immunogenicity and safety of the influenza vaccine, in a population older than 55-years in Mexico

Directory of Open Access Journals (Sweden)

Octavio Ayala-Montiel

2005-04-01

Full Text Available OBJETIVO: Verificar la inmunogenicidad y tolerancia de una vacuna purificada, inactivada y fraccionada contra influenza, en adultos mexicanos derechohabientes de Petróleos Mexicanos (Pemex. MATERIAL Y MÉTODOS: Se incluyeron 90 adultos mayores de 55 años de edad, derechohabientes de los servicios médicos del Hospital Central Sur Pemex, durante los meses de noviembre y diciembre de 2000. Los criterios evaluados en relación con la inmunogenicidad incluyeron el porcentaje de sujetos protegidos, cuantificados por medio de anticuerpos antihemaglutininas superior o igual a 1:40, así como por el porcentaje de seroconversión determinado por el título inicial de anticuerpos multiplicado por un factor 4X. Los criterios secundarios fueron la frecuencia de reacciones adversas tanto locales como sistémicas. Se realizaron estudios de afinidad antígeno-anticuerpo para determinar la respuesta policlonal de anticuerpos y de anticuerpos de alta afinidad prevacunación y posvacunación. Se calcularon frecuencias y porcentajes. RESULTADOS: Se identificó una seroprotección en 95.6% de los sujetos a la cepa H1N1, de 98.9% a la cepa H3N2 y de 100% a la cepa B/ Yamanashi. En cuanto a los porcentajes de seroconversión, se identificó un incremento 4X de 74.4 para la cepa H1N1, de 88.9 para la cepa H3N2, y de 82.2 para la cepa B / Yamanashi. Un total de 18 individuos (20% presentaron reacciones locales, mientras que 17 (18.8% presentaron reacciones sistémicas a los cinco días posvacunación y nueve sujetos (10% a los 28 días. Las reacciones locales a los cinco días consistieron en dolor, en 10 individuos (11.1%; enrojecimiento, en ocho (8.8%, e induración, en seis (6.6%. Malestar general, cefalea y fiebre se presentaron a los cinco días en 10, 8.8, y 0% de individuos, respectivamente, y en 4.4, 6.6, y 0%, respectivamente, a los 28 días. CONCLUSIONES: Esta vacuna contra influenza demostró ser altamente inmunogénica en adultos mexicanos mayores de 55 a

Invasão tolteca em Chichén Itzá? Uma nova leitura da questão a partir da cultura material das Terras Maias Baixas do Norte

OpenAIRE

Navarro, Alexandre Guida

2010-01-01

Este artigo trata de uma das questões mais controversas da Arqueologia do México: uma possível invasão tolteca na cidade de Chichén Itzá. O assunto divide opiniões. Para um grupo de pesquisadores, Chichén Itzá é fruto da invasão dos habitantes de Tula, uma cidade do altiplano mexicano, a mais de 100 de distância dela. Já para outros pesquisadores, esta invasão não ocorreu e Chichén Itzá tem seu desenvolvimento dentro de uma tradição maia. Neste texto, mostramos algumas evidências arqueológica...

Derechos de propiedad e industria petrolera mexicana

OpenAIRE

Rosío Vargas

2013-01-01

De un control de los recursos mineros a fines del siglo antepasado, por parte de las corporaciones internaciona- les, la industria petrolera mexicana transitó a un régimen de soberanía nacional y propiedad pública del petróleo después de 1938 que le permitió el diseño de una política económica con vocación nacional asignando varias tareas a PEMEX. La adopción del modelo neoliberal en los ochenta, como fundamento de la estrategia macroeco- nómica, fue el punto de retorno al contr...

Generalized Probability Functions

Directory of Open Access Journals (Sweden)

Alexandre Souto Martinez

2009-01-01

Full Text Available From the integration of nonsymmetrical hyperboles, a one-parameter generalization of the logarithmic function is obtained. Inverting this function, one obtains the generalized exponential function. Motivated by the mathematical curiosity, we show that these generalized functions are suitable to generalize some probability density functions (pdfs. A very reliable rank distribution can be conveniently described by the generalized exponential function. Finally, we turn the attention to the generalization of one- and two-tail stretched exponential functions. We obtain, as particular cases, the generalized error function, the Zipf-Mandelbrot pdf, the generalized Gaussian and Laplace pdf. Their cumulative functions and moments were also obtained analytically.

Generalized Cartan Calculus in general dimension

Science.gov (United States)

Wang, Yi-Nan

2015-07-01

We develop the generalized Cartan Calculus for the groups and SO(5 , 5). They are the underlying algebraic structures of d = 9 , 7 , 6 exceptional field theory, respectively. These algebraic identities are needed for the "tensor hierarchy" structure in exceptional field theory. The validity of Poincaré lemmas in this new differential geometry is also discussed. Finally we explore some possible extension of the generalized Cartan calculus beyond the exceptional series.

General Editorial

Indian Academy of Sciences (India)

Home; Journals; Resonance – Journal of Science Education. General Editorial. Articles in Resonance – Journal of Science Education. Volume 19 Issue 1 January 2014 pp 1-2 General Editorial. General Editorial on Publication Ethics · R Ramaswamy · More Details Fulltext PDF. Volume 19 Issue 1 January 2014 pp 3-3 ...

Generalized convexity, generalized monotonicity recent results

CERN Document Server

Martinez-Legaz, Juan-Enrique; Volle, Michel

1998-01-01

A function is convex if its epigraph is convex. This geometrical structure has very strong implications in terms of continuity and differentiability. Separation theorems lead to optimality conditions and duality for convex problems. A function is quasiconvex if its lower level sets are convex. Here again, the geo­ metrical structure of the level sets implies some continuity and differentiability properties for quasiconvex functions. Optimality conditions and duality can be derived for optimization problems involving such functions as well. Over a period of about fifty years, quasiconvex and other generalized convex functions have been considered in a variety of fields including economies, man­ agement science, engineering, probability and applied sciences in accordance with the need of particular applications. During the last twenty-five years, an increase of research activities in this field has been witnessed. More recently generalized monotonicity of maps has been studied. It relates to generalized conve...

Thyroid cancer among children and adolescents in Russia following the Chernobyl accident. Retrospective estimation of thyroid doses and case - control study

International Nuclear Information System (INIS)

Ivanov, V.K.; Pitkevich, V.A.; Chekin, S.Yu.

2000-01-01

The first large-scale study of thyroid cancer among young people in Russia following the Chernobyl accident was conducted. The study population consists of all children and adolescents (17 years and less) who were resided in Kaluga, Orel and Tula oblasts of Russia at the time of Chernobyl accident. Kaluga, Orel and Tula oblasts are approximately equally contaminated oblasts of Russia (up to 15 Ci/km2 for cesium-137). All prevalent and new carcinoma cases from 1 January 1992 to 31 December 1998 were collected in 1997-1998 years as a result of joint project on thyroid disease conducted by the Medical Radiological Research Center (Russia), International Agency for Research on Cancer (France) and Sasakawa Memorial Health Foundation (Japan). Cases of thyroid cancer were found through the Russia National Medical and Dosimetric Registry and Russian Oncology Dispensaries. All cases were independently hystologically verified by the international panel of pathologists from Russia, Belarus and Europe. There were 12 cases in Kaluga, 27 cases in Orel and 23 cases in Tula oblasts. For each case were randomly selected two and four controls: two controls were matched on age, sex and on settlement of residence at the time of accident; four controls were matched on age, sex and on oblast of residence at the time of accident. Each patient and corresponding controls were examinated by the high-resolution ultrasonographic instrument and were interviewed by special trained medical staff. The new technique for reconstruction of the individual dose of internal irradiation of thyroid with incorporated 131 I was developed. The method allows to take into account major factors influencing formation thyroid doses of the population: (1) three sources of receipt 131 I in organism of the man: inhalation, consumption of milk and green vegetables; (2) types of food production: public and private (individual) sectors of its (her) manufacture; (3) weather conditions of spring of 1986 in regions of

CICLAJE Y PÉRDIDA DE NUTRIENTES DEL SUELO EN BOSQUES ALTOANDINOS DE ANTIOQUIA, COLOMBIA NUTRIENT CYCLING AND NUTRIENT LOSSES IN ANDEAN MONTANE FORESTS FROM ANTIOQUIA, COLOMBIA

Directory of Open Access Journals (Sweden)

Adriana Londoño Álvarez

2007-06-01

Full Text Available El agua gravitacional y su composición química fueron medidos en bosques montanos de Quercus humboldtii y reforestados (Pinus patula y Cupressus lusitanica de la región de Piedras Blancas, Antioquia (Colombia, por un período de tiempo de dos años. Se utilizaron lisímetros sin tensión con el fin de estimar el agua gravitacional y los flujos de nutrientes a diferentes profundidades en el perfil del suelo. El mayor valor anual de agua gravitacional en el nivel más profundo (50- 80 cm, fue hallado en la cobertura de ciprés ( 492,7 mm, seguido por pino pátula ( 14,2 mm y roble ( 2,0 mm. De manera similar ocurrió con la pérdida de nutrientes, mostrando el mismo patrón hallado para el agua gravitacional. Así, para roble, pátula y ciprés, en su orden, se presentaron los siguientes valores de pérdida: Ca: 0,004, 0,084 y 2,270 kg ha-1 año-1; P: 0,008, 0,052 y 1,234 kg ha-1 año-1; Mg: 0,004, 0,022 y 0,667 kg ha-1 año-1. De K se registraron 0,08 y 7,092 kg ha-1 año-1 para roble y ciprés respectivamente. Estos flujos siguieron el siguiente orden según cobertura, roble: K>P>Ca>Mg, pátula: Ca>Fe>P>Mg>Zn>Mn, y ciprés: K>Mn>Ca>P>Fe>Zn>Mg.Gravitational flow and its chemical composition were measured in montane oak forests (Quercus humboldtii, in pine (Pinus patula and cypress (Cupressus lusitanica plantations in Piedras Blancas, Antioquia ( Colombia , over two years. Zero tension lysimeters were used at different depth soil levels. The highest gravitational flow value at highest depth (50- 80 cm was obtained in cypress plot ( 492,7 mm, followed by pine ( 14,2 mm and oak forest ( 2,0 mm. A similar behavior was encountered for nutrient losses, following the same pattern as gravitational flow. Thus, for oak, pine and cypress, nutrient losses were respectively: Ca: 0,004, 0,084 and 2,270 kg ha-1 y-1; P: 0,008, 0,052 and 1,234 kg ha-1 y -1; Mg: 0,004, 0,022 and 0,667 kg ha-1 y-1. K losses were 0,08 and 7,092 kg ha-1 y-1 for oak forest and

Action principle for the generalized harmonic formulation of general relativity

International Nuclear Information System (INIS)

Brown, J. David

2011-01-01

An action principle for the generalized harmonic formulation of general relativity is presented. The action is a functional of the spacetime metric and the gauge source vector. An action principle for the Z4 formulation of general relativity has been proposed recently by Bona, Bona-Casas, and Palenzuela. The relationship between the generalized harmonic action and the Bona, Bona-Casas, and Palenzuela action is discussed in detail.

Generalized polygons

CERN Document Server

Van Maldeghem, Hendrik

1998-01-01

Generalized Polygons is the first book to cover, in a coherent manner, the theory of polygons from scratch. In particular, it fills elementary gaps in the literature and gives an up-to-date account of current research in this area, including most proofs, which are often unified and streamlined in comparison to the versions generally known. Generalized Polygons will be welcomed both by the student seeking an introduction to the subject as well as the researcher who will value the work as a reference. In particular, it will be of great value for specialists working in the field of generalized polygons (which are, incidentally, the rank 2 Tits-buildings) or in fields directly related to Tits-buildings, incidence geometry and finite geometry. The approach taken in the book is of geometric nature, but algebraic results are included and proven (in a geometric way!). A noteworthy feature is that the book unifies and generalizes notions, definitions and results that exist for quadrangles, hexagons, octagons - in the ...

Engineering a General Education Program: Designing Mechanical Engineering General Education Courses

Science.gov (United States)

Fagette, Paul; Chen, Shih-Jiun; Baran, George R.; Samuel, Solomon P.; Kiani, Mohammad F.

2013-01-01

The Department of Mechanical Engineering at our institution created two engineering courses for the General Education Program that count towards second level general science credit (traditional science courses are first level). The courses were designed for the general student population based upon the requirements of our General Education Program…

Diffuse control of gas turbines in power stations of combined cycle; Contral difuso de turbinas de gas en centrales de ciclo combinado

Energy Technology Data Exchange (ETDEWEB)

Sanchez P, Marino; Garduno R, Raul; De Lara J, Salvadror; Castelo C, Luis [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2001-07-01

In this article the application of the technology of the fuzzy logic to the control of gas turbines is presented in order to evaluate it in one of the most difficult processes and with stricter control requirements that exist in the electrical generation industry. For being important for the generation electrical sector, given their use in Comision Federal de Electricidad (CFE), the first selected prototype was the gas turbines model W501 of Westinghouse, installed in the of combined cycle power stations of Dos Bocas, Veracruz, Gomez Palacio, Durango and Tula, Hidalgo, Mexico. The second selected prototype was the one of the turbo gas units type 5001 (that applies to the GE 5001 models and Westinghouse of series 191 and 251). Based on the analysis of the performance of the system of conventional control previously made, the controllers of speed and generation of electrical power were selected to be replaced by diffuse controllers. [Spanish] En este articulo se presenta la aplicacion de la tecnologia de la logica difusa al control de turbinas de gas con el proposito de evaluarla en uno de los procesos mas dificiles y con requerimientos mas estrictos de control que existen en la industria de generacion electrica. Por ser importantes para el sector electrico de generacion, dada su utilizacion en Comision Federal de Electricidad (CFE), el primer prototipo seleccionado fueron las turbinas de gas modelo W501 de Westinghouse, instaladas en la central de ciclo combinado de Dos Bocas, Veracruz, Gomez Palacio, Durango y Tula, Hidalgo, Mexico. El segundo prototipo seleccionado fue el de unidades turbogas tipo 5001 (que aplica a los modelos GE 5001 y Westinghouse de la serie 191 y 251). Basados en el analisis del desempeno del sistema de control convencional realizado previamente, los controladores de velocidad y de generacion de potencia electrica fueron seleccionados para ser sustituidos por controladores difusos.

Generalized product

OpenAIRE

Greco, Salvatore; Mesiar, Radko; Rindone, Fabio

2014-01-01

Aggregation functions on [0,1] with annihilator 0 can be seen as a generalized product on [0,1]. We study the generalized product on the bipolar scale [–1,1], stressing the axiomatic point of view. Based on newly introduced bipolar properties, such as the bipolar increasingness, bipolar unit element, bipolar idempotent element, several kinds of generalized bipolar product are introduced and studied. A special stress is put on bipolar semicopulas, bipolar quasi-copulas and bipolar copulas.

Calfornia General Plans

Data.gov (United States)

California Natural Resource Agency — We undertook creating the first ever seamless statewide General Plan map for California. All county general plans and many city general plans were integrated into 1...

Generalized Predictive Control and Neural Generalized Predictive Control

Directory of Open Access Journals (Sweden)

Sadhana CHIDRAWAR

2008-12-01

Full Text Available As Model Predictive Control (MPC relies on the predictive Control using a multilayer feed forward network as the plants linear model is presented. In using Newton-Raphson as the optimization algorithm, the number of iterations needed for convergence is significantly reduced from other techniques. This paper presents a detailed derivation of the Generalized Predictive Control and Neural Generalized Predictive Control with Newton-Raphson as minimization algorithm. Taking three separate systems, performances of the system has been tested. Simulation results show the effect of neural network on Generalized Predictive Control. The performance comparison of this three system configurations has been given in terms of ISE and IAE.

General Nuclear Medicine

Science.gov (United States)

... Resources Professions Site Index A-Z General Nuclear Medicine Nuclear medicine imaging uses small amounts of radioactive ... of General Nuclear Medicine? What is General Nuclear Medicine? Nuclear medicine is a branch of medical imaging ...

The use of generalized functions and distributions in general relativity

International Nuclear Information System (INIS)

Steinbauer, R; Vickers, J A

2006-01-01

We review the extent to which one can use classical distribution theory in describing solutions of Einstein's equations. We show that there are a number of physically interesting cases which cannot be treated using distribution theory but require a more general concept. We describe a mathematical theory of nonlinear generalized functions based on Colombeau algebras and show how this may be applied in general relativity. We end by discussing the concept of singularity in general relativity and show that certain solutions with weak singularities may be regarded as distributional solutions of Einstein's equations. (topical review)

Formulação analítica do cálculo em regime elastoplástico de um elemento de viga plano de secção rectangular

OpenAIRE

Baptista, A. M.

2008-01-01

O presente trabalho apresenta uma formulação analítica do cálculo dos deslocamentos (rotação, flecha e deslocamento axial) de uma secção transversal qualquer dum elemento estrutural de barra plano (viga ou coluna-viga, p. ex.) de secção rectangular, de aço, submetido a uma força axial constante e a um momento flector em cada uma das suas extremidades. As equações apresentadas fornecem um método de cálculo não linear expedito e exacto, alternativo aos métodos clássicos das “rótulas plástic...

General Ultrasound Imaging

Medline Plus

Full Text Available ... News Physician Resources Professions Site Index A-Z General Ultrasound Ultrasound imaging uses sound waves to produce ... the limitations of General Ultrasound Imaging? What is General Ultrasound Imaging? Ultrasound is safe and painless, and ...

General relativity

International Nuclear Information System (INIS)

Kenyon, I.R.

1990-01-01

General relativity is discussed in this book at a level appropriate to undergraduate students of physics and astronomy. It describes concepts and experimental results, and provides a succinct account of the formalism. A brief review of special relativity is followed by a discussion of the equivalence principle and its implications. Other topics covered include the concepts of curvature and the Schwarzschild metric, test of the general theory, black holes and their properties, gravitational radiation and methods for its detection, the impact of general relativity on cosmology, and the continuing search for a quantum theory of gravity. (author)

General Relativity

CERN Document Server

Straumann, Norbert

2013-01-01

This book provides a completely revised and expanded version of the previous classic edition ‘General Relativity and Relativistic Astrophysics’. In Part I the foundations of general relativity are thoroughly developed, while Part II is devoted to tests of general relativity and many of its applications. Binary pulsars – our best laboratories for general relativity – are studied in considerable detail. An introduction to gravitational lensing theory is included as well, so as to make the current literature on the subject accessible to readers. Considerable attention is devoted to the study of compact objects, especially to black holes. This includes a detailed derivation of the Kerr solution, Israel’s proof of his uniqueness theorem, and a derivation of the basic laws of black hole physics. Part II ends with Witten’s proof of the positive energy theorem, which is presented in detail, together with the required tools on spin structures and spinor analysis. In Part III, all of the differential geomet...

Context-dependent Generalization

Directory of Open Access Journals (Sweden)

Jordan A Taylor

2013-05-01

Full Text Available The pattern of generalization following motor learning can provide a probe on the neural mechanisms underlying learning. For example, the breadth of generalization to untrained regions of space after visuomotor adaptation to targets in a restricted region of space has been attributed to the directional tuning properties of neurons in the motor system. Building on this idea, the effect of different types of perturbations on generalization (e.g., rotation versus visual translation have been attributed to the selection of differentially tuned populations. Overlooked in this discussion is consideration of how the context of the training environment may constrain generalization. Here, we explore the role of context by having participants learn a visuomotor rotation or a translational shift in two different contexts, one in which the array of targets were presented in a circular arrangement and the other in which they were presented in a rectilinear arrangement. The perturbation and environments were either consistent (e.g., rotation with circular arrangement or inconsistent (e.g., rotation with rectilinear arrangement. The pattern of generalization across the workspace was much more dependent on the context of the environment than on the perturbation, with broad generalization for the rectilinear arrangement for both types of perturbations. Moreover, the generalization pattern for this context was evident, even when the perturbation was introduced in a gradual manner, precluding the use of an explicit strategy. We describe how current models of generalization might be modified to incorporate these results, building on the idea that context provides a strong bias for how the motor system infers the nature of the visuomotor perturbation and, in turn, how this information influences the pattern of generalization.

