Percepción social para la implementación de un proyecto de turismo cultural en la comunidad de Sacalaca, Quintana Roo

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Valeria Betzabé Cuevas Albarrán

2016-01-01

Full Text Available El desarrollo de actividades económicas en la mayoría de las comunidades rurales de Quintana Roo está condicionado por las características del entorno ambiental, así como por la infraestructura disponible. Al presentar características prístinas que permiten el aprovechamiento del turismo cultural, se realizó una evaluación para determinar la percepción de las comunidades aledañas a Sacalaca, Quintana Roo, con el objeto de identificar el interés en adoptar esta estrategia de empresa sustentable en torno a esta modalidad turística. El proceso consistió en la aplicación de cuestionarios cerrados a nueve comunidades vecinas en donde se identificó una percepción positiva al ser considerado el turismo cultural como una fuente de empleos y generación de ingresos.

The Sac Actun System, Quintana Roo, Mexico

International Nuclear Information System (INIS)

Kambesis, P. N.; Coke, J. G.

2016-01-01

The Sac Actun system, located in northeast Quintana Roo, Mexico, is among the most extensive underwater cave systems located along the Caribbean coast of the Yucatan Peninsula. The cave is composed of linear phreatic conduits that have two forms. The coastal sections of the Sac Actun system are characterized by low horizontal tunnels that form mazes paralleling the coast and rudimentary conduits broken by fracture-controlled rooms. Inland passages are fault/fracture controlled, have a linear, anastomotic configuration, and align perpendicular to the coast. Access to the cave system is gained through cenotes which are the portals into the Yucatan underwater cave systems. The occurrence of drowned speleothems in many parts of the cave system, and sections of air-filled upper level passages are indicative of major fluctuations in sea level. The Sac Actun system is part of one of the most extensive and significant eogenetic karst aquifers in the world. The development of the Sac Actun system, as well as the many other caves systems along the Yucatan Caribbean Coast is controlled by the coastal hydrologic regime, driven by glacio-eustatics, and influenced by stratigraphic and structural controls. The karstic permeability of the aquifer makes it and the Sac Actun system vulnerable to the anthropogenic impacts of increased population growth, quarries, and infrastructure development associated with the burgeoning tourist industry that dominates land use in the region. (Author)

Percepción y conocimiento ambiental en la costa de Quintana Roo: una caracterización a través de encuestas

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Lilia Susana Padilla y Sotelo

2012-02-01

Full Text Available Este trabajo tiene por objeto indagar acerca de la percepción ambiental y el nivel de conocimientos sobre aspectos ambientales en cuatro localidades representativas de la costa de Quintana Roo: Cancún, Playa del Carmen, Tulúm y Chetumal; en ese sentido, se estudia la relación existente entre algunos elementos microsociales en el espacio económico del turismo, respecto al estado del medio ambiente en la costa de Quintana Roo, como factores subjetivos influyentes en características objetivas del espacio geográfico. La investigación se desarrolló en dos pasos fundamentales, primero la realización y el procesamiento de entrevistas entre los pobladores, mediante las cuales se detectó la existencia de percepciones diferentes según los patrones de interacción social de grupos de individuos, dados por el carácter de su actividad práctica socioproductiva, o de los servicios que realizan, e incluso por su nivel educacional. Esta situación se reproduce en el ámbito geográfico en cuanto a localidades, revelado en un segundo momento de la investigación, lo cual se relaciona con la diferente dinámica del desarrollo económico y social de cada una de las localidades en cuestión. El trabajo resulta, en primera instancia, un análisis que facilita el acercamiento a las necesidades de la educación ambiental como proceso educativo, que oriente la participación popular en la solución de problemas ambientales inherentes a la emergencia del desarrollo del turismo en la costa de Quintana Roo y a factores concomitantes.

Flora planctónica de laguna Lagartos, Quintana Roo Planktonic flora from Lagartos Lagoon, Quintana Roo

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Viridiana Margarita Nava-Ruiz

2012-09-01

Full Text Available Se presenta una lista de la flora planctónica de la laguna Lagartos, basada en la observación de muestras superficiales obtenidas entre noviembre de 2007 a septiembre de 2008. Las muestras se recolectaron con una botella Van Dorn de 2 litros en la parte central de la laguna; se registraron 67 taxa: 28 Bacillariophyta, 22 Cyanoprokaryota, 7 Chlorophyta, 6 Dinoflagellata, 2 Euglenophyta y 2 Cryptophyta. Las cianofitas dominaron durante todo el periodo de estudio, con una contribución mayor al 80% de la abundancia total del fitoplancton. Son nuevos registros para México 13 especies: Chroococcus pulcherrimus, Coelosphaerium confertum, Cyanodyction iac, Phormidium pachydermaticum, Planktolyngbya contorta, Rhodomonas minuta, Amphidinium massartii, Ensiculifera cf. loeblichii, Heterocapsa cf. pseudotriquetra, Prorocentrum cassubicum, Licmophora normaniana, Fistulifera saprophila y Amphora richardiana. Todos los taxa listados se ilustran con microfotografías.The planktonic flora from Lagartos Lagoon, Quintana Roo, was examined based on the observation of samples collected from November 2007 to September 2008. The superficial samples were collected with a Van Dorn bottle of 2 L, in the core part of the lagoon. A total of 67 taxa were identified: 28 Bacillariophyta, 22 Cyanoprokaryota, 7 Chlorophyta, 6 Dinoflagellata, 2 Euglenophyta and 2 Cryptophyta. Nevertheless, the blue green algae dominated during all study period, with more of 80% to the total abundance of the phytoplankton. The species Chroococcus pulcherrimus, Coelosphaerium confertum, Cyanodyction iac, Phormidium pachydermaticum, Planktolyngbya contorta, Rhodomonas minuta, Amphidinium massartii, Ensiculifera cf. loeblichii, Heterocapsa cf. pseudotriquetra, Prorocentrum cassubicum, Licmophora normaniana, Fistulifera saprophila and Amphora richardiana were recorded for the first time in Mexico. All the taxa are illustrated with microphotographs.

Diversidad y origen geográfico del recurso vegetal en los huertos familiares de Quintana Roo, México

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Jesus Kantún-Balam

2015-08-01

Full Text Available El huerto familiar (HF es un sistema agrícola que funciona como fuente de recursos naturales y sitio para el manejo y conservación de especies vegetales nativas e introducidas. Un ejemplo de su importancia se presenta en el área maya de la península de Yucatán, México. La conquista española es un aspecto fundamental en el desarrollo y evolución del HF, evento que favoreció la introducción de especies vegetales, lo que contribuyó a enriquecer y diversificar la flora del HF de la región. Actualmente, esta introducción es un proceso favorecido por la globalización comercial, fenómeno que ha generado cambios en el HF debido al abandono de las actividades del campo y a la búsqueda de recursos económicos fuera de éste. En la península de Yucatán se observa con mayor claridad en el estado de Quintana Roo, en donde el desarrollo socioeconómico ha favorecido que muchos campesinos mayas emigren de sus comunidades para buscar trabajo en las zonas turísticas. Para conocer el estado actual del recurso vegetal, se estudió la diversidad y origen geográfico de las especies vegetales presentes en el HF de Quintana Roo. Se caracterizaron 120 HF en tres regiones del estado: norte, maya y sur. Se registraron 449 especies correspondientes a 93 familias y 329 géneros. La familia mejor representada fue la Fabaceae con el 9.35% y el género mejor representado fueCitruscon el 2.0%. La región con mayor diversidad fue el norte (H’= 5,684. Las especies introducidas fueron principalmente de origen americano (65,8%. Recientemente, la globalización ha favorecido la introducción de especies de origen asiático, como el nim (Azadirachta indica y el rambután (Nephelium lappaceum. Esto muestra la importancia de este fenómeno en la riqueza y diversidad actual de los huertos familiares de Quintana Roo.

Factores familiares asociados a codependencia en enfermeras de un hospital de Cancún, Quintana Roo, México

OpenAIRE

Ramírez-Amaro, Margarita; Martínez-Torres, Jorge; Ureña Bogarín, Enrique Leobardo

2014-01-01

Objetivo: Identificar los factores familiares asociados a la presencia de codependencia en las enfermeras de un hospital regional en Cancún, Quintana Roo, México. Diseño: Estudio transversal, comparativo. Emplazamiento: Ciudad de Cancún (México). Participantes: Mediante un muestreo aleatorizado se seleccionaron 200 enfermeras que cumplieron los criterios de selección (tener pareja de más de un año, acudir a trabajar el día de la entrevista, tener contrato laboral al momento del estud...

NUMERICAL MODELS AS TOOLS TO UNDERSTAND THE DYNAMICS IN BAYS: CASE OF STUDY CHETUMAL BAY, QUINTANA ROO

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David Avalos-Cueva

2017-07-01

Full Text Available In this study performed the simulation of currents generated by the wind on the Bay of Chetumal, Quintana Roo through the use of a stationary shallow-water model. A homogeneous climatic wind was used for the entire Bay, with a velocity of 3m·s-1 , and directions North, South, Northeast, Northwest, East, Southeast, Southwest and West. The results showed a rather complex dynamics in Chetumal Bay, in which important turns were observed in deep areas, with speeds reaching up to 13 cm·s-1 .

Preliminary Geochemical and Rock Magnetic Study of a Stalagmite From Quintana Roo, Northeastern Yucatan Peninsula

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Urrutia-Fucugauchi, J.; Perez-Cruz, L.; Zhao, X.; Rebolledo-Vieyra, M.; Rodriguez, A.

2012-04-01

We present the preliminary results of geochemical, stable isotopes and rock magnetic studies of a stalagmite from a cave in eastern Quintana Roo, northern Yucatan peninsula. In the past years, there has been increased interest in understanding the paleoclimatic and paleoenvironmental evolution of the Yucatan peninsula and northern Central America, investigating the relationships between climate variations and the development of the Maya civilization. In particular, the variations in regional precipitation and occurrence of several drought periods, which might have been related to the collapse of the Classic Maya period. Stable isotope data on speleothems from different sites in Yucatan and Central America have provided evidence on changes in precipitation, which have affected the Maya region. The stalagmite is ~47 cm long and about 4-5 cm wide at its base. It was collected from the Hilariós Well cave in Tulum, Quintana Roo. Magnetic susceptibility and geochemical analyses have been completed as part of the initial characterization of the stalagmite, with measurements taken every centimeter. Geochemical analyses have been carried out for x-ray fluorescence, with a Niton XRF analyzer. Magnetic susceptibility was determined with a Bartington MS2 instrument using the high resolution surface probe. Additional rock magnetic analyses include magnetic hysteresis loops and isothermal remanent magnetization (IRM) acquisition, and saturation IRM demagnetization, which have been measured with a MicroMag instrument. Hysteresis loops are diamagnetic, with small varying low-coercivity ferromagnetic components. The elemental compositions of major oxides and trace elements vary with depth. Calcium is the major element and displays a pattern of small amplitude fluctuations with a trend to lower values at the bottom, which are also shown in other elements such as barium. Silica and elements such as titanium and strontium are positively correlated and show an apparent cyclic pattern

Milenarismo y profecía en la etnogénesis de los macehualob de Quintana Roo, México

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Barabas, Alicia M.

2013-01-01

Note portant sur l'auteur La lectura de La Guerra de Castas de Nelson Reed (1964, 1971) fue la primera en llamar mi atención hacia la masiva insurrección y el culto de la Cruz Parlante, protagonizados por los mayas a partir de la segunda mitad del siglo xix. Paulatinamente, el conocimiento local y foráneo acumulado sobre la cultura e historia mayas, especialmente sobre la guerra, y el trabajo de campo que desarrollábamos en los pueblos macehualob de Quintana Roo, nos convencieron de que estáb...

Effects of Point Count Duration, Time-of-Day, and Aural Stimuli on Detectability of Migratory and Resident Bird Species in Quintana Roo, Mexico

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James F. Lynch

1995-01-01

Effects of count duration, time-of-day, and aural stimuli were studied in a series of unlimited-radius point counts conducted during winter in Quintana Roo, Mexico. The rate at which new species were detected was approximately three times higher during the first 5 minutes of each 15- minute count than in the final 5 minutes. The number of individuals and species...

Abundancia y tallas de Menippe mercenaria (Crustacea: Brachyura, en refugios artificiales en Quintana Roo, México

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Adrián Cervantes-Martínez

2001-12-01

Full Text Available En Florida y Cuba el cangrejo moro Menippe mercenaria (Say, 1818 se encuentra sometido a fuertes presiones de pesca; sin embargo en el Caribe Mexicano se considera como un recurso subexplotado. Debido a que existen pocas evaluaciones del cangrejo como un recurso alternativo en la región, se emplearon hábitats artificiales ("condominios cubanos", considerando tres temporadas de muestreo y cuatro sectores con el propósito de conocer la abundancia relativa, estructura de tallas, relación entre la longitud de quela-ancho del carapacho y aspectos poblacionales de estos organismos en la Bahía de la Ascensión, Quintana Roo, México. La abundancia varió de acuerdo a la estación y temporada de muestreo: el sector sur de la bahía y la temporada de nortes (enero a marzo presentaron la mayor abundancia relativa. La amplitud del carapacho fue directamente proporcional a la longitud de la quela (r² = 0.83, 0.97 y 0.89, pIn Florida and Cuba the stone crab Menippe mercenaria (Say, 1818 is under strong fishing-pressure; nevertheless in the Mexican Caribbean it is considered as sub-utilized and poorly known resource. Artificial shelters ("condominios cubanos" were used to study relative abundance, age structure, claw length-carapace amplitude relation, and population in three seasons and four sectors at Bahia Ascension, Quintana Roo, Mexico. The abundance varied according to the sector and sampling season: population was higher in the south and during the north wind ("Nortes" season (January to March. The carapace amplitude was directly proportional to claw length (r² = 0.83, 0.97 and 0.89; p< 0.05 in females, males and total, respectively. The results sugest that specimens with 37.5 and 67.5 mm of carapace amplitude are the most limited regarding refuge availability in the Bay

La zonificación y su aplicación en las Áreas Naturales Protegidas de uso Turístico de Quintana Roo

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Romano Gino Segrado Pavón

2010-01-01

Full Text Available El presente estudio expone los hallazgos de la aplicación de la técnica de zonificación en las Áreas Naturales Protegidas (ANP de uso turístico del estado de Quintana Roo. La identificación de las ANP de uso turístico se realizó por medio de la revisión de documentos oficiales, mediante solicitudes de información a las instituciones públicas encargadas de la protección o administración de dichas áreas, con el apoyo de la Ley Federal de Transparencia y Acceso a la Información Pública Gubernamental (LFTAIPG.Como resultado, se determinó que sólo un porcentaje limitado de las ANP del estado de Quintana Roo ha realizado estudios de zonificación, aunque tengan uso turístico intensivo y cobren una cuota de acceso al sitio. Finalmente, si bien existen leyes y reglamentos que protegen las ANP, la falta de aplicación de la zonificación, junto con el uso turístico, aceleran el proceso de deterioro de estas áreas, por lo que se propone dicha técnica básica de protección para estos lugares.

Cucullanus pargi sp. n. (Nematoda: Cucullanidae) from the grey snapper Lutjanus griseus off the southern coast of Quintana Roo, Mexico.

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González-Solís, David; Tuz-Paredes, Vielka M; Quintal-Loria, Miguel A

2007-09-01

A new nematode species, Cucullanus pargi sp. n., is described from the intestine and pyloric caeca of the grey snapper, Lutjanus griseus (Linnaeus), off the southern Quintana Roo coast, Mexico. This species shows similar morphological features as cucullanids occurring in marine and brackish-water fishes; however, it differs from all other species in the length of spicules, arrangement and number of caudal papillae, position of the excretory pore and deirids. Cucullanus pargi is the third species of this genus described from fishes in Mexico and the second one from Mexican marine fishes.

Mamíferos terrestres de la Reserva de la Biosfera de Sian Ka’an, Quintana Roo, México

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Carmen Pozo de la Tijera

1999-06-01

Full Text Available Con base en el muestreo de siete localidades y una extensa revisión bibliográfica, se obtuvo la lista de especies de mamíferos terrestres de la Reserva de la Biosfera de Sian Ka’an estado de Quintana Roo, México. Durante 57 días de campo, se utilizaron trampas Sherman, Tomahawk, redes de niebla y escopetas, se registraron rastros y observaciones directas. Se registraron 70 especies, ocho órdenes, 22 familias y 57 géneros. Se encontraron seis especies como nuevos registros: Marmosa mexicana, Micronycteris microtis, Micronycteris schmidtorum, Eptesicus furinalis, Rhogeessa parvula y Ototylomys phyllotis. Doce especies son catalogadas bajo algún riesgo ecológico según la Norma Oficial Mexicana; trece especies son endémicas a Mesoamérica y una endémica de México. Se presentan cuadros de abundancia relativa, registro por localidades y por tipo de vegetación de cada especie.Based on sampling at seven localities and an extensive bibliographic research, we present a species list of terrestrial mammals of the Sian Ka’an Biosphere Reserve, Quintana Roo, Mexico. During 57 days of fieldwork we used Sherman and Tomahawk traps, mist nets, rifles, collected data of trails and made direct observations. We recorded 70 species, eight orders, 22 families, and 57 genera. Six new records are added: Marmosa mexicana, Micronycteris microtis, Micronycteris schmidtorum, Eptesicus furinalis, Rhogeessa parvula, and Ototylomys phyllotis. Twelve species are listed as threatened following the Official Mexican Norm: Tamandua mexicana, Micronycteris brachyotis, Lonchorhina aurita, Alouatta pigra, Ateles geoffroyi, Herpailurus yagouaroundi, Leopardus pardalis, Leopardus wiedii, Panthera onca, Eira barbara, Potos flavus and Tapirus bairdii. Thirteen species are endemic to Mesoamerica: M. mexicana, T. mexicana, Mormoops megalophylla, Tonatia evotis, Bauerus dubiaquercus, A. pigra, A. geoffroyi, T. bairdii, Sciurus deppei, Sciurus yucatanensis, Heteromys gaumeri

[Databases for surgical specialists in Cancún, Quintana Roo].

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Contla-Hosking, Jorge Eduardo; Ceballos-Martínez, Zoila Inés; Peralta-Bahena, Mónica Esther

2004-01-01

Our aim was to identify the level of knowledge of surgical health-area specialists in Cancún, Quintana Roo, Mexico, from the personal productivity database. We carried out an investigation of 37 surgical specialists: 24 belonged to the Mexican Social Security Institute (IMSS), while 13 belonged to the Mexican Health Secretariat (SSA). In our research, we found that 61% of surgical health-area specialist physicians were familiar with some aspects of the institutional surgical registry, including the following: 54% knew of the existence of a personal registry of surgeries carried out, and 43% keep a record of their personal activities. From the latter percentage, 69% of surgical health-area specialist physicians mentioned keeping their records manually, while 44% used the computer. Results of the research suggest that these physicians would like to have some kind of record of the surgeries carried out by each. An important percentage of these specialists do not keep a personal record on a database; due to this lack of knowledge, we obtain incorrect information in institutional records of the reality of what is actually done. We consider it important to inform surgical specialists concerning the existence of personal institutional records in database form or even of record done manually, as well as correct terminology for the International Codification (CIE-9 & 10). We inform here of the need to encourage a culture in records and databases in the formative stage of surgeon specialists.

Las playas de Quintana Roo: sus riesgos y vulnerabilidad.

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Daniel Torruco Gómez

2013-01-01

Full Text Available Las playas son sistemas donde se ejercen presiones antrópicas y ambientales, en este estudio se analizaron sus condiciones bioeconómicas con la finalidad de obtener un modelo que permita determinar el grado de vulnerabilidad y la matriz de riesgo en las playas del Estado de Quintana Roo para un mejor uso sustentable. Se formularon matrices con registros biológicos y socioeconómicos obtenidos entre el 2009 y 2010 en temporadas de alto registro turístico, obteniendo 17 variables en 20 playas analizadas. La evaluación se efectuó con el modelo semiparamétrico del tipo KSIM con dos escenarios: uno sin control/restricción en el desarrollo costero y otro con las mismas características pero con decremento en demanda turística por baja calidad ambiental. Los resultados mostraron un marcado descenso en playas arenosas y costas rocosas. En el modelo se hace referencia a la importancia de los procesos de las playas y su interrelación con los factores biológicos, sociales y económicos más importantes, proporcionando una visión integral de todas las variables. Se recomienda incrementar el modelo dándole mayor envergadura, integrando a las instituciones que influyen en el control de las acciones en estas playas, lo que dará un mejor referente y monitoreo a corto, mediano y largo plazo.

Violencia de pareja: tipo y riesgos en usuarias de atención primaria de salud en Cancún, Quintana Roo, México

OpenAIRE

Luis Sandoval-Jurado; María Valeria Jiménez-Báez; Gloria Rovira Alcocer; Omar Vital Hernandez; Fany Guadalupe Pat Espadas

2017-01-01

Objetivo: Identificar la prevalencia y el tipo de violencia de pareja en mujeres usuarias de una unidad de atención primaria y estimar los riesgos para cada tipo de violencia. Diseño: Casos (incidentes) y controles. Emplazamiento: Unidad de atención primaria en Cancún, Quintana Roo, México. Participantes: Mujeres mayores de 18 años con vida en pareja en los últimos 12 meses. Mediciones principales: Mediante escala para identificación de violencia validada para población mexicana, ...

[Abundance and body size of Menippe mercenaria (Crustacea: Brachyura), in artificial refuges in Quintana Roo, Mexico].

Science.gov (United States)

Cervantes-Martínez, A; Ramírez-González, A

2001-01-01

In Florida and Cuba the stone crab Menippe mercenaria (Say, 1818) is under strong fishing-pressure; nevertheless in the Mexican Caribbean it is considered as sub-utilized and poorly known resource. Artificial shelters ("condominios cubanos") were used to study relative abundance, age structure, claw length-carapace amplitude relation, and population in three seasons and four sectors at Bahía Ascension, Quintana Roo, Mexico. The abundance varied according to the sector and sampling season: population was higher in the south and during the north wind ("Nortes") season (January to March). The carapace amplitude was directly proportional to claw length (r2 = 0.83, 0.97 and 0.89; p < 0.05 in females, males and total, respectively). The results suggest that specimens with 37.5 and 67.5 mm of carapace amplitude are the most limited regarding refuge availability in the Bay.