Generalized hypergeometric coherent states

International Nuclear Information System (INIS)

Appl, Thomas; Schiller, Diethard H

2004-01-01

We introduce a large class of holomorphic quantum states by choosing their normalization functions to be given by generalized hypergeometric functions. We call them generalized hypergeometric states in general, and generalized hypergeometric coherent states in particular, if they allow a resolution of unity. Depending on the domain of convergence of the generalized hypergeometric functions, we distinguish generalized hypergeometric states on the plane, the open unit disc and the unit circle. All states are eigenstates of suitably defined lowering operators. We then study their photon number statistics and phase properties as revealed by the Husimi and Pegg-Barnett phase distributions. On the basis of the generalized hypergeometric coherent states we introduce new analytic representations of arbitrary quantum states in Bargmann and Hardy spaces as well as generalized hypergeometric Husimi distributions and corresponding phase distributions

General Assembly

CERN Multimedia

Staff Association

2016-01-01

5th April, 2016 – Ordinary General Assembly of the Staff Association! In the first semester of each year, the Staff Association (SA) invites its members to attend and participate in the Ordinary General Assembly (OGA). This year the OGA will be held on Tuesday, April 5th 2016 from 11:00 to 12:00 in BE Auditorium, Meyrin (6-2-024). During the Ordinary General Assembly, the activity and financial reports of the SA are presented and submitted for approval to the members. This is the occasion to get a global view on the activities of the SA, its financial management, and an opportunity to express one’s opinion, including taking part in the votes. Other points are listed on the agenda, as proposed by the Staff Council. Who can vote? Only “ordinary” members (MPE) of the SA can vote. Associated members (MPA) of the SA and/or affiliated pensioners have a right to vote on those topics that are of direct interest to them. Who can give his/her opinion? The Ordinary General Asse...

Generally representative is generally representative: comment on Shuttleworth-Edwards.

Science.gov (United States)

Taylor, Nicola

2016-10-01

The aim of this paper is to provide comment on Shuttleworth-Edwards' criticism of the general population norms created for the South African adaptation of the WAIS-IV. In her criticism, she states that the norms are not applicable for any groups in South Africa, based on the fact that the norms were not stratified according to quality of education. A discussion of some of the key issues that impact on the creation of general population norms in the South African context is provided. Demographic characteristics such as education level, quality of education, urban and rural demarcations, and home language are all considered. While the utility of within-group norms is not denied, the adoption of these without reference to the general population is not advised. To recommend that practitioners simply dispense with the general population norm without evidence that it creates misclassification or does not function effectively for the intended population lacks scientific merit at the current time. The need for clinical studies and further predictive validity research using the South African adaptation of the WAIS-IV is crucial to demonstrate the continued utility of the test in the South African context. Additional reference groups will improve the amount of comparative information available for clinicians to be able to make better informed decisions for diagnosis, but the general population norms will be an important starting point in this process.

Generalized quantum statistics

International Nuclear Information System (INIS)

Chou, C.

1992-01-01

In the paper, a non-anyonic generalization of quantum statistics is presented, in which Fermi-Dirac statistics (FDS) and Bose-Einstein statistics (BES) appear as two special cases. The new quantum statistics, which is characterized by the dimension of its single particle Fock space, contains three consistent parts, namely the generalized bilinear quantization, the generalized quantum mechanical description and the corresponding statistical mechanics

Inductive, Analogical, and Communicative Generalization

Directory of Open Access Journals (Sweden)

Adri Smaling

2003-03-01

Full Text Available Three forms of inductive generalization - statistical generalization, variation-based generalization and theory-carried generalization - are insufficient concerning case-to-case generalization, which is a form of analogical generalization. The quality of case-to-case generalization needs to be reinforced by setting up explicit analogical argumentation. To evaluate analogical argumentation six criteria are discussed. Good analogical reasoning is an indispensable support to forms of communicative generalization - receptive and responsive (participative generalization — as well as exemplary generalization.

Generally covariant gauge theories

International Nuclear Information System (INIS)

Capovilla, R.

1992-01-01

A new class of generally covariant gauge theories in four space-time dimensions is investigated. The field variables are taken to be a Lie algebra valued connection 1-form and a scalar density. Modulo an important degeneracy, complex [euclidean] vacuum general relativity corresponds to a special case in this class. A canonical analysis of the generally covariant gauge theories with the same gauge group as general relativity shows that they describe two degrees of freedom per space point, qualifying therefore as a new set of neighbors of general relativity. The modification of the algebra of the constraints with respect to the general relativity case is computed; this is used in addressing the question of how general relativity stands out from its neighbors. (orig.)

Generalized inverses theory and computations

CERN Document Server

Wang, Guorong; Qiao, Sanzheng

2018-01-01

This book begins with the fundamentals of the generalized inverses, then moves to more advanced topics. It presents a theoretical study of the generalization of Cramer's rule, determinant representations of the generalized inverses, reverse order law of the generalized inverses of a matrix product, structures of the generalized inverses of structured matrices, parallel computation of the generalized inverses, perturbation analysis of the generalized inverses, an algorithmic study of the computational methods for the full-rank factorization of a generalized inverse, generalized singular value decomposition, imbedding method, finite method, generalized inverses of polynomial matrices, and generalized inverses of linear operators. This book is intended for researchers, postdocs, and graduate students in the area of the generalized inverses with an undergraduate-level understanding of linear algebra.

Unsupervised Learning and Generalization

DEFF Research Database (Denmark)

Hansen, Lars Kai; Larsen, Jan

1996-01-01

The concept of generalization is defined for a general class of unsupervised learning machines. The generalization error is a straightforward extension of the corresponding concept for supervised learning, and may be estimated empirically using a test set or by statistical means-in close analogy ...... with supervised learning. The empirical and analytical estimates are compared for principal component analysis and for K-means clustering based density estimation......The concept of generalization is defined for a general class of unsupervised learning machines. The generalization error is a straightforward extension of the corresponding concept for supervised learning, and may be estimated empirically using a test set or by statistical means-in close analogy...

Generalized complex geometry, generalized branes and the Hitchin sigma model

International Nuclear Information System (INIS)

Zucchini, Roberto

2005-01-01

Hitchin's generalized complex geometry has been shown to be relevant in compactifications of superstring theory with fluxes and is expected to lead to a deeper understanding of mirror symmetry. Gualtieri's notion of generalized complex submanifold seems to be a natural candidate for the description of branes in this context. Recently, we introduced a Batalin-Vilkovisky field theoretic realization of generalized complex geometry, the Hitchin sigma model, extending the well known Poisson sigma model. In this paper, exploiting Gualtieri's formalism, we incorporate branes into the model. A detailed study of the boundary conditions obeyed by the world sheet fields is provided. Finally, it is found that, when branes are present, the classical Batalin-Vilkovisky cohomology contains an extra sector that is related non trivially to a novel cohomology associated with the branes as generalized complex submanifolds. (author)

Generalized EMV-Effect Algebras

Science.gov (United States)

Borzooei, R. A.; Dvurečenskij, A.; Sharafi, A. H.

2018-04-01

Recently in Dvurečenskij and Zahiri (2017), new algebraic structures, called EMV-algebras which generalize both MV-algebras and generalized Boolean algebras, were introduced. We present equivalent conditions for EMV-algebras. In addition, we define a partial algebraic structure, called a generalized EMV-effect algebra, which is close to generalized MV-effect algebras. Finally, we show that every generalized EMV-effect algebra is either an MV-effect algebra or can be embedded into an MV-effect algebra as a maximal ideal.

On Generalized Fractional Kinetic Equations Involving Generalized Bessel Function of the First Kind

Directory of Open Access Journals (Sweden)

Dinesh Kumar

2015-01-01

Full Text Available We develop a new and further generalized form of the fractional kinetic equation involving generalized Bessel function of the first kind. The manifold generality of the generalized Bessel function of the first kind is discussed in terms of the solution of the fractional kinetic equation in the paper. The results obtained here are quite general in nature and capable of yielding a very large number of known and (presumably new results.

Renewable energy: Political momentum and technology for a sustainable Mexico; Energias Renovables: Impulso politico y tecnologico para un Mexico sustentable

Energy Technology Data Exchange (ETDEWEB)

Romero Hernandez, Sergio; Romero Hernandez, Omar; Wood, Duncan [Instituto Tecnologico Autonomo de Mexico (ITAM) (Mexico)

2011-04-15

The renewable energy sector in Mexico, as shown in this book, is alive and in good condition, prospers and has great potential. In this regard, it is essential that Mexico sees itself as a country with an energy future beyond Cantarell, beyond Pemex and beyond oil. The future of renewable energy offers great hope for the country and the region, and the time is right for a consensus government, business and social more strongly boost the development of this sector. This book discusses the following topics: Renewable energy and sustainable economic development, the regulatory framework for the use of renewable energy, hydropower, bioenergy, Part I: biomass and biogas, bioenergy, Part II: Liquid biofuels; elements for promotion of wind energy in Mexico, geothermal energy, solar PV, solar thermal and micro. [Spanish] El sector de la energia renovable en Mexico, como se muestra en este libro, esta vivo y en buenas condiciones, prospera y tiene gran potencial. En ese sentido, resulta indispensable que Mexico se vea a si mismo como un pais con un futuro energetico mas alla de Cantarell, mas alla de PEMEX, mas alla del petroleo. El futuro de la energia renovable ofrece una gran esperanza para el pais y la region, y el tiempo es adecuado para que una concertacion gubernamental, empresarial y social impulse con mas fuerza el desarrollo de este sector. En este libro se analizan los siguientes temas: Energias renovables y desarrollo economico sustentable; el marco normativo de la utilizacion de las energias renovables; energia hidroelectrica; bioenergia, parte I: biomasa y biogas; bioenergia, parte II: biocombustibles liquidos; elementos para la promocion de la energia eolica en Mexico; energia geotermica; energia solar fotovoltaica; energia solar termica, y la microgeneracion.

Determination of the state of operating mechanical stresses acting on surface piping with problems of differential collapses in the Venta de Carpio Terminal; Determinacion del estado de esfuerzos mecanicos actuantes en tuberias superficiales con problemas de hundimientos diferenciales en la Terminal Venta de Carpio

Energy Technology Data Exchange (ETDEWEB)

Neri B, Ernesto R; Garcia E, Nairoby [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

2004-07-01

The Venta de Carpio Terminal is located in the Northern part of the old Texcoco Lake, State of Mexico, in highly compressible soil. In it, it is received, regulated, measured and distributed natural gas, LP gas and PEMEX Refinacion products that are supplied to distribution terminals of and consumption centers located in the central area of the country, that encompasses the states of Puebla, Tlaxcala, Mexico, Hidalgo, Queretaro and a small part of the Federal District. The construction of the Venta de Carpio station dates from 1960; since then, it has presented important regional settlements, mainly due to the water extraction of the subsoil, that have imposed deformations to the piping systems connected to the surface facilities that have been piloted in the terminal. Equally, other surface piping systems and facilities present deformations by differential settlement between their supports. [Spanish] La Terminal Venta de Carpio se ubica en la parte norte del antiguo Lago de Texcoco, Estado de Mexico, en terreno altamente compresible. En ella, se recibe, regula, mide y distribuye gas natural, gas LP y productos de Pemex Refinacion que se suministran a terminales de distribucion y centros de consumo localizados en el area central del pais, que comprende los estados de Puebla, Tlaxcala, Mexico, Hidalgo, Queretaro y una pequena parte del Distrito Federal. La construccion de la estacion Venta de Carpio data de 1960; desde entonces, se han presentado asentamientos regionales importantes debidos, principalmente a la extraccion de agua del subsuelo, que han impuesto deformaciones a los sistemas de tuberias conectados con las instalaciones superficiales que han sido piloteadas en la terminal. De igual modo, otros sistemas de tuberias e instalaciones superficiales presentan deformaciones por hundimientos diferenciales entre sus apoyos.

Adjustment of electrical equipment in the Akal-J oil platform of PEP for the implementation of the dehydration and desalting system of crude; Adecuacion de equipo electrico en la plataforma Akal-J de PEP para la implementacion del sistema de deshidratacion y desalado de crudo

Energy Technology Data Exchange (ETDEWEB)

Huesca Amador, Victor Hugo; Rosales Sedano, Inocente [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Coutino Gonzalez, Marina [PEMEX, Region Marina Noreste (Mexico)

2010-10-09

The Integral Asset Cantarell (AIC), of PEMEX Exploration and Production (PEP), developed a project to carry out the dehydration and desalting process of Maya (DDCM) crude of 300 MBD (thousands of daily barrels) of the Process Center (PC) of Akal-J through two integral systems of DDCM, with a capacity of 150 MBD each. The Process Center of Akal-J is conformed by eight marine platforms and the selected ones, by space availability to install these systems, were Akal-J2 and Akal-J3. In this paper the electrical analyses realized to determine the feasibility of the provision of energy to the required electrical equipment is presented, to implement the dehydration and desalting process of 300 MBD of Mayan crude, as well as the recommendations for a reliable and safe operation of the electrical system of the PC Akal-J. [Spanish] El Activo Integral Cantarell (AIC), de PEMEX Exploracion y Produccion (PEP), desarrollo un proyecto para efectuar el proceso de deshidratacion y desalado de crudo Maya (DDCM) de 300 MBD (miles de barriles diarios) de el Centro de Proceso (CP) Akal-J a traves de dos sistemas integrales de DDCM, con una capacidad de 150 MBD cada uno. El Centro de Proceso Akal-J se encuentra conformado por ocho plataformas marinas y las seleccionadas, por disponibilidad de espacio para instalar dichos sistemas, fueron Akal-J2 y Akal-J3. En este trabajo se presentan los analisis electricos realizados para determinar la factibilidad del suministro de energia a los equipos electricos requeridos, para implementar el proceso de deshidratacion y desalado de 300 MBD de crudo Maya, asi como las recomendaciones para una operacion confiable y segura del sistema electrico del CP Akal-J.

Reverse polarity magnetized melt rocks from the Chicxulub impact structure, Yucatan Peninsula, Mexico

Science.gov (United States)

Urrutia-Fucugauchi, Jaime; Marin, Luis E.; Sharpton, Virgil L.; Quezada, Juan Manuel

1993-03-01

Further paleomagnetic data for core samples of melt rock recovered in the Petroleos Mexicanos (PEMEX) exploratory wells within the Chicxulub structure, northern Yucatan peninsula, Mexico are reported. A previous report by Sharpton showed that the rocks studied contain high iridium levels and shocked breccia clasts, and an Ar-40/Ar-39 age of 65.2 plus or minus 0.4 Ma. The geomagnetic polarity determined for two samples is reverse (R) and was correlated with chron 29R that includes the K/T boundary. Our present analysis is based on two samples from each of three clasts of the melt rock from PEMEX well Y6-N17 (1295 to 1299 m b.s.l.). This study concentrates on the vectorial nature and stability of the remanence (NRM), the magnetic mineralogy and remanence carriers (i.e., the reliability and origin of the record), and on the implications (correlation with expected paleolatitude and polarity). The relative orientation of the drill core samples with respect to the horizontal is known. Samples were stable under alternating field (AF) and thermal treatments, and after removal of a small component they exhibited single-vectorial behavior. The characteristic remanence inclinations show small dispersion and a mean value (-43 deg) in close agreement with the expected inclination and paleolatitude (derived from the North American apparent polar wander path). Isothermal remenence (IRM) acquisition experiments, Lowrie-Fuller tests, coercivity and unblocking temperature spectra of NRM and saturation IRM, susceptibility and Q-coefficient analyses, and the single-component nature indicate a dominant mineralogy of iron-rich titanomagnetites with single or pseduo-single domain states. The stable characteristic magnetization may be interpreted as a result of shock heating of the rock at the time of formation of the inpact structure and its polarity, age, and paleolatitude are consistent with a time about the K/T boundary.

A comparison of the response of Simocephalus mixtus (Cladocera) and Daphnia magna to contaminated freshwater sediments.

Science.gov (United States)

Martínez-Jerónimo, Fernando; Cruz-Cisneros, Jade Lizette; García-Hernández, Leonardo

2008-09-01

The southeast region of Mexico is characterized by intensive oil industry activities carried out by the national public enterprise Petróleos Mexicanos (PEMEX). The freshwater lagoon "El Limón", located in the municipality of Macuspana, state of Tabasco, Mexico, has received over 40 years discharges of untreated waste waters from the Petrochemical Complex "Ciudad PEMEX", located on the border of the lagoon. To assess the toxicity of the sediments and, hence, to obtain information on the biological effects of these contaminating discharges, the cladoceran Simocephalus mixtus was used as a test organism in acute (48h) and chronic (12d) toxicity assays. For comparison purposes, bioassays were also conducted with the reference cladoceran Daphnia magna. The sediments of this lagoon contain important amounts of metals and hydrocarbons that have been accumulated over time; however, the acute tests only registered reduced lethal effects on the test organisms (maxima of 10% and 17% mortality for D. magna and S. mixtus, respectively). This may be due to low bioavailability of the pollutants present in the sediments. On the other hand, partial or total inhibition and delay in the start of reproduction, reduction in clutch sizes, reduced survival, as well as reduction in the size of adults and offspring were recorded in the chronic assays. The most evident chronic effects were found in S. mixtus; in this species, reproduction was inhibited up to 72%, whereas D. magna was only affected by 24%. We determined that S. mixtus is a more sensitive test organism than D. magna to assess whole-sediment toxicity in tropical environments, and that chronic exposure bioassays are required for an integrated sediment evaluation. The sediments from "El Limón" lagoon induced chronic intoxication responses and, therefore, remediation measures are urgently needed to recover environmental conditions suitable for the development of its aquatic biota.

Generalizing: The descriptive struggle

Directory of Open Access Journals (Sweden)

Barney G. Glaser, Ph.D.; Hon Ph.D.

2006-11-01

Full Text Available The literature is not kind to the use of descriptive generalizations. Authors struggle and struggle to find and rationalize a way to use them and then fail in spite of trying a myriad of work-arounds. And then we have Lincoln and Guba’s famous statement: “The only generalization is: there is no generalization” in referring to qualitative research. (op cit, p. 110 They are referring to routine QDA yielding extensive descriptions, but which tacitly include conceptual generalizations without any real thought of knowledge about them. In this chapter I wish to explore this struggle for the purpose of explaining that the various contra arguments to using descriptive generalizations DO NOT apply to the ease of using conceptual generalizations yielded in SGT and especially FGT. I will not argue for the use of descriptive generalization. I agree with Lincoln and Guba with respect to QDA, “the only generalization is: there is no generalization.” It is up to the QDA methodologists, of whom there are many; to continue the struggle and I wish them well.

Delphi General Ledger -

Data.gov (United States)

Department of Transportation — Delphi general ledger contains the following data elements, but is not limited to the United States Standard General Ledger (USSGL) chart of accounts, stores actual,...

[Epizootology of hemorrhagic fever with renal syndrome in the Central Chernozem Region].

Science.gov (United States)

Balakirev, A E; Bashkirtsev, V N; Sedova, N S; Okulova, N M; Trankvilevskiĭ, D V; Sikora, I V; Frolova, S M; Luz'ianov, E N; Shinkorenko, N N; Sapel'nikov, A F; Tkachenko, E A

2006-01-01

A total of 5149 small mammals belonging to 16 species were collected from the Lipetsk, Voronezh, and Belgorod regions (40 administrative districts) in 2003-2004 and examined by ELISA and IFA to detect hantavirus antigen and antibodies in the lung tissues. Hantavirus circulation was revealed in 13 species, the highest hantavirus activity being detected in field (Apodemus agrarius) and small wood (A. (S) uralensis) mice (Dobrava-Belgrad virus), bank (Clethrionomis glareolus) (Puumala virus) and common (Microtus arvalis) (Tula virus) voles. These species were frequently found to have their untypical hantaviruses, which was most commonly observed in small wood mice. It is suggested that the small wood mouse is likely to take a certain part in maintaining the circulation of Dobrava-Belgrad virus.

Geostatistical risk estimation at waste disposal sites in the presence of hot spots

International Nuclear Information System (INIS)

Komnitsas, Kostas; Modis, Kostas

2009-01-01

The present paper aims to estimate risk by using geostatistics at the wider coal mining/waste disposal site of Belkovskaya, Tula region, in Russia. In this area the presence of hot spots causes a spatial trend in the mean value of the random field and a non-Gaussian data distribution. Prior to application of geostatistics, subtraction of trend and appropriate smoothing and transformation of the data into a Gaussian form were carried out; risk maps were then generated for the wider study area in order to assess the probability of exceeding risk thresholds. Finally, the present paper discusses the need for homogenization of soil risk thresholds regarding hazardous elements that will enhance reliability of risk estimation and enable application of appropriate rehabilitation actions in contaminated areas.

O período Epiclássico na Mesoamérica: implicações para a questão tolteca e o sítio arqueológico de Chichén Itz The Epiclassic period in Mesoamerica: implications to the toltec question and the archaeologycal site of Chichén Itzá

OpenAIRE

Alexandre Guida Navarro

2008-01-01

A Arqueologia de Chichén Itzá sugere que sua construção data fundamentalmente do período Clássico Terminal ou Epiclássico (700-950 d.C.), ao invés do Pós-Clássico Inicial (950-1100 d.C.). Esta afirmação chama a atenção para as implicações de cronologia para o muito conhecido problema tolteca. Estamos trabalhando com a premissa que a ocupação de Chichén Itzá é, em sua maior parte, anterior à fase Tollán de Tula (900-1200 d.C.), o que nos leva a crer que o que geralmente é identificado como ico...

28 CFR 30.4 - What are the Attorney General's general responsibilities under the Order?

Science.gov (United States)

2010-07-01

... 28 Judicial Administration 1 2010-07-01 2010-07-01 false What are the Attorney General's general... REVIEW OF DEPARTMENT OF JUSTICE PROGRAMS AND ACTIVITIES § 30.4 What are the Attorney General's general responsibilities under the Order? (a) The Attorney General provides opportunities for consultation by elected...

Generalized Fractional Integral Operators on Generalized Local Morrey Spaces

Directory of Open Access Journals (Sweden)

V. S. Guliyev

2015-01-01

Full Text Available We study the continuity properties of the generalized fractional integral operator Iρ on the generalized local Morrey spaces LMp,φ{x0} and generalized Morrey spaces Mp,φ. We find conditions on the triple (φ1,φ2,ρ which ensure the Spanne-type boundedness of Iρ from one generalized local Morrey space LMp,φ1{x0} to another LMq,φ2{x0}, 1

Generalized Higgs inflation

Energy Technology Data Exchange (ETDEWEB)

Kamada, Kohei [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Kobayashi, Tsutomu [Kyoto Univ. (Japan). Hakubi Center; Kyoto Univ. (Japan). Dept. of Physics; Takahashi, Tomo [Saga Univ. (Japan). Dept. of Physics; Yamaguchi, Masahide [Tokyo Institute of Technology (Japan). Dept. of Physics; Yokoyama, Jun' ichi [Tokyo Univ. (JP). Research Center for the Early Universe (RESCEU); Tokyo Univ., Chiba (JP). Inst. for the Physics and Mathematics of the Universe (IPMU)

2012-03-15

We study Higgs inflation in the context of generalized G-inflation, i.e., the most general single-field inflation model with second-order field equations. The four variants of Higgs inflation proposed so far in the literature can be accommodated at one time in our framework. We also propose yet another class of Higgs inflation, the running Einstein inflation model, that can naturally arise from the generalized G-inflation framework. As a result, five Higgs inflation models in all should be discussed on an equal footing. Concise formulas for primordial fluctuations in these generalized Higgs inflation models are provided, which will be helpful to determine which model is favored from the future experiments and observations such as the Large Hadron Collider and the Planck satellite.

Generalized symmetry algebras

International Nuclear Information System (INIS)

Dragon, N.

1979-01-01

The possible use of trilinear algebras as symmetry algebras for para-Fermi fields is investigated. The shortcomings of the examples are argued to be a general feature of such generalized algebras. (author)

Generalized quantum groups

International Nuclear Information System (INIS)

Leivo, H.P.

1992-01-01

The algebraic approach to quantum groups is generalized to include what may be called an anyonic symmetry, reflecting the appearance of phases more general than ±1 under transposition. (author). 6 refs

Gamma radiation effects on the rheological properties of high and low density polyethylenes

International Nuclear Information System (INIS)

Rangel-Nafaile, C.; Garcia-Rejon, A.; Garcia Leon, A.

1986-01-01

High energy radiation of polymeric materials is a topic of considerable interest from commercial and scientific points of view. Within an inert atmosphere, irradiation of polyethylene yields a crosslinking effect with a consequent improvement in its mechanical properties in comparison to the virgin materials. Additionally, if irradiated specimens are melted and recrystallized, the radiation-induced crosslinking hinders their crystalline growth altering dramatically their flow properties such as the elasticity. This work portrays the effects of the gamma radiation on the rheological properties of high and low density polyethylenes manufactured by PEMEX and analyzes the implications of theoretical results derived from the Acierno's model when it is implemented with the rheological properties of high energy irradiated polyethylenes. (author)

How Mexico can advance its petroleum technology without political risk

International Nuclear Information System (INIS)

Baker, G.

1992-01-01

This paper reports that Mexico's National Science Council (NSC) has made a strong appeal to strengthen Mexico's efforts in science. The energy sector is given special treatment, and NSC urges the federal administration to take a sharper look at the medium and long term implications of its modernization plans. The council urges greater efforts at energy conservation and encourages Mexico's State Petroleum Institute (IMP) to develop the horizontal drilling techniques that Pemex currently obtains only from foreign contractors. Aside from the value of NSC's well-intended advice to the IMP, the council's vision of the energy challenge of Mexico - and of the specific role the petroleum sector within that challenge - is narrowly conceived

Generalized estimating equations

CERN Document Server

Hardin, James W

2002-01-01

Although powerful and flexible, the method of generalized linear models (GLM) is limited in its ability to accurately deal with longitudinal and clustered data. Developed specifically to accommodate these data types, the method of Generalized Estimating Equations (GEE) extends the GLM algorithm to accommodate the correlated data encountered in health research, social science, biology, and other related fields.Generalized Estimating Equations provides the first complete treatment of GEE methodology in all of its variations. After introducing the subject and reviewing GLM, the authors examine th

Modern general topology

CERN Document Server

Nagata, J-I

1985-01-01

This classic work has been fundamentally revised to take account of recent developments in general topology. The first three chapters remain unchanged except for numerous minor corrections and additional exercises, but chapters IV-VII and the new chapter VIII cover the rapid changes that have occurred since 1968 when the first edition appeared.The reader will find many new topics in chapters IV-VIII, e.g. theory of Wallmann-Shanin's compactification, realcompact space, various generalizations of paracompactness, generalized metric spaces, Dugundji type extension theory, linearly ordered topolo

General Ultrasound Imaging

Medline Plus

Full Text Available ... What are the limitations of General Ultrasound Imaging? What is General Ultrasound Imaging? Ultrasound is safe and ... be heard with every heartbeat. top of page What are some common uses of the procedure? Ultrasound ...

Generalized direct Lyapunov method for the analysis of stability and attraction in general time systems

International Nuclear Information System (INIS)

Druzhinina, O V; Shestakov, A A

2002-01-01

A generalized direct Lyapunov method is put forward for the study of stability and attraction in general time systems of the following types: the classical dynamical system in the sense of Birkhoff, the general system in the sense of Zubov, the general system in the sense of Seibert, the general system with delay, and the general 'input-output' system. For such systems, with the help of generalized Lyapunov functions with respect to two filters, two quasifilters, or two filter bases, necessary and sufficient conditions for stability and attraction are obtained under minimal assumptions about the mathematical structure of the general system

Generalized Fourier transforms classes

DEFF Research Database (Denmark)

Berntsen, Svend; Møller, Steen

2002-01-01

The Fourier class of integral transforms with kernels $B(\\omega r)$ has by definition inverse transforms with kernel $B(-\\omega r)$. The space of such transforms is explicitly constructed. A slightly more general class of generalized Fourier transforms are introduced. From the general theory foll...... follows that integral transform with kernels which are products of a Bessel and a Hankel function or which is of a certain general hypergeometric type have inverse transforms of the same structure....

RHEUMATOID ARTHRITIS IN THE RUSSIAN FEDERATION ACCORDING TO RUSSIAN ARTHRITIS REGISTRY DATA (COMMUNICATION I

Directory of Open Access Journals (Sweden)

E. L. Nasonov

2016-01-01

Full Text Available The paper presents the materials of the Russian Arthritis Registry (OREL that includes 3276 patients from 11 Russian Federation's largest research-and-practical centers situated in Moscow, Saint Petersburg, Novosibirsk, Kazan, Tula, Yaroslavl, Tyumen. It discusses the main goals of setting up registries, compares the results of an analysis of the data available in the Russian Registry OREL and registries of European countries and the USA. The findings suggest that there is non-uniform information on clinical, laboratory, and instrumental parameters in the national registers of a number of European countries and the USA. According to its basic characteristics, the Russian Registry OREL compares favorably with a number of other registries in the completeness of data collection, which allows a general idea of rheumatoidarthritis (RA patients in Russia. For further development of the OREL Registry, it is necessary to concentrate our attention on the following main areas: to improve the quality of filling out documents; to follow-up patients receiving different RA therapy regimens according to the guidelines of the Association of Rheumatologists of Russia for the treatment of RA; to conduct in-depth studies of comorbidity, primarily depressive disorders; to analyze adverse reactions that make RA therapy difficult; to actively use modules for patients' self-rating of their condition; to develop nursing care, etc.

Generalized connectivity of graphs

CERN Document Server

Li, Xueliang

2016-01-01

Noteworthy results, proof techniques, open problems and conjectures in generalized (edge-) connectivity are discussed in this book. Both theoretical and practical analyses for generalized (edge-) connectivity of graphs are provided. Topics covered in this book include: generalized (edge-) connectivity of graph classes, algorithms, computational complexity, sharp bounds, Nordhaus-Gaddum-type results, maximum generalized local connectivity, extremal problems, random graphs, multigraphs, relations with the Steiner tree packing problem and generalizations of connectivity. This book enables graduate students to understand and master a segment of graph theory and combinatorial optimization. Researchers in graph theory, combinatorics, combinatorial optimization, probability, computer science, discrete algorithms, complexity analysis, network design, and the information transferring models will find this book useful in their studies.

Generalized Fourier transforms classes

DEFF Research Database (Denmark)

Berntsen, Svend; Møller, Steen

2002-01-01

The Fourier class of integral transforms with kernels $B(\\omega r)$ has by definition inverse transforms with kernel $B(-\\omega r)$. The space of such transforms is explicitly constructed. A slightly more general class of generalized Fourier transforms are introduced. From the general theory...

Forces in general relativity

International Nuclear Information System (INIS)

Ridgely, Charles T

2010-01-01

Many textbooks dealing with general relativity do not demonstrate the derivation of forces in enough detail. The analyses presented herein demonstrate straightforward methods for computing forces by way of general relativity. Covariant divergence of the stress-energy-momentum tensor is used to derive a general expression of the force experienced by an observer in general coordinates. The general force is then applied to the local co-moving coordinate system of a uniformly accelerating observer, leading to an expression of the inertial force experienced by the observer. Next, applying the general force in Schwarzschild coordinates is shown to lead to familiar expressions of the gravitational force. As a more complex demonstration, the general force is applied to an observer in Boyer-Lindquist coordinates near a rotating, Kerr black hole. It is then shown that when the angular momentum of the black hole goes to zero, the force on the observer reduces to the force on an observer held stationary in Schwarzschild coordinates. As a final consideration, the force on an observer moving in rotating coordinates is derived. Expressing the force in terms of Christoffel symbols in rotating coordinates leads to familiar expressions of the centrifugal and Coriolis forces on the observer. It is envisioned that the techniques presented herein will be most useful to graduate level students, as well as those undergraduate students having experience with general relativity and tensor analysis.

Generalized phase contrast:

DEFF Research Database (Denmark)

Glückstad, Jesper; Palima, Darwin

Generalized Phase Contrast elevates the phase contrast technique not only to improve phase imaging but also to cross over and interface with diverse and seemingly disparate fields of contemporary optics and photonics. This book presents a comprehensive introduction to the Generalized Phase Contrast...

Generalized polygons

CERN Document Server

Maldeghem, Hendrik

1998-01-01

This book is intended to be an introduction to the fascinating theory ofgeneralized polygons for both the graduate student and the specialized researcher in the field. It gathers together a lot of basic properties (some of which are usually referred to in research papers as belonging to folklore) and very recent and sometimes deep results. I have chosen a fairly strict geometrical approach, which requires some knowledge of basic projective geometry. Yet, it enables one to prove some typically group-theoretical results such as the determination of the automorphism groups of certain Moufang polygons. As such, some basic group-theoretical knowledge is required of the reader. The notion of a generalized polygon is a relatively recent one. But it is one of the most important concepts in incidence geometry. Generalized polygons are the building bricks of Tits buildings. They are the prototypes and precursors of more general geometries such as partial geometries, partial quadrangles, semi-partial ge­ ometries, near...

Generalizing optical geometry

International Nuclear Information System (INIS)

Jonsson, Rickard; Westman, Hans

2006-01-01

We show that by employing the standard projected curvature as a measure of spatial curvature, we can make a certain generalization of optical geometry (Abramowicz M A and Lasota J-P 1997 Class. Quantum Grav. A 14 23-30). This generalization applies to any spacetime that admits a hypersurface orthogonal shearfree congruence of worldlines. This is a somewhat larger class of spacetimes than the conformally static spacetimes assumed in standard optical geometry. In the generalized optical geometry, which in the generic case is time dependent, photons move with unit speed along spatial geodesics and the sideways force experienced by a particle following a spatially straight line is independent of the velocity. Also gyroscopes moving along spatial geodesics do not precess (relative to the forward direction). Gyroscopes that follow a curved spatial trajectory precess according to a very simple law of three-rotation. We also present an inertial force formalism in coordinate representation for this generalization. Furthermore, we show that by employing a new sense of spatial curvature (Jonsson R 2006 Class. Quantum Grav. 23 1)) closely connected to Fermat's principle, we can make a more extensive generalization of optical geometry that applies to arbitrary spacetimes. In general this optical geometry will be time dependent, but still geodesic photons move with unit speed and follow lines that are spatially straight in the new sense. Also, the sideways experienced (comoving) force on a test particle following a line that is straight in the new sense will be independent of the velocity

The generalized Q-S synchronization between the generalized Lorenz canonical form and the Roessler system

International Nuclear Information System (INIS)

Yang Yunqing; Chen Yong

2009-01-01

In this paper, we investigate the generalized Q-S synchronization between the generalized Lorenz canonical form and the Roessler system. Firstly, we transform an arbitrary generalized Lorenz system to the generalized Lorenz canonical form, and the relation between the parameter of the generalized Lorenz system and the parameter of the generalized Lorenz canonical form are shown. Secondly, we extend the scheme present by [Yan ZY. Chaos 2005;15:023902] to study the generalized Q-S synchronization between the generalized Lorenz canonical form and the Roessler system, the more general controller is obtained. By choosing different parameter in the generalized controller obtained here, without much extra effort, we can get the controller of synchronization between the Chen system and the Roessler system, the Lue system and the Roessler system, the classic Lorenz system and the Roessler system, the Hyperbolic Lorenz system and the Roessler system, respectively. Finally, numerical simulations are used to perform such synchronization and verify the effectiveness of the controller.

General conclusions

International Nuclear Information System (INIS)

Tubiana, M.

1993-01-01

In conclusion, a general consensus of a number of points which the author endeavours to summarize in this article: -doctors are an excellent channel for passing on information to the public -doctors feel that they do not know enough about the subject and a training on radiobiology and radiation protection is a necessity for them -communication between doctors and the general public is poor in this field -research should be encouraged in numerous areas such as: carcinogenic effect of low doses of radiation, pedagogy and risk perception

General game playing

CERN Document Server

Genesereth, Michael

2014-01-01

General game players are computer systems able to play strategy games based solely on formal game descriptions supplied at ""runtime"" (n other words, they don't know the rules until the game starts). Unlike specialized game players, such as Deep Blue, general game players cannot rely on algorithms designed in advance for specific games; they must discover such algorithms themselves. General game playing expertise depends on intelligence on the part of the game player and not just intelligence of the programmer of the game player.GGP is an interesting application in its own right. It is intell

Forces in General Relativity

Science.gov (United States)

Ridgely, Charles T.

2010-01-01

Many textbooks dealing with general relativity do not demonstrate the derivation of forces in enough detail. The analyses presented herein demonstrate straightforward methods for computing forces by way of general relativity. Covariant divergence of the stress-energy-momentum tensor is used to derive a general expression of the force experienced…

Generalized Hardy's Paradox

Science.gov (United States)

Jiang, Shu-Han; Xu, Zhen-Peng; Su, Hong-Yi; Pati, Arun Kumar; Chen, Jing-Ling

2018-01-01

Here, we present the most general framework for n -particle Hardy's paradoxes, which include Hardy's original one and Cereceda's extension as special cases. Remarkably, for any n ≥3 , we demonstrate that there always exist generalized paradoxes (with the success probability as high as 1 /2n -1) that are stronger than the previous ones in showing the conflict of quantum mechanics with local realism. An experimental proposal to observe the stronger paradox is also presented for the case of three qubits. Furthermore, from these paradoxes we can construct the most general Hardy's inequalities, which enable us to detect Bell's nonlocality for more quantum states.

General pathologist-helper: The new medical app about general pathology.

Science.gov (United States)

Fernández-Vega, Iván

2015-01-01

Smartphone applications (apps) have become increasingly prevalent in medicine. Due to most pathologists, pathology trainees, technicians, and medical students use smartphones; apps can be a different way for general pathology education. "General pathologist-helper (GP-HELPER)" is a novel app developed as a reference tool in general pathology and especially for general pathologists, developed for Android and iOS platforms. "GP-HELPER," was created using Mobincube website platform. This tool also integrates "FORUM GP-HELPER," an external website created using Miarroba website (http://forum-gp-helper.mboards.com) and "COMMUNITY GP-HELPER" a multichannel chat created using Chatango website platform. The application was released in July 2015, and it is been periodically updated since then. The app has permanent information (offline data) about different pathology protocols (TNM latest edition, protocols regarding management of tumors of unknown primary origin, and flowcharts for some of the most difficult tumors to diagnose) and a database with more than 5000 immunohistochemistry results from different tumors. Online data have links to more than 1100 reference pathology video lectures, 250 antibodies information, more than 70 pathology association websites, 46 pathology providers, and 78 outstanding pathology journal websites. Besides this information, the app has two interactive places such as "FORUM GP-HELPER" and "COMMUNITY GP-HELPER" that let users to stay in touch everywhere and every time. Expert consult section is also available. "GP-HELPER" pretends to integrate offline and online data about pathology with two interactive external places in order to represent a reference tool for general pathologists and associate members.

40 CFR 1.21 - General.

Science.gov (United States)

2010-07-01

... other national and international governmental organizations; (c) The Office of Inspector General; (d... 40 Protection of Environment 1 2010-07-01 2010-07-01 false General. 1.21 Section 1.21 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL STATEMENT OF ORGANIZATION AND GENERAL...

Generalized gravity from modified DFT

International Nuclear Information System (INIS)

Sakatani, Yuho; Uehara, Shozo; Yoshida, Kentaroh

2017-01-01

Recently, generalized equations of type IIB supergravity have been derived from the requirement of classical kappa-symmetry of type IIB superstring theory in the Green-Schwarz formulation. These equations are covariant under generalized T-duality transformations and hence one may expect a formulation similar to double field theory (DFT). In this paper, we consider a modification of the DFT equations of motion by relaxing a condition for the generalized covariant derivative with an extra generalized vector. In this modified double field theory (mDFT), we show that the flatness condition of the modified generalized Ricci tensor leads to the NS-NS part of the generalized equations of type IIB supergravity. In particular, the extra vector fields appearing in the generalized equations correspond to the extra generalized vector in mDFT. We also discuss duality symmetries and a modification of the string charge in mDFT.

Generalized gravity from modified DFT

Energy Technology Data Exchange (ETDEWEB)

Sakatani, Yuho [Department of Physics, Kyoto Prefectural University of Medicine,Kyoto 606-0823 (Japan); Fields, Gravity and Strings, CTPU,Institute for Basic Sciences, Daejeon 34047 (Korea, Republic of); Uehara, Shozo [Department of Physics, Kyoto Prefectural University of Medicine,Kyoto 606-0823 (Japan); Yoshida, Kentaroh [Department of Physics, Kyoto University,Kitashirakawa Oiwake-cho, Kyoto 606-8502 (Japan)

2017-04-20

Recently, generalized equations of type IIB supergravity have been derived from the requirement of classical kappa-symmetry of type IIB superstring theory in the Green-Schwarz formulation. These equations are covariant under generalized T-duality transformations and hence one may expect a formulation similar to double field theory (DFT). In this paper, we consider a modification of the DFT equations of motion by relaxing a condition for the generalized covariant derivative with an extra generalized vector. In this modified double field theory (mDFT), we show that the flatness condition of the modified generalized Ricci tensor leads to the NS-NS part of the generalized equations of type IIB supergravity. In particular, the extra vector fields appearing in the generalized equations correspond to the extra generalized vector in mDFT. We also discuss duality symmetries and a modification of the string charge in mDFT.

Comment on 'Generalization of the Darboux transformation and generalized harmonic oscillators'

International Nuclear Information System (INIS)

Schulze-Halberg, Axel

2005-01-01

The authors Song and Klauder (2003 J. Phys. A: Math. Gen. 36 8673-84) present a generalized Darboux transformation, applicable to Hamiltonians with linear terms in the momentum. We show here that this generalized Darboux transformation is just the standard Darboux transformation in different coordinates. (comment)

Response to emotional expressions in generalized social phobia and generalized anxiety disorder: evidence for separate disorders.