Concepciones culturales, género y migración entre mayas yucatecos en Cancún, Quintana Roo

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Adriana Leona Rosales Mendoza

2009-01-01

Full Text Available Este artículo presenta algunos elementos que contribuyen a mantener la memoria cultural en mayas peninsulares inmigrantes en Cancún, Quintana Roo. Refiero algunas concepciones culturales (rituales, leyendas y concepciones que permiten a inmigrantes de esta etnia continuar reproduciendo y perpetuando su sentido de pertenencia étnica en ese polo turístico. Los testimonios que se presentan corresponden a cinco entrevistas efectuadas con mujeres procedentes del oriente del estado de Yucatán (X-Can, Temax, Espita, Tunkás, Dzitás, Chemax y Valladolid durante el proceso de investigación para elaborar mi tesis de doctorado. Las reflexiones para la elaboración de este artículo surgieron en el proceso de dicha investigación y en observaciones de campo posteriores, en las cuales fue posible profundizar en relatos sobre los rituales de chaa chac y hetz-mek, la leyenda Xtabay, el sentido conferido al corazón, y la denominada "metáfora de los ojos de venado".This article presents elements of symbolic discourse that contribute to the maintenance of cultural memory in Peninsular Mayan immigrants to Cancun, Quintana Roo, Mexico. I refer to certain (rituals, legends and conceptions that allow immigrants of this ethnicity to continue reproducing and perpetuating their sense of being Mayan in Cancun, a city which is a magnet for national and international tourism. The testimonies presented are taken from five interviews carried out with women from the eastern part of Yucatan (X-Can, Temax, Espita, Tunkas, Dzitas, Chemax and Valladolid, carried out during research for my doctoral dissertation. The reflections for this article emerged from this research process and later field observations, in which it was possible to explore further the narratives about the chaa chac and hetz-mek rituals, the Xtabay legend, the meaning placed on the heart and the metaphor I have named "deer eyes".

Founding Amerindian mitochondrial DNA lineages in ancient Maya from Xcaret, Quintana Roo.

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González-Oliver, A; Márquez-Morfín, L; Jiménez, J C; Torre-Blanco, A

2001-11-01

Ancient DNA from the bone remains of 25 out of 28 pre-Columbian individuals from the Late Classic-Postclassic Maya site of Xcaret, Quintana Roo, was recovered, and mitochondrial DNA (mtDNA) was amplified by using the polymerase chain reaction. The presence of the four founding Amerindian mtDNA lineages was investigated by restriction analysis and by direct sequencing in selected individuals. The mtDNA lineages A, B, and C were found in this population. Eighty-four percent of the individuals were lineage A, whereas lineages B and C were present at low frequencies, 4% and 8%, respectively. Lineage D was absent from our sample. One individual did not possess any of the four lineages. Six skeletons out of 7 dated from the Late Classic period were haplotype A, whereas 11 skeletons out of 16 dated from the Postclassic period were also haplotype A. The distribution of mtDNA lineages in the Xcaret population contrasts sharply with that found in ancient Maya from Copán, which lack lineages A and B. On the other hand, our results resemble more closely the frequencies of mtDNA lineages found in contemporary Maya from the Yucatán Peninsula and in other Native American contemporary populations of Mesoamerican origin. Copyright 2001 Wiley-Liss, Inc.

Ideal citizens: the birthing of state truths and fictions in Quintana Roo.

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Williams, Sarah A

2016-12-01

Reducing the maternal mortality rate (MMR) is an important part of Mexico's commitment to the Millennium Development Goals, and the country has made great strides towards achieving this goal. However, researchers have questioned to what extent the focus on improved MMR and other indices of maternal health has contributed to an emphasis on improved statistics rather than quality care, and the effect this has had on the quality of reporting. While public health officials and hospital administrators alike agree that improved obstetric reporting is necessary, there is little discussion regarding the accuracy of the data that are submitted and the institutional pressures that may contribute to the production of inaccurate data. Using ethnographic research collected in Tulum, Quintana Roo, this paper explores how biomedical childbirth functions as a source of legitimization for the state while simultaneously providing the means for the presentation of an ideal subjecthood, one that situates birthing women and healthcare personnel as properly attenuated to the norms and needs of the modern Mexican state. By highlighting the point of disjuncture between women's experiences and the formal 'reality' created through hospital texts, this paper explores the place of biomedical birth as a producer of and legitimization for Mexican public health policy.

Tenure, tourism and timber in Quintana Roo, Mexico: Land tenure changes in forest Ejidos after agrarian reforms

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James A. Barsimantov

2009-09-01

Full Text Available We present and apply an analytical framework for understanding land tenure change in the wake of radical land policy modifications in Mexico’s communal tenure system. We posit that the changes in land tenure vary as a result of a complex interplay of drivers external and internal to the land tenure unit. Using interview and socio-economic data, we apply this framework to six ejidos in Quintana Roo, Mexico in order to understand the extent to which these ejidos have shifted towards private individual property as promoted in the 1992 amendment of Article 27 of the Mexican Constitution. In our case study ejidos, we conclude that external factors, including community forestry, tourism, and urbanization, have synergized with factors internal to the ejido, such as ethnicity, livelihood strategies, migration, and attitudes, leading to different trajectories in land tenure arrangements.

Nuevo registro del loro frente blanca (Amazona albifrons para la Isla de Cozumel, Quintana Roo, México

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Alexis Herminio Plasencia Vázquez

2012-01-01

Full Text Available Reportamos, por primera vez en la literatura científica, al loro frente blanca (Amazona albifrons como especie introducida en áreas urbanas de la Isla de Cozumel, Quintana Roo, durante el trabajo de campo realizado en el mes de abril de 2011. Su presencia sólo en áreas urbanas de la isla, la capacidad de la especie para poder vivir con éxito en áreas urbanas, la abundancia de árboles frutales y su uso como mascota por los isleños nos permite sugerir que los individuos registrados son resultado de escapes o fueron liberados por sus dueños. Es probable que las condiciones sean favorables para el establecimiento de una población dentro del poblado de San Miguel de Cozumel, lo que debe monitorearse en el futuro.

Dental health and alimentation among the Quintana Roo Mayas: coastal and inland sites of the classic-postclassic periods.

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Ortega-Muñoz, Allan

2015-01-01

The goal of this study is to compare both dental and skeletal stress indicators of the Classic and Postclassic coastal and inland sites of the State of Quintana Roo, Mexico. The hypothesis is that coastal populations will show osteo and dental pathologies characteristic of a primarily marine food source combined with a diet of horticultural resources. This kind of alimentation provides people with less environmental stress and therefore a better health status. However, over time, in the Postclassic period, the health conditions deteriorated among both coastal and inland inhabitants, according to the hierarchization of the society, militarization, and commercial activities of all the coastal sites. The sample was drawn from 19 sites (196 individuals of both sexes) from the east coast of the Yucatan Peninsula, as well as from inland localities within the boundaries of Quintana Roo. Both dental and osteological stress indicators were analyzed, and crosstabs were applied for absolute and relative frequencies and their corresponding χ(2) and F Fisher analyses. The osteopathological index of the coastal and inland sites of the Classic period were compared over time between the Classic coastal inhabitants and the Postclassic coastal inhabitants so as to understand how life conditions changed over time. The Mantel-Haenszel odds ratio, with the crosstabs controlling for sex (males and females), was also carried out. There are low frequencies of dental pathologies and anemia present in both the coastal and inland populations of Quintana Roo in the Classic and Postclassic times. Only the presence of periostitis is highly common in both types of site, and this is the only indicator with significant differences. The dental pathologies, anemia and periostitis, in general, present a slight upward trend in both the coastal and inland populations over time. The coastal populations have fewer frequencies of the above than the inland sites whilst, in the Postclassic period, both the

EVALUACIÓN DE LOS PROGRAMAS DE CRÉDITO A PROYECTOS PRODUCTIVOS DE MUJERES EN TABASCO, CAMPECHE Y QUINTANA ROO

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Esperanza Tuñón Pablos

2010-01-01

Full Text Available En este texto se evalúa el impacto en las condiciones socioeconómicas, calidad de vida y proceso de empoderamiento de las beneficiarias de los programas de crédito a proyectos productivos para mujeres desarrollados entre 2000 y 2003 por cuatro dependencias federales (Sedesol, CDIINI, Fonaes y SRA en los estados de Tabasco, Campeche y Quintana Roo. Así mismo, se valoran las oportunidades de desarrollo individual, familiar y comunitario de las mujeres que participan en dichos proyectos, se identifican las características de operación de los programas a fin de detectar deficiencias en su desempeño, y se sugieren alternativas viables para mejorar la implementación y el impacto social de los mismos.

Anatomía y usos de la madera de ocho especies tropicales de Quintana Roo, México

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Silvia Rebollar

1998-12-01

Full Text Available Se estudió la anatomía de la madera de ocho especies procedentes de asociaciones secundarias de las selvas alta y mediana subperennifolia del estado de Quintana Roo: Acacia gaumeri, Diphysa carthagenensis Gliricidia sepium, Leucaena glauca, Senna racemosa, Murraya paniculata, Maytenus guatemalensis, y Pimenta dioica, de acuerdo con la metodología establecida. Son especies de interés por su distribución, abundancia en el estado, y por los usos que tradicionalmente les han dado los campesinos mayas en postería, cercas, construcción rural durmintes, tablones y leña, debido a las cualidades de dureza y resistencia a la humedad y a los insectos. Las especies presentan porosidad difusa, los vasos con puntuaciones areoladas opuestas y alternas, la placa perforada es simple; el parénquima axial se presenta aliforme y en bandas; con cristales en todas las especies a excepción de Acacia gaumeri y Senna racemosa. Los rayos son bajos finos y numerosos; las fibras son de tipo libriforme. Las diferencias encontradas son: el arreglo de los poros, tipo de parénquima axial y radial, la presencia de fibrotraqueidas y traqueidas vasculares y tílides.This paper describes the wood anatomy of Acacia gaumeri Blake, Diphysa carthagenensis Jacq., Gliricidia sepium (Jacq. Steud., Leucaena glauca (L. Benth., Senna racemosa (Mill Irwin & Barneby, Murraya paniculata L.Mant., Maytenus guatemalensis Lundell, and Pimenta dioica (L. Merr. These species are aesthetically attractive as well as hard, highly durable and resistant to insects and locally are widely used in posts, fences, sleepers and rural buildings. Samples were collected from the rainforest in Quintana Roo, Mexico. One tree for each species was collected, and macroscopic and microscopic characteristics were described and measured in wood samples, permanent slides and macerated material. Woods have diffuse porosity, simple perforation plates, alternate and opposite vessel pits and small rays. Crystals

Introduction of coconut palm nectar with value added in the tourism región of Quintana Roo

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Félix Rogelio Flores

2008-03-01

Full Text Available The coconut palm as consumption product has in other regions of the world an impact that could generate opportunities of economic growth in our country. To generate strategies of production, consumption and permanence of the coconut palm in the market, is a proposal that arises within the framework that INIFAP and Universidad de Colima and the School of Marketing beginning in 2006 up to this days. Through this document, is developing the main characteristics of the coconut palm, a proposal of standardization in the process of elaboration and pop marketing from the experiences obtained in Quintana Roo INIFAP research center and the marketing’s knowledge. Also are explained the processes which must be carried out for a similar process in any coconut region of Mexican country. This report is concluded with a model of competitiveness for the commercialization of the coconut palm.

Using Landsat 5 TM Data to Identify and Map Areas of Mangrove in Tulum, Quintana Roo, Mexico

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Meachum, Samuel Standish

Mangroves are recognized worldwide as a major ecosystem that provides significant ecosystem services. They are threatened due to rising pressures from human overpopulation and economic development. The Caribbean Coast of Mexico's Yucatan Peninsula contains mangrove habitat that have been negatively impacted by the development of the region's tourist industry. However, little research has been done to map and quantify the extent of mangrove in the region. This study used remote sensing techniques to identify mangrove in the Municipality of Tulum located in Quintana Roo, and to produce an accurate vector based thematic map that inventories these areas. Anatomical differences were analyzed and related to high-resolution field spectral data for each mangrove species. A vector map of mangrove habitat, including areas of inland mangrove, was produced with an overall accuracy of 88%. The 19,262 ha. of mangrove identified by this study represents a 140% increase in area over previous studies.

[Composition, distribution and abundance of gastropod larvae in the South of Quintana Roo,Mexico and north of Belice].

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Oliva Rivera, J; de Jesús Navarrete, A

2000-12-01

To know the composition, abundance and distribution of gastropod larvae, monthly samplings were carried out in the south of Quintana Roo, Mexico and north of Belize, from April to December, 1996. Collections were made in six sites at Chinchorro Bank, four in the South Coast and six at Hol-Chan, Belize, between the 10 and 20 hrs. At each station 2.5 m3 of seawater were pumped through a 202 microns mesh; 27 species were identified. The most abundant species were: South Coast, Rissoina sp. 1., Limacina sp. 1 and Natica sp. 1, Chinchorro Bank, Limacina sp. 1, Creseis acicula, Cerithiopsis hero and Rissoina sp. 1 and Hol-Chan, Limacina sp. 2, Alaba incerta and Rissoina sp. 1. The highest abundance was in rainy season. Apparently the presence of winds, coastal currents and food availability, control the distribution and abundance of larvae.

A Regional-Scale Groundwater Model Supporting Management of the Sian Ka'an Biosphere Reserve and its Catchment, Quintana Roo, Mexico

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Neuman, B. R.; Merediz Alonso, G.; Rebolledo Vieyra, M.; Marin, L.; Supper, R.; Bauer-Gottwein, P.

2007-05-01

The Caribbean Coast of the Yucatan Peninsula is a rapidly developing area featuring a booming tourism industry. The number of hotel rooms in the Riviera Maya has increased from 2600 in 1996 to 26,000 in 2005, while the total population in the Mexican federal state of Quintana Roo has grown from 500,000 in 1990 to 1,115,000 in 2005. This explosive growth threatens the region's water resources, which primarily consist of a less than 50m thick freshwater lens residing in the regional karst aquifer underlying the entire Yucatan Peninsula. The Sian Ka'an Biosphere Reserve, a 6400 km2 combined marine/terrestrial nature protection area is situated south of Tulum (approx. 87.3° - 88° W, 19° - 20° N). The site is listed as a UNESCO world heritage site and is protected under the Ramsar Convention. It includes extensive freshwater wetlands, saline/brackish mangrove swamps, tropical rainforests and parts of the world's second largest coral reef. The freshwater supply to the system occurs primarily via subsurface inflow. Large freshwater springs emerge through vertical sinkholes (cenotes) in the lagoons of Sian Ka'an. Management of this unique ecosystem in view of the rapid development and urbanization of the surrounding areas requires detailed knowledge on the groundwater flow paths in and around the reserve. Moreover, mapping and delineation of its groundwater catchment zone and groundwater traveling time zones is essential. To this end, a regional-scale steady-state groundwater flow model of the Sian Ka'an Biosphere reserve and its catchment was developed. The model is implemented in MIKE SHE with a finite-difference cell size of 1 km2 and is driven with temporally averaged climate forcings. The karst aquifer is treated as an equivalent porous medium. Darcy's law is assumed to be valid over regional scales and the main structural elements of the karst aquifer are included in the model as zones of varying hydraulic conductivity. High conductivity zones in the Sian Ka

Radiological analysis of environmental samples in some points of the coast of the Gulf of Mexico and Coast of Quintana Roo, Mexico

International Nuclear Information System (INIS)

Salas Mar, Bernardo; Martinez Negrete, Marco Antonio; Ruiz Chavarria, Gerardo; Abarca Munguia, Jose

2008-01-01

Full text: We describe in this paper the results obtained by the project 'Radiological analysis of environmental samples in some points of the coast of the Gulf of Mexico and coast of Quintana Roo, Mexico'. The purpose of the study is to identify and quantify the natural and anthropogenic radionuclides present from sediments, sand and seawater from several sites located along the coast of the Gulf of Mexico and the Caribean Sea. The samples are analysed in a Canberra Multichannel analyzer system for gamma spectrometry, equipped with a detector of hyper pure germanium and a Genie 2000 software, in the 'Laboratory of Radiological Analysis of Environmental Samples', belonging to the Physics Department, Faculty of Sciences, National Autonomous University of Mexico (UNAM). The geographic sites were samples were taken include the states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan and Quintana Roo. The results of this studies will be published at the end of the project and we hope they will be useful for the national health and industrial sectors. Until now we have identified and measured the presence of natural radionuclides such as Potassium-40 (K-40), Bismuth 212 (Bi-212), Lead-212 (Pb-212), Bismuth-214 (Bi-214), Lead-214 (Pb-214), Radium-226 (Ra-226), Actinium 228 (Ac-228), Uranium-235 (U-235), as well as some anthropogenic radionuclides found near the Laguna Verde Nuclear Power Plant. The project is scheduled to last for three years, finishing in 2009. At its ending we shall be able to present conclusions and identify some tendencies, in connection with the background and possible radioactive contamination of the studied zones. This project takes place under the auspice of the 'Program of Support to Projects of Research and Technological Innovation' of the National Autonomous University of Mexico. (author)

Variables asociadas con el uso de hábitat del manatí del Caribe (Trichechus manatus, en Quintana Roo, México (Mammalia

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Javier Axis-Arroyo

1998-09-01

Full Text Available La influencia de: temperatura atmosférica y del agua, vientos, nubosidad, profundidad, salinidad, abundancia de pastos y algas, y estructura de grupo; en la distribución espacial de Trichechus manatus manatus, fue estudiada en la Bahía de Chetumal, Quintana Roo, México; de noviembre de 1994 a junio de 1995. Las variables con menor asociación fueron: nubosidad y temperatura atmosférica y del agua (en contraste con lo reportado para la subespecie de Florida, Trichechus manatus latirostris; las variables con asociación moderada fueron: salinidad (como en Florida, profundidad (uso frecuente de profundidades entre 0.80 y 2 m y estructura de grupo (lo cual sugiere que la zona no es importante como área de apareamiento. La distribución espacial fue asociada principalmente con cambios drásticos en la intensidad del viento y con el alimento disponible (similar a trabajos previos realizados en México.Influence of atmospheric variables and water temperature, winds, cloudiness, depth, salinity, grass and algal abundance, and group structure on the spatial distribution of Trichechus manatus manatus was studied in Chetumal Bay, Quintana Roo, Mexico. Boat surveys were done from November 1994 trough June 1995. There was little association with cloudiness and atmospheric and water temperature (in contrast with reports for the Florida subspecies, Trichechus manatus latirostris; the variables with moderate association were salinity (as in Florida, depth (frequent use of depths between 0.80-2 m and group structure (which suggests that the zone is not an important mating area. Spatial distribution was more associated with drastic changes in wind intensity and the available food (similar to previous works in Mexico.

Associated Factors to Seroprevalence of Ehrlichia spp. in Dogs of Quintana Roo, Mexico

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Pedro Pablo Martínez-Vega

2016-01-01

Full Text Available The objective of this study was to determine the seroprevalence to Ehrlichia spp. in dogs from Xcalak, Quintana Roo, Mexico, and the associated factors. Serum samples were obtained from 118 dogs and used in an indirect immunofluorescent assay test for the detection of antibodies against Ehrlichia spp. A questionnaire was used to obtain information about possible variables associated with seroprevalence. These variables were analyzed through Chi2 test and logistic regression. Dog seroprevalence of antibodies against Ehrlichia spp. was 64% (75/118. Fifty-two percent (61/118 of dogs had tick infestation which was identified as Rhipicephalus sanguineus sensu lato. Anemia was observed in 36% of dogs. Leucopenia (2.5%, thrombocytopenia (70%, and hemorrhage (14% were also observed. Thirty-one percent (23/75 of dogs with anemia, 4% (3/75 of dogs with leucopenia, 80% (60/75 of dogs with thrombocytopenia, 17% (13/75 of dogs with hemorrhages, and 59% (44/75 of dogs with ticks were positive for Ehrlichia spp. antibodies. The factors associated with seroprevalence were age (1–3 and >3 years old, OR = 7.77 and OR = 15.39, resp., tick infestation (OR = 3.13, and thrombocytopenia (OR = 3.36. In conclusion, seroprevalence of Ehrlichia spp. was high in the community of Xcalak and its associated factors were age, tick infestation, and thrombocytopenia.

Associated Factors to Seroprevalence of Ehrlichia spp. in Dogs of Quintana Roo, Mexico.

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Martínez-Vega, Pedro Pablo; Bolio-Gonzalez, Manuel Emilio; Rodríguez-Vivas, Roger Iván; Gutierrez-Blanco, Eduardo; Pérez-Osorio, Carlos; Villegas-Perez, Sandra Luz; Sauri-Arceo, Carlos Humberto

2016-01-01

The objective of this study was to determine the seroprevalence to Ehrlichia spp. in dogs from Xcalak, Quintana Roo, Mexico, and the associated factors. Serum samples were obtained from 118 dogs and used in an indirect immunofluorescent assay test for the detection of antibodies against Ehrlichia spp. A questionnaire was used to obtain information about possible variables associated with seroprevalence. These variables were analyzed through Chi 2 test and logistic regression. Dog seroprevalence of antibodies against Ehrlichia spp. was 64% (75/118). Fifty-two percent (61/118) of dogs had tick infestation which was identified as Rhipicephalus sanguineus sensu lato . Anemia was observed in 36% of dogs. Leucopenia (2.5%), thrombocytopenia (70%), and hemorrhage (14%) were also observed. Thirty-one percent (23/75) of dogs with anemia, 4% (3/75) of dogs with leucopenia, 80% (60/75) of dogs with thrombocytopenia, 17% (13/75) of dogs with hemorrhages, and 59% (44/75) of dogs with ticks were positive for Ehrlichia spp. antibodies. The factors associated with seroprevalence were age (1-3 and >3 years old, OR = 7.77 and OR = 15.39, resp.), tick infestation (OR = 3.13), and thrombocytopenia (OR = 3.36). In conclusion, seroprevalence of Ehrlichia spp. was high in the community of Xcalak and its associated factors were age, tick infestation, and thrombocytopenia.