Science.gov (United States)

Blair, Karina; Shaywitz, Jonathan; Smith, Bruce W; Rhodes, Rebecca; Geraci, Marilla; Jones, Matthew; McCaffrey, Daniel; Vythilingam, Meena; Finger, Elizabeth; Mondillo, Krystal; Jacobs, Madeline; Charney, Dennis S; Blair, R J R; Drevets, Wayne C; Pine, Daniel S

2008-09-01

Generalized social phobia involves fear/avoidance, specifically of social situations, whereas generalized anxiety disorder involves intrusive worry about diverse circumstances. It remains unclear the degree to which these two, often comorbid, conditions represent distinct disorders or alternative presentations of a single, core underlying pathology. Functional magnetic resonance imaging assessed the neural response to facial expressions in generalized social phobia and generalized anxiety disorder. Individuals matched on age, IQ, and gender with generalized social phobia without generalized anxiety disorder (N=17), generalized anxiety disorder (N=17), or no psychopathology (N=17) viewed neutral, fearful, and angry expressions while ostensibly making a simple gender judgment. The patients with generalized social phobia without generalized anxiety disorder showed increased activation to fearful relative to neutral expressions in several regions, including the amygdala, compared to healthy individuals. This increased amygdala response related to self-reported anxiety in patients with generalized social phobia without generalized anxiety disorder. In contrast, patients with generalized anxiety disorder showed significantly less activation to fearful relative to neutral faces compared to the healthy individuals. They did show significantly increased response to angry expressions relative to healthy individuals in a lateral region of the middle frontal gyrus. This increased lateral frontal response related to self-reported anxiety in patients with generalized anxiety disorder. These results suggest that neural circuitry dysfunctions differ in generalized social phobia and generalized anxiety disorder.

Generalized sampling in Julia

DEFF Research Database (Denmark)

Jacobsen, Christian Robert Dahl; Nielsen, Morten; Rasmussen, Morten Grud

2017-01-01

Generalized sampling is a numerically stable framework for obtaining reconstructions of signals in different bases and frames from their samples. For example, one can use wavelet bases for reconstruction given frequency measurements. In this paper, we will introduce a carefully documented toolbox...... for performing generalized sampling in Julia. Julia is a new language for technical computing with focus on performance, which is ideally suited to handle the large size problems often encountered in generalized sampling. The toolbox provides specialized solutions for the setup of Fourier bases and wavelets....... The performance of the toolbox is compared to existing implementations of generalized sampling in MATLAB....

Mujer y violencia: ¿un problema de salud comunitario?

Directory of Open Access Journals (Sweden)

Alexis Culay Pérez

2000-10-01

Full Text Available Se realizó un estudio descriptivo transversal con el objetivo de conocer el comportamiento de la violencia contra la mujer en el microdistrito "Ignacio Agramonte", perteneciente al policlínico docente "Tula Aguilera" del municipio Camagüey, en el período comprendido desde el 1° de agosto de 1997 al 31 de enero de 1998. De un universo de 1088 mujeres entre 15 y 49 años se le realizó una encuesta a 310 mujeres - el tamaño de la encuesta se calculó utilizando el programa estadístico nombrado EPIDAT- resultando que 226 mujeres reportaron algún tipo de violencia para un 72,9 %. Se concluyó que la violencia psicológica fue reportada por la mitad de las mujeres, la violencia sexual por una 3ra parte y la violencia física fue la menos reportada. La violencia fue mayormente señalada por mujeres de 30-39 años con un nivel de escolaridad pre-universitario. La gran mayoría de las mujeres violentadas no solicitaron ayuda profesionalA descriptive cross-sectional study was conducted aimed at knowing the behaviour of violence against women at the "Ignacio Agramonte" microdistrict belonging to the "Tula Aguilera" Teaching Polyclinic, in the municipality of Camagüey, from August lst, 1997, to January 3lst, 1998. Of a universe of 1 088 women aged 15-49, 310 were surveyed. The size of the survey was calculated by using the EDIPAT statistical program. 226 women reported some type of violence, accounting for 72,9%. It was concluded that psychological violence was reported by half of the women, sexual violence by a third, and that physical violence was the ess reported. Violence was mostly reported by women aged 30-39 with a preuniversitary educational level. Most of the battered women did not ask for professional help

Efectividad de las técnicas participativas en los conocimientos de adolescentes sobre enfermedades de transmisión sexual

Directory of Open Access Journals (Sweden)

Tania García Hernández

1999-01-01

Full Text Available Se realiza un estudio de intervención sobre el grado de conocimiento que tienen los adolescentes de las enfermedades de transmisión sexual y la efectividad de las Técnicas Participativas en sus conocimientos. Se escogió un universo de trabajo de 40 alumnos de un grupo de 9no. grado de la Secundaria Básica "Esteban Borrero Hechevarría", que pertenecen al área de salud "Tula Aguilera" de la ciudad de Camagüey, en el período comprendido desde el 1ro. de septiembre de 1996 al 28 de febrero de 1997. Al iniciar la investigación y realizar el primer corte, el 80,0 % de los alumnos tuvieron evaluaciones de regular o mal sobre los conocimientos de las enfermedades de transmisión sexual. Al finalizar las clases y volver a evaluarlos hubo una inversión de los resultados con el 100,0 % de resultados positivos. Se concluye dando respuesta a la hipótesis de que las técnicas participativas son un arma que tiene el Médico de la Familia para ofrecer a los adolescentes aspectos esenciales que deben conocer sobre las enfermedades de transmisión sexual.An intervention study conducted to determine what adolescents know about sexually transmitted diseases, and the effectiveness of the participation techniques on their knowledge. 40 9th-grade students from the "Esteban Borrero Echevarria" Secondary Basic School corresponding to "Tula Aguilera" health area, in the city of Camagüey, were selected from September, 1996, to February, 1997, to be included in the working universe. At the beginning of the investigation 80 % of the students evaluated on the topic of sexually transmitted diseases got fair or poor marks. However, at the end of classes they were reevaluated and the results were 100 % positive. To conclude, an answer is given to the hypothesis tath the participation techniques are a tool family physicians have to offer adolescents essential aspects they should know about sexually transmitted diseases.

VOCATIONAL AND PATRIOTIC EDUCATION OF STUDENTS OF DEFENSE SPECIALTIES AT A TECHNICAL UNIVERSITY

Directory of Open Access Journals (Sweden)

N. P. Ustinova

2016-01-01

of students of defense specialties at Izhevsk State Technical University named after M. T. Kalashnikov (Izhevsk, Tula State University (Tula, Kovrov State Technological Academy named after V. A. Degtjarjov (Kovrov, Ryazan Higher Airborne Command School named after V. F. Margelov (Ryazan.

Comportamiento del riesgo preconcepcional

Directory of Open Access Journals (Sweden)

Jesús L Regueira Naranjo

1998-04-01

Full Text Available Se realiza un estudio analítico de casos y controles 1 x 1 sobre el comportamiento del riesgo preconcepcional en 35 consultorios, pertenecientes al Policlínico Comunitario Docente "Tula Aguilera", del Municipio Camagüey. El grupo estudio estuvo constituido por las mujeres con riesgo preconcepcional que concibieron un embarazo y fueron captadas en el período desde el 1ro. de enero al 30 de junio de 1994. El grupo control se constituyó con mujeres sin antecedentes de riesgo preconcepcional y que fueron captadas en igual período y la misma área de salud. Los resultados más notables fueron: como riesgo biológico la desnutrición materna III-IV con el 36,76 %, la anemia con el 48,52 %, la sepsis urinaria con el 25 % y la vaginal con 22,79 %. Se demostró la hipótesis de que los niños nacidos de madres con riesgo preconcepcional y obstétrico están expuestos a tener una mayor morbilidad y mortalidad perinatal que los recién nacidos de madres sin riesgo con un embarazo normalAn analytical 1-1 case-control study on the preconceptional risk behaviour in 35 physicians'offices from «Tula Aguilera» community teaching polyclinic located in Camagüey municipality was performed. The group was made up of women with preconceptional risk who got pregnant and were followed-up from January 1st to June 30th, 1994. The control group was formed by women without preconceptional risk history and who were followed-up in the same period of time and in the same health area. The most out-standing results as to biological risks were: maternal malnutrition III-IV, 36.76 %; anemia, 48.52 %; urinary tract infection; 25 % , and vaginal infection, 22.79 %. The hypotesis that infants born from mothers with preconceptional and obstetric risks are exposed to higher perinatal mortality and morbility risks than those from riskless mothers with a normal pregnancy was proved

Efectividad de las técnicas participativas en los conocimientos sobre el sida en adolescentes

Directory of Open Access Journals (Sweden)

Tania García Hernández

2000-10-01

Full Text Available Se realizó un estudio de intervención sobre el grado de conocimiento que tienen los adolescentes del síndrome de inmunodeficiencia adquirida y la efectividad de las técnicas participativas en sus conocimientos. Se escogió como universo de trabajo un grupo de 9no. grado (40 alumnos de la Secundaria Básica "Esteban Borrero Hecheverría" perteneciente al área de salud "Tula Aguilera" de la ciudad de Camagüey, en el período comprendido desde el 1ro. de septiembre de 1996 hasta el 28 de febrero de 1997. Al iniciar la investigación, y realizar el primer corte, el 80 % de los alumnos tuvieron evaluaciones de regular o mal sobre los conocimientos del SIDA. Al finalizar las clases y volver a evaluarlos hubo una inversión de los resultados con el 100 % de resultados positivos. Se concluye dando respuesta a la hipótesis de que las técnicas participativas son un arma que tiene el Médico de la Familia en su poder para ofrecer a los adolescentes aspectos esenciales que sobre esta enfermedad deben conocerAn intervention study on the degree of knowledge of the adolescents about AIDS and the effectiveness of the participative techniques in their knowledge was conducted. A group of 40 9th-grade students from "Esteban Borrero Hechevarría" Secondary Basic School corresponding to "Tula Aguilera" health area, in the city of Camagüey, was selected to take part in this study from September 1, 1996, to February 28, 1997. On initiating the research and having the first cut-off, 80% of the students had fair or bad evaluations in relation to the knowledge of AIDS. When the classes finished, they were evaluated again and the results changed, since 100 % of them were positive. To conclude, an answer is given to the hypothesis that participative techniques are a tool the family physician may use to explain to the adolescents essential aspects they should know about this disease

The generalized second law of thermodynamics in generalized gravity theories

International Nuclear Information System (INIS)

Wu Shaofeng; Yang Guohong; Wang Bin; Zhang Pengming

2008-01-01

We investigate the generalized second law of thermodynamics (GSL) in generalized theories of gravity. We examine the total entropy evolution with time including the horizon entropy, the non-equilibrium entropy production, and the entropy of all matter, field and energy components. We derive a universal condition to protect the generalized second law and study its validity in different gravity theories. In Einstein gravity (even in the phantom-dominated universe with a Schwarzschild black hole), Lovelock gravity and braneworld gravity, we show that the condition to keep the GSL can always be satisfied. In f(R) gravity and scalar-tensor gravity, the condition to protect the GSL can also hold because the temperature should be positive, gravity is always attractive and the effective Newton constant should be an approximate constant satisfying the experimental bounds

Generalization of stochastic visuomotor rotations.

Directory of Open Access Journals (Sweden)

Hugo L Fernandes

Full Text Available Generalization studies examine the influence of perturbations imposed on one movement onto other movements. The strength of generalization is traditionally interpreted as a reflection of the similarity of the underlying neural representations. Uncertainty fundamentally affects both sensory integration and learning and is at the heart of many theories of neural representation. However, little is known about how uncertainty, resulting from variability in the environment, affects generalization curves. Here we extend standard movement generalization experiments to ask how uncertainty affects the generalization of visuomotor rotations. We find that although uncertainty affects how fast subjects learn, the perturbation generalizes independently of uncertainty.

Kerr generalized solution

International Nuclear Information System (INIS)

Papoyan, V.V.

1989-01-01

A Kerr generalized solution for a stationary axially-symmetric gravitational field of rotating self-gravitational objects is given. For solving the problem Einstein equations and their combinations are used. The particular cases: internal and external Schwarzschild solutions are considered. The external solution of the stationary problem is a Kerr solution generalization. 3 refs

Bimetric general relativity

International Nuclear Information System (INIS)

Rosen, N.

1979-01-01

A modification of general relativity is proposed involving a second metric tensor describing a space-time of constant curvature and associated with the fundamental rest-frame of the universe. The theory generally agrees with the Einstein theory, but gives cosmological models without singularities which can account for present observation, including helium abundance

Generalized elementary functions

Czech Academy of Sciences Publication Activity Database

Monteiro, Giselle Antunes; Slavík, A.

2014-01-01

Roč. 411, č. 2 (2014), s. 838-852 ISSN 0022-247X Institutional support: RVO:67985840 Keywords : elementary functions * Kurzweil-Stieltjes integral * generalized linear ordinary differential equations * time scale calculus Subject RIV: BA - General Mathematics Impact factor: 1.120, year: 2014 http://www.sciencedirect.com/science/article/pii/S0022247X13009141

2008 Contruction General Permits & Multi-Sector General Permits

Data.gov (United States)

U.S. Environmental Protection Agency — View stormwater notices of intent (NOIs) for construction projects under EPA's 2008 Construction General Permit (CGP), for Low Erosivity Waivers (LEWs) submitted...

21 CFR 1000.1 - General.

Science.gov (United States)

2010-04-01

... 21 Food and Drugs 8 2010-04-01 2010-04-01 false General. 1000.1 Section 1000.1 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) RADIOLOGICAL HEALTH GENERAL General Provisions § 1000.1 General. References in this subchapter J to regulatory sections of the...

General pathologist-helper: The new medical app about general pathology

Directory of Open Access Journals (Sweden)

Iván Fernandez-Vega

2015-01-01

Full Text Available Introduction: Smartphone applications (apps have become increasingly prevalent in medicine. Due to most pathologists, pathology trainees, technicians, and medical students use smartphones; apps can be a different way for general pathology education. “General pathologist-helper (GP-HELPER” is a novel app developed as a reference tool in general pathology and especially for general pathologists, developed for Android and iOS platforms. Materials and Methods: “GP-HELPER,” was created using Mobincube website platform. This tool also integrates “FORUM GP-HELPER,” an external website created using Miarroba website (http://forum-gp-helper.mboards.com and “COMMUNITY GP-HELPER” a multichannel chat created using Chatango website platform. Results: The application was released in July 2015, and it is been periodically updated since then. The app has permanent information (offline data about different pathology protocols (TNM latest edition, protocols regarding management of tumors of unknown primary origin, and flowcharts for some of the most difficult tumors to diagnose and a database with more than 5000 immunohistochemistry results from different tumors. Online data have links to more than 1100 reference pathology video lectures, 250 antibodies information, more than 70 pathology association websites, 46 pathology providers, and 78 outstanding pathology journal websites. Besides this information, the app has two interactive places such as “FORUM GP-HELPER” and “COMMUNITY GP-HELPER” that let users to stay in touch everywhere and every time. Expert consult section is also available. Conclusions: “GP-HELPER” pretends to integrate offline and online data about pathology with two interactive external places in order to represent a reference tool for general pathologists and associate members.

Oxygen general saturation after bronchography under general ...

African Journals Online (AJOL)

Thirty-six patients undergoing bronchography or bronchoscopy under general anaesthesia were continuously monitored by pulse oximetry for 5 hours after these procedures. Significant falls in oxygen saturation were observed in the first hour and were of most clinical relevance in patients with preexisting pulmonary ...

28 CFR 0.165 - Recommendations to the Deputy Attorney General or Associate Attorney General, as appropriate...

Science.gov (United States)

2010-07-01

... General or Associate Attorney General, as appropriate, that certain claims be closed. 0.165 Section 0.165... Recommendations to the Deputy Attorney General or Associate Attorney General, as appropriate, that certain claims... the authority delegated by §§ 0.160(a) and 0.164, the Assistant Attorney General concerned shall, when...

Impacto socioambiental de la industria petrolera en Tabasco: el caso de la Chontalpa

Directory of Open Access Journals (Sweden)

Manuel Jesús Pinkus Rendón

2012-07-01

Full Text Available Esta investigación tiene el objetivo de valorar los impactos ambientales, económicos, sociales y políticos derivados de las actividades de Petróleos Mexicanos en cuatro poblaciones del estado de Tabasco. Se enmarca en la dinámica social comunitaria derivada de las actividades de la petrolera para conocer cómo afectan a los habitantes las relaciones con PEMEX y con los gobiernos locales. Partimos de la hipótesis de que el deterioro ambiental debe analizarse considerando las transformaciones que la política económica neoliberal está generando en el país, y en especial en el ámbito local, a partir de los años ochenta del siglo XX.

Explaining Compound Generalization in Associative and Causal Learning Through Rational Principles of Dimensional Generalization

Science.gov (United States)

Soto, Fabian A.; Gershman, Samuel J.; Niv, Yael

2014-01-01

How do we apply learning from one situation to a similar, but not identical, situation? The principles governing the extent to which animals and humans generalize what they have learned about certain stimuli to novel compounds containing those stimuli vary depending on a number of factors. Perhaps the best studied among these factors is the type of stimuli used to generate compounds. One prominent hypothesis is that different generalization principles apply depending on whether the stimuli in a compound are similar or dissimilar to each other. However, the results of many experiments cannot be explained by this hypothesis. Here we propose a rational Bayesian theory of compound generalization that uses the notion of consequential regions, first developed in the context of rational theories of multidimensional generalization, to explain the effects of stimulus factors on compound generalization. The model explains a large number of results from the compound generalization literature, including the influence of stimulus modality and spatial contiguity on the summation effect, the lack of influence of stimulus factors on summation with a recovered inhibitor, the effect of spatial position of stimuli on the blocking effect, the asymmetrical generalization decrement in overshadowing and external inhibition, and the conditions leading to a reliable external inhibition effect. By integrating rational theories of compound and dimensional generalization, our model provides the first comprehensive computational account of the effects of stimulus factors on compound generalization, including spatial and temporal contiguity between components, which have posed longstanding problems for rational theories of associative and causal learning. PMID:25090430

General practice registrars' views on maternity care in general practice in New Zealand.

Science.gov (United States)

Preston, Hanna; Jaye, Chrystal; Miller, Dawn L

2015-12-01

The number of general practitioners (GPs) providing maternity care in New Zealand has declined dramatically since legislative changes of the 1990s. The Ministry of Health wants GPs to provide maternity care again. To investigate New Zealand general practice registrars' perspectives on GPs' role in maternity care; specifically, whether maternity services should be provided by GPs, registrars' preparedness to provide such services, and training opportunities available or required to achieve this. An anonymous online questionnaire was distributed to all registrars enrolled in The Royal New Zealand College of General Practitioners' (RNZCGP's) General Practice Education Programme (GPEP) in 2012, via their online learning platform OWL. 165 of the 643 general practice registrars responded (25.7% response rate). Most (95%) believe that GPs interested and trained in maternity care should consider providing antenatal, postnatal or shared care with midwives, and 95% believe women should be able to access maternity care from their general practice. When practising as a GP, 90% would consider providing antenatal and postnatal care, 47.3% shared care, and 4.3% full pregnancy care. Professional factors including training and adequate funding were most important when considering providing maternity care as a GP. Ninety-five percent of general practice registrars who responded to our survey believe that GPs should provide some maternity services, and about 90% would consider providing maternity care in their future practice. Addressing professional issues of training, support and funding are essential if more GPs are to participate in maternity care in New Zealand.

Methodological practicalities in analytical generalization

DEFF Research Database (Denmark)

Halkier, Bente

2011-01-01

generalization. Theoretically, the argumentation in the article is based on practice theory. The main part of the article describes three different examples of ways of generalizing on the basis of the same qualitative data material. There is a particular focus on describing the methodological strategies......In this article, I argue that the existing literature on qualitative methodologies tend to discuss analytical generalization at a relatively abstract and general theoretical level. It is, however, not particularly straightforward to “translate” such abstract epistemological principles into more...... operative methodological strategies for producing analytical generalizations in research practices. Thus, the aim of the article is to contribute to the discussions among qualitatively working researchers about generalizing by way of exemplifying some of the methodological practicalities in analytical...

General quantum variational calculus

Directory of Open Access Journals (Sweden)

Artur M. C. Brito da Cruz

2018-02-01

Full Text Available We develop a new variational calculus based in the general quantum difference operator recently introduced by Hamza et al. In particular, we obtain optimality conditions for generalized variational problems where the Lagrangian may depend on the endpoints conditions and a real parameter, for the basic and isoperimetric problems, with and without fixed boundary conditions. Our results provide a generalization to previous results obtained for the $q$- and Hahn-calculus.

Generalized quasi variational inequalities

Energy Technology Data Exchange (ETDEWEB)

Noor, M.A. [King Saud Univ., Riyadh (Saudi Arabia)

1996-12-31

In this paper, we establish the equivalence between the generalized quasi variational inequalities and the generalized implicit Wiener-Hopf equations using essentially the projection technique. This equivalence is used to suggest and analyze a number of new iterative algorithms for solving generalized quasi variational inequalities and the related complementarity problems. The convergence criteria is also considered. The results proved in this paper represent a significant improvement and refinement of the previously known results.

21 CFR 610.11 - General safety.

Science.gov (United States)

2010-04-01

... 21 Food and Drugs 7 2010-04-01 2010-04-01 false General safety. 610.11 Section 610.11 Food and... GENERAL BIOLOGICAL PRODUCTS STANDARDS General Provisions § 610.11 General safety. A general safety test... for administration to humans. The general safety test is required in addition to other specific tests...

Video-assisted feedback in general practice internships using German general practitioner's guidelines

NARCIS (Netherlands)

Bolter, R.; Freund, T.; Ledig, T.; Boll, B.; Szecsenyi, J.; Roos, M.

2012-01-01

Introduction: The planned modification of the Medical Licenses Act in Germany will strengthen the specialty of general practice. Therefore, medical students should get to know the daily routine of general practitioners during their academic studies. At least 10% of students should get the

Transmuted Generalized Inverse Weibull Distribution

OpenAIRE

Merovci, Faton; Elbatal, Ibrahim; Ahmed, Alaa

2013-01-01

A generalization of the generalized inverse Weibull distribution so-called transmuted generalized inverse Weibull dis- tribution is proposed and studied. We will use the quadratic rank transmutation map (QRTM) in order to generate a flexible family of probability distributions taking generalized inverse Weibull distribution as the base value distribution by introducing a new parameter that would offer more distributional flexibility. Various structural properties including explicit expression...

Generalization of concurrence vectors

International Nuclear Information System (INIS)

Yu Changshui; Song Heshan

2004-01-01

In this Letter, based on the generalization of concurrence vectors for bipartite pure state with respect to employing tensor product of generators of the corresponding rotation groups, we generalize concurrence vectors to the case of mixed states; a new criterion of separability of multipartite pure states is given out, for which we define a concurrence vector; we generalize the vector to the case of multipartite mixed state and give out a good measure of free entanglement

Generalized vector calculus on convex domain

Science.gov (United States)

Agrawal, Om P.; Xu, Yufeng

2015-06-01

In this paper, we apply recently proposed generalized integral and differential operators to develop generalized vector calculus and generalized variational calculus for problems defined over a convex domain. In particular, we present some generalization of Green's and Gauss divergence theorems involving some new operators, and apply these theorems to generalized variational calculus. For fractional power kernels, the formulation leads to fractional vector calculus and fractional variational calculus for problems defined over a convex domain. In special cases, when certain parameters take integer values, we obtain formulations for integer order problems. Two examples are presented to demonstrate applications of the generalized variational calculus which utilize the generalized vector calculus developed in the paper. The first example leads to a generalized partial differential equation and the second example leads to a generalized eigenvalue problem, both in two dimensional convex domains. We solve the generalized partial differential equation by using polynomial approximation. A special case of the second example is a generalized isoperimetric problem. We find an approximate solution to this problem. Many physical problems containing integer order integrals and derivatives are defined over arbitrary domains. We speculate that future problems containing fractional and generalized integrals and derivatives in fractional mechanics will be defined over arbitrary domains, and therefore, a general variational calculus incorporating a general vector calculus will be needed for these problems. This research is our first attempt in that direction.

New general relativity

International Nuclear Information System (INIS)

Hayashi, K.; Shirafuji, T.

1979-01-01

A gravitational theory is formulated on the Weitzenboeck space-time, characterized by the vanishing curvature tensor (absolute parallelism) and by the torsion tensor formed of four parallel vector fields. This theory is called new general relativity, since Einstein in 1928 first gave its original form. New general relativity has three parameters c 1 , c 2 , and lambda, besides the Einstein constant kappa. In this paper we choose c 1 = 0 = c 2 , leaving open lambda. We prove, among other things, that (i) a static, spherically symmetric gravitational field is given by the Schwarzschild metric, that (ii) in the weak-field approximation an antisymmetric field of zero mass and zero spin exists, besides gravitons, and that (iii) new general relativity agrees with all the experiments so far carried out

Generalized isothermic lattices

International Nuclear Information System (INIS)

Doliwa, Adam

2007-01-01

We study multi-dimensional quadrilateral lattices satisfying simultaneously two integrable constraints: a quadratic constraint and the projective Moutard constraint. When the lattice is two dimensional and the quadric under consideration is the Moebius sphere one obtains, after the stereographic projection, the discrete isothermic surfaces defined by Bobenko and Pinkall by an algebraic constraint imposed on the (complex) cross-ratio of the circular lattice. We derive the analogous condition for our generalized isothermic lattices using Steiner's projective structure of conics, and we present basic geometric constructions which encode integrability of the lattice. In particular, we introduce the Darboux transformation of the generalized isothermic lattice and we derive the corresponding Bianchi permutability principle. Finally, we study two-dimensional generalized isothermic lattices, in particular geometry of their initial boundary value problem

Lectures on general relativity

CERN Document Server

Papapetrou, Achille

1974-01-01

This book is an elaboration of lecture notes for the graduate course on General Rela­ tivity given by the author at Boston University in the spring semester of 1972. It is an introduction to the subject only, as the time available for the course was limited. The author of an introduction to General Relativity is faced from the beginning with the difficult task of choosing which material to include. A general criterion as­ sisting in this choice is provided by the didactic character of the book: Those chapters have to be included in priority, which will be most useful to the reader in enabling him to understand the methods used in General Relativity, the results obtained so far and possibly the problems still to be solved. This criterion is not sufficient to ensure a unique choice. General Relativity has developed to such a degree, that it is impossible to include in an introductory textbook of a reasonable length even a very condensed treatment of all important problems which have been discussed unt...

Generalized Identities Involving Common Factors of Generalized Fibonacci, Jacobsthal and Jacobsthal-Lucas Numbers

Directory of Open Access Journals (Sweden)

Yashwant K. Panwar

2013-08-01

Full Text Available In this paper, we present generalized identities involving common factors of generalized Fibonacci, Jacobsthal and jacobsthal-Lucas numbers. Binet’s formula will employ to obtain the identities.

Academy of General Dentistry

Science.gov (United States)

... Examine Oral Systemic Health Nov 14, 2017 General Dentistry and American Family Physician Collaborate to Examine Oral ... Oral Health Oct 23, 2017 Academy of General Dentistry Foundation Celebrates 45 Years Raising Awareness for Oral ...

Cancer Investigation in General Practice

DEFF Research Database (Denmark)

Jensen, Jacob Reinholdt; Møller, Henrik; Thomsen, Janus Laust

2014-01-01

Initiation of cancer investigations in general practice Background Close to 90% of all cancers are diagnosed because the patient presents symptoms and signs. Of these patients, 85% initiate the diagnostic pathway in general practice. Therefore, the initiation of a diagnostic pathway in general...... practice becomes extremely important. On average, a general practitioner (GP) is involved in 7500 consultations each year, and in the diagnostic process of 8-10 incident cancers. One half of cancer patients consult their GP with either general symptoms, which are not indicative of cancer, or vague and non......-specific symptoms. The other half present with what the GP assess as alarm symptoms. Three months prior to diagnosis, patients who are later diagnosed with cancer have twice as many GP consultations than a comparable reference population. Thus the complex diagnostic process in general practice requires the GP...

Generalizing smooth transition autoregressions

DEFF Research Database (Denmark)

Chini, Emilio Zanetti

We introduce a variant of the smooth transition autoregression - the GSTAR model - capable to parametrize the asymmetry in the tails of the transition equation by using a particular generalization of the logistic function. A General-to-Specific modelling strategy is discussed in detail, with part......We introduce a variant of the smooth transition autoregression - the GSTAR model - capable to parametrize the asymmetry in the tails of the transition equation by using a particular generalization of the logistic function. A General-to-Specific modelling strategy is discussed in detail......, with particular emphasis on two different LM-type tests for the null of symmetric adjustment towards a new regime and three diagnostic tests, whose power properties are explored via Monte Carlo experiments. Four classical real datasets illustrate the empirical properties of the GSTAR, jointly to a rolling...

42 CFR 1000.10 - General definitions.

Science.gov (United States)

2010-10-01

... 42 Public Health 5 2010-10-01 2010-10-01 false General definitions. 1000.10 Section 1000.10 Public Health OFFICE OF INSPECTOR GENERAL-HEALTH CARE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL PROVISIONS INTRODUCTION; GENERAL DEFINITIONS Definitions § 1000.10 General definitions. In this chapter...

General relativity and mathematics; Relatividad General y Matematicas

Energy Technology Data Exchange (ETDEWEB)

Mars, M.

2015-07-01

General relativity is more than a theory of gravity, since any physical process occupies space and lasts for a time, forcing to reconcile that physical theory that describes what the dynamic nature of space-time itself. (Author)

Generalized Phase Contrast

CERN Document Server

Glückstad, Jesper

2009-01-01

Generalized Phase Contrast elevates the phase contrast technique not only to improve phase imaging but also to cross over and interface with diverse and seemingly disparate fields of contemporary optics and photonics. This book presents a comprehensive introduction to the Generalized Phase Contrast (GPC) method including an overview of the range of current and potential applications of GPC in wavefront sensing and phase imaging, structured laser illumination and image projection, optical trapping and manipulation, and optical encryption and decryption. The GPC method goes further than the restrictive assumptions of conventional Zernike phase contrast analysis and achieves an expanded range of validity beyond weak phase perturbations. The generalized analysis yields design criteria for tuning experimental parameters to achieve optimal performance in terms of accuracy, fidelity and light efficiency. Optimization can address practical issues, such as finding an optimal spatial filter for the chosen application, ...

The Singapore-Cambridge General Certificate of Education Advanced-Level General Paper Examination

Science.gov (United States)

Hassan, Nurul Huda; Shih, Chih-Min

2013-01-01

This article describes and reviews the Singapore-Cambridge General Certificate of Education Advanced Level General Paper (GP) examination. As a written test that is administered to preuniversity students, the GP examination is internationally recognised and accepted by universities and employers as proof of English competence. In this article, the…

Generalizations of orthogonal polynomials

Science.gov (United States)

Bultheel, A.; Cuyt, A.; van Assche, W.; van Barel, M.; Verdonk, B.

2005-07-01

We give a survey of recent generalizations of orthogonal polynomials. That includes multidimensional (matrix and vector orthogonal polynomials) and multivariate versions, multipole (orthogonal rational functions) variants, and extensions of the orthogonality conditions (multiple orthogonality). Most of these generalizations are inspired by the applications in which they are applied. We also give a glimpse of these applications, which are usually generalizations of applications where classical orthogonal polynomials also play a fundamental role: moment problems, numerical quadrature, rational approximation, linear algebra, recurrence relations, and random matrices.

48 CFR 4.801 - General.

Science.gov (United States)

2010-10-01

... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false General. 4.801 Section 4.801 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION GENERAL ADMINISTRATIVE MATTERS Government Contract Files 4.801 General. (a) The head of each office performing contracting...

General relativity basics and beyond

CERN Document Server

Date, Ghanashyam

2015-01-01

A Broad Perspective on the Theory of General Relativity and Its Observable Implications General Relativity: Basics and Beyond familiarizes students and beginning researchers with the basic features of the theory of general relativity as well as some of its more advanced aspects. Employing the pedagogical style of a textbook, it includes essential ideas and just enough background material needed for readers to appreciate the issues and current research. Basics The first five chapters form the core of an introductory course on general relativity. The author traces Einstein’s arguments and presents examples of space-times corresponding to different types of gravitational fields. He discusses the adaptation of dynamics in a Riemannian geometry framework, the Einstein equation and its elementary properties, and different phenomena predicted or influenced by general relativity. Beyond Moving on to more sophisticated features of general relativity, the book presents the physical requirements of a well-defined de...

Comments on general gauge mediation

International Nuclear Information System (INIS)

Intriligator, Kenneth; Sudano, Matthew

2008-01-01

There has been interest in generalizing models of gauge mediation of supersymmetry breaking. As shown by Meade, Seiberg, and Shih (MSS), the soft masses of general gauge mediation can be expressed in terms of the current two-point functions of the susy-breaking sector. We here give a simple extension of their result which provides, for general gauge mediation, the full effective potential for squark pseudo-D-flat directions. The effective potential reduces to the sfermion soft masses near the origin, and the full potential, away from the origin, can be useful for cosmological applications. We also generalize the soft masses and effective potential to allow for general gauge mediation by Higgsed gauge groups. Finally, we discuss general gauge mediation in the limit of small F-terms, and how the results of MSS connect with the analytic continuation in superspace results, based on a spurion analysis.

General problems

International Nuclear Information System (INIS)

2005-01-01

This article presents the general problems as natural disasters, consequences of global climate change, public health, the danger of criminal actions, the availability to information about problems of environment

Advanced mechanics and general relativity an introduction to general relativity

CERN Document Server

Franklin, Joel

2010-01-01

Aimed at advanced undergraduates with background knowledge of classical mechanics and electricity and magnetism, this textbook presents both the particle dynamics relevant to general relativity, and the field dynamics necessary to understand the theory. Focusing on action extremization, the book develops the structure and predictions of general relativity by analogy with familiar physical systems. Topics ranging from classical field theory to minimal surfaces and relativistic strings are covered in a homogeneous manner. Nearly 150 exercises and numerous examples throughout the textbook enable students to test their understanding of the material covered.

Intervals in Generalized Effect Algebras and their Sub-generalized Effect Algebras

Directory of Open Access Journals (Sweden)

Zdenka Riečanová

2013-01-01

Full Text Available We consider subsets G of a generalized effect algebra E with 0∈G and such that every interval [0, q]G = [0, q]E ∩ G of G (q ∈ G , q ≠ 0 is a sub-effect algebra of the effect algebra [0, q]E. We give a condition on E and G under which every such G is a sub-generalized effect algebra of E.

How general are general source conditions?

International Nuclear Information System (INIS)

Mathé, Peter; Hofmann, Bernd

2008-01-01

Error analysis of regularization methods in Hilbert spaces is based on smoothness assumptions in terms of source conditions. In the traditional setup, i.e. when smoothness is in a power scale, we see that not all elements in the underlying Hilbert space possess some smoothness with this scale. Our main result asserts that this can be overcome when turning to general source conditions defined in terms of index functions. We conclude with some consequences

7 CFR 1900.101 - General.

Science.gov (United States)

2010-01-01

... 7 Agriculture 12 2010-01-01 2010-01-01 false General. 1900.101 Section 1900.101 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, RURAL BUSINESS-COOPERATIVE... GENERAL Applicability of Federal Law § 1900.101 General. This subpart provides Agency policy concerning...

7 CFR 1900.52 - General.

Science.gov (United States)

2010-01-01

... 7 Agriculture 12 2010-01-01 2010-01-01 false General. 1900.52 Section 1900.52 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, RURAL BUSINESS-COOPERATIVE... GENERAL Adverse Decisions and Administrative Appeals § 1900.52 General. This subpart specifies procedures...

34 CFR 668.171 - General.

Science.gov (United States)

2010-07-01

... 34 Education 3 2010-07-01 2010-07-01 false General. 668.171 Section 668.171 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION STUDENT ASSISTANCE GENERAL PROVISIONS Financial Responsibility § 668.171 General. (a...

75 FR 67770 - General Motors Company, Formerly Known as General Motors Corporation, Orion Assembly Plant...

Science.gov (United States)

2010-11-03

..., Formerly Known as General Motors Corporation, Orion Assembly Plant, Including On-Site Leased Workers From Aerotek Automotive, Ryder and Premier Manufacturing Support Services, Lake Orion, MI; Amended... of General Motors Company, formerly known as General Motors Corporation, Orion Assembly Plant, Lake...

Generalizing entanglement

Science.gov (United States)

Jia, Ding

2017-12-01

The expected indefinite causal structure in quantum gravity poses a challenge to the notion of entanglement: If two parties are in an indefinite causal relation of being causally connected and not, can they still be entangled? If so, how does one measure the amount of entanglement? We propose to generalize the notions of entanglement and entanglement measure to address these questions. Importantly, the generalization opens the path to study quantum entanglement of states, channels, networks, and processes with definite or indefinite causal structure in a unified fashion, e.g., we show that the entanglement distillation capacity of a state, the quantum communication capacity of a channel, and the entanglement generation capacity of a network or a process are different manifestations of one and the same entanglement measure.

A generalized Yang-Mills Theory I: general aspects of the classical theory

International Nuclear Information System (INIS)

Galvao, C.A.P.

1987-01-01

A generalized Yang-Mills theory which is the non-Abelian version of the generalized eletrodinamics proposed by Podolsky is analysed both in the Lagrangian an Hamiltonian formulation. A simple class of solutions to the Euler-Lagrange equations is presented and the structure of the Hamiltonian constraints is studied in details. (Author) [pt

7 CFR 1900.1 - General.

Science.gov (United States)

2010-01-01

... 7 Agriculture 12 2010-01-01 2010-01-01 false General. 1900.1 Section 1900.1 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, RURAL BUSINESS-COOPERATIVE... GENERAL Delegations of Authority § 1900.1 General. The authorities contained in this subpart apply to all...

Generalized r-Lah numbers

Indian Academy of Sciences (India)

016-0309-0. Generalized r-Lah numbers. MARK SHATTUCK. Department of ...... of Dowling lattices, Discrete Math. 312. (2012) 2337–2348. [7] Hsu L C and Shiue P J-S, A unified approach to generalized Stirling numbers, Adv. Appl. Math.

A generalized nonlocal vector calculus

Science.gov (United States)

Alali, Bacim; Liu, Kuo; Gunzburger, Max

2015-10-01

A nonlocal vector calculus was introduced in Du et al. (Math Model Meth Appl Sci 23:493-540, 2013) that has proved useful for the analysis of the peridynamics model of nonlocal mechanics and nonlocal diffusion models. A formulation is developed that provides a more general setting for the nonlocal vector calculus that is independent of particular nonlocal models. It is shown that general nonlocal calculus operators are integral operators with specific integral kernels. General nonlocal calculus properties are developed, including nonlocal integration by parts formula and Green's identities. The nonlocal vector calculus introduced in Du et al. (Math Model Meth Appl Sci 23:493-540, 2013) is shown to be recoverable from the general formulation as a special example. This special nonlocal vector calculus is used to reformulate the peridynamics equation of motion in terms of the nonlocal gradient operator and its adjoint. A new example of nonlocal vector calculus operators is introduced, which shows the potential use of the general formulation for general nonlocal models.

Generalized exclusion and Hopf algebras

International Nuclear Information System (INIS)

Yildiz, A

2002-01-01

We propose a generalized oscillator algebra at the roots of unity with generalized exclusion and we investigate the braided Hopf structure. We find that there are two solutions: these are the generalized exclusions of the bosonic and fermionic types. We also discuss the covariance properties of these oscillators

33 CFR 20.801 - General.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false General. 20.801 Section 20.801 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL RULES OF PRACTICE, PROCEDURE, AND EVIDENCE FOR FORMAL ADMINISTRATIVE PROCEEDINGS OF THE COAST GUARD Evidence § 20.801 General...

A generalization of Gale's lemma

DEFF Research Database (Denmark)

Alishahi, Meysam; Hajiabolhassan, Hossein

2017-01-01

In this work, we present a generalization of Gale's lemma. Using this generalization, we introduce two sharp combinatorial lower bounds for coind (B0(G)) + 1 andcoind(B(G)) + 2, the two classic topological lower boundsfor the chromatic number of a graph G.......In this work, we present a generalization of Gale's lemma. Using this generalization, we introduce two sharp combinatorial lower bounds for coind (B0(G)) + 1 andcoind(B(G)) + 2, the two classic topological lower boundsfor the chromatic number of a graph G....

General Conformity

Science.gov (United States)

The General Conformity requirements ensure that the actions taken by federal agencies in nonattainment and maintenance areas do not interfere with a state’s plans to meet national standards for air quality.

33 CFR 183.507 - General.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false General. 183.507 Section 183.507 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) BOATING SAFETY BOATS AND ASSOCIATED EQUIPMENT Fuel Systems General § 183.507 General. Each fuel system component on a boat...

D-day Message from General Eisenhower to General Marshall. Teaching with Documents.

Science.gov (United States)

Schamel, Wynell B.; Blondo, Richard A.

1994-01-01

Contends that the D-Day assault on Normandy's beaches in 1944 was critically important to the Allied war effort and ultimately to the security of all nations. Presents a lesson plan based on a message drafted in the early hours of D-Day by General Dwight D. Eisenhower and sent to his superior, General George C. Marshall. (CFR)

General resonance mediation

International Nuclear Information System (INIS)

McGarrie, Moritz

2012-07-01

We extend the framework of general gauge mediation to cases where the mediating fields have a nontrivial spectral function, as might arise from strong dynamics. We demonstrate through examples that this setup describes a broad class of possible models of gauge mediated supersymmetry breaking. A main emphasis is to give general formulas for cross sections for σ(visible → hidden) in these resonance models. We will also give formulas for soft masses, A-terms and demonstrate the framework with a holographic setup.

General resonance mediation

Energy Technology Data Exchange (ETDEWEB)

McGarrie, Moritz

2012-07-15

We extend the framework of general gauge mediation to cases where the mediating fields have a nontrivial spectral function, as might arise from strong dynamics. We demonstrate through examples that this setup describes a broad class of possible models of gauge mediated supersymmetry breaking. A main emphasis is to give general formulas for cross sections for {sigma}(visible {yields} hidden) in these resonance models. We will also give formulas for soft masses, A-terms and demonstrate the framework with a holographic setup.

General Education! Not Again?