La recaudación del Impuesto al Hospedaje en el Estado de Quintana Roo, México: estadística descriptiva y patrón de tendencia fractal

OpenAIRE

Sergio Lagunas Puls

2014-01-01

Partiendo de la gran importancia que representa la recaudación del Impuesto al Hospedaje en los destinos de sol y playa de México, se establece como objetivo analizar el comportamiento del gravamen en el Estado de Quintana Roo, en donde geográficamente se encuentran Cancún, Cozumel, Playa del Carmen y Tulum, en la Riviera Maya. El trabajo se inicia estableciendo la significación de la recaudación analizada con respecto a los demás ingresos por concepto de impuestos estatales, continuando con ...

[Diagnosis of capacity to perform essential public health functions in the Central American countries, the Dominican Republic, and the Mexican states of Chiapas and Quintana Roo].

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González Block, Miguel Ángel; González Robledo, Luz María; Cuadra Hernández, Silvia Magali

2013-04-01

Characterize the capacity of public and private institutions in the Central American countries, the Dominican Republic, and the Mexican states of Chiapas and Quintana Roo to perform essential public health functions (EPHFs). An online survey of 83 organizations in Belize, Costa Rica, the Dominican Republic, El Salvador, Guatemala, Honduras, Nicaragua, Panama, and the Mexican states of Chiapas and Quintana Roo was conducted to learn about their capacity to perform each of the 11 EPHFs. The results were validated in a workshop with representatives of the ministries of health from the seven countries and the two participating Mexican states. High levels of performance capacity were found most often for EPHF 1 (monitoring, evaluation, and analysis of health status of the population), EPHF 2.1.1 (surveillance, research, and control of risks and threats to public health from infectious diseases), and EPHF 5 (policy development and health planning). The greatest weakness was found in EPHF 2.1.2 (surveillance, research, and monitoring of noninfectious diseases). Asymmetries in EPHF performance within each country mainly revealed weaknesses in the laboratory and public health research functions. In the countries and territories analyzed, there is a need to improve strategic performance in most of the EPHFs, as well as to strengthen infrastructure, upgrade equipment, and further develop human resources at both the strategic and the tactical levels. A regional approach should be used to take advantage of the different levels of capacity, with a view to greater strengthening and enhanced technical support and cooperation.

El impacto del huracán Dean sobre la estructura y composición arbórea de un bosque manejado en Quintana Roo, México

OpenAIRE

Navarro-Martínez, Angélica; Durán-García, Rafael; Méndez-González, Martha

2012-01-01

Los huracanes son considerados como uno de los factores más determinantes de la estructura y composición de muchos bosques tropicales. En Quintana Roo, estos fenómenos naturales son tan frecuentes que forman parte de la dinámica natural del bosque. El 21 de agosto de 2007, en el centro-sur del Estado, ocurrió el huracán Dean, que afectó alrededor de 900,000 ha de la selva mediana subperennifolia. En este estudio se cuantifican los daños ocasionados sobre la vegetación y se analizan los cambio...

[Intimate partner violence. Types and risk in primary care health users in Cancun, Quintana Roo, Mexico].

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Sandoval-Jurado, Luis; Jiménez-Báez, María Valeria; Rovira Alcocer, Gloria; Vital Hernandez, Omar; Pat Espadas, Fany Guadalupe

2017-10-01

To identify the prevalence and type of intimate partner violence in women assigned at primary care health and estimates the risks for violence. Case (incident cases)-control. Primary health care unit in Cancun, Quintana Roo, Mexico. Women over 18years old living in couple at last 12months. Validated violence scale for Mexican population was evaluated: total partner violence, physical, psychological and sexual violence. History of violence and sociodemographic variables. Chi square for categorical variables and odds ratio (OR) for risk estimate was determined. The total intimate partner violence was 15.05%, psychological violence in 37.3%. Overall violence, age differences, socioeconomic status, marital status, history of violence and alcohol intake by the partner (P<.05) were observed. The risk increased in over 40 years old (OR: 2.09; 95%CI: 1.07 to 4.11), history of violence (OR: 5.9; 95%CI: 2.8 to 12.44) and alcohol intake by partner (OR=12.38; 95%CI: 2.15 to 29.59). Low socioeconomic status (OR: 0.384; 95%CI: 0.19 to 0.74) and free union (OR: 0.507; 95%CI: 0.27 to 0.95) were relation factors to lower intimate violence partner. Sexual violence predominated among users of primary health care and the risk that present this behavior increases with the consumption of alcoholic beverages in the couple and a history of violence, but the free union and socioeconomic status were possibility protected for violence. Copyright © 2017 Elsevier España, S.L.U. All rights reserved.

Mechanisms of insecticide resistance in field populations of Aedes aegypti (L.) from Quintana Roo, Southern Mexico.

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Flores, Adriana E; Grajales, Jaime Salomon; Salas, Ildefonso Fernandez; Garcia, Gustavo Ponce; Becerra, Ma Haydee Loaiza; Lozano, Saul; Brogdon, William G; Black, William C; Beaty, Barry

2006-12-01

Potential insecticide-resistance mechanisms were studied with the use of biochemical assays in Aedes aegypti (L.) collected from 5 municipalities representing the north part of Quintana Roo: Benito Juarez, Cozumel, Isla Mujeres, Lazaro Cardenas, and Solidaridad. The activities of alpha and beta esterases, mixed-function oxidases (MFO), glutathione-S-transferase (GST), acethylcholinesterase (AChE), and insensitive acethylcholinesterase (iAChE) were assayed in microplates. Three replicates were performed for each enzyme and 60 males and 60 females were analyzed in each population. The New Orleans (NO) susceptible strain of Ae. aegypti was used as a susceptible reference and the threshold criteria for each enzyme were the highest NO absorbance values. In none of the 6 tests were absorbance values correlated in males and females. alpha esterases were elevated in Benito Juarez, Cozumel females and in Lazaro Cardenas males and females. beta esterases were elevated in Benito Juarez, Cozumel females and in Cozumel and Lazaro Cardenas males. Elevated esterases suggest potential insecticide-resistance mechanisms against organophosphate, carbamate, and some pyrethroid insecticides. Slightly elevated levels of MFOs appeared in Lazaro Cardenas females and in Cozumel, Isla Mujeres, and Solidaridad males. Mechanisms involving iAChE or GST were not apparent.

Contribution of a combined TDEM (Time-Domain electromagnetism) and geoelectrical survey to the investigation of the coastal aquifer of Puerto Morelos, Quintana Roo, Mexico

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Rebolledo-Vieyra, M.; Ravelo-Cervantes, J. I.; Lecossec, A.

2007-12-01

This study reports initial results of combined Time Domain Electromagnetic (TDEM) and vertical electrical sounding (VES), geophysical characterization of the Quintana Roo coastal aquifer, with the aim of establishing effective protocols for subsequent surveys in the area, through the association of TDEM and VES. The high resistivity of the carbonate terrain, combined with the very low resistivity range of fresh-water and sea-water, are ideal to use both tools in combination. The results show that both methods used in a combination may provide a useful tool for hydrogeologial studies. In this survey we were able to identifiy a fracture 100 m x 40 m, that was correlated to fresh-water discharges in to the Puerto Morelos Reef lagoon.

PATHOGENS AND PHARMACEUTICALS POLLUTANTS AS INDICATORS OF CONTAMINATION AT THE NORTHEASTHERN AQUIFER OF QUINTANA ROO.

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Rosa M Leal-Bautista

2011-04-01

Full Text Available The objective of this research project was to sample groundwater from touristic to non-touristic wells and sinkholes along the Riviera Maya region, to determine the occurrence, source and extent of the fecal contamination, and link this information to the predominantly touristic activity of this zone. The Escherichia coli (E. coli  is one of the most common bio-indicators to asses the bacteriological water quality its presence is related with pathogenic health problems associated to anthropogenic influence such as leaks from septic tanks, untreated wastewater. Despite the limitations and problems associated with the detection of fecal bacteria, this bio-indicator is still present in several water policies around the world. The study zone was located at Puerto Morelos Quintana Roo, where seven groundwater samples were collected from sinkholes and wells. The results reveal that fecal contamination in groundwater at the touristic and non-touristic sampled sites is occurring. However the detection of the Vibrio spp. and the determination of caffeine makes evident that only in the touristic sites the extent of the contamination implies a human source. The others sources of bacteriological contamination can be linked to the type of coastal ecosystems presented along the area of study.

[Family factors associated with co-dependency in nurses at a hospital in Cancun, Quintana Roo, México].

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Ramírez-Amaro, Margarita; Martínez-Torres, Jorge; Ureña Bogarín, Enrique Leobardo

2014-05-01

Identifying family factors associated with the presence of co-dependency in nurses of a regional hospital in Cancún, Quintana Roo, Mexico. Cross-sectional, comparative study. City of Cancun (México). A random sample of 200nurses who met the inclusion criteria (having a partner for over a year, to be at work on the day of the interview), and who gave informed consent, completed three questionnaires during different shifts. Age, educational level, socioeconomic status, type of family structure, life cycle stage, co-dependency and family functioning. A total of 200nurses, with mean age of 36±8years, took part. The most common socioeconomic status was high (48%), and 47.5% had graduate studies. A co-dependency level of 20.5% (95%CI: 15-26.5) was found. Family factors associated with the presence of co-dependency were; family dysfunction, prevalence ratio (PR)=9.62 (95%CI: 3.47-27.3), stage of independence, PR=3.41 (95%CI: 1.44-7.86), single parent, PR=6.35 (95%CI: 2.41-16.68), and time with partner less than 5 years, PR=3.41 (95%CI: 1.54-7.85). It was found that family dysfunction and being a single parent were significantly associated with co-dependency in hospital nurses, therefore, on being able to identify these factors, family physicians can improve their dynamics and functioning by family study, and improving effective communication with nursing staff and their families. Copyright © 2013 Elsevier España, S.L. All rights reserved.

Diagnóstico de la capacidad para el ejercicio de las funciones esenciales de salud pública en países de Mesoamérica, los estados mexicanos de Chiapas y Quintana Roo y la República Dominicana Diagnosis of capacity to perform essential public health functions in the Central American countries, the Dominican Republic, and the Mexican states of Chiapas and Quintana Roo

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Miguel Ángel González Block

2013-04-01

Full Text Available OBJETIVO: Caracterizar la capacidad para el desempeño de las funciones esenciales de la salud pública (FESP de las instituciones públicas y privadas en países de Mesoamérica, los estados mexicanos de Chiapas y Quintana Roo y la República Dominicana. MÉTODOS: Se aplicó una encuesta en línea a 83 organizaciones de Belice, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panamá, la República Dominicana y los estados mexicanos de Chiapas y Quintana Roo sobre la capacidad de cumplir cada una de las 11 FESP. Los resultados se validaron en un taller con representantes de los ministerios de salud de los siete países y los dos estados mexicanos participantes. RESULTADOS: La mayor capacidad para el desempeño se identificó en la FESP 1 (monitoreo, evaluación y análisis del estado de salud de la población, la FESP 2.1.1 (vigilancia, investigación y control de riesgos y amenazas a la salud pública para enfermedades infecciosas y la FESP 5 (desarrollo de políticas y planificación en salud. La mayor debilidad se encontró en la FESP 2.1.2 (vigilancia, investigación y monitoreo de las enfermedades no infecciosas. Las asimetrías en el desempeño de las FESP al interior de cada país indican debilidades en las funciones de los laboratorios y de la investigación en salud pública. CONCLUSIONES: Se requiere mejorar el desempeño estratégico en la mayor parte de las FESP en los países y territorios analizados y reforzar la infraestructura, el equipamiento y los recursos humanos, tanto a nivel estratégico como táctico. Se debe aplicar un enfoque regional para aprovechar la capacidad diferencial con vistas al fortalecimiento y el apoyo técnico cooperativo.OBJECTIVE: Characterize the capacity of public and private institutions in the Central American countries, the Dominican Republic, and the Mexican states of Chiapas and Quintana Roo to perform essential public health functions (EPHFs. METHODS: An online survey of 83 organizations

Cambios en el uso del suelo y deforestación en el sur de los estados de Campeche y Quintana Roo, México

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Sergio Cortina Villar

1999-01-01

Full Text Available Landsat MSS satellite imagery from 1975 to 1990 were analyzed in order to estimate the rates of conversion of tropical forests and savannas to cropland and pasture in the southern Yucatán Peninsula of Mexico. The area of southeastern Campeche and southern Quintana Roo was subject of a federally financed directed-colonization program during the seventies, which included felling the tropical forests to establish modern agricultural and livestock areas, Although it was believed that most of the area understudy had been deforested, it was found that by the end of the period, 25% of the tropical forests had been deforested and 4-3% of the newly opened agricultural area had been abandoned from the intended cropland and livestock use and covered instead by shrubby or tree secondary vegetation.

Analysis and forecasting of wind velocity in chetumal, quintana roo, using the single exponential smoothing method

Energy Technology Data Exchange (ETDEWEB)

Cadenas, E. [Facultad de Ingenieria Mecanica, Universidad Michoacana de San Nicolas de Hidalgo, Santiago Tapia No. 403, Centro (Mexico); Jaramillo, O.A.; Rivera, W. [Centro de Ivestigacion en Energia, Universidad Nacional Autonoma de Mexico, Apartado Postal 34, Temixco 62580, Morelos (Mexico)

2010-05-15

In this paper the analysis and forecasting of wind velocities in Chetumal, Quintana Roo, Mexico is presented. Measurements were made by the Instituto de Investigaciones Electricas (IIE) during two years, from 2004 to 2005. This location exemplifies the wind energy generation potential in the Caribbean coast of Mexico that could be employed in the hotel industry in the next decade. The wind speed and wind direction were measured at 10 m above ground level. Sensors with high accuracy and a low starting threshold were used. The wind velocity was recorded using a data acquisition system supplied by a 10 W photovoltaic panel. The wind speed values were measured with a frequency of 1 Hz and the average wind speed was recorded considering regular intervals of 10 min. First a statistical analysis of the time series was made in the first part of the paper through conventional and robust measures. Also the forecasting of the last day of measurements was made utilizing the single exponential smoothing method (SES). The results showed a very good accuracy of the data with this technique for an {alpha} value of 0.9. Finally the SES method was compared with the artificial neural network (ANN) method showing the former better results. (author)

Haliotrematoides spp. (Monogenoidea: Dactylogyridae) infecting the gills of grunts (Perciformes: Haemulidae) from the southern coast of Quintana Roo, Mexico.

Science.gov (United States)

Mendoza-Franco, Edgar F; Reyes-Lizama, C; González-Solís, D

2009-12-01

One previously described species, Haliotrema striatohamus Zhukov, 1981, found off the coast of Cuba and Campeche (Gulf of Mexico), is redescribed and transferred to Haliotrematoides Kritsky, Yang and Sun, 2009, as Haliotrematoides striatohamus ( Zhukov, 1981) n. comb. This transfer is based on the study of new specimens of this species found in the gill lamellae of grunts, i.e., Haemulon aurolineatum Cuvier, Haemulon plumierii (Lacepède), and Haemulon sciurus (Shaw) (Haemulidae), all from the southern coast of Quintana Roo, Mexico. In addition, another previously described species, Haliotrema brevispirocirrus Zhukov, 1981 from Haemulon striatum (Linnaeus) from Havana, Cuba, is also transferred to Haliotrematoides based on the comparative morphology of its original description. Data are provided for prevalence and mean intensity as well as for the morphologic and biometric variability of H. striatohamus from different hosts. The new replacement of H. striatohamus ( Zhukov, 1981) n. comb. and H. brevispirocirrus (Zhukov, 1981) n. comb. infecting these taxa represents the first known species of Haliotrematoides on these fishes and new geographical records for these dactylogyrid monogenoids.

Variación estacional de lípidos en varios tejidos del cambute Strombus gigas (Mesogastropoda: Strombidae, en Quintana Roo, México

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Nancy Brito Manzano

1998-09-01

Full Text Available Se determinó la variación mensual de lípidos en varios tejidos del cambute Strombus gigas (L., en Banco Chinchorro, Quintana Roo, México durante un año. La longitud de la heliconcha fue 209 ± 1 mm, la del cuerpo 137 ± 1 mm, la de la espira 100 ± 1 mm y el peso húmedo total 1 826 ± 7 g. La media del contenido de lípidos en la gónada-glándula digestiva fue 4.27 g% (machos 4.01 g% y hembras 4.50 g%. El contenido de lípidos en gónada-glándula digestiva mostró diferencias sexuales significativas (p Strombus gigas samples were collected in Banco Chinchorro, Quintana Roo, Mexico (18°47'-18°23' N; 87°14' W. Shell, body and spire lenght were measured. Fat content of gonad, digestive gland and meat of male and female conchs, was analyzed by the standard and microsoxhlet methods on a monthly basis for a year. Mean lenght for shell, body and spire were 209 ± 1 mm, 137 ±1 mm and 100 ± 1 mm, respectively. Total wet weigth was 1 826 ± 7 g. Fat content in gonad-digestive gland was 1.27-9.33 g% with a mean of 4.27 g% and in meat 0.41-5.03 g% with a mean of 2.15 g%. Fat content in female gonad-digestive gland was 1.27 g% at 8.57 g% with a mean of 4.50 g%; in male: 1.87 g% at 9.33 g% with a mean of 4.01 g%. Sexes differed (t student P < 0.05. Mean fat content in meat was 2.15 g%, (males 1.97 g%, females 2.3 g%. There was not significant sexual difference for meat fat content. There was a difference between gonad-digestive gland and meat (t student P < 0.05. However, from February to September meat lipid content exceeds the percentage recommended for human consumption by the FAO.

RELACIÓN ENTRE EL MANEJO FORESTAL Y EL BIENESTAR SOCIOECONÓMICO EN DOS EJIDOS DE QUINTANA ROO

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Alejandra Ríos-Cortez

2012-01-01

Full Text Available El deterioro de los recursos naturales a nivel mundial ha ocasionado cuestionamientos importantes sobre el paradigma de su uso y las perspectivas de desarrollo futuro al ritmo de explotación actual. En México, el manejo forestal se encuentra principalmente en manos de ejidos y comunidades. Esta investigación evaluó en el año 2010 el impacto del Plan Piloto Forestal (PPF en Quintana Roo establecido en el decenio de 1980. En la evaluación se consideraron aspectos socioeconómicos y culturales del manejo forestal en dos ejidos: Noh Bec y Xhazil Sur y Anexos. El bienestar, las condiciones naturales y el cambio en aspectos sociales, económicos y culturales, se analizaron con un índice de bienestar con relación al manejo forestal. Este índice consideró cinco sistemas: natural, humano, social, económico y cultural. La condición actual de bienestar con relación al aprovechamiento forestal fue media alta y media, para Noh Bec y Xhazil, respectivamente. En ambos ejidos, el manejo forestal con los lineamientos estratégicos del PPF fue un proceso adaptativo para los ejidatarios, presentando diferencias significativas en organización comunal, comercialización, diversificación y apoyo económico y técnico.

Causas y efectos de un destino no sustentable: Caso playas públicas de Cancún, Quintana Roo

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Christine Elizabeth Mc Coy Cador

2016-01-01

Full Text Available Un desarrollo urbano desordenado es uno de los mayores inconvenientes a los que se enfrentan los destinos turísticos. En Cancún, Quintana Roo, dicha anarquía se refleja, entre otras cosas, en la pérdida constante de playas públicas, no sólo por problemas de erosión, sino por la manipulación de usos de suelo. Aunado a lo anterior, se encuentra el modelo hotelero que exige la concesión para construir a pie de playa, así como la autorización de uso casi privado de la misma. Este esquema ha sido replicado en otros destinos, imposibilitando con ello a la población local de su disfrute para entretenimiento, pero las empresas hoteleras no se responsabilizan del mantenimiento cuando éstas se ven afectadas por fenómenos meteorológicos. El presente trabajo realiza una evaluación de lo que estaba programado como playas públicas de acuerdo al Plan Maestro de 1982, su evolución, para contrastarlo con lo que en la actualidad existe, después de un levantamiento de datos en todas las playas públicas y la revisión de los sucesivos Planes de Desarrollo Urbano. El resultado de dicho levantamiento muestra que el destino ha pérdido cerca del 91% de sus playas públicas, lo que permite señalar que ha rebasado su capacidad de carga turística.

Análisis del comportamiento estadístico y aproximación fractal en la recaudación del impuesto sobre nóminas y asimilados en el estado de Quintana Roo

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Sergio Lagunas Puls

2014-01-01

Full Text Available ste trabajo analiza la recaudación del impuesto sobre nóminasy asimilados en el estado de Quintana Roo de 2000 a 2010.La aportación principal es identificar el comportamiento es-tadístico recaudatorio mediante la aproximación fractal, esta-bleciendo patrones iterativos en el nivel estatal, municipal, porla totalidad de la serie analizada de 132 meses y en periodosmenores, sirviendo como detonante para aplicarse en otras lo-calidades y gravámenes con el fin de profundizar en algunascaracterísticas de la fiscalidad. Dos criterios estadísticos fueronempleados para determinar la normalidad, o no, de las series derecaudación fiscal municipal en el periodo de estudio; dichoscriterios son el de la regla empírica y el que utiliza parámetrosdel teorema de Chebyshev; como contraste, se aplicó la prue-ba Jarque-Bera a los residuos, concluyendo que la recaudaciónpor ejercicio fiscal en Quintana Roo (con datos municipalesno sigue una distribución normal, razón por la cual se utilizó laaproximación fractal. Los resultados con datos de recaudaciónfiscal por municipios para ese estado muestran la presencia deun comportamiento fractal (repetitivo y cíclico en la recau-dación, lo que puede interpretarse como la presencia de unabase fiscal consolidada, justificando así la conclusión de quehay fuerza (el nivel de recaudación observado en las finanzaspúblicas locales. La misma conclusión se tiene, con diferentescortes temporales, al analizar y detectar presencia de compor-tamiento fractal específica para la recaudación observada enlos municipios de Benito Juárez (Cozumel y Othón P. Blanco,de 2000 a 2010.