Science.gov (United States)

Marsee, Stuart

After reviewing definitions of general education and statements regarding its importance found in the literature, this paper presents observations to be considered in updating or developing general education programs. It is observed that many disciplines have developed excessive departmentalization; that administrators tend to view general…

Fitting statistical distributions the generalized lambda distribution and generalized bootstrap methods

CERN Document Server

Karian, Zaven A

2000-01-01

Throughout the physical and social sciences, researchers face the challenge of fitting statistical distributions to their data. Although the study of statistical modelling has made great strides in recent years, the number and variety of distributions to choose from-all with their own formulas, tables, diagrams, and general properties-continue to create problems. For a specific application, which of the dozens of distributions should one use? What if none of them fit well?Fitting Statistical Distributions helps answer those questions. Focusing on techniques used successfully across many fields, the authors present all of the relevant results related to the Generalized Lambda Distribution (GLD), the Generalized Bootstrap (GB), and Monte Carlo simulation (MC). They provide the tables, algorithms, and computer programs needed for fitting continuous probability distributions to data in a wide variety of circumstances-covering bivariate as well as univariate distributions, and including situations where moments do...

On generalized fractional vibration equation

International Nuclear Information System (INIS)

Dai, Hongzhe; Zheng, Zhibao; Wang, Wei

2017-01-01

Highlights: • The paper presents a generalized fractional vibration equation for arbitrary viscoelastically damped system. • Some classical vibration equations can be derived from the developed equation. • The analytic solution of developed equation is derived under some special cases. • The generalized equation is particularly useful for developing new fractional equivalent linearization method. - Abstract: In this paper, a generalized fractional vibration equation with multi-terms of fractional dissipation is developed to describe the dynamical response of an arbitrary viscoelastically damped system. It is shown that many classical equations of motion, e.g., the Bagley–Torvik equation, can be derived from the developed equation. The Laplace transform is utilized to solve the generalized equation and the analytic solution under some special cases is derived. Example demonstrates the generalized transfer function of an arbitrary viscoelastic system.

Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I

Directory of Open Access Journals (Sweden)

Rassias JM

2009-01-01

Full Text Available We discuss the superstability of generalized module left derivations and generalized module derivations on a Banach module. Let be a Banach algebra and a Banach -module, and . The mappings , and are defined and it is proved that if (resp., is dominated by then is a generalized (resp., linear module- left derivation and is a (resp., linear module- left derivation. It is also shown that if (resp., is dominated by then is a generalized (resp., linear module- derivation and is a (resp., linear module- derivation.

General edition program

International Nuclear Information System (INIS)

Vaturi, Sylvain

1969-01-01

Computerized edition is essential for data processing exploitation. When a more or less complex edition program is required for each task, then the need for a general edition program become obvious. The aim of this study is to create a general edition program. Universal programs are capable to execute numerous and varied tasks. For a more precise processing, the execution of which is frequently required, the use of a specialized program is preferable because, contradictory to the universal program, it goes straight to the point [fr

General Rytov approximation.

Science.gov (United States)

Potvin, Guy

2015-10-01

We examine how the Rytov approximation describing log-amplitude and phase fluctuations of a wave propagating through weak uniform turbulence can be generalized to the case of turbulence with a large-scale nonuniform component. We show how the large-scale refractive index field creates Fermat rays using the path integral formulation for paraxial propagation. We then show how the second-order derivatives of the Fermat ray action affect the Rytov approximation, and we discuss how a numerical algorithm would model the general Rytov approximation.

Nigerian Journal of General Practice: Submissions

African Journals Online (AJOL)

Author Guidelines. The Nigerian Journal of General Practice is the Official Publication of the Association of General and Private Medical Practitioners of Nigeria [AGPMPN] and a forum for family private/general practice medicine education and research. The Nigerian Journal of General Practice invites scholarly manuscripts ...

On Generalization in Qualitatively Oriented Research

Directory of Open Access Journals (Sweden)

Philipp Mayring

2007-09-01

Full Text Available In this article, I open a debate about the importance and possibilities of generalization in qualitative oriented research. Generalization traditionally is seen as a central aim of science, as a process of theory formulation for further applications. Others criticize the concept in general, either because of the insufficiency of inductive arguments (POPPER, 1959 or because of context specificity of all scientific findings (LINCOLN & GUBA, 1985. In this paper, I argue that generalization is necessary in qualitative research, but we have to differentiate different aims of generalization: laws, rules, context specific statements, similarities and differences, and procedures. There are different possibilities to arrive at a generalization: analysis of total population, falsification, random or stratified samples, argumentative generalization, theoretical sampling, variation, and triangulation. Depending on the type of research or research design some of those strategies of generalization can be important for qualitative oriented research. This is discussed especially in respect to single case analysis. URN: urn:nbn:de:0114-fqs0703262

A qualitative study of collaboration in general practice: understanding the general practice nurse's role.

Science.gov (United States)

McInnes, Susan; Peters, Kath; Bonney, Andrew; Halcomb, Elizabeth

2017-07-01

To explore the nature of collaboration between registered nurses and general practitioners in Australian general practice. There is international recognition that collaboration between health professionals can improve care coordination, enhance health outcomes, optimise the work environment and reduce healthcare costs. However, effective collaboration requires a clear understanding of each team member's role. A qualitative approach guided by Naturalistic Inquiry was used to elicit and interpret participant narratives. Eight general practitioners and fourteen registered nurses working in general practice were purposefully recruited. Data were collected via individual, semi-structured face-to-face interviews during February to May 2015. Interviews were audio recorded and transcribed verbatim. Data were analysed using thematic analysis. Data revealed three overarching themes. This study presents the data for the overarching theme 'Understanding the general practice registered nurse's role'. Many general practitioner participants lacked clarity around the role and scope of practice of the registered nurse. At the same time, nursing participants often articulated their role as an assistant rather than as an independent health professional. This limited collaboration and the nurses' role within the team. Collaboration was enhanced when general practitioners actively sought an understanding of the registered nurses scope of practice. Clarifying the nurses' role promotes collaboration and supports nurses to work to the full extent of their practice. This is important in terms of optimising the nurses' role within the team and reinforcing their professional identity. Identification of key issues around understanding the nurses' role may help inform strategies that improve collaboration and workplace relations. © 2016 John Wiley & Sons Ltd.

On a generalized secant integral

International Nuclear Information System (INIS)

Hanna, L.A.-M.; Kalla, S.L.

2000-01-01

In this paper, we introduce a generalization of the secant integral in the following form I a (ψ, b, λ)=b a ∫ ψ 0 (e -bsecφ (secφ) a (tanφ) 2λ-1 dφ) with a≥0, b>0, 0 0. This new generalization of the secant integral might have some applications in radiation field problems of different source-shield configurations. We have obtained two series representations for I a ψ, b, λ in terms of incomplete gamma function. The complete generalized secant integral is expressed in terms of generalized hypergeometric functions. Some recurrence relations are given.

General method and exact solutions to a generalized variable-coefficient two-dimensional KdV equation

International Nuclear Information System (INIS)

Chen, Yong; Shanghai Jiao-Tong Univ., Shangai; Chinese Academy of sciences, Beijing

2005-01-01

A general method to uniformly construct exact solutions in terms of special function of nonlinear partial differential equations is presented by means of a more general ansatz and symbolic computation. Making use of the general method, we can successfully obtain the solutions found by the method proposed by Fan (J. Phys. A., 36 (2003) 7009) and find other new and more general solutions, which include polynomial solutions, exponential solutions, rational solutions, triangular periodic wave solution, soliton solutions, soliton-like solutions and Jacobi, Weierstrass doubly periodic wave solutions. A general variable-coefficient two-dimensional KdV equation is chosen to illustrate the method. As a result, some new exact soliton-like solutions are obtained. planets. The numerical results are given in tables. The results are discussed in the conclusion

Teotihuacan, tepeapulco, and obsidian exploitation.

Science.gov (United States)

Charlton, T H

1978-06-16

Current cultural ecological models of the development of civilization in central Mexico emphasize the role of subsistence production techniques and organization. The recent use of established and productive archeological surface survey techniques along natural corridors of communication between favorable niches for cultural development within the Central Mexican symbiotic region resulted in the location of sites that indicate an early development of a decentralized resource exploitation, manufacturing, and exchange network. The association of the development of this system with Teotihuacán indicates the importance such nonsubsistence production and exchange had in the evolution of this first central Mexican civilization. The later expansion of Teotihuacán into more distant areas of Mesoamerica was based on this resource exploitation model. Later civilizations centered at Tula and Tenochtitlán also used such a model in their expansion.

Quantity Constrained General Equilibrium

NARCIS (Netherlands)

Babenko, R.; Talman, A.J.J.

2006-01-01

In a standard general equilibrium model it is assumed that there are no price restrictions and that prices adjust infinitely fast to their equilibrium values.In case of price restrictions a general equilibrium may not exist and rationing on net demands or supplies is needed to clear the markets.In

Computing generalized Langevin equations and generalized Fokker-Planck equations.

Science.gov (United States)

Darve, Eric; Solomon, Jose; Kia, Amirali

2009-07-07

The Mori-Zwanzig formalism is an effective tool to derive differential equations describing the evolution of a small number of resolved variables. In this paper we present its application to the derivation of generalized Langevin equations and generalized non-Markovian Fokker-Planck equations. We show how long time scales rates and metastable basins can be extracted from these equations. Numerical algorithms are proposed to discretize these equations. An important aspect is the numerical solution of the orthogonal dynamics equation which is a partial differential equation in a high dimensional space. We propose efficient numerical methods to solve this orthogonal dynamics equation. In addition, we present a projection formalism of the Mori-Zwanzig type that is applicable to discrete maps. Numerical applications are presented from the field of Hamiltonian systems.

29 CFR 2.11 - General principles.

Science.gov (United States)

2010-07-01

... 29 Labor 1 2010-07-01 2010-07-01 true General principles. 2.11 Section 2.11 Labor Office of the Secretary of Labor GENERAL REGULATIONS Audiovisual Coverage of Administrative Hearings § 2.11 General principles. The following general principles will be observed in granting or denying requests for permission...

28 CFR 0.5 - Attorney General.

Science.gov (United States)

2010-07-01

... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Attorney General. 0.5 Section 0.5... Attorney General § 0.5 Attorney General. The Attorney General shall: (a) Supervise and direct the administration and operation of the Department of Justice, including the offices of U.S. Attorneys and U.S...

GENERAL SURGERY

African Journals Online (AJOL)

effect of fatigue on patient safety, and owing to increasing emphasis on lifestyle issues .... increasing emphasis on an appropriate work-life balance in professional life.10 ... experience, were the most negative about the EWTD in general.3,13 ...

Generalized Recovery

DEFF Research Database (Denmark)

Jensen, Christian Skov; Lando, David; Pedersen, Lasse Heje

We characterize when physical probabilities, marginal utilities, and the discount rate can be recovered from observed state prices for several future time periods. Our characterization makes no assumptions of the probability distribution, thus generalizing the time-homogeneous stationary model...

28 CFR 0.161 - Acceptance of certain offers by the Deputy Attorney General or Associate Attorney General, as...

Science.gov (United States)

2010-07-01

... Deputy Attorney General or Associate Attorney General, as appropriate. 0.161 Section 0.161 Judicial... certain offers by the Deputy Attorney General or Associate Attorney General, as appropriate. (a) In all... § 0.160, the Assistant Attorney General concerned shall, when he is of the opinion that the proposed...

The power of general relativity

International Nuclear Information System (INIS)

Clifton, Timothy; Barrow, John D.

2005-01-01

We study the cosmological and weak-field properties of theories of gravity derived by extending general relativity by means of a Lagrangian proportional to R 1+δ . This scale-free extension reduces to general relativity when δ→0. In order to constrain generalizations of general relativity of this power class, we analyze the behavior of the perfect-fluid Friedmann universes and isolate the physically relevant models of zero curvature. A stable matter-dominated period of evolution requires δ>0 or δ -19 assuming that Mercury follows a timelike geodesic. The combination of these observational constraints leads to the overall bound 0≤δ -19 on theories of this type

28 CFR 0.19 - Associate Attorney General.

Science.gov (United States)

2010-07-01

... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Associate Attorney General. 0.19 Section...-Office of the Associate Attorney General § 0.19 Associate Attorney General. (a) The Associate Attorney General shall advise and assist the Attorney General and the Deputy Attorney General in formulating and...

Necklaces: Generalizations

Indian Academy of Sciences (India)

IAS Admin

. A q-ary necklace of length n is an equivalence class of q-coloured strings of length n under rota- tion. In this article, we study various generaliza- tions and derive analytical expressions to count the number of these generalized necklaces.

GENERAL SURGERY

African Journals Online (AJOL)

could cripple the global economy. Greater attention ... Africa and 5.7 general surgeons per 100 000 in the US.12 One of the key ... 100 000 insured population working in the private sector, which is comparable with the United States (US).

The generalized Airy diffusion equation

Directory of Open Access Journals (Sweden)

Frank M. Cholewinski

2003-08-01

Full Text Available Solutions of a generalized Airy diffusion equation and an associated nonlinear partial differential equation are obtained. Trigonometric type functions are derived for a third order generalized radial Euler type operator. An associated complex variable theory and generalized Cauchy-Euler equations are obtained. Further, it is shown that the Airy expansions can be mapped onto the Bessel Calculus of Bochner, Cholewinski and Haimo.

Teachers' Understanding of Algebraic Generalization

Science.gov (United States)

Hawthorne, Casey Wayne

Generalization has been identified as a cornerstone of algebraic thinking (e.g., Lee, 1996; Sfard, 1995) and is at the center of a rich conceptualization of K-8 algebra (Kaput, 2008; Smith, 2003). Moreover, mathematics teachers are being encouraged to use figural-pattern generalizing tasks as a basis of student-centered instruction, whereby teachers respond to and build upon the ideas that arise from students' explorations of these activities. Although more and more teachers are engaging their students in such generalizing tasks, little is known about teachers' understanding of generalization and their understanding of students' mathematical thinking in this domain. In this work, I addressed this gap, exploring the understanding of algebraic generalization of 4 exemplary 8th-grade teachers from multiple perspectives. A significant feature of this investigation is an examination of teachers' understanding of the generalization process, including the use of algebraic symbols. The research consisted of two phases. Phase I was an examination of the teachers' understandings of the underlying quantities and quantitative relationships represented by algebraic notation. In Phase II, I observed the instruction of 2 of these teachers. Using the lens of professional noticing of students' mathematical thinking, I explored the teachers' enacted knowledge of algebraic generalization, characterizing how it supported them to effectively respond to the needs and queries of their students. Results indicated that teachers predominantly see these figural patterns as enrichment activities, disconnected from course content. Furthermore, in my analysis, I identified conceptual difficulties teachers experienced when solving generalization tasks, in particular, connecting multiple symbolic representations with the quantities in the figures. Moreover, while the teachers strived to overcome the challenges of connecting different representations, they invoked both productive and unproductive

Natural Gas Regulation

International Nuclear Information System (INIS)

1995-01-01

The regulation of Natural Gas. Natural gas Regulation clarifies and consolidates the legal and institutional framework for development of the industry through six principal elements: 1) Establishment of a vision of the industry. 2) Development of regulatory objectives. 3) Determination of relationships among industry participants. 4) Clear specification of the role of PEMEX in the industry. 5) Definition of the functions of the Regulatory authority. 6) Creation of a transition regime. In parallel with the development of the substantive legal framework, the law of the Comision Reguladora de Energia (CRE) was also enacted by Congress in October 1995 to strength the institutional framework and implement the legal changes. This law defines the CRE as an agency of the Energy Ministry with technical, operational, and budgetary autonomy, and responsibility for implementing natural gas industry regulation. (Author)

A case study: Residue reduction at Deer Park Refining Limited Partnership

International Nuclear Information System (INIS)

Geehan, D.M.

1996-01-01

With input from Shell Synthetic Fuels Inc. (SSFI), Deer Park Refining Limited Partnership (DPRLP) analyzed options for managing the bottom of the barrel to extinction, with an objective of high return on investment. DPRLP is a joint venture of PEMEX and Shell Oil Company. This Gulf Coast refiner processes 227M BBL/D of heavy, high sulfur crude. This paper discusses the process options considered, their advantages and disadvantages, and the option selected as well as the options still open. Recent modernization projects at DPRLP are now on stream with high yield of clean products.There remains one by-product, petroleum coke, which presents opportunity as a low cost feed for one or more process options yielding attractive products. The Shell Coke (or Coal) Gasification Process is one of the options now being considered

31 CFR 596.305 - General license.

Science.gov (United States)

2010-07-01

... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM LIST GOVERNMENTS SANCTIONS REGULATIONS General Definitions § 596.305 General license. The term general license means any license or authorization...

IAEA Director General to Visit Iran

International Nuclear Information System (INIS)

2012-01-01

Full text: The Director General of the IAEA, Yukiya Amano, will travel to Tehran this Sunday, 20 May 2012, to discuss issues of mutual interest with high Iranian officials. In the course of his one-day working visit, on Monday 21 May 2012 the Director General will meet the Secretary of Iran's Supreme National Security Council, His Excellency Saeed Jalili, and other senior representatives of the Iranian government. Herman Nackaerts, Deputy Director General for Safeguards, and Rafael Mariano Grossi, Assistant Director General for Policy, will accompany the Director General. (IAEA)

UN Secretary General visits CERN

CERN Multimedia

2008-01-01

UN Secretary General praises CERN in recent visit. Ban Ki-moon, Robert Aymar, CERN Director-General, and Sergei Ordzhonikidze, Director-General of the United Nations Office in Geneva at the CMS site.On Sunday 31 August, Ban Ki-moon, the UN Secretary General, made an important visit to CERN. Arriving in the late afternoon, he was warmly greeted at Point 5 by Robert Aymar, the Director-General, and the Sous-préfet of Gex, Olivier Laurens-Bernard. Accompanied by a UN delegation, Ban Ki-moon was also introduced to Jos Engelen, the Chief Scientific Officer, and Jim Virdee, the CMS spokesperson. He then took the opportunity to visit CMS and the machine tunnel. At the end of his short trip, Ban Ki-moon signed the Guest Book in the tradition of important dignitaries visiting CERN. Expressing his admiration for CERN’s spirit of collaboration, Ban Ki-moon said, "I am very honored to visit CERN, an invaluable scientific institution a...

TRAC development at General Electric

International Nuclear Information System (INIS)

Andersen, J.G.M.; Shaug, J.C.; Shiralkar, B.S.

1987-01-01

TRAC is a computer code for transient analysis of light water reactors. The BWR version of TRAC has been developed as a result of a close cooperation between General Electric Company and Idaho National Engineering Laboratory. Up through 1985 the development work at General Electric was jointly funded by General Electric, the Nuclear Regulatory Commission and Electric Power Research Institute under the Refill-Reflood and FIST programs. At INEL (which has the main responsibility for the NRC version of TRAC-BWR) this work has led to the development of TRACBD1 and TRACBF1, while at GE, TRACB04 was the final product of the Refill-Reflood and FIST programs. TRAC development has continued at General Electric after the completion of these programs with the evolution of the TRACG code. The purpose of the paper is to describe this work. The TRAC development at General Electric can be divided into two main categories: extended benchmark capability and improved user convenience

Generalized Recovery

DEFF Research Database (Denmark)

Jensen, Christian Skov; Lando, David; Pedersen, Lasse Heje

We characterize when physical probabilities, marginal utilities, and the discount rate can be recovered from observed state prices for several future time periods. We make no assumptions of the probability distribution, thus generalizing the time-homogeneous stationary model of Ross (2015). Recov...

Cosmological tests of general relativity

International Nuclear Information System (INIS)

Hut, P.

1977-01-01

It is stated that the general relativity theory could be tested on a cosmological scale by measuring the Hubble constant and the deceleration parameter, if, in addition, everything could be known about the matter filling the universe. If, on the other hand, nothing could be presupposed about the matter content of the universe general relativity could not be tested by measuring any number of time derivatives of the scale factor. But upon making the assumption of a universe filled with non-interacting mixture of non-relativistic matter and radiation general relativity can in principle be tested by measuring the first five derivatives of the scale factor. Some general relations are here presented using this assumption. (author)

Experiments to Distribute Map Generalization Processes

Science.gov (United States)

Berli, Justin; Touya, Guillaume; Lokhat, Imran; Regnauld, Nicolas

2018-05-01

Automatic map generalization requires the use of computationally intensive processes often unable to deal with large datasets. Distributing the generalization process is the only way to make them scalable and usable in practice. But map generalization is a highly contextual process, and the surroundings of a generalized map feature needs to be known to generalize the feature, which is a problem as distribution might partition the dataset and parallelize the processing of each part. This paper proposes experiments to evaluate the past propositions to distribute map generalization, and to identify the main remaining issues. The past propositions to distribute map generalization are first discussed, and then the experiment hypotheses and apparatus are described. The experiments confirmed that regular partitioning was the quickest strategy, but also the less effective in taking context into account. The geographical partitioning, though less effective for now, is quite promising regarding the quality of the results as it better integrates the geographical context.

Generalized G-theory

International Nuclear Information System (INIS)

Sladkowski, J.