Composición, distribución y abundancia de larvas de moluscos gastrópodos en el sur de Quintana Roo, México y norte de Belice

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J Oliva Rivera

2000-12-01

Full Text Available Para conocer la composición, abundancia y distribución de larvas de gastrópodos, se realizaron muestreos mensuales de abril a diciembre de 1996 en el sur de Quintana Roo, México y norte de Belice. Las recolectas se hicieron en seis sitios de Banco Chinchorro, cuatro de la costa sur y seis en Hol-Chan, Belice. Las recolectas fueron hechas entre las 10 y 20 hrs, se bombearon 2.5 m³ de agua de mar por recolecta en un tiempo de diez minutos, filtrando a los organismos en una malla de 202 µm. Se identificaron un total de 27 especies de moluscos, las especies de mayor abundancia y de más amplia distribución en cada zona fueron: en la costa sur Rissoina sp. 1, Limacina sp. 1 y Natica sp., en Banco Chinchorro, Limacina sp. 1, Creseis acicula, Cerithiopsis hero y Rissoina sp. 1 y en Hol-Chan, Limacina sp. 2, Alaba incerta y Rissoina sp. 1. En general la mayor abundancia de moluscos se presentó en la época de lluvias. Aparentemente la presencia de corrientes y vientos fuertes y otros factores biológicos como el alimento, controlan la distribución y abundancia de las larvas.ha.To know the composition, abundance and distribution of gastropod larvae, monthly samplings were carried out in the south of Quintana Roo, Mexico and north of Belize, from April to December, 1996. Collections were made in six sites at Chinchorro Bank, four in the South Coast and six at Hol-Chan, Belize, between the 10 and 20 hrs. At each station 2.5 m_ of seawater were pumped through a 202 µm mesh; 27 species were identified. The most abundant species were: South Coast, Rissoina sp. 1., Limacina sp. 1 and Natica sp. 1, Chinchorro Bank, Limacina sp. 1, Creseis acicula, Cerithiopsis hero and Rissoina sp.1 and Hol-Chan, Limacina sp.2, Alaba incerta and Rissoina sp.1. The highest abundance was in rainy season. Apparently the presence of winds, coastal currents and food availability, control the distribution and abundance of larvae.

Cambios de cobertura y uso del suelo (1979-2000 en dos comunidades rurales en el noroeste de Quintana Roo

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Juan Manuel Dupuy Rada

2012-02-01

Full Text Available El análisis de los cambios de cobertura y uso del suelo (ccus en relación con las actividades humanas es esencial para entender y predecir la dinámica del paisaje. Se analizan los ccus en Solferino y San Ángel, dos comunidades rurales del noroeste de Quintana Roo, a partir de fotografías aéreas de 1979 y 2000, recorridos de campo y entrevistas para documentar la historia de uso del suelo. Contrario a la mayoría de estudios, se registró un aumento en la cobertura de selvas, proveniente principalmente de la regeneración de áreas quemadas, lo cual resalta el papel de los incendios como agentes de cambio de cobertura y la capacidad de recuperación de las selvas. El cambio en el uso del suelo favoreció ligeramente la deforestación en Solferino, debido en parte a una mayor disponibilidad de selvas para usos agropecuarios en las cercanías del poblado. En San Ángel se observó una mayor regeneración de selvas, debido en parte a una mayor deforestación previa, asociada a un gran aumento poblacional y a la implementación de programas federales de fomento a la ganadería. Se discuten los escenarios de cambio y las posibles repercusiones de las actuales tendencias institucionales, socioeconómicas y climáticas sobre los futuros ccus.

Arquitectura Costa Oriental de Quintana Roo: un legado de Postclásico Tardío en el Caribe mexicano

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Iván Renato Zúñiga Carrasco

2016-01-01

Full Text Available La Costa Oriental de Quintana Roo conforma una región que ha sido definida por un estilo arquitectónico y escultórico peculiar el cual prosperó durante el periodo Postclásico las construcciones presentan variantes como son: mampostería con bóvedas o techos planos de morillos son construcciones sencillas de una cámara o varias desplantando de basamentos, plataformas o de zócalos bajos. La decoración se reduce al uso de molduras en la parte superior de las fachadas, así como nichos sencillos o decorados en el friso. Todo lo anterior provoca que la arquitectura en la región sea muy homogénea y en ocasiones monótona. Es evidente la existencia de influencias estilísticas y rasgos de diversa procedencia, varios elementos son considerados como de carácter mexicano, rasgos tales como: vestíbulos columnados, columnas con figuras esculpidas, columnas serpentiformes, basamentos en talud de los templos, estructuras circulares, la verticalidad de los remates de las alfardas. Se puede apreciar la utilización de otros elementos estilísticos como el desplome intencional y la curvatura de los paramentos, las cubiertas adinteladas, la utilización de molduras decorativas y el uso del dintel rehundido que, junto con los rasgos mencionado antes, en una asociación lograda, conducen a un estilo peculiar y definido.

Edible provenances of Jatropha curcas from Quintana Roo state of Mexico and effect of roasting on antinutrient and toxic factors in seeds.

Science.gov (United States)

Makkar, H P; Becker, K; Schmook, B

1998-01-01

Seven seed samples of J. curcas, both in raw and roasted state, sold in some villages in Quintana Roo state, Mexico for human consumption were analyzed for physical characteristics, nutrients and antinutrients. The average seed weight varied from 0.53 to 0.74 g and kernel weight as proportion of raw seed weight was from 61 to 66%. The contents of crude protein, lipid and ash of kernels from raw seeds were 27-30%, 55-62% and 3.7-5.2% respectively. The levels of antinutrients in meal from the raw seeds were: trypsin inhibitor activity (14.6-28.7 mg trypsin inhibited/g), lectin (25.6-52.2 unit; one unit is the reverse of minimum amount of mg meal/ml assay which produced haemagglutination), saponins (1.9-2.3% as diosgenin equivalent) and phytate (8.4-10%). Phorbol esters in kernels from raw seeds were not detected in four samples and in other three samples it ranged from 0.01 to 0.02 mg/g as phorbol-12-myristate 13-acetate equivalent. Roasting of seeds inactivated almost 100% of trypsin inhibitor activity. Although lectin activity reduced on roasting, it was still present in high amounts. Saponins, phytate and phorbol esters were not affected by roasting.

The Utility of Inquiry-Based Exercises in Mexican Science Classrooms: Reports from a Professional Development Workshop for Science Teachers in Quintana Roo, Mexico

Science.gov (United States)

Racelis, A. E.; Brovold, A. A.

2010-12-01

The quality of science teaching is of growing importance in Mexico. Mexican students score well below the world mean in math and science. Although the government has recognized these deficiencies and has implemented new policies aimed to improve student achievement in the sciences, teachers are still encountering in-class barriers to effective teaching, especially in public colleges. This paper reports on the utility of inquiry based exercises in Mexican classrooms. In particular, it describes a two-day professional development workshop with science teachers at the Instituto Tecnologico Superior in Felipe Carrillo Puerto in the Mexican state of Quintana Roo. Felipe Carrillo Puerto is an indigenous municipality where a significant majority of the population speak Maya as their first language. This alone presents a unique barrier to teaching science in the municipality, but accompanied with other factors such as student apathy, insufficient prior training of both students and teachers, and pressure to deliver specific science curriculum, science teachers have formidable challenges for effective science teaching. The goals of the workshop were to (1) have a directed discussion regarding science as both content and process, (2) introduce inquiry based learning as one tool of teaching science, and (3) get teachers to think about how they can apply these techniques in their classes.

Caracterización de la demanda turística utilizando técnicas multivariables: Caso de estudio Calderitas, Quintana Roo, México

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Francisco Javier Güemez Ricalde

2011-11-01

Full Text Available El sur del Estado de Quintana Roo, entre sus características, cuenta con un tipo de turismo gastronómico potencialmente asociado al ecológico. Allí, la región turística de Calderitas, ubicada a ocho kilómetros de la ciudad de Chetumal, por su cercanía, atrae gran parte de la demanda gastronómica, que incluye la construcción de locales y la aparición de visitantes que se trasladan a los casinos y las zonas de libre comercio en la frontera con Belice. Sin embargo, los turistas se concentran casi exclusivamente en los alimentos, pues recurren poco o nada a otra clase de servicios turísticos que se ofrecen. Por tal motivo, fue necesario identificar el perfil de los visitantes y sus motivaciones, para así orientar la promoción. La investigación que se realizó fue descriptiva, con diseño transversal de campo, e incluye una única medición (agosto de 2009, que se llevó a cabo a través de la aplicación de un cuestionario. La muestra es aleatoria y no probabilística. Se desarrolló con 222 turistas. El trabajo, además, consideró variables de control: edad, sexo, etc.; y, variables explicativas de factores determinantes de la demanda. Finalmente se analizaron segmentación, motivaciones y posicionamiento.

Using Food Flow Data to Assess Sustainability: Land Use Displacement and Regional Decoupling in Quintana Roo, Mexico

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Marco Millones

2016-11-01

Full Text Available Food flow data provide unique insights into the debates surrounding the sustainability of land based production and consumption at multiple scales. Trade flows disguise the spatial correspondence of production and consumption and make their connection to land difficult. Two key components of this spatial disjuncture are land use displacement and economic regional decoupling. By displacing the environmental impact associated with food production from one region to another, environmental trajectories can falsely appear to be sustainable at a particular site or scale. When regional coupling is strong, peripheral areas where land based production occurs are strongly linked and proximate to consumption centers, and the environmental impact of production activities is visible. When food flows occur over longer distances, regional coupling weakens, and environmental impact is frequently overlooked. In this study, we present an analysis of a locally collected food flow dataset containing agricultural and livestock products transported to and from counties in Quintana Roo (QRoo. QRoo is an extensively forested border state in southeast Mexico, which was fully colonized by the state and non-native settlers only in the last century and now is home to some of the major tourist destinations. To approximate land displacement and regional decoupling, we decompose flows to and from QRoo by (1 direction; (2 product types and; (3 scale. Results indicate that QRoo is predominantly a consumer state: incoming flows outnumber outgoing flows by a factor of six, while exports are few, specialized, and with varied geographic reach (Yucatan, south and central Mexico, USA. Imports come predominantly from central Mexico. Local production in QRoo accounts for a small portion of its total consumption. In combining both subsets of agricultural and livestock products, we found that in most years, land consumption requirements were above 100% of the available land not under

Investigations of subsurface flow constructed wetlands and associated geomaterial resources in the Akumal and Reforma regions, Quintana Roo, Mexico

Science.gov (United States)

Krekeler, Mark P. S.; Probst, Pete; Samsonov, Misha; Tselepis, Cynthia M.; Bates, William; Kearns, Lance E.; Maynard, J. Barry

2007-12-01

Subsurface flow constructed wetlands in the village of Akumal, Quintana Roo, Mexico were surveyed to determine the general status of the wetland systems and provide baseline information for long term monitoring and further study. Twenty subsurface flow wetlands were surveyed and common problems observed in the systems were overloading, poor plant cover, odor, and no secondary containment. Bulk mineral composition of aggregate from two subsurface flow constructed wetlands was determined to consist solely of calcite using bulk powder X-ray diffraction. Some soil structure is developed in the aggregate and aggregate levels in wetlands drop at an estimated rate between 3 and 10 cm/year for overloaded wetlands owing to dissolution. Mineral composition from fresh aggregate samples commonly is a mixture of calcite and aragonite. Trace amounts of Pb, Zn, Co, and Cr were observed in fresh aggregate. Coefficients of permeability ( k) varied from 0.006 to 0.027 cm/s with an average values being 0.016 cm/s. Grain size analysis of fresh aggregate samples indicates there are unimodal and multimodal size distributions in the samples with modes in the coarse and fine sand being common. Investigations of other geologic media from the Reforma region indicate that a dolomite with minor amounts of Fe-oxide and palygorskite is abundant and may be a better aggregate source that the current materials used. A Ca-montmorillonite bed was identified in the Reforma region as well and this unit is suitable to serve as a clay liner to prevent leaks for new and existing wetland systems. These newly discovered geologic resources should aid in the improvement of subsurface flow constructed wetlands in the region. Although problems do exist in these wetlands with respect to design, these systems represent a successful implementation of constructed wetlands at a community level in developing regions.

Valuing the risk reduction of coastal ecosystems in data poor environments: an application in Quintana Roo, Mexico

Science.gov (United States)

Reguero, B. G.; Toimil, A.; Escudero, M.; Menendez, P.; Losada, I. J.; Beck, M. W.; Secaira, F.

2016-12-01

Coastal risks are increasing from both economic growth and climate change. Understanding such risks is critical to assessing adaptation needs and finding cost effective solutions for coastal sustainability. Interest is growing in the role that nature-based measures can play in adapting to climate change. Here we apply and advance a framework to value the risk reduction potential of coastal ecosystems, with an application in a large scale domain, the coast of Quintana Roo, México, relevant for coastal policy and management, but with limited data. We build from simple to use open-source tools. We first assess the hazards using stochastic simulation of historical tropical storms and inferring two scenarios of future climate change for the next 20 years, which include the effect of sea level rise and changes in frequency and intensity of storms. For each storm, we obtain wave and surge fields using parametrical models, corrected with pre-computed static wind surge numerical simulations. We then assess losses on capital stock and hotels and calculate total people flooded, after accounting for the effect of coastal ecosystems in reducing coastal hazards. We inferred the location of major barrier reefs and dune systems using available satellite imagery, and sections of bathymetry and elevation data. We also digitalized the surface of beaches and location of coastal structures from satellite imagery. In a poor data environment, where there is not bathymetry data for the whole of the region, we inferred representative coastal profiles of coral reef and dune sections and validated at available sections with measured data. Because we account for the effect of reefs, dunes and mangroves in coastal profiles every 200 m of shoreline, we are able to estimate the value of such ecosystems by comparing with benchmark simulations when we take them out of the propagation and flood model. Although limited in accuracy in comparison to more complex modeling, this approach is able to

Bartonella quintana in Homeless Persons

Centers for Disease Control (CDC) Podcasts

In this podcast, Dr. Marina Eremeeva discusses an article about Bartonella quintana in homeless populations in San Francisco. Bartonella quintana is a bacterium that is transmitted by human body lice. Findings by the article’s authors suggest that Bartonella quintana may be transmitted by head lice. This could mean that populations other than homeless populations, such as school children, might be at increased risk for Bartonella quintana.

Percepción local de los servicios ecológicos y de bienestar de la selva de la zona maya en Quintana Roo, México

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Karla Diana Infante Ramírez

2014-01-01

Full Text Available Este estudio evalúa la percepción local sobre los servicios ecológicos y de bienestar de la selva en comunidades de la zona maya del centro de Quintana Roo. Se trabajó con seis unidades de paisaje, las cuales fueron delimitadas con la participación de habitantes de las comunidades y con una revisión de literatura. Para identificar los servicios que perciben las comunidades de la selva, se utilizaron entrevistas abiertas y semiestructuradas, observación participante, entrevistas a profundidad y talleres comunitarios. Los resultados muestran que los entrevistados identificaron servicios de provisión, de regulación y mantenimiento, y culturales. En particular, percibieron más servicios ecológicos en las unidades del “monte alto” y el “acahual de 20 años” o más, mientras que la “sabana” fue identificada como la que menos servicios les proporciona. Además, a partir de la teoría de los estudios de desarrollo, el estudio identifica las tres dimensiones del concepto de “bienestar humano”: la material, la relacional y la subjetiva, y logra presentar la relación de éstas con los servicios ecológicos percibidos por las comunidades estudiadas. Los resultados muestran una clara interacción sociedad maya-naturaleza y son útiles para orientar la toma de decisiones en el manejo de los recursos naturales, tanto a nivel comunitario como gubernamental.

Bartonella quintana in Homeless Persons

Centers for Disease Control (CDC) Podcasts

2009-06-30

In this podcast, Dr. Marina Eremeeva discusses an article about Bartonella quintana in homeless populations in San Francisco. Bartonella quintana is a bacterium that is transmitted by human body lice. Findings by the article’s authors suggest that Bartonella quintana may be transmitted by head lice. This could mean that populations other than homeless populations, such as school children, might be at increased risk for Bartonella quintana.  Created: 6/30/2009 by Emerging Infectious Diseases.   Date Released: 6/30/2009.

9 CFR 94.15 - Animal products and materials; movement and handling.

Science.gov (United States)

2010-01-01

... California, Baja California Sur, Campeche, Chihuahua, Coahuila, Nuevo Leon, Quintana Roo, Sinaloa, Sonora... Inspección Federal plant in Baja California, Baja California Sur, Campeche, Chihuahua, Coahuila, Nuevo Leon...) from Baja California, Baja California Sur, Campeche, Chihuahua, Nuevo Leon, Quintana Roo, Sinaloa...

Arbuscular mycorrhizal propagules in soils from a tropical forest and an abandoned cornfield in Quintana Roo, Mexico: visual comparison of most-probable-number estimates.

Science.gov (United States)

Ramos-Zapata, José A; Guadarrama, Patricia; Navarro-Alberto, Jorge; Orellana, Roger

2011-02-01

The present study was aimed at comparing the number of arbuscular mycorrhizal fungi (AMF) propagules found in soil from a mature tropical forest and that found in an abandoned cornfield in Noh-Bec Quintana Roo, Mexico, during three seasons. Agricultural practices can dramatically reduce the availability and viability of AMF propagules, and in this way delay the regeneration of tropical forests in abandoned agricultural areas. In addition, rainfall seasonality, which characterizes deciduous tropical forests, may strongly influence AMF propagules density. To compare AMF propagule numbers between sites and seasons (summer rainy, winter rainy and dry season), a "most probable number" (MPN) bioassay was conducted under greenhouse conditions employing Sorgum vulgare L. as host plant. Results showed an average value of 3.5 ± 0.41 propagules in 50 ml of soil for the mature forest while the abandoned cornfield had 15.4 ± 5.03 propagules in 50 ml of soil. Likelihood analysis showed no statistical differences in MPN of propagules between seasons within each site, or between sites, except for the summer rainy season for which soil from the abandoned cornfield had eight times as many propagules compared to soil from the mature forest site for this season. Propagules of arbuscular mycorrhizal fungi remained viable throughout the sampling seasons at both sites. Abandoned areas resulting from traditional slash and burn agriculture practices involving maize did not show a lower number of AMF propagules, which should allow the establishment of mycotrophic plants thus maintaining the AMF inoculum potential in these soils.

Building solar dryer of tropical woods; Construccion de un secador solar de maderas tropicales

Energy Technology Data Exchange (ETDEWEB)

Hernandez R, J; Flores M, F. E; Cuevas D, O [Universidad de Quintana Roo, Chetumal, Quintana Roo (Mexico); Tolentino E, G [LABINTHAP-SEPI-ESIME-IPN, Mexico, D.F. (Mexico)

2000-07-01

In Quintana Roo, Mexico, several species of wood are used for handicrafts. The most commonly method used in the communities nearby Chetumal is natural drying, with the disadvantage of low quality in their products because the moisture contains in the wood. In this project studied the design of solar dryer for tropical woods in Quintana Roo. [Spanish] En este trabajo, se parte del analisis de las condiciones climatologicas existentes en el estado de Quintana Roo, Mexico, asi como de las necesidades de madera seca de una comunidad, como parametros basicos para el diseno y construccion de un secador solar de maderas tropicales.

Fish community structure in freshwater karstic water bodies of the Sian Ka'an Reserve in the Yucatan peninsula, Mexico

Science.gov (United States)

Zambrano, L.; Vazquez-Dominguez, E.; Garcia-Bedoya, D.; Loftus, W.F.; Trexler, J.C.

2006-01-01

We evaluated the relationship between limnetic characteristics and fish community structure (based on species richness, abundance and individual size) in contrasting but interconnected inland aquatic habitats of freshwater karstic wetlands in the Yucatan peninsula, Mexico. In the western hemisphere, freshwater karstic wetlands are found in south-eastern Mexico, northern Belize, western Cuba, Andros Island, Bahamas and the Everglades of southern Florida. Only in the Everglades have fish communities been well described. Karstic wetlands are typically oligotrophic because calcium carbonate binds phosphorus, making it relatively unavailable for plants. Fourteen permanent and seasonally flooded water bodies were sampled in both wet and dry seasons in Sian Ka'an Biosphere Reserve, in the Mexican state of Quintana Roo. Water systems were divided by morphology in four groups: cenotes with vegetation (CWV), cenotes without vegetation (CNV), wetlands (WTL), and temporal cenotes (TPC). Discriminant analysis based on physical characteristics such as turbidity, temperature, depth and oxygen confirmed that these habitats differed in characteristics known to influence fish communities. A sample-based rarefaction test showed that species richness was significantly different between water systems groups, showing that WTL and CWV had higher richness values than CNV and TPC. The most abundant fish families, Poeciliidae, Cichlidae and Characidae, differed significantly in average size among habitats and seasons. Seasonal and inter-annual variation, reflecting temporal variation in rainfall, strongly influenced the environmental differences between shallow and deep habitats, which could be linked to fish size and life cycles. Five new records of species were found for the reserve, and one new record for Quintana Roo state. ?? 2006 by Verlag Dr. Friedrich Pfeil.

Novo gênero de Calliini (Coleoptera, Cerambycidae, Lamiinae

Directory of Open Access Journals (Sweden)

Maria Helena M. Galileo

2010-01-01

Full Text Available Paradrycothaea gen. nov. (Calliini, Lamiinae é proposto para duas espécies mexicanas: P. pilosicornis sp. nov., espécie-tipo, de Quintana Roo e P. jamesi sp. nov. de Chiapas.Paradrycothaea gen. nov. (Calliini, Lamiinae is erected to two Mexican species: P. pilosicornis sp. nov., type species, from Quintana Roo and P. jamesi sp. nov. from Chiapas.

RooStats for Searches

CERN Document Server

Schott, Gregory

2011-01-01

The RooStats toolkit, which is distributed with the ROOT software package, provides a large collection of software tools that implement statistical methods commonly used by the High Energy Physics community. The toolkit is based on RooFit, a high-level data analysis modeling package that implements various methods of statistical data analysis. RooStats enforces a clear mapping of statistical concepts to C++ classes and methods and emphasizes the ability to easily combine analyses within and across experiments. We present an overview of the RooStats toolkit, describe some of the methods used for hypothesis testing and estimation of confidence intervals and finally discuss some of the latest developments.

"Gris Quintana": a Spanish granite from the Past into the Future.

Science.gov (United States)

José Tejado, Juan; Mota, M. Isabel; Pereira, Dolores

2014-05-01

"Gris Quintana" is a medium-grained, biotite and amphibole granodiorite extracted in the Pluton of Quintana de la Serena (Extremadura, Spain). It is a constant light grey granite from the Hercynian geologic with excellent physicomechanical and physicochemical properties. The granodiorite is composed of plagioclase, biotite, quartz and alkali feldspar, with accessory allanite, titanite, apatite, zircon and ilmenite, mostly as inclusions within the biotite crystals. This commercial variety is extracted from many quarries in the late Hercynian plutons located in the Iberian Massif in Spain period (transition between Central Iberian and Ossa-Moren Zones), having large reserves of granite. Many of the quarries have their own transformation factory (high production zone), with which the sector is offered an endless variety of finishes and constructive rock typologies. A wide range of solutions to architects and designers are offered. Gris Quintana granite is one of the materials with highest technological benefits that are used in arquitecture. "Gris Quintana" granite has been used since ancient times, not only at a regional, but also at national and international level: paving, building (structural, exterior façadas, interior uses), urban decoration and funeral art. It can be found in monuments and more recently, in buildings of different styles and uses, that stand out in beauty and splendor, lasting in time. Some singular works in "Gris Quintana" granite all over the world: extension to the "Congreso de Diputados" (Parliament) in Madrid, "Puerta de San Vicente" in Madrid, Andalucia Parliament columns in Sevilla, New Senate Buiding in Madird, "Gran Vía" pavement in Madrid, "Teatro Real façade" in Madrid… "Gris Quintana" granite accomplishes all the requirements for its nomination as Global Heritage Stone Resource, for both its use in construction and for artistic purposes.

Impact of minimum catch size on the population viability of Strombus gigas (Mesogastropoda: Strombidae) in Quintana Roo, Mexico.

Science.gov (United States)

Peel, Joanne R; Mandujano, María del Carmen

2014-12-01

The queen conch Strombus gigas represents one of the most important fishery resources of the Caribbean but heavy fishing pressure has led to the depletion of stocks throughout the region, causing the inclusion of this species into CITES Appendix II and IUCN's Red-List. In Mexico, the queen conch is managed through a minimum fishing size of 200 mm shell length and a fishing quota which usually represents 50% of the adult biomass. The objectives of this study were to determine the intrinsic population growth rate of the queen conch population of Xel-Ha, Quintana Roo, Mexico, and to assess the effects of a regulated fishing impact, simulating the extraction of 50% adult biomass on the population density. We used three different minimum size criteria to demonstrate the effects of minimum catch size on the population density and discuss biological implications. Demographic data was obtained through capture-mark-recapture sampling, collecting all animals encountered during three hours, by three divers, at four different sampling sites of the Xel-Ha inlet. The conch population was sampled each month between 2005 and 2006, and bimonthly between 2006 and 2011, tagging a total of 8,292 animals. Shell length and lip thickness were determined for each individual. The average shell length for conch with formed lip in Xel-Ha was 209.39 ± 14.18 mm and the median 210 mm. Half of the sampled conch with lip ranged between 200 mm and 219 mm shell length. Assuming that the presence of the lip is an indicator for sexual maturity, it can be concluded that many animals may form their lip at greater shell lengths than 200 mm and ought to be considered immature. Estimation of relative adult abundance and densities varied greatly depending on the criteria employed for adult classification. When using a minimum fishing size of 200 mm shell length, between 26.2% and up to 54.8% of the population qualified as adults, which represented a simulated fishing impact of almost one third of the

Religión, fiestas y centros ceremoniales mayas de la Cruz Parlante

Directory of Open Access Journals (Sweden)

Manuel Buenrostro Alba

2015-07-01

Full Text Available En el trabajo se describe el principal santo de los mayas de Quintana Roo, la Cruz Parlante, así como los centros ceremoniales y las fiestas tradicionales relacionadas con esta advocación. Se incluyen datos etnográficos que describen el contexto en el que se centra el estudio. La Cruz Parlante permite a los mayas de Quintana Roo seguir existiendo y los protege, pero para ello debe estar custodiada por los propios mayas.

Comparative Field Evaluation of Different Traps for Collecting Adult Phlebotomine Sand Flies (Diptera: Psychodidae) in an Endemic Area of Cutaneous Leishmaniasis in Quintana Roo, Mexico.

Science.gov (United States)

Rodríguez-Rojas, Jorge J; Arque-Chunga, Wilfredo; Fernández-Salas, Ildefonso; Rebollar-Téllez, Eduardo A

2016-06-01

Phlebotominae are the vectors of Leishmania parasites. It is important to have available surveillance and collection methods for the sand fly vectors. The objectives of the present study were to evaluate and compare traps for the collection of sand fly species and to analyze trap catches along months and transects. Field evaluations over a year were conducted in an endemic area of leishmaniasis in the state of Quintana Roo, Mexico. A randomized-block design was implemented in study area with tropical rainforest vegetation. The study design utilized 4 transects with 11 trap types: 1) Centers for Disease Control and Prevention (CDC) light trap with incandescent bulb (CDC-I), 2) CDC light trap with blue light-emitting diodes (LEDs) (CDC-B), 3) CDC light trap with white LEDs (CDC-W), 4) CDC light trap with red LEDs (CDC-R), 5) CDC light trap with green LEDs (CDC-G), 6) Disney trap, 7) Disney trap with white LEDs, 8) sticky panels, 9) sticky panels with white LEDs, 10) delta-like trap, and 11) delta-like trap with white LEDs. A total of 1,014 specimens of 13 species and 2 genera (Lutzomyia and Brumptomyia) were collected. There were significant differences in the mean number of sand flies caught with the 11 traps; CDC-I was (P  =  0.0000) more effective than the other traps. Other traps exhibited the following results: CDC-W (17.46%), CDC-B (15.68%), CDC-G (14.89%), and CDC-R (14.30%). The relative abundance of different species varied according to trap types used, and the CDC-I trap attracted more specimens of the known vectors of Leishmania spp., such as like Lutzomyia cruciata, Lu. shannoni, and Lu. ovallesi. Disney trap captured more specimens of Lu. olmeca olmeca. Based on abundance and number of species, CDC light traps and Disney traps appeared to be good candidates for use in vector surveillance programs in this endemic area of Mexico.

Determination of 137Cs and 60Co pollution in the area of the Laguna Verde Nuclear Power Plant, Mexico.

Science.gov (United States)

Salas Mar, Bernardo

2015-11-01

The project 'Radiological Analysis of Environmental Samples in the Gulf of Mexico and the coast of Quintana Roo', had the aim of identifying and quantifying anthropogenic radionuclides in environmental samples consisting of silt, sand and sea water. This paper presents the results of the radiological analysis of these samples, which was made in the multichannel system for gamma spectrometry with hyperpure germanium detector in the Laboratory of Radiological Analysis of Environmental Samples, located at the Physics Department, Faculty of Sciences, of the Autonomous National University of Mexico (UNAM). The sampled points are along the coast of the contiguous states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan and Quintana Roo. This paper presents the qualitative and quantitative concentrations of the main identified anthropogenic radionuclides (60)Co and (137)Cs. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Roos on roos on kärbes / Tõnis Tatar

Index Scriptorium Estoniae

Tatar, Tõnis

2009-01-01

Urmas Viigi näitus "Kärbes. Roos. Kärbes" Tartu Kunstimuuseumis 31. oktoobrini. Ekspositsiooni inspiratsiooniallikateks on Jorge Luis Borgese looming ja muinasjutuklassika. Näitust saadab kataloog

Beyond Nature Appropriation: Towards Post-development Conservation in the Maya Forest

OpenAIRE

Jose E Martinez-Reyes

2014-01-01

The establishment of biosphere reserves in Mexico was followed by alternative livelihood conservation/development projects to integrate indigenous groups into Western style conservation under the idea of sustainable development and participation. In this paper, I discuss the outcomes of two forest wildlife management projects in one Maya community along the Sian Ka′an Biosphere Reserve in the state of Quintana Roo. Both projects ultimately failed and the community mobilised and expelled the N...

HistFactory: A tool for creating statistical models for use with RooFit and RooStats

CERN Document Server

Cranmer, Kyle; Moneta, Lorenzo; Shibata, Akira; Verkerke, Wouter

2012-01-01

The HistFactory is a tool to build parametrized probability density functions (pdfs) in the RooFit/RooStats framework based based on simple ROOT histograms organized in an XML file. The pdf has a restricted form, but it is sufficiently flexible to describe many analyses based on template histograms. The tool takes a modular approach to build complex pdfs from more primative conceptual building blocks. The resulting PDF is stored in a RooWorkspace which can be saved to and read from a ROOT file. This document describes the defaults and interface in HistFactory 5.32.

Steni muinasjutuvõistluse võitjad selgunud / Ants Roos, Ann Roos

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Roos, Ants

2008-01-01

Steni XVI muinasjutuvõistluse žüriisse kuulusid: Ann Roos, Ants Roos, Leelo Tungal, Krista Kumberg, Leida Olszak, Ülle Väljataga. Tulemused: I koht Siim Niinelaid, II koht Julius Air Kull, III koht Mihkel Rammu. Žürii eriauhinnad: Anna Kristin Peterson, Elis Ruus, Rain Hallikas, Mariliis Peterson, Marjaliisa Palu, Karl Kirsimäe, Margaret Pulk. Ergutusauhinnad: Karmel Klaus, Martti Kaljuste, Kristina Korell, Mirjam Võsaste, Mihkel Põder, Iirys Kalde, Miriam Jamul, Mari-Ann Mägi, Ketlin Saar, Liisbeth Kirss. Muud eriauhinnad said: Allan Läll, Berle Mees, Anett Kuuse, Karl Erik Kübarsepp, Grete Tamm, Siim Niinelaid, Kaisa Marie Sipelgas, Ellen Anett Põldmaa, Evelin Laul, Karl Laas, Karl Stamm, Kerli Retter

Stable nitrogen isotopes in the turtle grass Thalassia testudinum from the Mexican Caribbean: Implications of anthropogenic development

Science.gov (United States)

Sánchez, Alberto; Ortiz-Hernández, Ma. Concepción; Talavera-Sáenz, Ana; Aguíñiga-García, Sergio

2013-12-01

Nutrient inputs associated with population growth threaten the integrity of coastal ecosystems. To assess the rapid increase in tourism, we compared the δ15N from Thalassia testudinum collected at sites with different levels of tourism development to detect the N inputs of wastewater discharge (WD) along the coast of Quintana Roo. The contributions of nitrogen enriched in 15N are directly related to the increase of WD inputs in areas of tourism development (Nichupte Lagoon in Cancun) and decreased toward Bahia Akumal and Tulum. The δ15N from T. testudinum was significantly lower at Mahahual and Puerto Morelos. In areas of the lowest development and with tourist activity restricted, such as the Yum Balam Reserve and Sian Ka'an Biosphere Reserve, the δ15N values were relatively enriched compared to Mahahual and Puerto Morelos. Therefore, Puerto Morelos and Mahahual may be used for baseline isotopic monitoring where tourist activities are growing and can lead to environmental pressure on the reef lagoon ecosystem. The anthropogenic N input has the potential to impact, both environmentally and economically, the seagrass meadows and the coral reefs along the coast of Quintana Roo and the Caribbean.

Estado de nutrición de los refugiados guatemaltecos menores de seis años Nutritional status of Guatemalan refugees under six years

Directory of Open Access Journals (Sweden)

LILIANA RUIZ-ARREGUI

1998-03-01

Full Text Available Objetivo. Analizar los cambios del estado de nutrición de niños guatemaltecos menores de seis años, refugiados en México entre 1982 y 1996, así como describir los diferentes programas de ayuda alimentaria que se pusieron en marcha. Material y métodos. Se realizó un análisis comparativo de cuatro estudios antropométricos transversales llevados a cabo en Chiapas (1982 y 1989, Quintana Roo (1989 y Campeche y Quintana Roo (1996. Se obtuvieron prevalencias de desnutrición según los indicadores peso/edad y talla/edad. Se calculó la razón de momios de la prevalencia y los intervalos de confianza al 95%. Se describen los programas dirigidos a mejorar la nutrición y salud de la población durante el periodo. Resultados. En 1982 privaban altas tasas de desnutrición y de mortalidad entre estos niños refugiados. En 1989, después de su reubicación en Campeche y en Quintana Roo, había mejorado considerablemente la situación tanto de los reubicados como de los que permanecieron en Chiapas. Esa situación prevaleció hasta 1996. Conclusiones. Los programas emprendidos fueron eficaces para controlar la emergencia y prevenir nuevas situaciones de crisis. Sin embargo, sólo lograron sostener a la población refugiada en condiciones similares a las prevalentes en la población indígena mexicana.Objective. To determine changes in the nutritional status of Guatemalan refugee children under six years of age, who lived in México between 1982 and 1996, under various nutrition-related programs implemented during that period. Material and methods. A comparative analysis of 4 cross-sectional anthropometric studies performed in Chiapas (1982, 1989, Quintana Roo (1989 and Campeche and Quintana Roo in 1996. Malnutrition prevalence by weight/age and height/age indicators was calculated. Odds ratio and 95% confidence intervals were estimated. The implemented programs to improve nutritional status and health conditions are described. Results. In 1982, high

Divergence of Lutzomyia (Psathyromyia) shannoni (Diptera: Psychodidae: Phlebotominae) is indicated by morphometric and molecular analyses when examined between taxa from the southeastern United States and southern Mexico.

Science.gov (United States)

Florin, David A; Rebollar-Téllez, Eduardo A

2013-11-01

The medically important sand fly Lutzomyia shannoni (Dyar 1929) was collected at eight different sites: seven within the southeastern United States and one in the state of Quintana Roo, Mexico. A canonical discriminant analysis was conducted on 40 female L. shannoni specimens from each of the eight collection sites (n = 320) using 49 morphological characters. Four L. shannoni specimens from each of the eight collection sites (n = 32) were sent to the Barcode of Life Data systems where a 654-base pair segment of the cytochrome c oxidase subunit 1 (CO1) genetic marker was sequenced from each sand fly. Phylogeny estimation based on the COI segments, in addition to genetic distance, divergence, and differentiation values were calculated. Results of both the morphometric and molecular analyses indicate that the species has undergone divergence when examined between the taxa of the United States and Quintana Roo, Mexico. Although purely speculative, the arid or semiarid expanse from southern Texas to Mexico City could be an allopatric barrier that has impeded migration and hence gene flow, resulting in different morphology and genetic makeup between the two purported populations. A high degree of intragroup variability was noted in the Quintana Roo sand flies.

Genetrade Eesti büroo = Genetrade Estonia office

Index Scriptorium Estoniae

2012-01-01

Tallinnas Väike-Paala 1 asuva büroo sisekujundusest. Autor Jan Skolimowski (KAMP Arhitektid), loetletud tema tehtud töid. Büroo viimistlus ja sisustus valmistati Genetrade'i tarnitud materjalidest

Cartas de un general porfirista: Correspondencia familiar de Ignacio Bravo, 1889-1918 Letters from a Porfirian General: Family Correspondence of Ignacio Bravo, 1889-1918

Directory of Open Access Journals (Sweden)

Martín Ramos Díaz

2012-08-01

Full Text Available La correspondencia familiar de Ignacio Bravo muestra facetas poco conocidas de los primeros años de vida del territorio de Quintana Roo, de algunos episodios de la revolución mexicana y del exilio del presidente Victoriano Huerta en Texas. Pero, sobre todo, las cartas personales del general Bravo delinean el itinerario de una familia de militares en los años finales del siglo XIX y primeros del siglo XX, en el México de Porfirio Díaz. El presente artículo da la noticia del hallazgo de cientos de piezas de correspondencia personal de Bravo y al mismo tiempo realiza una antología de la información que ayuda a comprender, con nuevos datos, sucesos recurrentes en la historiografía regional del sureste mexicano, como la pacificación de los mayas, la creación del territorio federal de Quintana Roo en la frontera México-Belice y el entorno selvático y hostil para los pioneros que se establecieron en esa alejada región.Ignacio Bravo's family correspondence reveals little-known aspects of the early years of Quintana Roo, certain episodes of the Mexican Revolution and President Victoriano Huerta's exile in Texas. Above all, General Bravo's personal letters trace the lives of a family of military men in the late 19th and early 20th century in the Mexico of Porfirio Díaz. The article reveals the discovery of hundreds of pieces of Bravo's personal correspondence and provides an anthology of the information that uses new data to explain recurrent events in the regional historiography of the Mexican southeast, such as the pacification of the Maya, the creation of the federal territory of Quintana Roo on the Mexico-Belize border and the hostile, jungle environment for the pioneers who settled in this far-off region.

Composition and abundance of zooplankton groups from a coral reef lagoon in Puerto Morelos, Quintana Roo, Mexico, during an annual cycle

Directory of Open Access Journals (Sweden)

José N Álvarez-Cadena

2009-09-01

Full Text Available Zooplankton sampling was carried out monthly from January to December 1990 at station A near the coastline, and station B near the reef barrier, in a tropical coral reef lagoon in the Mexican Caribbean Sea. Samplings were made at midnight, near surface, with a conical net (mouth 0.40 m, mesh 330 µm for 10 min. Salinity varied from 35.1 to 36.3 psu and temperature from 26.3 to 30.2 ºC. The Bray-Curtis test applied to these results has defined two seasons: the dry season from November to May, and the wet season from June to October. A total of 37 zooplankton groups were found. Copepods were the most abundant contributing 49.0% of the total capture with Acartia espinata, Calanopia americana and Farranula gracilis as the most numerous. In the total zooplankton, however, cirripeds captured in only 15 samples of 24 were second in abundance (20.9%. Decapods, present all year-round and more abundant during the wet season, were third and contributed 19.2%. The rest of the groups were scarce and only amphipods (2.4% and larvaceans (2.0% were relatively abundant. The abundance of captured organisms correlated with the abiotic factors measured, thus, in the dry season, abundance was lower (mean 7.3 orgs/m3, while in the wet season the mean catch was 36.8 orgs/m3. Rev. Biol. Trop. 57 (3: 647-658. Epub 2009 September 30.Se efectuaron muestreos mensuales de zooplancton en el Caribe de México de enero a diciembre de 1990 en dos estaciones en la laguna arrecifal de Puerto Morelos en el estado de Quintana Roo, una situada cerca de la línea de costa (A, y la otra próxima a la barrera de coral (B. Los arrastres se realizaron en condiciones de oscuridad (a medianoche, cerca de la superficie durante 10 min con una red cónica de boca de 0.40 m y malla de 330 micras. La salinidad varió de 35.1 a 36.3 ups y la temperatura de 26.3 a 30.2 oC. La prueba de Bray-Curtis definió dos épocas en el año, la de secas de noviembre a mayo, y la de lluvias de junio a

A symmetric Roos bound for linear codes

NARCIS (Netherlands)

Duursma, I.M.; Pellikaan, G.R.

2006-01-01

The van Lint–Wilson AB-method yields a short proof of the Roos bound for the minimum distance of a cyclic code. We use the AB-method to obtain a different bound for the weights of a linear code. In contrast to the Roos bound, the role of the codes A and B in our bound is symmetric. We use the bound

Lutheri loft / Irene Roos

Index Scriptorium Estoniae

Roos, Irene

2008-01-01

Tallinnas Lutheri kvartalis läbi kahe korruse paiknevast näidiskorterist. Sisustajad Irene Roos ja Ester Penjam. Paekiviseina kasutati sisustuselemendina, Philipsi valgustid jagasid ruumi eri tsoonideks. 9 värv. ill

Büroo Ignite = Ignite office / Priit Põldme, Reet Sepp

Index Scriptorium Estoniae

Põldme, Priit, 1971-

2013-01-01

Büroo Ignite (Tatari 25, Tallinn) sisekujundusest. Sisearhitektid Priit Põldme ja Reet Sepp (SAB Joonprojekt). Arhitektid Heiki Taras ja Ahti Luhaäär (Arhitektibüroo Pilter ja Taras). Sisearhitekti ja ESLi aastapreemiate žürii esimehe Kaido Kivi arvamus

Acid rain effect in the constituent material of Mexican Mayan monuments; Efecto de la lluvia acida en el material constituyente de los monumentos Mayas mexicanos

Energy Technology Data Exchange (ETDEWEB)

Bravo Alvarez, H.; Soto Ayala, R.; Sosa Echeverria, R.; Sanchez Alvarez, P. [Facultad de Ingenieria, UNAM, Mexico, D.F. (Mexico)

2003-12-01

Actually, acid rain is considered as a potential problem that affects materials and ecosystems. The effect on monuments, made mainly from limestone, has been studied for long time. In this work, a sample of limestone from Tulum, Quintana Roo, was studied. The following parameters were measured: density, porosity and percentage of water adsorption. Also, the sample was irrigated with acid rain prepared in the laboratory (pH 4.6), based in the chemical composition of 56 rain samples from Puerto Morelos, Quintana Roo, in 1994 and 1995. The results obtained show that acid rain is neutralized by calcium carbonate from the limestone. The high calcium concentrations in the effluent show that limestone is dissolved by acid rain. Superficial recession was 4.4 {mu}m/year under experimental conditions used. [Spanish] Actualmente la lluvia acida se ha convertido en un problema potencial que afecta en mayor o menor grado a materiales y a los ecosistemas. El efecto que causa la lluvia acida en monumentos construidos fundamentalmente de roca caliza, ha sido objeto de muchas investigaciones realizadas, prioritariamente, por paises que poseen estructuras, cuyo material de construccion es caliza. En este trabajo de investigacion se estudio una muestra de roca caliza proveniente de los monumentos mayas de Tulum, Quintana Roo. Se determinaron los parametros de densidad, porosidad y porcentaje de adsorcion de agua. Asimismo, se efectuo la irrigacion de la muestra con lluvia acida (pH aprox. 4.6), preparada en el laboratorio con base en la composicion quimica que se determino en 56 muestras de agua de lluvia provenientes de Puerto Morelos, punto cercano a los monumentos de Tulum, Quintana Roo, durante los anos 1994 y 1995. Los resultados permiten concluir que la lluvia acida sufre un proceso de neutralizacion con el carbonato de calcio de la roca caliza. Las altas concentraciones de calcio en el efluente, mostraron que la roca caliza sufrio una disolucion con la lluvia acida. La

Determination of 137Cs and 60Co pollution in the area of the Laguna Verde Nuclear Power Plant, Mexico

International Nuclear Information System (INIS)

Salas Mar, Bernardo

2015-01-01

The project 'Radiological Analysis of Environmental Samples in the Gulf of Mexico and the coast of Quintana Roo', had the aim of identifying and quantifying anthropogenic radionuclides in environmental samples consisting of silt, sand and sea water. This paper presents the results of the radiological analysis of these samples, which was made in the multichannel system for gamma spectrometry with hyper-pure germanium detector in the Laboratory of Radiological Analysis of Environmental Samples, located at the Physics Department, Faculty of Sciences, of the Autonomous National University of Mexico (UNAM). The sampled points are along the coast of the contiguous states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan and Quintana Roo. This paper presents the qualitative and quantitative concentrations of the main identified anthropogenic radionuclides 60 Co and 137 Cs. (authors)

Antoni Quintana-Marí (1907-1998): A Pioneer of the Use of History of Science in Science Education

Science.gov (United States)

Roca-Rosell, Antoni; Grapí-Vilumara, Pere

2010-09-01

In the early 1930s, the young Antoni Quintana-Marí undertook some research on Antoni de Martí i Franquès, one of the most prominent Catalan scientists of the Enlightenment. This scientist worked in Tarragona, where Quintana-Marí lived. Quintana-Marí learnt about Martí i Franquès from Josep Estalella, his teacher of physics and chemistry at the secondary school. It was while researching on Martí i Franquès that Quintana-Marí became a true historian of science. He subsequently collaborated with other Spanish and foreign historians of science in the early years of this discipline. Quintana-Marí never forgot that his passion for history of science had been aroused by his school teacher.