1991-01-01

Various attempts to formulate the fundamental physical interactions in the framework of unified geometric theories have recently gained considerable success (Kaluza, 1921; Klein, 1926; Trautmann, 1970; Cho, 1975). Symmetries of the spacetime and so-called internal spaces seem to play a key role in investigating both the fundamental interactions and the abundance of elementary particles. The author presents a category-theoretic description of a generalization of the G-theory concept and its application to geometric compactification and dimensional reduction. The main reasons for using categories and functors as tools are the clearness and the level of generalization one can obtain

Open Access to General Practice Was Associated with Burnout among General Practitioners

DEFF Research Database (Denmark)

Vedsted, Peter; Sokolowski, Ineta; Olesen, Frede

2013-01-01

Walk-in open access in general practice may influence the general practitioner's (GP's) work, but very little research has been done on the consequences. In this study from Danish general practice, we compare the prevalence of burnout between GPs with a walk-in open access and those without....... In a questionnaire study (2004), we approached all 458 active GPs in the county of Aarhus, Denmark, and 376 (82.8%) GPs returned the questionnaire. Walk-in open access was defined as at least 30 minutes every weekday where patients could attend practice without an appointment. Burnout was measured by the Maslach...... Burnout Inventory. Analyses using logistic regression were adjusted for gender, age, marital status, job satisfaction, minutes per consultation, practice organisation, working hours, number of listed patients per GP, number of contacts per GP, continuing medical education- (CME-) activities, and clusters...

Genetics Home Reference: generalized pustular psoriasis

Science.gov (United States)

... Home Health Conditions Generalized pustular psoriasis Generalized pustular psoriasis Printable PDF Open All Close All Enable Javascript ... view the expand/collapse boxes. Description Generalized pustular psoriasis (GPP) is a severe form of a skin ...

The evolution of robotic general surgery.

Science.gov (United States)

Wilson, E B

2009-01-01

Surgical robotics in general surgery has a relatively short but very interesting evolution. Just as minimally invasive and laparoscopic techniques have radically changed general surgery and fractionated it into subspecialization, robotic technology is likely to repeat the process of fractionation even further. Though it appears that robotics is growing more quickly in other specialties, the changes digital platforms are causing in the general surgical arena are likely to permanently alter general surgery. This review examines the evolution of robotics in minimally invasive general surgery looking forward to a time where robotics platforms will be fundamental to elective general surgery. Learning curves and adoption techniques are explored. Foregut, hepatobiliary, endocrine, colorectal, and bariatric surgery will be examined as growth areas for robotics, as well as revealing the current uses of this technology.

77 FR 41808 - General Dynamics Itronix Corporation, a Subsidiary of General Dynamics Corporation, Including...

Science.gov (United States)

2012-07-16

... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-81,448] General Dynamics Itronix Corporation, a Subsidiary of General Dynamics Corporation, Including Remote Workers Reporting to Sunrise, FL..., 2012, a State Workforce Office requested administrative reconsideration of the negative determination...

Valoració general de la Sentència - Valoración general de la Sentencia

Directory of Open Access Journals (Sweden)

Joaquín Tornos Mas

2010-07-01

Full Text Available La Sentència 31/2010: valoració general del seu impacte sobre l’Estatut i l’estat de les autonomies (11-22 Enoch Albertí RoviraAlguna consideració sobre la Sentència 31/2010 i el rol atribuït al Tribunal Constitucional (23-28Miguel A. Aparicio PérezUna visió general (29-32Xavier Arbós MarínBreus consideracions sobre la Sentència 31/2010 (33-38Mercè Barceló SerramaleraUna visió global de la Sentència (39-44Joaquim Ferret JacasValoració general (45-48Joaquín Tornos MasValoració general de la Sentència 31/2010 (49-63Joan Vintró CastellsEls efectes jurídics de la Sentència sobre l’Estatut (64-68Carles Viver Pi-SunyerLa Sentencia 31/2010: valoración general de su impacto sobre el Estatuto y el estado de las autonomías (11-22Enoch Albertí RoviraAlguna consideración sobre la Sentencia 31/2010 y el rol atribuido al Tribunal Constitucional (23-28Miguel A. Aparicio PérezUna visión general (29-32Xavier Arbós MarínBreves consideraciones sobre la Sentencia 31/2010 (33-38Mercè Barceló SerramaleraUna visión global de la Sentencia (39-44Joaquim Ferret JacasValoración general (45-48Joaquín Tornos MasValoración general de la Sentencia 31/2010 (49-63Joan Vintró CastellsLos efectos jurídicos de la Sentencia sobre el Estatuto (64-68Carles Viver Pi-Sunyer

GENERAL Iarticle

Indian Academy of Sciences (India)

Home; Journals; Resonance – Journal of Science Education; Volume 8; Issue 2. Supersymmetry. Akshay Kulkarni P Ramadevi. General Article Volume 8 Issue 2 February 2003 pp 28-41 ... Author Affiliations. Akshay Kulkarni1 P Ramadevi1. Physics Department, Indian Institute of Technology, Mumbai 400 076, India.

GENERAL SURGERY

African Journals Online (AJOL)

Department of Surgery, University of Cape Town Health Sciences Faculty, Groote Schuur Hospital, Observatory, Cape Town,. South Africa ... included all district, regional and tertiary hospitals in the nine provinces. Clinics and so-called ..... large contingency of senior general surgeons from countries such as Cuba, who have ...

Philanthropic endowments in general internal medicine.

Science.gov (United States)

Murden, R A; Lamb, J F

1999-04-01

We performed two surveys to uncover the status of philanthropic endowments in general internal medicine divisions. The initial survey of U.S. medical school departments of medicine found that only 14.1% of general internal medicine divisions hold endowments versus 21.9% of all other divisions, and that endowment sources for general medicine are atypical. The second survey of successfully endowed divisions found that sympathetic administrators and active pursuit of endowments were associated with endowment success. Aggressive pursuit of endowments, publicizing successes of general medicine, and consideration of endowment sources noted in this study are recommended to improve philanthropic contributions to general internal medicine.

28 CFR 0.15 - Deputy Attorney General.

Science.gov (United States)

2010-07-01

... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Deputy Attorney General. 0.15 Section 0... the Deputy Attorney General § 0.15 Deputy Attorney General. (a) The Deputy Attorney General is authorized to exercise all the power and authority of the Attorney General, unless any such power or...

S-equivalents lagrangians in generalized mechanics

International Nuclear Information System (INIS)

Negri, L.J.; Silva, Edna G. da.

1985-01-01

The problem of s-equivalent lagrangians is considered in the realm of generalized mechanics. Some results corresponding to the ordinary (non-generalized) mechanics are extended to the generalized case. A theorem for the reduction of the higher order lagrangian description to the usual order is found to be useful for the analysis of generalized mechanical systems and leads to a new class of equivalence between lagrangian functions. Some new perspectives are pointed out. (Author) [pt

The general class of the vacuum spherically symmetric equations of the general relativity theory

International Nuclear Information System (INIS)

Karbanovski, V. V.; Sorokin, O. M.; Nesterova, M. I.; Bolotnyaya, V. A.; Markov, V. N.; Kairov, T. V.; Lyash, A. A.; Tarasyuk, O. R.

2012-01-01

The system of the spherical-symmetric vacuum equations of the General Relativity Theory is considered. The general solution to a problem representing two classes of line elements with arbitrary functions g 00 and g 22 is obtained. The properties of the found solutions are analyzed.

Open Access to General Practice Was Associated with Burnout among General Practitioners.

Science.gov (United States)

Vedsted, Peter; Sokolowski, Ineta; Olesen, Frede

2013-01-01

Walk-in open access in general practice may influence the general practitioner's (GP's) work, but very little research has been done on the consequences. In this study from Danish general practice, we compare the prevalence of burnout between GPs with a walk-in open access and those without. In a questionnaire study (2004), we approached all 458 active GPs in the county of Aarhus, Denmark, and 376 (82.8%) GPs returned the questionnaire. Walk-in open access was defined as at least 30 minutes every weekday where patients could attend practice without an appointment. Burnout was measured by the Maslach Burnout Inventory. Analyses using logistic regression were adjusted for gender, age, marital status, job satisfaction, minutes per consultation, practice organisation, working hours, number of listed patients per GP, number of contacts per GP, continuing medical education- (CME-) activities, and clusters of GPs. In all, 8% of GPs had open access and the prevalence of burnout was 24%. GPs with walk-in open access were more likely to suffer from burnout. Having open access was associated with a 3-fold increased likelihood of burnout (OR = 3.1 (95% CI: 1.1-8.8, P = 0.035)). Although the design cannot establish causality, it is recommended to closely monitor possible negative consequences of open access in general practice.

Characterization of generalized Orlicz spaces

KAUST Repository

Ferreira, Rita

2016-12-14

The norm in classical Sobolev spaces can be expressed as a difference quotient. This expression can be used to generalize the space to the fractional smoothness case. Because the difference quotient is based on shifting the function, it cannot be used in generalized Orlicz spaces. In its place, we introduce a smoothed difference quotient and show that it can be used to characterize the generalized Orlicz-Sobolev space. Our results are new even in Orlicz spaces and variable exponent spaces.

Characterization of generalized Orlicz spaces

KAUST Repository

Ferreira, Rita; Hä stö , Peter; Ribeiro, Ana Margarida

2016-01-01

The norm in classical Sobolev spaces can be expressed as a difference quotient. This expression can be used to generalize the space to the fractional smoothness case. Because the difference quotient is based on shifting the function, it cannot be used in generalized Orlicz spaces. In its place, we introduce a smoothed difference quotient and show that it can be used to characterize the generalized Orlicz-Sobolev space. Our results are new even in Orlicz spaces and variable exponent spaces.

The world economy of petroleum products and the strategy of a petroleum company from exporting country: Cases of SONATRACH (Algeria), KPC (Kuwait), PEMEX (Mexico), PDVSA (Venezuela). First volume

International Nuclear Information System (INIS)

Preure, M.

1992-12-01

This thesis contains 2 volumes. In this first volume, the author describes in a first part the world economy of petroleum and natural gas products: Historical aspects and relationships between the different actors; General structure of the world economy of petroleum and gas products and actual trends. In a second part, the relationships between petroleum products, national economic development and problem of technology conservation are studied. The cases of Algeria, Kuwait, Mexico and Venezuela are given. 258 refs., 103 tabs

Noradrenergic Stimulation Impairs Memory Generalization in Women.

Science.gov (United States)

Kluen, Lisa Marieke; Agorastos, Agorastos; Wiedemann, Klaus; Schwabe, Lars

2017-07-01

Memory generalization is essential for adaptive decision-making and action. Our ability to generalize across past experiences relies on medial-temporal lobe structures, known to be highly sensitive to stress. Recent evidence suggests that stressful events may indeed interfere with memory generalization. Yet, the mechanisms involved in this generalization impairment are unknown. We tested here whether a pharmacological elevation of major stress mediators-noradrenaline and glucocorticoids-is sufficient to disrupt memory generalization. In a double-blind, placebo-controlled design, healthy men and women received orally a placebo, hydrocortisone, the α2-adrenoceptor antagonist yohimbine that leads to increased noradrenergic stimulation, or both drugs, before they completed an associative learning task probing memory generalization. Drugs left learning performance intact. Yohimbine, however, led to a striking generalization impairment in women, but not in men. Hydrocortisone, in turn, had no effect on memory generalization, neither in men nor in women. The present findings indicate that increased noradrenergic activity, but not cortisol, is sufficient to disrupt memory generalization in a sex-specific manner, with relevant implications for stress-related mental disorders characterized by generalization deficits.

47 CFR 32.13 - Accounts-general.

Science.gov (United States)

2010-10-01

... herein. However, reporting companies may use different numbers for internal purposes when separate... reports to any state commission, the company shall incorporate the following controls into their... FOR TELECOMMUNICATIONS COMPANIES General Instructions § 32.13 Accounts—general. (a) As a general rule...

On generalized operator quasi-equilibrium problems

Science.gov (United States)

Kum, Sangho; Kim, Won Kyu

2008-09-01

In this paper, we will introduce the generalized operator equilibrium problem and generalized operator quasi-equilibrium problem which generalize the operator equilibrium problem due to Kazmi and Raouf [K.R. Kazmi, A. Raouf, A class of operator equilibrium problems, J. Math. Anal. Appl. 308 (2005) 554-564] into multi-valued and quasi-equilibrium problems. Using a Fan-Browder type fixed point theorem in [S. Park, Foundations of the KKM theory via coincidences of composites of upper semicontinuous maps, J. Korean Math. Soc. 31 (1994) 493-519] and an existence theorem of equilibrium for 1-person game in [X.-P. Ding, W.K. Kim, K.-K. Tan, Equilibria of non-compact generalized games with L*-majorized preferences, J. Math. Anal. Appl. 164 (1992) 508-517] as basic tools, we prove new existence theorems on generalized operator equilibrium problem and generalized operator quasi-equilibrium problem which includes operator equilibrium problems.

Addressing the General Education Curriculum in General Education Settings with Students with Severe Disabilities

Science.gov (United States)

Ballard, Sarah L.; Dymond, Stacy K.

2017-01-01

This systematic literature review examined research on stakeholders' beliefs about addressing the general education curriculum in general education classrooms with students with severe disabilities (SD). The investigation was limited to studies published in peer-reviewed journals between 1997 and 2015. Ten articles were identified and then…

GENERAL SURGERY

African Journals Online (AJOL)

in the endoscopy room. GENERAL SURGERY. T du Toit, O C Buchel, S J A Smit. Department of Surgery, University of the Free State, Bloemfontein, ... The lack of video instrumentation in developing countries: Redundant fibre-optic instruments (the old. “eye scope”) are still being used. This instrument brings endoscopists ...

Generalized concatenated quantum codes

International Nuclear Information System (INIS)

Grassl, Markus; Shor, Peter; Smith, Graeme; Smolin, John; Zeng Bei

2009-01-01

We discuss the concept of generalized concatenated quantum codes. This generalized concatenation method provides a systematical way for constructing good quantum codes, both stabilizer codes and nonadditive codes. Using this method, we construct families of single-error-correcting nonadditive quantum codes, in both binary and nonbinary cases, which not only outperform any stabilizer codes for finite block length but also asymptotically meet the quantum Hamming bound for large block length.

Diphoton generalized distribution amplitudes

International Nuclear Information System (INIS)

El Beiyad, M.; Pire, B.; Szymanowski, L.; Wallon, S.

2008-01-01

We calculate the leading order diphoton generalized distribution amplitudes by calculating the amplitude of the process γ*γ→γγ in the low energy and high photon virtuality region at the Born order and in the leading logarithmic approximation. As in the case of the anomalous photon structure functions, the γγ generalized distribution amplitudes exhibit a characteristic lnQ 2 behavior and obey inhomogeneous QCD evolution equations.

40 CFR 52.2133 - General conformity.

Science.gov (United States)

2010-07-01

... 40 Protection of Environment 4 2010-07-01 2010-07-01 false General conformity. 52.2133 Section 52...) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS (CONTINUED) South Carolina § 52.2133 General conformity. The General Conformity regulations adopted into the South Carolina State Implementation Plan which...

Remarks On General Fibonacci Numbers

OpenAIRE

Billal, Masum

2015-01-01

We dedicate this paper to investigate the most generalized form of Fibonacci Sequence, one of the most studied sections of the mathematical literature. One can notice that, we have discussed even a more general form of the conventional one. Although it seems the topic in the first section has already been covered before, but we present a different proof here. Later I found out that, the auxiliary theorem used in the first section was proven and even generalized further by F. T. Howard. Thanks...

Management in general practice: the challenge of the new General Medical Services contract.

Science.gov (United States)

Checkland, Kath

2004-10-01

Managers in general practice perform a variety of roles, from purely administrative to higher-level strategic planning. There has been little research investigating in detail how they perform these roles and the problems that they encounter. The new General Medical Services (GMS) contract contains new management challenges and it is not clear how practices will meet these. To improve understanding of the roles performed by managers in general practice and to consider the implications of this for the implementation of the new GMS contract. In-depth qualitative case studies covering the period before and immediately after the vote in favour of the new GMS contract. Three general practices in England, chosen using purposeful sampling. Semi-structured interviews with all clinical and managerial personnel in each practice, participant and non-participant observation, and examination of documents. Understanding about what constitutes the legitimate role of managers in general practice varies both within and between practices. Those practices in the study that employed a manager to work at a strategic level with input into the direction of the organisation demonstrated significant problems with this in practice. These included lack of clarity about what the legitimate role of the manager involved, problems relating to the authority of managers in the context of a partnership, and lack of time available to them to do higher-level work. In addition, general practitioners (GPs) were not confident about their ability to manage their managers' performance. The new GMS contract will place significant demands on practice management. These results suggest that it cannot be assumed that simply employing a manager with high-level skills will enable these demands to be met; there must first be clarity about what the manager should be doing, and attention must be directed at questions about the legitimacy enjoyed by such a manager, the limits of his or her authority, and the

Concept research on general passive system

International Nuclear Information System (INIS)

Han Xu; Yang Yanhua; Zheng Mingguang

2009-01-01

This paper summarized the current passive techniques used in nuclear power plants. Through classification and analysis, the functional characteristics and inherent identification of passive systems were elucidated. By improving and extending the concept of passive system, the general passive concept was proposed, and space and time relativity was discussed and assumption of general passive system were illustrated. The function of idealized general passive system is equivalent with the current passive system, but the design of idealized general passive system is more flexible. (authors)

Testing the generalized partial credit model

OpenAIRE

Glas, Cornelis A.W.

1996-01-01

The partial credit model (PCM) (G.N. Masters, 1982) can be viewed as a generalization of the Rasch model for dichotomous items to the case of polytomous items. In many cases, the PCM is too restrictive to fit the data. Several generalizations of the PCM have been proposed. In this paper, a generalization of the PCM (GPCM), a further generalization of the one-parameter logistic model, is discussed. The model is defined and the conditional maximum likelihood procedure for the method is describe...

Generalized Fluid System Simulation Program (GFSSP) Version 6 - General Purpose Thermo-Fluid Network Analysis Software

Science.gov (United States)

Majumdar, Alok; Leclair, Andre; Moore, Ric; Schallhorn, Paul

2011-01-01

GFSSP stands for Generalized Fluid System Simulation Program. It is a general-purpose computer program to compute pressure, temperature and flow distribution in a flow network. GFSSP calculates pressure, temperature, and concentrations at nodes and calculates flow rates through branches. It was primarily developed to analyze Internal Flow Analysis of a Turbopump Transient Flow Analysis of a Propulsion System. GFSSP development started in 1994 with an objective to provide a generalized and easy to use flow analysis tool for thermo-fluid systems.

48 CFR 1427.304-1 - General.

Science.gov (United States)

2010-10-01

... Solicitor for the General Law Division shall issue a final determination, after consideration of any further... Section 1427.304-1 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Patent Rights Under Government Contracts. 1427.304-1 General. (a)(1...

7 CFR 254.1 - General purpose.

Science.gov (United States)

2010-01-01

... 7 Agriculture 4 2010-01-01 2010-01-01 false General purpose. 254.1 Section 254.1 Agriculture... GENERAL REGULATIONS AND POLICIES-FOOD DISTRIBUTION ADMINISTRATION OF THE FOOD DISTRIBUTION PROGRAM FOR INDIAN HOUSEHOLDS IN OKLAHOMA § 254.1 General purpose. This part sets the requirement under which...

19 CFR 122.1 - General definitions.

Science.gov (United States)

2010-04-01

... such government, or passengers traveling on official business of such government; or (3) Carrying... 19 Customs Duties 1 2010-04-01 2010-04-01 false General definitions. 122.1 Section 122.1 Customs... AIR COMMERCE REGULATIONS General Definitions and Provisions § 122.1 General definitions. The following...

10 CFR 1023.9 - General guidelines.

Science.gov (United States)

2010-01-01

... 10 Energy 4 2010-01-01 2010-01-01 false General guidelines. 1023.9 Section 1023.9 Energy DEPARTMENT OF ENERGY (GENERAL PROVISIONS) CONTRACT APPEALS Overview: Organization, Functions and Authorities § 1023.9 General guidelines. (a) The principles of this Overview shall apply to all Board functions...

40 CFR 52.938 - General conformity.

Science.gov (United States)

2010-07-01

... 40 Protection of Environment 3 2010-07-01 2010-07-01 false General conformity. 52.938 Section 52...) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Kentucky § 52.938 General conformity. The General Conformity regulations were submitted on November 10, 1995, and adopted into the Kentucky State...

Generalized Galilean algebras and Newtonian gravity

Science.gov (United States)

González, N.; Rubio, G.; Salgado, P.; Salgado, S.

2016-04-01

The non-relativistic versions of the generalized Poincaré algebras and generalized AdS-Lorentz algebras are obtained. These non-relativistic algebras are called, generalized Galilean algebras of type I and type II and denoted by GBn and GLn respectively. Using a generalized Inönü-Wigner contraction procedure we find that the generalized Galilean algebras of type I can be obtained from the generalized Galilean algebras type II. The S-expansion procedure allows us to find the GB5 algebra from the Newton Hooke algebra with central extension. The procedure developed in Ref. [1] allows us to show that the nonrelativistic limit of the five dimensional Einstein-Chern-Simons gravity is given by a modified version of the Poisson equation. The modification could be compatible with the effects of Dark Matter, which leads us to think that Dark Matter can be interpreted as a non-relativistic limit of Dark Energy.