Bartonella quintana and Typhus Group Rickettsiae Exposure among Homeless Persons, Bogotá, Colombia.

Science.gov (United States)

Faccini-Martínez, Álvaro A; Márquez, Andrea C; Bravo-Estupiñan, Diana M; Calixto, Omar-Javier; López-Castillo, Christian A; Botero-García, Carlos A; Hidalgo, Marylin; Cuervo, Claudia

2017-11-01

In 2015, we investigated Bartonella quintana and typhus group rickettsiae in body lice from homeless persons in Bogotá, Colombia. We found B. quintana-infected body lice and seroprevalence of this microorganism in 19% of homeless persons and typhus group rickettsiae in 56%. Public health professionals should start preemptive measures and active vector control.

Viimsi Keevituse büroo = Offices of Viimsi Keevitus

Index Scriptorium Estoniae

2010-01-01

Viimsis Kaluri tee 13 asuva Viimsi Keevituse büroo sisekujundusest. Autorid: arhitektid Kristi Põldme, Madis Eek, Kristel Jaanus (AB Eek & Mutso), valik nende töödest. Büroo sissepääsu kõrval oleva lõvi autor on skulptor Kalle Pruuden. Klaasseinte 3D graafika: Reio Avaste

Diversity and structure of periphyton and metaphyton diatom communities in a tropical wetland in Mexico Diversidad y estructura de las comunidades de diatomeas del perifiton y el metafiton en un humedal tropical en México

Directory of Open Access Journals (Sweden)

Claudia Ibarra

2009-12-01

Full Text Available We investigated the structure and diversity of diatoms in communities of metaphyton and periphyton from the wetland of El Edén Ecological Reserve, Quintana Roo, Mexico. In spite of the close association and communication between these communities, our comparisons reveal that the 2 communities have distinct species assemblages, with the periphyton being more diverse overall. We fit abundance curves for periphyton and metaphyton, and argue that our results are consistent with communities where environmental conditions play a more important role than competition in structuring diatom species assemblages.Investigamos la estructura y la diversidad de las comunidades de diatomeas en el metafiton y el perifiton del humedal de la Reserva Ecológica El Edén, Quintana Roo, México. A pesar de la cercana asociación entre estas comunidades, nuestro análisis revela que tanto el perifiton como el metafiton consisten de distintas asociaciones de especies y el perifiton es el más diverso. Las distribuciones de las abundancias de las especies de diatomeas satisfacen curvas de distribución log-normal; esto significa que en las comunidades estudiadas, las condiciones ambientales juegan un papel más importante que la competencia para determinar su estructura.

Estado de nutrición de los refugiados guatemaltecos menores de seis años

Directory of Open Access Journals (Sweden)

RUIZ-ARREGUI LILIANA

1998-01-01

Full Text Available Objetivo. Analizar los cambios del estado de nutrición de niños guatemaltecos menores de seis años, refugiados en México entre 1982 y 1996, así como describir los diferentes programas de ayuda alimentaria que se pusieron en marcha. Material y métodos. Se realizó un análisis comparativo de cuatro estudios antropométricos transversales llevados a cabo en Chiapas (1982 y 1989, Quintana Roo (1989 y Campeche y Quintana Roo (1996. Se obtuvieron prevalencias de desnutrición según los indicadores peso/edad y talla/edad. Se calculó la razón de momios de la prevalencia y los intervalos de confianza al 95%. Se describen los programas dirigidos a mejorar la nutrición y salud de la población durante el periodo. Resultados. En 1982 privaban altas tasas de desnutrición y de mortalidad entre estos niños refugiados. En 1989, después de su reubicación en Campeche y en Quintana Roo, había mejorado considerablemente la situación tanto de los reubicados como de los que permanecieron en Chiapas. Esa situación prevaleció hasta 1996. Conclusiones. Los programas emprendidos fueron eficaces para controlar la emergencia y prevenir nuevas situaciones de crisis. Sin embargo, sólo lograron sostener a la población refugiada en condiciones similares a las prevalentes en la población indígena mexicana.

Advokaadibüroo toetab tudengeid

Index Scriptorium Estoniae

2005-01-01

Tartu Ülikooli õigusteaduskonna dekaan prof Kalle Merusk ja advokaadibüroo Luiga Mody Hääl Borenius esindajad kirjutasid alla statuudile "Teldersi sihtkapital", mille vahenditest hakatakse rahastama üliõpilaste osavõttu Teldersi-nimelisest rahvusvahelise harjutuskohtu võistlusest

A new species of Eutrachytes (Acari: Uropodina: Eutrachytidae) associated with the indian mangrove (Avicennia officinalis)

Digital Repository Service at National Institute of Oceanography (India)

Moraza, M.L.; Kontschan, J.; Sahoo, G.; Ansari, Z.A.

. Prague, Academia and The Hague, SPB Academic Publishing bv. pp. 349-356. Krantz G.W. 1969 — The Mites of Quintana Roo. I. A new species of Eutrachytes from the Yucatan Peninsula, with observations on the classification of the genus — Ann. Entomol. Soc. Am...

77 FR 58088 - Submission for OMB Review; Comment Request

Science.gov (United States)

2012-09-19

... live poultry from Argentina and the Mexican States of Campeche, Quintana Roo, and Yucatan under certain... forms will provide APHIS with critical information concerning the origin and history of the items... from Argentina and certain Mexican States. Description of Respondents: Federal Government; Business or...

75 FR 49454 - Submission for OMB Review; Comment Request

Science.gov (United States)

2010-08-13

... live poultry from Argentina and the Mexican States of Campeche, Quintana Roo, and Yucatan under certain... will provide APHIS with critical information concerning the origin and history of the items destined... effective defense against the incursion of END from poultry and poultry products imported from Argentina and...

Tuluweckelia cernua, a new genus and species of stygobiont amphipod crustacean (Hadziidae) from anchialine caves on the Yucatan Peninsula in Mexico

NARCIS (Netherlands)

Holsinger, John R.

1990-01-01

Tuluweckelia cernua, a new genus and species of stygobiont amphipod is described from six anchialine caves near the northeastern coast of the state of Quintana Roo on the Yucatan Peninsula in Mexico. The new genus is closely allied morphologically with Mayaweckelia Holsinger, which is also recorded

RooStats: Statistical Tools for the LHC

CERN Multimedia

CERN. Geneva

2012-01-01

LHC data, with emphasis on discoveries, confidence intervals, and combined measurements in the both the Bayesian and Frequentist approaches. The tools are built on top of the RooFit data modeling language and core ROOT mathematics libraries and persistence technology. These tools have been developed in collaboration with the LHC experiments and used by them to produce numerous physics results, such as the combination of ATLAS and CMS Higgs searches that resulted in a model with more than 200 parameters. We will review new developments which have been included in RooStats and the performance optimizations, required to cope with such complex models used by the LHC experiments. We will show as well the parallelization capability of these statistical tools using multiple-processors via PROOF.

δ15N in the turtle grass from the Mexican Caribbean

Science.gov (United States)

Talavera-Saenz, A.; Sanchez, A.; Ortiz-Hernandez, M.

2013-05-01

Nutrient inputs associated with population growth threaten the integrity of coastal ecosystems. To assess the rapid increase in tourism, we compared the δ15N from Thalassia testudinum collected at sites with different levels of tourism development and population to detect the N inputs of wastewater discharge (WD) along the coast of Quintana Roo. The contributions of nitrogen enriched in 15N are directly related to the increase of WD inputs in areas of high tourism development (Nichupte Lagoon in Cancun, >3 million tourists per year from 2007 to 2011 and 0.7 million of resident population) and decreased towards Bahia Akumal and Tulum (>3 million tourists per year from 2007 to 2011 and 0.15 million of resident population). The δ15N from T. testudinum was significantly lower at Mahahual and Puerto Morelos (about 0.4 million tourists per year in 2007 to 2011 and 0.25 million of resident population) than other the sites. In areas of the lowest development and with tourist activity restricted and small population, such as the Yum Balam Reserve and Sian Ka'an Biosphere Reserve, the δ15N values were in much higher enrichment that Mahahual and Puerto Morelos. Therefore is suggested that Mahahual and Puerto Morelos may be used for baseline isotopic monitoring, over environmental pressure on the reef lagoon ecosystem, where tourist activities and population are growing very slow rate. The anthropogenic N input has the potential to impact, both environmentally and economically, the seagrass meadows and the coral reefs along the coast of Quintana Roo and the Caribbean.

Urinary 1-hydroxypyrene concentration from Mexican children living in the southeastern region in Mexico.

Science.gov (United States)

Pérez-Maldonado, Iván N; Martínez-Salinas, Rebeca I; Pruneda Alvarez, Lucia G; Pérez-Vázquez, Francisco J

2014-04-01

Biomass combustion indoors has been associated with generation of various pollutants, such as carbon monoxide, formaldehyde, respirable particles, toluene, benzene and polycyclic aromatic hydrocarbons (PAHs), among others. In this context, the aim of this study was to evaluate the urinary 1-hydroxypyrene (as a biomarker exposure to PAHs) levels in children living in three states in Mexico. We evaluated children living in communities that use biomass fuels to cook and to heat homes in the next states: Chiapas, Oaxaca and Quintana Roo. We found similar levels of 1-OHP in urine of children living in the three studied states, with mean levels of 3.5 ± 1.0; 4.5 ± 2.8 and 4.4 ± 2.5 μg/L (geometric mean ± standard deviation), respectively for Chiapas, Oaxaca and Quintana Roo. In conclusion, our data indicate high exposure levels to PAHs in children living in the states studied in this work.

La contribución del turismo al crecimiento económico: análisis regional en México.

Directory of Open Access Journals (Sweden)

Enrique Sánchez Flores

2016-07-01

Full Text Available El turismo es una actividad económica que se considera cada vez más importante para generar crecimiento económico y combatir la pobreza. Sin embargo, la relación que existe entre el turismo y el crecimiento económico a nivel regional ha sido poco estudiada. En este artículo se presenta la metodología propuesta por Ivanov y Webster para medir la contribución del turismo al crecimiento económico y se aplicada durante el periodo 2004-2012 para las cinco Entidades Federativas con mayor atracción de turistas en México: Quintana Roo, Jalisco, Guerrero, Veracruz y Chiapas. Los resultados indican que en Quintana Roo es el estado donde el turismo contribuye más al crecimiento económico, mientras que Jalisco en el estado donde las actividades turísticas están menos relacionadas al proceso de crecimiento económico.

Eesti põrsad Hiinas / Janno Roos

Index Scriptorium Estoniae

Roos, Janno, 1976-

2009-01-01

Shanghai EXPO Eesti paviljoni konkursi võidutööst "Savecity.org". Võidutöö autorid Illimar Truverk AET-Arhitektid, Priit Hamer AET-Arhitektid, Janno Roos Ruumilabor, Andres Labi Ruumilabor, Ionel Lehari Identity, Kristian Paljasma Identity, Meelis Opmann Identity ja Maret Põldre Identity

78 FR 62946 - Additional Designations, Foreign Narcotics Kingpin Designation Act

Science.gov (United States)

2013-10-22

... significant foreign narcotics traffickers as identified by the President. In addition, the Secretary of the...; R.F.C. PAPA751109870 (Mexico); C.U.R.P. PAPA751109HNEDSL04 (Mexico) (individual) [SDNTK] (Linked To... No. 279, Supermanzana 50, Manzana 14, Lote 17, Residencial San Angel, Cancun, Quintana Roo, Mexico...

Growth and provenance variation of Pinus caribaea var ...

African Journals Online (AJOL)

CAMCORE has visited 33 populations of Pinus caribaea var. hondurensis in Belize, Guatemala, Honduras, El Salvador, Nicaragua, and Quintana Roo, Mexico. Seed collections have been made in 29 provenances from 1, 325 mother trees. A total of 21 provenances and sources of Pinus caribaea var. hondurensis were ...

Effect of the acid rain in the constituent material of the Mayan Mexican monuments; Efecto de la lluvia acida en el material constituyente de los monuments mayas mexicanos

Energy Technology Data Exchange (ETDEWEB)

Bravo Alvarez, H; Soto Ayala, R; Sosa Echeverria, R; Sanchez Alvarez, P [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

2003-10-15

Actually, acid rain is considered as a potential problem that affects materials and ecosystems. The effect on monuments, made mainly from limestone, has been studied for long time. In this work, a sample of limestone from Tulum, Qintana Roo, was studied. The following parameters were measured: density, porosity and percentage of water adsorption. Also, the sample was irrigated with acid rain prepared in the laboratory (pH = 4.6), based in the chemical composition of 56 rain samples from Puerto Morelos, Quintana Roo, in 1994 and 1995. The results obtained show that acid rain is neutralized by calcium carbonate from the limestone. The high calcium concentrations in the effluent, show that limestone is dissolved by acid rain. Superficial recession was 4.4 {mu}m/year under experimental conditions used. [Spanish] Actualmente la lluvia acida se ha convertido en un problema potencial que afecta en mayor o menor grado a materiales y a los ecosistemas. El efecto que causa la lluvia acida en monumentos construidos fundamentalmente de roca caliza, ha sido objeto de muchas investigaciones realizadas, prioritariamente, por paises que poseen estructuras, cuyo material de construccion es caliza. En este trabajo de investigacion se estudio una muestra de roca caliza proveniente de los monumentos mayas de Tulum, Quintana Roo. Se determinaron los parametros de densidad, porosidad y porcentaje de adsorcion de agua. Asimismo, se efectuo la irrigacion de la muestra con lluvia acida (pH aprox.4.6), preparada en el laboratorio con base en la composicion quimica que se determino en 56 muestras de agua de lluvia provenientes de Puerto Morelos, punto cercano a los monumentos de Tulum, Quintana Roo, durante los anos 1994 y 1995. Los resultados permiten concluir que la lluvia acida sufre un proceso de naturalizacion con el carbonato de calcio de la roca caliza. Las altas concentraciones de calcio en el efluente, mostraron que la roca caliza sufrio una disolucion con la lluvia acida. La

LHV teenindusbüroo = LHV Service Bureau

Index Scriptorium Estoniae

2012-01-01

LHV Panga teenindusbüroo (Tallinn, Tartu mnt. 2) sisekujundusest. Sisearhitektid Kerli Lepp ja Pille Lausmäe (Pille Lausmäe SAB), loetletud nende ühiselt tehtud töid. Arhitektid Andres Alver ja Tiit Trummal

Distribución espacial y temporal del cangrejo Callinectes sapidus (Decapoda: Portunidae en la Bahía de Chetumal, Quintana Roo, México

Directory of Open Access Journals (Sweden)

Héctor J Ortiz-León

2007-03-01

sapidus (Decapoda: Portunidae in Chetumal Bay, Quintana Roo, Mexico. In order to determine temporal and spatial distribution patterns of Callinectes sapidus, samplings were carried out during the cold-front (January-February, dry (May-June and rainy (August-September, 2002 climatic seasons, in 30 sampling stations of Chetumal Bay, grouped in sectors A (14 stations, B (eight stations and C (eight stations. In each sampling station crabs were collected from two transects parallel to the coast, each with three traps, separated by 30 m. Sediments were calcareous coarse and medium sand, white or lightly gray. A total of 1 031 specimens were collected. CPEU (Capture Per Effort Unit differed spatially and temporally. Highest CPEU was found in sector C with 1.3 ind∙trap-1, and in the rainy season with 1.1 ind∙trap-1. Population was predominantly composed of male individuals. The male:female ratio was 15:1. Males and adults (group II CPEU was significant different between sectors and climatic seasons. Both males and adults (group II had a greater CPEU in sector C (1.2 ind∙trap-1 and in the rainy season (1.1 ind∙trap-1. Abundance of female and juvenile individuals (group I was low during the sampling period whereas group 0 juvenile individuals were not found. A greater relative frequency between sectors and climatic seasons were observed in 130-139 mm and 140-149 mm size interval (CW. C. sapidus occurred on sandy sediments in Chetumal Bay. Pearson product moment correlations exhibited significant relationships between CPEU and temperature, salinity and dissolved oxygen. In Chetumal Bay, the spatial and temporal distribution of C. sapidus can be related to salinity, temperature, habitat quality, food availability, recruitment and reproduction events of individuals. Rev. Biol. Trop. 55 (1: 235-245. Epub 2007 March. 31.

Kodumaine ja nooruslik / Piret Veigel, Irene Roos

Index Scriptorium Estoniae

Veigel, Piret, 1961-

2003-01-01

Arhitekt Vahur Sova projekteeritud ökomaja eeskujul kujundatud elutuba. Värvivalik on inspireeritud looduse sügistalvistest toonidest ja naturaalsetest materjalidest. Stilistid Piret Veigel ja Irene Roos. Vineerkapi on kujundanud Tarmo Luisk, laua Jan J. Graps, sirmi Igor Volkov

Risk factors for low birth weight according to the multiple logistic regression model. A retrospective cohort study in José María Morelos municipality, Quintana Roo, Mexico.

Science.gov (United States)

Franco Monsreal, José; Tun Cobos, Miriam Del Ruby; Hernández Gómez, José Ricardo; Serralta Peraza, Lidia Esther Del Socorro

2018-01-17

Low birth weight has been an enigma for science over time. There have been many researches on its causes and its effects. Low birth weight is an indicator that predicts the probability of a child surviving. In fact, there is an exponential relationship between weight deficit, gestational age, and perinatal mortality. Multiple logistic regression is one of the most expressive and versatile statistical instruments available for the analysis of data in both clinical and epidemiology settings, as well as in public health. To assess in a multivariate fashion the importance of 17 independent variables in low birth weight (dependent variable) of children born in the Mayan municipality of José María Morelos, Quintana Roo, Mexico. Analytical observational epidemiological cohort study with retrospective temporality. Births that met the inclusion criteria occurred in the "Hospital Integral Jose Maria Morelos" of the Ministry of Health corresponding to the Maya municipality of Jose Maria Morelos during the period from August 1, 2014 to July 31, 2015. The total number of newborns recorded was 1,147; 84 of which (7.32%) had low birth weight. To estimate the independent association between the explanatory variables (potential risk factors) and the response variable, a multiple logistic regression analysis was performed using the IBM SPSS Statistics 22 software. In ascending numerical order values of odds ratio > 1 indicated the positive contribution of explanatory variables or possible risk factors: "unmarried" marital status (1.076, 95% confidence interval: 0.550 to 2.104); age at menarche ≤ 12 years (1.08, 95% confidence interval: 0.64 to 1.84); history of abortion(s) (1.14, 95% confidence interval: 0.44 to 2.93); maternal weight < 50 kg (1.51, 95% confidence interval: 0.83 to 2.76); number of prenatal consultations ≤ 5 (1.86, 95% confidence interval: 0.94 to 3.66); maternal age ≥ 36 years (3.5, 95% confidence interval: 0.40 to 30.47); maternal age ≤ 19 years (3

"Vettpidavad allikad" = "Watertight sources" / Janno Roos, Andres Labi

Index Scriptorium Estoniae

Roos, Janno, 1976-

2013-01-01

Eesti Ajaloomuuseumis avatud näituse kujundasid Janno Roos ja Andres Labi (Ruumilabor). Kuraator Krista Sarv. Graafiline disain: Identity. Eksponeeritud allveeuuringute käigus leitu. Arhitektuuriajaloolase Leele Välja arvamus

Association of the stramenopilan protists, the aplanochytrids, with zooplankton of the equatorial Indian Ocean

Digital Repository Service at National Institute of Oceanography (India)

Damare, V.; Raghukumar, S.

, Gaxiola-Cortés MG, Simoes N (eds) Avances en Nutrición Acuícola VI. Memorias del VI Simposium Internacional de Nutrición Acuícola. 3 al 6 de Septiembre del 2002. Cancún, Quintana Roo, México, p 281-292. • Bussolati G, Leonardo E (2008) Technical...

77 FR 63418 - Additional Designations, Foreign Narcotics Kingpin Designation Act

Science.gov (United States)

2012-10-16

... significant foreign narcotics traffickers as identified by the President. In addition, the Secretary of the..., Zapopan, Jalisco C.P. 45238, Mexico; Cancun, Quintana Roo, Mexico; R.F.C. SRC-080222-274 (Mexico) [SDNTK..., Guadalajara, Jalisco C.P. 44130, Mexico; R.F.C. UNI-031118-2I6 (Mexico) [SDNTK]. In addition, OFAC is...

Conservative nutrient use by big-leaf mahogany (Swietenia macrophylla King) planted under contrasting environmental conditions

Science.gov (United States)

E. Medina; E. Cuevas; A.E. Lugo; E. Terezo; J. Jimenez-Osornio; P.A. Macario-Mendoza; P. Montanez

2014-01-01

We analyzed the nutritional composition and isotope ratios (C and N) of big-leaf mahogany (Swietenia macrophylla King) leaves in plantations established on contrasting soils and climates in Central America (State of Quintana Roo, Yucatan, Mexico) and South America (State of Para, Brazil). The objective was to determine the adaptability of this species to large...

Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico.