49 CFR 1011.1 - General.

Science.gov (United States)

2010-10-01

... TRANSPORTATION GENERAL RULES AND REGULATIONS BOARD ORGANIZATION; DELEGATIONS OF AUTHORITY § 1011.1 General. (a... responsibilities to the Board, individual Board Members or employees, and employee boards. (b) As used in this part... employee, or an employee board. ...

Associators in generalized octonionic maps

International Nuclear Information System (INIS)

Griffin, C.J.; Joshi, G.C.

1994-01-01

Generalizing previous work, it is shown that structural transitions are a general property of a large class of octonionic maps. They can thus be used as an indicator of non-associativity in an octonionic map. 7 refs., ills

On θ-generalized closed sets

Directory of Open Access Journals (Sweden)

Julian Dontchev

1999-01-01

θ-generalized Λ-sets and R0-, T1/2- and T1-spaces are characterized. The relations with other notions directly or indirectly connected with generalized closed sets are investigated. The notion of TGO-connectedness is introduced.

The most general form of deformation of the Heisenberg algebra from the generalized uncertainty principle

Energy Technology Data Exchange (ETDEWEB)

Masood, Syed [Department of Physics, International Islamic University, H-10 Sector, Islamabad (Pakistan); Faizal, Mir, E-mail: mirfaizalmir@gmail.com [Irving K. Barber School of Arts and Sciences, University of British Columbia – Okanagan, Kelowna, BC V1V 1V7 (Canada); Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB T1K 3M4 (Canada); Zaz, Zaid [Department of Electronics and Communication Engineering, University of Kashmir, Srinagar, Kashmir, 190006 (India); Ali, Ahmed Farag [Department of Physics, Faculty of Science, Benha University, Benha, 13518 (Egypt); Raza, Jamil [Department of Physics, International Islamic University, H-10 Sector, Islamabad (Pakistan); Shah, Mushtaq B. [Department of Physics, National Institute of Technology, Srinagar, Kashmir, 190006 (India)

2016-12-10

In this paper, we will propose the most general form of the deformation of Heisenberg algebra motivated by the generalized uncertainty principle. This deformation of the Heisenberg algebra will deform all quantum mechanical systems. The form of the generalized uncertainty principle used to motivate these results will be motivated by the space fractional quantum mechanics, and non-locality in quantum mechanical systems. We also analyse a specific limit of this generalized deformation for one dimensional system, and in that limit, a nonlocal deformation of the momentum operator generates a local deformation of all one dimensional quantum mechanical systems. We analyse the low energy effects of this deformation on a harmonic oscillator, Landau levels, Lamb shift, and potential barrier. We also demonstrate that this deformation leads to a discretization of space.

The most general form of deformation of the Heisenberg algebra from the generalized uncertainty principle

International Nuclear Information System (INIS)

Masood, Syed; Faizal, Mir; Zaz, Zaid; Ali, Ahmed Farag; Raza, Jamil; Shah, Mushtaq B.

2016-01-01

In this paper, we will propose the most general form of the deformation of Heisenberg algebra motivated by the generalized uncertainty principle. This deformation of the Heisenberg algebra will deform all quantum mechanical systems. The form of the generalized uncertainty principle used to motivate these results will be motivated by the space fractional quantum mechanics, and non-locality in quantum mechanical systems. We also analyse a specific limit of this generalized deformation for one dimensional system, and in that limit, a nonlocal deformation of the momentum operator generates a local deformation of all one dimensional quantum mechanical systems. We analyse the low energy effects of this deformation on a harmonic oscillator, Landau levels, Lamb shift, and potential barrier. We also demonstrate that this deformation leads to a discretization of space.

Pseudo-complex general relativity

CERN Document Server

Hess, Peter O; Greiner, Walter

2016-01-01

This volume presents an pseudo-complex extension of General Relativity which addresses these issues and presents proposals for experimental examinations in strong fields near a large mass. General Relativity is a beautiful and well tested theory of gravitation. Nevertheless, it implies conceptual problems like the creation of singularities (Black Holes) as a result of the collapse of large masses, or the appearance of event horizons which exclude parts of the space-time from the observation of external observers. The mathematical and geometrical foundations of this extension are displayed in detail, and applications including orbits and accretion disks around large central masses, neutron stars or cosmological models are introduced. Calculations both for classical and extended applications are often executed in the form of problems with extensive solutions, which makes this volume also a valuable resource for any student of General Relativity.

48 CFR 32.601 - General.

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2010-10-01

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30 CFR 256.22 - General.

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2010-07-01

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39 CFR 4.3 - Postmaster General.

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2010-07-01

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45 CFR 96.41 - General determination.

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2010-10-01

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49 CFR 390.3 - General applicability.

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2010-10-01

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12 CFR 330.3 - General principles.

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2010-01-01

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The Transmuted Generalized Inverse Weibull Distribution

Directory of Open Access Journals (Sweden)

Faton Merovci

2014-05-01

Full Text Available A generalization of the generalized inverse Weibull distribution the so-called transmuted generalized inverse Weibull distribution is proposed and studied. We will use the quadratic rank transmutation map (QRTM in order to generate a flexible family of probability distributions taking the generalized inverseWeibull distribution as the base value distribution by introducing a new parameter that would offer more distributional flexibility. Various structural properties including explicit expressions for the moments, quantiles, and moment generating function of the new distribution are derived. We propose the method of maximum likelihood for estimating the model parameters and obtain the observed information matrix. A real data set are used to compare the flexibility of the transmuted version versus the generalized inverse Weibull distribution.

A critical incident study of general practice trainees in their basic general practice term.

Science.gov (United States)

Diamond, M R; Kamien, M; Sim, M G; Davis, J

1995-03-20

To obtain information on the experiences of general practice (GP) trainees during their first general practice (GP) attachment. Critical incident technique--a qualitative analysis of open-ended interviews about incidents which describe competent or poor professional practice. Thirty-nine Western Australian doctors from the Royal Australian College of General Practitioners' (RACGP) Family Medicine Program who were completing their first six months of general practice in 1992. Doctors reported 180 critical incidents, of which just over 50% involved problems (and sometimes successes) with: difficult patients; paediatrics; the doctor-patient relationship; counselling skills; obstetrics and gynaecology; relationships with other health professionals and practice staff; and cardiovascular disorders. The major skills associated with both positive and negative critical incidents were: the interpersonal skills of rapport and listening; the diagnostic skills of thorough clinical assessment and the appropriate use of investigations; and the management skills of knowing when and how to obtain help from supervisors, hospitals and specialists. Doctors reported high levels of anxiety over difficult management decisions and feelings of guilt over missed diagnoses and inadequate management. The initial GP term is a crucial transition period in the development of the future general practitioner. An analysis of commonly recurring positive and negative critical incidents can be used by the RACGP Training Program to accelerate the learning process of doctors in vocational training and has implications for the planning of undergraduate curricula.

Error Rates of M-PAM and M-QAM in Generalized Fading and Generalized Gaussian Noise Environments

KAUST Repository

Soury, Hamza

2013-07-01

This letter investigates the average symbol error probability (ASEP) of pulse amplitude modulation and quadrature amplitude modulation coherent signaling over flat fading channels subject to additive white generalized Gaussian noise. The new ASEP results are derived in a generic closed-form in terms of the Fox H function and the bivariate Fox H function for the extended generalized-K fading case. The utility of this new general closed-form is that it includes some special fading distributions, like the Generalized-K, Nakagami-m, and Rayleigh fading and special noise distributions such as Gaussian and Laplacian. Some of these special cases are also treated and are shown to yield simplified results.

7 CFR 51.1260 - General.

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2010-01-01

... FRESH FRUITS, VEGETABLES AND OTHER PRODUCTS 1,2 (INSPECTION, CERTIFICATION, AND STANDARDS) United States Standards for Summer and Fall Pears 1 General § 51.1260 General. These standards apply to varieties such as Bartlett, Hardy and other similar varieties. Grades ...

48 CFR 25.801 - General.

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2010-10-01

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19 CFR 210.2 - General policy.

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A generalization of Friedman's rank statistic

NARCIS (Netherlands)

Kroon, de J.; Laan, van der P.

1983-01-01

In this paper a very natural generalization of the two·way analysis of variance rank statistic of FRIEDMAN is given. The general distribution-free test procedure based on this statistic for the effect of J treatments in a random block design can be applied in general two-way layouts without

28 CFR 0.28 - General functions.

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2010-07-01

... Affairs § 0.28 General functions. The Office of Public Affairs is headed by a Director of Public Affairs who shall: (a) Handle matters pertaining to relations with the public generally. (b) Disseminate... 28 Judicial Administration 1 2010-07-01 2010-07-01 false General functions. 0.28 Section 0.28...

21 CFR 104.5 - General principles.

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2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false General principles. 104.5 Section 104.5 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION NUTRITIONAL QUALITY GUIDELINES FOR FOODS General Provisions § 104.5 General principles. (a) A...

39 CFR 4.5 - Assistant Postmasters General, General Counsel, Judicial Officer, Chief Postal Inspector.

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Generalized Time-Limited Balanced Reduction Method

DEFF Research Database (Denmark)

Shaker, Hamid Reza; Shaker, Fatemeh

2013-01-01

In this paper, a new method for model reduction of bilinear systems is presented. The proposed technique is from the family of gramian-based model reduction methods. The method uses time-interval generalized gramians in the reduction procedure rather than the ordinary generalized gramians...... and in such a way it improves the accuracy of the approximation within the time-interval which the method is applied. The time-interval generalized gramians are the solutions to the generalized time-interval Lyapunov equations. The conditions for these equations to be solvable are derived and an algorithm...

Hemochromatosis mutations in the general population

DEFF Research Database (Denmark)

Andersen, Rolf Vaern; Tybjaerg-Hansen, Anne; Appleyard, Merete

2004-01-01

The progression rate of iron overload in hereditary hemochromatosis in individuals in the general population is unknown. We therefore examined in the general population iron overload progression rate in C282Y homozygotes. Using a cohort study of the Danish general population, The Copenhagen City...... saturation and ferritin levels increased slightly in male and female C282Y homozygotes. None of the C282Y homozygotes developed clinically overt hemochromatosis. In conclusion, individuals in the general population with C282Y homozygosity at most demonstrate modest increases in transferrin saturation...

Learning styles of medical students, general surgery residents, and general surgeons: implications for surgical education

Directory of Open Access Journals (Sweden)

de Gara Chris

2010-06-01

Full Text Available Abstract Background Surgical education is evolving under the dual pressures of an enlarging body of knowledge required during residency and mounting work-hour restrictions. Changes in surgical residency training need to be based on available educational models and research to ensure successful training of surgeons. Experiential learning theory, developed by David Kolb, demonstrates the importance of individual learning styles in improving learning. This study helps elucidate the way in which medical students, surgical residents, and surgical faculty learn. Methods The Kolb Learning Style Inventory, which divides individual learning styles into Accommodating, Diverging, Converging, and Assimilating categories, was administered to the second year undergraduate medical students, general surgery resident body, and general surgery faculty at the University of Alberta. Results A total of 241 faculty, residents, and students were surveyed with an overall response rate of 73%. The predominant learning style of the medical students was assimilating and this was statistically significant (p Conclusions We conclude that medical students have a significantly different learning style from general surgical trainees and general surgeons. This has important implications in the education of general surgery residents.

7 CFR 51.1300 - General.

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2010-01-01

... FRESH FRUITS, VEGETABLES AND OTHER PRODUCTS 1,2 (INSPECTION, CERTIFICATION, AND STANDARDS) United States Standards for Winter Pears 1 General § 51.1300 General. These standards apply to varieties such as Anjou, Bosc, Winter Nelis, Comice, Flemish Beauty and other similar varieties. Grades ...

28 CFR 65.40 - General.

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... Administration DEPARTMENT OF JUSTICE (CONTINUED) EMERGENCY FEDERAL LAW ENFORCEMENT ASSISTANCE Submission and Review of Applications § 65.40 General. This subpart describes the process and criteria for the Attorney General's review and approval or disapproval of state applications. The original application, on Standard...

48 CFR 3003.301 - General.

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16 CFR 260.6 - General principles.

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... ENVIRONMENTAL MARKETING CLAIMS § 260.6 General principles. The following general principles apply to all environmental marketing claims, including, but not limited to, those described in § 260.7. In addition, § 260.7... 16 Commercial Practices 1 2010-01-01 2010-01-01 false General principles. 260.6 Section 260.6...

48 CFR 427.104 - General guidance.

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22 CFR 61.9 - General information.

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7 CFR 29.6017 - General quality.

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2010-01-01

... 7 Agriculture 2 2010-01-01 2010-01-01 false General quality. 29.6017 Section 29.6017 Agriculture... INSPECTION Standards Definitions § 29.6017 General quality. The quality of tobacco considered in relation to the type as a whole. General quality is distinguished from the restricted use of the term “quality...

21 CFR 102.5 - General principles.

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2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false General principles. 102.5 Section 102.5 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION COMMON OR USUAL NAME FOR NONSTANDARDIZED FOODS General Provisions § 102.5 General principles. (a...

Group supervision for general practitioners

DEFF Research Database (Denmark)

Galina Nielsen, Helena; Sofie Davidsen, Annette; Dalsted, Rikke

2013-01-01

AIM: Group supervision is a sparsely researched method for professional development in general practice. The aim of this study was to explore general practitioners' (GPs') experiences of the benefits of group supervision for improving the treatment of mental disorders. METHODS: One long-establish......AIM: Group supervision is a sparsely researched method for professional development in general practice. The aim of this study was to explore general practitioners' (GPs') experiences of the benefits of group supervision for improving the treatment of mental disorders. METHODS: One long...... considered important prerequisites for disclosing and discussing professional problems. CONCLUSION: The results of this study indicate that participation in a supervision group can be beneficial for maintaining and developing GPs' skills in dealing with patients with mental health problems. Group supervision...... influenced other areas of GPs' professional lives as well. However, more studies are needed to assess the impact of supervision groups....

Telemedicine in wound care.

Science.gov (United States)

Chanussot-Deprez, Caroline; Contreras-Ruiz, José

2008-12-01

Telemedical wound care is one of the applications of teledermatology. We present our experience using telemedicine in the successful assessment and treatment of three patients with hard-to-heal ulcers. Three patients were seen at the PEMEX General Hospital in Veracruz, Mexico. The first patient was a 53-year-old man with hypertension, morbid obesity, chronic venous insufficiency, recurrent erysipelas, leg ulcers and lymphoedema. There was one ulcer on his left lower leg (20 x 10 cm) and one on his right leg (9 x 7 cm). The second patient was a 73-year-old woman with class III obesity and ulcers in her right leg, secondary to surgical debridement of bullous erysipelas. The third patient was a 51-year-old female with rheumatoid arthritis with one ulcer on each leg and chronic lymphostasis. Photographs with a digital camera were taken and sent weekly via email to a wound care specialist in Mexico City. The photographs allowed the expert to diagnose and evaluate the chronic wounds periodically. In the present cases, telemedicine allowed us to have a rapid evaluation, diagnosis and treatment. The images were of enough quality to be useful and small enough to be sent via regular email to the remote physician who immediately gave his feedback. The expert was confident to give therapeutic recommendations in this way, and we considered this method to be very cost-effective, saving the patient and the health care system, especially in transportation.

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.

General Ultrasound Imaging

Medline Plus

Full Text Available ... General ultrasound procedure View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. ...

Accreditation in general practice in Denmark

DEFF Research Database (Denmark)

Andersen, Merethe K; Pedersen, Line B; Siersma, Volkert

2017-01-01

Background: Accreditation is used increasingly in health systems worldwide. However, there is a lack of evidence on the effects of accreditation, particularly in general practice. In 2016 a mandatory accreditation scheme was initiated in Denmark, and during a 3-year period all practices, as default...... general practitioners in Denmark. Practices allocated to accreditation in 2016 serve as the intervention group, and practices allocated to accreditation in 2018 serve as controls. The selected outcomes should meet the following criteria: (1) a high degree of clinical relevance; (2) the possibility...... practice and mortality. All outcomes relate to quality indicators included in the Danish Healthcare Quality Program, which is based on general principles for accreditation. Discussion: The consequences of accreditation and standard-setting processes are generally under-researched, particularly in general...

Matter in general relativity

Science.gov (United States)

Ray, J. R.

1982-01-01

Two theories of matter in general relativity, the fluid theory and the kinetic theory, were studied. Results include: (1) a discussion of various methods of completing the fluid equations; (2) a method of constructing charged general relativistic solutions in kinetic theory; and (3) a proof and discussion of the incompatibility of perfect fluid solutions in anisotropic cosmologies. Interpretations of NASA gravitational experiments using the above mentioned results were started. Two papers were prepared for publications based on this work.

Generalized transformations and coordinates for static spherically symmetric general relativity

Science.gov (United States)

Hill, James M.; O'Leary, Joseph

2018-04-01

We examine a static, spherically symmetric solution of the empty space field equations of general relativity with a non-orthogonal line element which gives rise to an opportunity that does not occur in the standard derivations of the Schwarzschild solution. In these derivations, convenient coordinate transformations and dynamical assumptions inevitably lead to the Schwarzschild solution. By relaxing these conditions, a new solution possibility arises and the resulting formalism embraces the Schwarzschild solution as a special case. The new solution avoids the coordinate singularity associated with the Schwarzschild solution and is achieved by obtaining a more suitable coordinate chart. The solution embodies two arbitrary constants, one of which can be identified as the Newtonian gravitational potential using the weak field limit. The additional arbitrary constant gives rise to a situation that allows for generalizations of the Eddington-Finkelstein transformation and the Kruskal-Szekeres coordinates.

Generalized transformations and coordinates for static spherically symmetric general relativity.

Science.gov (United States)

Hill, James M; O'Leary, Joseph

2018-04-01

We examine a static, spherically symmetric solution of the empty space field equations of general relativity with a non-orthogonal line element which gives rise to an opportunity that does not occur in the standard derivations of the Schwarzschild solution. In these derivations, convenient coordinate transformations and dynamical assumptions inevitably lead to the Schwarzschild solution. By relaxing these conditions, a new solution possibility arises and the resulting formalism embraces the Schwarzschild solution as a special case. The new solution avoids the coordinate singularity associated with the Schwarzschild solution and is achieved by obtaining a more suitable coordinate chart. The solution embodies two arbitrary constants, one of which can be identified as the Newtonian gravitational potential using the weak field limit. The additional arbitrary constant gives rise to a situation that allows for generalizations of the Eddington-Finkelstein transformation and the Kruskal-Szekeres coordinates.

General indicators

International Nuclear Information System (INIS)

2003-01-01

This document summarizes the main 2002 energy indicators for France. A first table lists the evolution of general indicators between 1973 and 2002: energy bill, price of imported crude oil, energy independence, primary and final energy consumption. The main 2002 results are detailed separately for natural gas, petroleum and coal (consumption, imports, exports, production, stocks, prices). (J.S.)

Generalized Recovery

DEFF Research Database (Denmark)

Lando, David; Pedersen, Lasse Heje; Jensen, Christian Skov

We characterize when physical probabilities, marginal utilities, and the discount rate can be recovered from observed state prices for several future time periods. We make no assumptions of the probability distribution, thus generalizing the time-homogeneous stationary model of Ross (2015...... our model empirically, testing the predictive power of the recovered expected return and other recovered statistics....

22 CFR 309.1 - General purpose.

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2010-04-01

... 22 Foreign Relations 2 2010-04-01 2010-04-01 true General purpose. 309.1 Section 309.1 Foreign Relations PEACE CORPS DEBT COLLECTION General Provisions § 309.1 General purpose. This part prescribes the procedures to be used by the United States Peace Corps (Peace Corps) in the collection and/or disposal of non...

40 CFR 68.12 - General requirements.

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2010-07-01

...) CHEMICAL ACCIDENT PREVENTION PROVISIONS General § 68.12 General requirements. (a) General requirements. The... the five-year accident history for the process as provided in § 68.42 of this part and submit it in... §§ 68.150 to 68.185. The RMP shall include a registration that reflects all covered processes. (b...

7 CFR 29.3026 - General quality.

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2010-01-01

... 7 Agriculture 2 2010-01-01 2010-01-01 false General quality. 29.3026 Section 29.3026 Agriculture... General quality. The quality of tobacco considered in relation to the type as a whole. General quality is distinguished from the restricted use of the term “quality” within a group. [24 FR 8771, Oct. 29, 1959...

48 CFR 5.401 - General.

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2010-10-01

... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false General. 5.401 Section 5.401 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION ACQUISITION PLANNING PUBLICIZING CONTRACT ACTIONS Release of Information 5.401 General. (a) A high level of business security must...