Science.gov (United States)

Pérez-Pech, Wilbert Andrés; Anguas-Escalante, Abril; Cutz-Pool, Leopoldo Querubin; Guidetti, Roberto

2017-11-07

A new species, Doryphoribius chetumalensis, is described from specimens collected in the city of Chetumal (Quintana Roo state, Mexico). The species was found in a new and unusual habitat for urban tardigrades, i.e. the soil sediment accumulated on the border of streets. This discovery shows that tardigrades can live in this habitat, demonstrating once again the wide capacity of this taxon to tolerate adverse habitats, and to survive in environments with high anthropogenic impact. Doryphoribius chetumalensis sp. nov. differs from all the other species of the genus in having enlarged and wide bulbous base of the claws. Within Doryphoribius, it belongs to the zappalai group, and differs from the species in this group, not only in the claw shape, but also by the orange body colour, the smooth cuticle, the absence of a tooth in the wall of the buccal ring, and the absence of lunules under the claws. This is the first record of tardigrades, identified to species level, in Quintana Roo state. A taxonomic key of the Doryphoribius genus is also presented.

markers and morphochemical traits of Carica papaya L.

African Journals Online (AJOL)

Javier Orlando Mijangos Cortés

southern of Yucatán Peninsula (Cancún, Quintana Roo), México, and the commercial M22 (maradol tpe) were selected as parents. Both genotypes are hermaphrodites but they have contrasting plant height, fruit size and pulp color characters. M22 are shorter plants bearing large red pulp fruits, while L7 are taller plants ...

First records of freshwater molluscs from the ecological reserve El Edén, Quintana Roo, México Primeros registros de moluscos dulceacuícolas de la Reserva Ecológica El Edén, Quintana Roo, México

Directory of Open Access Journals (Sweden)

Roberto Cózatl-Manzano

2007-12-01

Full Text Available The diversity of the freshwater molluscs at El Edén was unknown. This is the first treatment of them, allowing us to compare spatial and temporal species distribution. Eleven species of freshwater molluscs were found in 2 surveys carried in March (dry season and September (rainy season 1998 at the reserve El Edén. A total of 266 individuals were collected; 8 pulmonates, Mayabina spiculata, Mexinauta impluviatus, Physa sp., Biomphalaria havanensis, Drepanotrema lucidum, Drepanotrema kermatoides, Planorbella (Pierosoma trivolvis, and Planorbula armigera; 2 prosobranchs, Pyrgophorus sp. and Pomacea flagellata; and one bivalve, Musculium transversum. Pulmonata dominate over Prosobranchia species in diversity. No significant differences were observed in diversity between dry and rainy seasons. However, species abundance recorded in both seasons was very low, probably due to a combination of inadequate food resources and disadvantageous climate (periodic conditions of drought and flooding. Further studies using a combination of different sampling methods and more frequent samplings are needed to confirm or identify these factors. We suggest that future studies should focus on cultivation of species with economic potential such as the apple snail Pomacea flagellata.La diversidad de moluscos dulceacuícolas de la Reserva Ecológica El Edén se desconocía; este estudio constituye su primer registro. Asimismo, esta investigación permite comparar la distribución espacial y temporal de las especies registradas. Las recolectas se efectuaron en marzo (temporada de sequía y septiembre (lluvia de 1998. Se registran 11 especies (266 individuos en total, 8 pulmonados: Mayabina spiculata, Mexinauta impluviatus, Physa sp., Biomphalaria havanensis, Drepanotrema lucidum, Drepanotrema kermatoides, Planorbella (Pierosoma trivolvis y Planorbula armigera; dos prosobranquios: Pyrgophorus sp. y Pomacea flagellata, y un bivalvo: Musculium transversum. Los pulmonados

Sun, wind and electric generation; Sol, viento y generacion electrica

Energy Technology Data Exchange (ETDEWEB)

Huacuz Villamar, Jorge M. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1995-12-31

A description is made of the electric generation known as the photovoltaic-wind power hybrid systems at the generation station of X-Calak which is located in the zone known as Punta Herrero-X-Calak Corridor, in the Southern coast of the Quintana Roo State. This is a technology in development, in which the solar and the wind energy are combined, to offer an alternative of electric generation that can be economical, reliable and of low impact on the environment. Mention is made of the experiences gathered in this station as well as the results obtained [Espanol] Se describe la tecnologia de generacion electrica conocida como sistemas hibridos fotovoltaico-eolico en la planta generadora de X-Calak, la cual esta localizada en la zona conocida como el corredor Punta Herrero-X-Calak, en la costa sur del estado de Quintana Roo. Esta es una tecnologia en desarrollo, en donde se combina la energia solar y energia eolica, para ofrecer una alternativa de generacion electrica que pretende ser economica, confiable y de bajo impacto sobre el medio ambiente. Se mencionan las experiencias obtenidas en esta planta asi como los resultados obtenidos

Sun, wind and electric generation; Sol, viento y generacion electrica

Energy Technology Data Exchange (ETDEWEB)

Huacuz Villamar, Jorge M [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1996-12-31

A description is made of the electric generation known as the photovoltaic-wind power hybrid systems at the generation station of X-Calak which is located in the zone known as Punta Herrero-X-Calak Corridor, in the Southern coast of the Quintana Roo State. This is a technology in development, in which the solar and the wind energy are combined, to offer an alternative of electric generation that can be economical, reliable and of low impact on the environment. Mention is made of the experiences gathered in this station as well as the results obtained [Espanol] Se describe la tecnologia de generacion electrica conocida como sistemas hibridos fotovoltaico-eolico en la planta generadora de X-Calak, la cual esta localizada en la zona conocida como el corredor Punta Herrero-X-Calak, en la costa sur del estado de Quintana Roo. Esta es una tecnologia en desarrollo, en donde se combina la energia solar y energia eolica, para ofrecer una alternativa de generacion electrica que pretende ser economica, confiable y de bajo impacto sobre el medio ambiente. Se mencionan las experiencias obtenidas en esta planta asi como los resultados obtenidos

Kniphoogte en ingebogen blad beïnvloeden uitloop roos

NARCIS (Netherlands)

Baas, R.

2005-01-01

Verschil in uitloop van jonge scheuten bij roos wordt vooral bepaald door variatie van het uitgangsmateriaal. Dit bepaalt de snelheid van uitlopen en de grootte van de griffeltak. Hoe groter de griffel, hoe meer en zwaarder de volgende scheuten. Hoog knippen zorgt voor een snellere uitloop

Eesti Energia esindused = Eesti Energia branches / Andres Labi, Janno Roos

Index Scriptorium Estoniae

Labi, Andres, 1977-

2013-01-01

Eesti Energia klienditeeninduse kontorite sisekujundusest. Autorid: Janno Roos, Andres Labi ja Liisa Põime (Ruumilabor). Visuaalne identiteet: Tank.Teenuste disain: Urmas Pastarus. ESLi aastapreemiate žürii esimehe Kaido Kivi ning žürii liikme Raivo Puusepa arvamused

"Parlament 95" = "Parliament 95" / Ionel Lehari, Janno Roos ; kommenteerinud Illi Ong

Index Scriptorium Estoniae

Lehari, Ionel, 1967-

2015-01-01

Rändnäitus "Parlament 95" Eesti suuremate linnade kaubanduskeskustes. Autorid Janno Roos, Andres Labi (Ruumilabor), Ionel Lehari, Maret Põldre (Identity), Taavi Rull. Eesti Sisearhitektide Liidu aastapreemia 2014/2015 parima installatsiooni eest

Advokaadid Sten Luiga ja Marti Hääl: pingutame hullult, et muuta oma büroo ... tavaliseks firmaks / Marti Hääl, Sten Luiga

Index Scriptorium Estoniae

Hääl, Marti, 1972-

2010-01-01

Advokaadibüroo Luiga Mody Hääl Borenius juhid vandeadvokaadid Marti Hääl ja Sten Luiga vastavad küsimustele, mis puudutavad advokaatide kvaliteedistandardeid, büroo tegevuse parandamist kvaliteedijuhtimisega, ISO standardite sisseviimist, juhtimisinfosüsteemi rakendamist ning advokaadibüroo juhtimist

Age McCanni büroo = Offices of Age McCann

Index Scriptorium Estoniae

2010-01-01

Tallinnas Rotermanni 8 asuva Age McCanni büroo sisekujundusest. Sisekujunduse autorid: sisearhitekt Kerli Valk (Kukuhaus OÜ) ja arhitekt Tomomi Hayashi (HG Arhitektuur OÜ), nende tähtsamate tööde loetelu

MarkIT büroo = Offices of MarkIT

Index Scriptorium Estoniae

2010-01-01

Tallinnas Pärnu mnt. 102C asuvas büroohoones paikneva MarkIT büroo sisekujundusest. Sisearhitektid Kard Männil (SAB Miu Miu Miu) ja Loreida Hein (Studio La), nende tähtsamate tööde loetelu. Valge büroomööbel on sisearhitektide projekteeritud. Graafika on sisearhitektid ise joonistanud

Mario Quintana, um eclético sincrético na literatura brasileira

DEFF Research Database (Denmark)

Carvalho, Vinicius Mariano de

2014-01-01

Este artigo esboça um panorama da produção literária de Mario Quintana, situando seu percurso dentro do contexto do Modernismo Brasileiro mostrando como o poeta foi sistematicamente um eclético com relação ao submeter-se a uma estética literária e como operou um verdadeiro sincretismo literário em...

Early diagnosis of diabetic retinopathy in primary care.

Science.gov (United States)

Jimenez-Baez, Maria Valeria; Marquez-Gonzalez, Horacio; Barcenas-Contreras, Rodolfo; Morales Montoya, Carlos; Espinosa-Garcia, Laura Fatima

2015-01-01

To evaluate the impact of a strategy for early detection of diabetic retinopathy in patients with type 2 diabetes mellitus (DMT2) in Quintana Roo, México. Study transversal, observational, prospective, analytical, eight primary care units from Mexican Social Security Institute in the northern delegation of the State of Quintana Roo, Mexico were included. A program for early detection of diabetic retinopathy (DR) in adult 376,169 was designed. Were diagnosed 683 cases of type 2 diabetes, in 105 patients randomized was conducted to direct ophthalmoscopy were subjected to a secondary hospital were assigned. Will determine the degree of diabetic retinopathy and macular edema was performed. In population were 55.2% female, mean age 48+11.1 years, 23.8 % had some degree of DR, 28.0% with mild non- proliferative diabetic retinopathy 48.0 % moderate 16.0% and severe and 8.0% showed proliferative diabetic retinopathy. Those over age 30 are 2.8 times more risk of developing DR, OR= 2.8; 95%CI: 0.42-18.0, and OR= 1.7; 95%CI: 1.02-2.95 women. The implementation of programs aimed at the early detection of debilitating conditions such as diabetic retinopathy health impact beneficiaries, effective links between primary care systems and provide second level positive health outcomes for patient diseases.

Species composition and abundance of Brevipalpus spp. on different citrus species in Mexican orchards.

Science.gov (United States)

Salinas-Vargas, D; Santillán-Galicia, M T; Valdez-Carrasco, J; Mora-Aguilera, G; Atanacio-Serrano, Y; Romero-Pescador, P

2013-08-01

We studied the abundance of Brevipalpus spp. in citrus orchards in the Mexican states of Yucatan, Quintana Roo and Campeche. Mites were collected from 100 trees containing a mixture of citrus species where sweet orange was always the main species. Eight collections were made at each location from February 2010 to February 2011. Mites from the genus Brevipalpus were separated from other mites surveyed and their abundance and relationships with the different citrus species were quantified throughout the collection period. A subsample of 25% of the total Brevipalpus mites collected were identified to species level and the interaction of mite species and citrus species were described. Brevipalpus spp. were present on all collection dates and their relative abundance was similar on all citrus species studies. The smallest number of mites collected was during the rainy season. Brevipalpus phoenicis (Geijskes) and Brevipalpus californicus (Banks) were the only two species present and they were found in all locations except Campeche, where only B. phoenicis was present. Yucatan and Campeche are at greater risk of leprosis virus transmission than Quintana Roo because the main vector, B. phoenicis, was more abundant than B. californicus. The implications of our results for the design of more accurate sampling and control methods for Brevipalpus spp. are discussed.

Robertson-Walker type solutions with Carter and Quintana-type elasticity

International Nuclear Information System (INIS)

Lukacs, B.

1976-03-01

The problem of elastic matter in gravitational field having six parameter symmetry is studied by help of the more general theory of Carter and Quintana. The results are compared to the author's earlier calculations using the less general Rayner's formalism. It is shown that previous results remain valid if the equation of state is chosed specially. The Hookean limit of the two theories differ from one another but there is no essential difference between the behaviours of the solutions. (Sz.N.Z.)

Resistance of Mayan Women against Obstetric Violence

OpenAIRE

Gonzalez-Flores, Marina

2015-01-01

Mayan women are often victims of obstetric violence in the Yucatan Peninsula. Obstetric violence is defined as violence women experience by health officials or midwives during birth. This article will examine five different communities within the states of Yucatan, Campeche, and Quintana Roo in Mexico and compare and contrast activism efforts against obstetric violence among Mayan women. Mayan women are organizing to create unions for midwives, workshops on reproductive rights and health care...

Rahapesu andmebüroo uurib Ühispanga juhtumit / Inno Tähismaa

Index Scriptorium Estoniae

Tähismaa, Inno, 1970-

2004-01-01

Politsei rahapesu andmebüroo juhi Arnold Tenusaare kinnitusel alustatakse Ühispanga asepresidendi Lembit Kitteriga seotud off-shore firma Patent Developments Ltd. juhtumi uurimist, kus 1997. aastal firma pangaarvelt sularaha väljavõtmisel võis olla tegemist allkirja võltsimise ja rahapesuga

Assessment of persistent organic pollutants levels in blood samples from Quintana Roo, Mexico.

Science.gov (United States)

Antonio, Trejo-Acevedo; Edith, Rivero-Pérez Norma; Rogelio, Flores-Ramírez; Fernando, Díaz-Barriga; Catalina, Ochoa Angeles; Nelinho, Pérez-Maldonado Iván

2013-06-01

The Stockholm Convention on persistent organic pollutants (POPs) sought to determine baseline exposures to POPs in the general population; however, in developing countries, exposure to these chemicals in hot spots may be an issue of public health considering its magnitude. Therefore, the aim of this study was to assess the levels of POPs in the blood of children living in three communities in the Southeastern Region of Mexico. During 2007, we studied a total of 96 healthy children (aged 6-12 years). Quantitative analyses were performed using gas chromatography coupled with mass spectrometry. High levels of p,p'-DDT and its principal metabolite, p,p'-DDE, were found in the blood of children living in the three communities studied, the levels ranged from 463.5 to 9046.3 ng/g lipid and from 490.8 to 57,712.4 ng/g lipid for DDT and DDE, respectively. In addition, high levels of lindane (γ-HCH) were found, with mean levels ranging between 575.4 and 6580.6 ng/g lipid. Moreover, children living in the study region were also exposed to polychlorinated biphenyls (PCBs), and the levels of these compounds in the blood of children were very similar between the communities with mean levels of around 3000 ng/g lipid (total PCBs). In conclusion, we demonstrated that children living in the studied communities were exposed to complex chemical mixtures (DDT, DDE, lindane and PCBs) rather than to individual compounds. Therefore, in future studies it is important to understand the potential interactions between the components of these mixtures. Copyright © 2012 Elsevier GmbH. All rights reserved.

[Population estimates and conservation of felids (Carnivora: Felidae) in Northern Quintana Roo, Mexico].

Science.gov (United States)

Ávila-Nájera, Dulce María; Chávez, Cuauhtémoc; Lazcano-Barrero, Marco A; Pérez-Elizalde, Sergio; Alcántara-Carbajal, José Luis

2015-09-01

Wildlife density estimates provide an idea of the current state of populations, and in some cases, reflect the conservation status of ecosystems, essential aspects for effective management actions. In Mexico, several regions have been identified as high priority areas for the conservation of species that have some level of risk, like the Yucatan Peninsula (YP), where the country has the largest population of jaguars. However, little is known about the current status of threatened and endangered felids, which coexist in the Northeastern portion of the Peninsula. Our objective was to estimate the wild cats' density population over time at El Eden Ecological Reserve (EEER) and its surrounding areas. Camera trap surveys over four years (2008, 2010, 2011 and 2012) were conducted, and data were obtained with the use of capture-recapture models for closed populations (CAPTURE + MMDM or 1/2 MMDM), and the spatially explicit capture-recapture model (SPACECAP). The species studied were jaguar (Panthera onca), puma (Puma concolor), ocelot (Leopardus pardalis), jaguarundi (Puma yaguaroundi) and margay (Leopardus wiedii). Capture frequency was obtained for all five species and the density for three (individuals/100km2). The density estimated with The Mean Maximum Distance Moved (MMDM), CAPTURE, ranged from 1.2 to 2.6 for jaguars, from 1.7 to 4.3 for pumas and from 1.4 to 13.8 for ocelots. The density estimates in SPACECAP ranged from 0.7 to 3.6 for jaguars, from 1.8 to 5.2 for pumas and 2.1 to 5.1 for ocelots. Spatially explicit capture recapture (SECR) methods in SPACECAP were less likely to overestimate densities, making it a useful tool in the planning and decision making process for the conservation of these species. The Northeastern portion of the Yucatan Peninsula maintains high populations of cats, the EEER and its surrounding areas are valuable sites for the conservation of this group of predators. Rev. Biol.

"Riigikogu hoone 90" = "Estonian parliament building 90" / Janno Roos, Andres Labi

Index Scriptorium Estoniae

Roos, Janno, 1976-

2013-01-01

Eesti Sisearhitektide Liidu 2012. aasta näituse kujunduse preemia pälvinud näitusest (Lossiplats 1A). Kujunduse autorid Janno Roos ja Andres Labi (Ruumilabor). Kuraator Mait Väljas. Graafiline disain: Identity. Sisearhitekti ja ESLi aastapreemiate žürii liikme Mari Kurismaa ning arhitektuuriajaloolase Leele Välja arvamused

Büroo täis metsahõngu / Ell-Maaja Randküla

Index Scriptorium Estoniae

Randküla, Ell-Maaja, 1939-2016

2005-01-01

OÜ Loo Grupp büroo Tallinnas Peterburi mnt. 44. Sisekujundus: Jan Skolimowski, Arhitektuuristuudio Siim & Kreis. Ehitajad: AS Harju Ehitus ja OÜ Loo Grupp. Arhitekt Jan Skolimowskist, tema tähtsamad tööd. Ill.: plaan, 10 värv. vaadet

Doença da arranhadura do gato por Bartonella quintana em lactente: uma apresentação incomum

Directory of Open Access Journals (Sweden)

Azevedo Zina Maria Almeida de

2000-01-01

Full Text Available Relato de caso de doença da arranhadura do gato (DAG, em um paciente lactente, com história epidemiológica negativa, descrevendo o rastreamento diagnóstico, a imagem ao ultra-som, a evolução clínica e o prognóstico. B. quintana foi identificada em aspirado de secreção ganglionar pelo método de PCR. B. henselae, embora seja o agente causal habitualmente responsável pela DAG, não foi isolada. Os autores concluem que a pesquisa de B. quintana e B. henselae deve ser incluída na investigação de adenites, principalmente quando a evolução é subaguda, mesmo em lactentes e, ainda que a história epidemiológica seja negativa.

Twilio Eesti büroo = Offices of Twilio Estonia / Katrin Kaevats ; kommenteerinud Ann Koljang

Index Scriptorium Estoniae

Kaevats, Katrin, 1980-

2016-01-01

Rahvusvahelise ettevõtte Twilio Eesti büroo Tallinnas, Veerenni tn. 24. Sisekujunduse autorid Katrin Kaevats, Jaan Port, Markus Nimik, Neeme Tiimus, Anna Nikland. Büroohoone projekteerisid PIN Arhitektid

Blackness and mestizaje: Afro-Caribbean music in Chetumal, Mexico

OpenAIRE

Cunin, Elisabeth

2014-01-01

International audience; Hierba Santa, Chan Santa Roots, Korto Circuito, Roots and Wisdom, Escuadrón 16, etc.: these are a few of the numerous reggae and ska groups from the state of Quintana Roo, in the south-eastern part of Mexico bordering Belize. While this region is traditionally associated with a dominant Maya culture or with the first mestizaje in Mexico, I will study Afro-Caribbean music in order to analyze, from a different perspective, socio-historical mechanisms of inclusion, transf...

Risk factors for low birth weight according to the multiple logistic regression model. A retrospective cohort study in José María Morelos municipality, Quintana Roo, Mexico

Directory of Open Access Journals (Sweden)

José Franco Monsrea

2018-01-01

Full Text Available Resumen INTRODUCCIÓN El bajo peso al nacer ha constituido un enigma para la ciencia a través de los tiempos. Múltiples han sido los trabajos de investigación realizados con respecto a las causas que lo producen y los efectos que provoca. El bajo peso al nacer es un indicador que permite predecir la probabilidad de sobrevivencia de un niño. De hecho, existe una relación exponencial entre el déficit de peso, la edad gestacional y la mortalidad perinatal. La regresión logística múltiple es uno de los instrumentos estadísticos más expresivos y versátiles de que se dispone para el análisis de datos tanto en clínica y en epidemiología como en salud pública. OBJETIVO Evaluar de forma multivariada la importancia de 17 variables independientes en el bajo peso al nacer (variable dependiente, de niños nacidos en el municipio maya de José María Morelos, Quintana Roo, México. MÉTODOS Estudio epidemiológico observacional analítico de cohortes, con temporalidad retrospectiva. Se registraron todos los nacimientos que cumplieron con los criterios de inclusión, ocurridos en el Hospital Integral José María Morelos de la Secretaría de Salud, correspondientes al municipio maya de José María Morelos, durante el período comprendido del 1 de agosto de 2014 al 31 de julio de 2015. El número total de recién nacidos registrados fue de 1147; 84 de estos (7,32% tenían bajo peso al nacer. Para evaluar la asociación independiente entre las variables explicativas o factores de riesgo y la variable respuesta, se realizó un análisis de regresión logística múltiple utilizando el software IBM SPSS Statistics 22. RESULTADOS En orden numérico ascendente de valores de odds ratios > 1 señalaron la contribución positiva de las variables explicativas o factores de riesgo: estado civil no–casada (1,08, intervalo de confianza del 95%: 0,55 a 2,10; edad a la menarca ≤ 12 años (1,08, intervalo de confianza del 95%: 0,64 a 1,84; antecedentes de

Scheteligi büroo- ja laohoone = Schetelig's Office Building and Warehouse / Epp Lankots

Index Scriptorium Estoniae

Lankots, Epp, 1976-

2000-01-01

Kahekorruseline, minimalistliku kastja mahuga hoone. Peafassaadi kujunduses on kasutatud firma nime. Projekteerija Arhitektibüroo J. Okas & M. Lõoke. Arhitektid Jüri Okas, Marika Lõoke. Sisekujundaja Kristiina Voolaid. Projekt 1998, valmis 2000. 7 ill. Korruste plaanid, lõige, välisvaated

A regional-scale groundwater model supporting management of the Sian Ka'an Biosphere Reserve and its catchment, Quintana Roo, Mexico

DEFF Research Database (Denmark)

Gondwe, Bibi Ruth Neuman; Merediz Alonso, G.; Rebolledo Vieyra, M.

2007-01-01

's second largest coral reef. The freshwater supply to the system occurs primarily via subsurface inflow. Large freshwater springs emerge through vertical sinkholes (cenotes) in the lagoons of Sian Ka'an. Management of this unique ecosystem in view of the rapid development and urbanization...

Meiosis en mutantes desinápticos con restitución cromosómica en rhoeo spathacea (commelinaceae)

OpenAIRE

García-Velasquez, Armando

2009-01-01

El estudio se llevó a cabo en recolectas de Rhoeo spathacea realizadas en Veracruz, Chiapas, Tabasco, Yucatán, Quintana Roo y Michoacán, México. Las plantas presentaron número diploide de cromosomas (2n=12) en mit...

[Prevalence of rhinitis allergic in populations of several states of Mexico].

Science.gov (United States)

Mancilla-Hernández, Eleazar; Medina-Ávalos, Miguel Alejandro; Barnica-Alvarado, Raúl Humberto; Soto-Candia, Diego; Guerrero-Venegas, Rosario; Zecua-Nájera, Yahvéh

2015-01-01

Allergic rhinitis is an inflammatory disorder of the nasal mucosa, characterized by symptoms of itching, rhinorrhea, nasal congestion and sneezing induced by an IgE-mediated response. In Mexico we have reports of prevalence, with fluctuations of 5.5% to 47.7% with the question of rhinitis symptoms the past 12 months. To determine the prevalence of allergic rhinitis in schoolchildren from various states of Mexico. A descriptive study of prevalence in which a questionnaire was applied to preschool, elementary-, middle- and high-school population. It was performed in four cities in four states of Mexico: Puebla, Puebla, Tulancingo, Hidalgo, Tlaxcala, Tlaxcala and Cancun, Quintana Roo. Parents answered questionnaires of preschool and elementary school and middle- and high-school students answered their questionnaires. The study was conducted from June 2014 to January 2015. The instrument used was: questionnaire diagnosis of allergic rhinitis for epidemiological studies. Of the surveys, 8,159 completed questionnaires were obtained, in the city of Puebla: 2,267, Tulancingo, Hidalgo: 2,478, Tlaxcala, Tlaxcala: 2,574, Cancun, Quintana Roo: 840; total male: 4,190 (51%). The overall average rate of prevalence of allergic rhinitis among four states including all respondents ages was 15%. With the use of the questionnaire diagnosis of allergic rhinitis for epidemiological studies in the four cities in four different states, we found a prevalence of allergic rhinitis of 15% in ≥13 yearpopulation and 13% in ≤12 year-old children.

Meiosis in desynaptic-chromosomal restitution mutants in Rhoeo spathacea (Commelinaceae)

OpenAIRE

García-Velázquez, Armando

2008-01-01

El estudio se llevó a cabo en recolectas de Rhoeo spathacea realizadas en Veracruz, Chiapas, Tabasco, Yucatán, Quintana Roo y Michoacán, México. Las plantas presentaron número diploide de cromosomas (2n=12) en mitosis. En meiosis los individuos formaron anillo y/o cadenas en metafase I, con excepción de varios mutantes desinápticos-RSD (separación de cromosomas apareados). En meiosis de Rhoeo no se observan bivalentes ni hay posibilidades de entrecruzamiento, y consecuentemente no habrá quias...

Xanthocephalus xanthocephalus nuevo registro para la parte continental de la Península de Yucatán, México

Directory of Open Access Journals (Sweden)

Jorge Correa Sandoval

2015-06-01

Full Text Available Xanthocephalus xanthocephalus sólo había sido reportado para Cayo Arenas del Banco de Campeche y no para la parte continental de la Península de Yucatán. En esta nota reportamos avistamientos de individuos de la especie en la caleta Xel-Ha, en Quintana Roo, durante el período del 15 diciembre de 2001 al 4 de mayo del 2002 y en la Reserva de la Biosfera Ría Lagartos, en Yucatán, el 23 y el 28 de septiembre de 2005.

Formación de la ciudad red en la frontera sur de México a través del establecimiento de comunidades migrantes

OpenAIRE

Té Figueroa, Emilio Isaac

2010-01-01

El siguiente trabajo presenta una propuesta para el estudio de una problemática urbana en la región frontera sur del estado de Quintana Roo que surge a partir de los procesos migratorios de las últimas décadas y que originan la transformación del espacio urbano. Se pretende lograr una caracterización de este problema mediante el abordaje de conceptos e ideas que surgen a partir de investigaciones previas que se relacionan con las condiciones observadas. La investigación se centra en el ...

Lactancia materna, alimentación complementaria y el riesgo de obesidad infantil

OpenAIRE

Luis Sandoval Jurado; María Valeria Jiménez Báez; Sibli Olivares Juárez; Tomas de la Cruz Olvera

2016-01-01

Objetivo: Evaluar el patrón de lactancia materna y el inicio de alimentación complementaria como riesgo de obesidad en niños de edad preescolar de un centro de atención primaria. Diseño: Transversal analítico. Emplazamiento: Cancún, Quintana Roo (México). Participantes: Niños de 2 a 4 años de edad, pertenecientes a una Unidad de atención primaria. Mediciones principales: Tiempo de lactancia materna total y exclusiva, alimento de inicio de alimentación complementaria referido por l...

Itineraries of sexual exploitation of urban young women from working-class neighborhoods in Cancún

Directory of Open Access Journals (Sweden)

Aurora Zavala Caudillo

2018-01-01

Full Text Available The article presents testimonies that illustrate the acts of violence suffered by some of the young women from working-class neighborhoods in Cancún, Quintana Roo, Mexico, in 2011. On the basis of the theoretical perspectives of hermeneutics and gender studies, it seeks to account for the diverse processes that shape and give rise to sexual exploitation. The article suggests that the social bond created by dating organizes meaning, while, at the same time, preserving and reproducing the logic of male domination that marks these women’s everyday lives.

Uniprindi büroo- ja trükikojahoone : edu peatänavatest, Uniprindi trükikojast ning geneerilisest arhitektuurist = Success from Main Streets, Uniprint Printing Plant, and Generic Architecture / Veljo Kaasik

Index Scriptorium Estoniae

Kaasik, Veljo

2000-01-01

Pärnu mnt. ristmiku juurde Tallinnas R. Puusepa arhitektibüroo poolt trükikojale Uniprint projekteeritud büroo-tootmishoonest. Arhitektid Raivo Puusepp, Krista Väärtnõu. Konstruktsioonid: Projektbüroo Teinos, Civen OÜ. Projekt 1999-2000, hoone valmis 2000. Peatänavaid ääristava hoonestuse kiirest muundumisest. 9 ill.: korruste plaanid, lõiked, vaated (joon.); välisvaated (foto)

Variaciones nucleotídicas de dos grupos de tepezcuintles, Agouti paca (Rodentia: Agoutidae, en cautiverio provenientes de dos localidades de Yucatán, México

Directory of Open Access Journals (Sweden)

Rubén C Montes-Pérez

2006-09-01

Full Text Available Estimamos las variaciones nucleotídicas entre dos grupos de tepezcuintles (Agouti paca provenientes de los estados de Campeche y Quintana Roo, México y, dentro de cada grupo. Se colectaron muestras sanguíneas de once A. paca mantenidos en cautiverio. El ADN de leucocitos se utilizó para efectuar la amplificación aleatoria de polimorfismos de ADN (RAPD. Se seleccionaron los iniciadores número tres 5’ -d(GTAGACCCGT-3’ y seis 5’ -d(CCCGTCAGCA-3’ del estuche (Ready.To.Go. RAPD Analysis Beads, Amersham Pharmacia Biotech, porque produjeron un adecuado número de bandas. Los patrones electroforéticos de bandas fueron procesados con el software para análisis filogenético basado en el método de UPGMA para estimar la variación nucleotídica. El árbol filogenético obtenido con el iniciador tres reveló una agrupación dicotómica entre los animales de ambos estados de la Península de Yucatán, con un valor de divergencia de 1.983 nucleótidos de cada cien. Los animales de Quintana Roo mostraron un agrupamiento con el iniciador seis y, otro grupo más con animales procedentes de Campeche. La variación nucleotídica entre estos dos grupos fue de 2.118 nucleótidos por cada cien. Las variaciones nucleotídicas dentro de los grupos procedentes de ambos estados, para los dos iniciadores, mostraron valores que fluctuaron entre 0.46 y 1.68 nucleótidos de cada cien, lo cual indica que la variación nucleotídica entre los dos grupos de animales es alrededor de dos nucleótidos por cada cien y, dentro de grupos es menor a 1.7 nucleótidos por cada cien.Nucleotidic variations of two captive groups of tepezcuintle, Agouti paca (Rodentia: Agoutidae, from two sites in Yucatan, Mexico. The objective of this work was to estimate the nucleotidic variation between two groups of tepezcuintles (Agouti paca from the states of Campeche and Quintana Roo, Mexico and within members of each group. Blood samples were collected from eleven A. paca kept in

RMK büroohoone = State Forest Management Centre office building / Arhitektuuribüroo Studio-3

Index Scriptorium Estoniae

2013-01-01

Riigimetsa Majandamise Keskuse bürooruumide (Toompuiestee 24, Tallinn) sisekujundusest. Autorid: Reet Põime, Liisa Põime, Anu Põime, Andres Põime, Kristi Prinzmann, Lauri Kalm, Lauri Vaimel (Studio-3). Arhitekt Ott Kadariku arvamus. Arhitektuuribüroo Studio-3 lühitutvustus

Performance studies of GooFit on GPUs vs RooFit on CPUs while estimating the statistical significance of a new physical signal

Science.gov (United States)

Di Florio, Adriano

2017-10-01

In order to test the computing capabilities of GPUs with respect to traditional CPU cores a high-statistics toy Monte Carlo technique has been implemented both in ROOT/RooFit and GooFit frameworks with the purpose to estimate the statistical significance of the structure observed by CMS close to the kinematical boundary of the J/ψϕ invariant mass in the three-body decay B + → J/ψϕK +. GooFit is a data analysis open tool under development that interfaces ROOT/RooFit to CUDA platform on nVidia GPU. The optimized GooFit application running on GPUs hosted by servers in the Bari Tier2 provides striking speed-up performances with respect to the RooFit application parallelised on multiple CPUs by means of PROOF-Lite tool. The considerable resulting speed-up, evident when comparing concurrent GooFit processes allowed by CUDA Multi Process Service and a RooFit/PROOF-Lite process with multiple CPU workers, is presented and discussed in detail. By means of GooFit it has also been possible to explore the behaviour of a likelihood ratio test statistic in different situations in which the Wilks Theorem may or may not apply because its regularity conditions are not satisfied.

IMPUESTO FEDERAL A LOS SUELDOS GENERADO POR LAS MICROEMPRESAS: CASO CANCÚN, MÉXICO

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Lagunas Puls, Sergio

2012-09-01

Full Text Available Se plantea el objetivo de identificar, a través de una muestra representativa de microempresas (mipyme de sectores económicos que dependen del turismo, cuáles son los rangos de sueldos y el sector a que pertenecen aquellos que generan una mayor recaudación fiscal o, caso contrario,son mayormente subsidiados por el gobierno. Las obligaciones fiscales para las mipymes en México son múltiples, por ello se identifica la necesidad de realizar artículos de investigación específicos, que aporten elementos de evaluación para los inversionistas. El trabajo presenta un alcance geográfico del municipio de Benito Juárez, Quintana Roo, México que alberga el destino turístico de Cancún. La estructura se inicia con un esbozo de la importancia de las mipymes y la situación económica en Quintana Roo; se establece el fundamento para considerar a las mipymes como mexicanas y el origen normativo de sus obligaciones fiscales; posteriormente se plantea la mecánica para calcular el impuesto federal a los sueldos, determinando una muestra representativa estratificada respecto a los principales sectores; se hace una estimación de la recaudación calculada conforme a la muestra y, finalmente se presentan las conclusiones. La información presenta un valor agregado ya que en sí misma, constituye una guía con respecto al pago de impuesto federal a los sueldos que se generan en México.

Deconstructing the risk for malaria in United States donors deferred for travel to Mexico.

Science.gov (United States)

Spencer, Bryan; Kleinman, Steven; Custer, Brian; Cable, Ritchard; Wilkinson, Susan L; Steele, Whitney; High, Patrick M; Wright, David

2011-11-01

More than 66,000 blood donors are deferred annually in the United States due to travel to malaria-endemic areas of Mexico. Mexico accounts for the largest share of malaria travel deferrals, yet it has extremely low risk for malaria transmission throughout most of its national territory, suggesting a suboptimal balance between blood safety and availability. This study sought to determine whether donor deferral requirements might be relaxed for parts of Mexico without compromising blood safety. Travel destination was recorded from a representative sample of presenting blood donors deferred for malaria travel from six blood centers during 2006. We imputed to these donors reporting Mexican travel a risk for acquiring malaria equivalent to Mexican residents in the destination location, adjusted for length of stay. We extrapolated these results to the overall US blood donor population. Risk for malaria in Mexico varies significantly across endemic areas and is greatest in areas infrequently visited by study donors. More than 70% of blood donor deferrals were triggered by travel to the state of Quintana Roo on the Yucatán Peninsula, an area of very low malaria transmission. Eliminating the travel deferral requirement for all areas except the state of Oaxaca might result in the recovery of almost 65,000 blood donors annually at risk of approximately one contaminated unit collected every 20 years. Deferral requirements should be relaxed for presenting donors who traveled to areas within Mexico that confer exceptionally small risks for malaria, such as Quintana Roo. © 2011 American Association of Blood Banks.

Detection of different Leishmania spp. and Trypanosoma cruzi antibodies in cats from the Yucatan Peninsula (Mexico) using an iron superoxide dismutase excreted as antigen.

Science.gov (United States)

Longoni, Silvia S; López-Cespedes, Angeles; Sánchez-Moreno, Manuel; Bolio-Gonzalez, Manuel E; Sauri-Arceo, Carlos H; Rodríguez-Vivas, Roger I; Marín, Clotilde

2012-09-01

Although human leishmaniasis has been reported in 20 states in Mexico, no case of leishmaniasis has been reported in cats to date. In the Yucatan Peninsula, it has been found that dogs may act as reservoirs for at least three Leishmania species (Leishmania mexicana, Leishmania braziliensis, and Leishmania panamensis). In this study we identified specific antibodies against these three Leishmania spp. and Trypanosoma cruzi in the sera from 95 cats from two States on the Yucatan Peninsula, namely Quintana Roo and Yucatan, by ELISA and Western blot techniques using whole extract and an iron superoxide dismutase excreted by the parasites as antigens. As well as demonstrating the presence of trypanosomatid antibodies in the feline population on the Yucatan Peninsula, we were also able to confirm the high sensitivity and specificity of the iron superoxide dismutase antigen secreted by them, which may prove to be very useful in epidemiological studies. Copyright © 2012 Elsevier Ltd. All rights reserved.

An arboreal spider protects its offspring by diving into the water of tank bromeliads.

Science.gov (United States)

Hénaut, Yann; Corbara, Bruno; Azémar, Frédéric; Céréghino, Régis; Dézerald, Olivier; Dejean, Alain

2018-03-01

Cupiennius salei (Ctenidae) individuals frequently live in association with tank bromeliads, including Aechmea bracteata, in Quintana Roo (Mexico). Whereas C. salei females without egg sacs hunt over their entire host plant, females carrying egg sacs settle above the A. bracteata reservoirs they have partially sealed with silk. There they avoid predators that use sight to detect their prey, as is known for many bird species. Furthermore, if a danger is more acute, these females dive with their egg sacs into the bromeliad reservoir. An experiment showed that this is not the case for males or females without egg sacs. In addition to the likely abundance of prey found therein, the potential of diving into the tank to protect offspring may explain the close association of this spider with bromeliads. These results show that, although arboreal, C. salei evolved a protective behavior using the water of tank bromeliads to protect offspring. Copyright © 2018 Académie des sciences. Published by Elsevier Masson SAS. All rights reserved.

Los indígenas en ciudades de México: el caso de los mazahuas, otomíes, triquis, zapotecos y mayas

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Patricia Noemí Vargas Becerra

2002-01-01

Full Text Available El presente trabajo sintetiza los resultados de la investigación Perfiles de los Indígenas en Ciudades de México diseñada para conocer las características demográficas, sus condiciones de vida, la persistencia cultural y la cultura de la identidad de los mazahuas, otomíes, triquis, mayas y zapotecos en tres configuraciones urbanas distintas: la gran metrópoli, la ciudad de México y su zona metropolitana; zonas industriales como el corredor industrial Minatitlán-Veracruz, y una ciudad turística: Cancún, Quintana Roo.

Atraktiivne kontor Viljandis - Leviehituse büroo = An attractive office in Viljandi - Leviehitus's office

Index Scriptorium Estoniae

2007-01-01

Viljandis Leola t. 49 asuva Leviehituse büroo sisekujundus. Sisearhitekt Tambet Pedak. Vastuvõtuleti, laedetailid, nõupidamistelauad ja köögimööbli on T. Pedaku jooniste järgi valmistanud Jaan Sild Wako Värkstoast. Sisearhitektist, tema tähtsamad tööd. Plaan, 8 värv. vaadet, foto T. Pedakust

1 küsimus noorele juhile : Kuidas on kõige parem tähtsad põhimõtted töötajateni viia? / Kaarel Oja, Reet Roos, Martin Hurt... [jt.

Index Scriptorium Estoniae

2010-01-01

Küsimusele vastavad Teater NO99 tegevjuht Kaarel Oja, meediaagentuuri Inspired, tööõigusbüroo ja trükikoja Digiprint omanik Reet Roos, kaitseministeeriumi asekantsler Martin Hurt, SOL Eesti personalijuht Evely Ellert ning investeerimis- ja varahalduslahendusi pakkuva Sampo Life juhatuse liige Erkki Sadam

Mercury and metallothioneins in blood fractions and tissues of captive Morelet's crocodiles in Quintana Roo, Mexico.

Science.gov (United States)

Buenfil-Rojas, A M; Alvarez-Legorreta, T; Cedeño-Vázquez, J R

2018-05-01

Even though studies of heavy metals and their relation with metallothioneins (MTs) in reptile tissues have been conducted, research on heavy metals and MTs in organs and blood fractions of crocodylians is limited. To date there are no studies on the distribution of MTs in organs and their relation with mercury (Hg), or the concentration of MTs in plasma and erythrocytes of crocodylians. In order to understand the role of MTs in crocodiles, our aim was to assess the detoxification mechanisms for exposure to metals in Morelet's crocodile (Crocodylus moreletii) by using two biomarkers (Hg and MTs) in blood fractions and tissues, and comparing them with concentrations between two populations of crocodiles, one previously wild and currently captive (Theme Park) and another raised in a Wildlife Management Unit (WMU). The caudal scutes from the Theme Park showed higher concentrations of Hg than those from the skin in the WMU samples, and significant negative relationships were observed between the total length (TL) and Hg in the scutes. The significant negative relationship between Hg and hemoglobin (Hb) may be due to disorders in the oxidation process and even denature of this protein, while the positive trend observed between MTs and Hb is consistent with the detoxifying functions and the protection against oxidative damage. This study is the first to report Hg in the erythrocytes of crocodylians and the use of MTs for testing the potential of these biomarkers as a tool to assess Hg exposure in crocodile's habitats. Copyright © 2018 Elsevier Ltd. All rights reserved.

[Biomass and density of 2 seagrass species in southern Quintana Roo, Mexico].

Science.gov (United States)

Gutiérrez-Aguirre, M A; de la Fuente-Betancourt, M G; Cervantes-Martínez, A

2000-01-01

The biomass and productivity of a seagrass community are useful for determining the ecological status of the coast. Leaf biomass and shoot density in beds of Thalassia testudinum Banks & Sol. ex K. D. Koenig, were compared for two environments in the Mexican Caribbean coast (N = 6 quadrants/site) in November 1998. Shoot and leaf biomass values were lower in the mangrove-associated meadow than in the reef lagoon meadow. This could be related to the higher percentage of epiphytes on the leaves. In addition, T. testudinum had more biomass than Syringodium filiforme Kütz in the reef lagoon.

Climate and cultural history of the Northeastern Yucatan Peninsula, Quintana Roo, Mexico

Energy Technology Data Exchange (ETDEWEB)

Hodell, D.A. [Department of Geological Sciences, University of Florida, 241 Williamson Hall, P.O. Box 112120, Gainesville, FL 32611 (United States); Brenner, M.; Curtis, J.H. [Land Use and Environmental Change Institute (LUECI), University of Florida, Gainesville, FL (United States)

2007-07-15

We inferred the Holocene paleoclimate history of the northeastern Yucatan Peninsula, Mexico, by studying stratigraphic variations in stable isotopes (d 18O and d 13C) and lithologic properties (organic matter and carbonate content) in sediment cores taken in 6.3 and 16.2 m of water from Lake Punta Laguna. We present a simple model to explain the lithologic and isotopic variations, and discuss the inferred paleoclimate history in terms of its relation to ancient Maya cultural development. We find evidence for lower lake level and drier climate at about the same time as each major discontinuity in Maya cultural history: Preclassic Abandonment (150-250 A.D.), Maya Hiatus (534 to 593 A.D.), Terminal Classic Collapse (750-1050 A.D.), and Postclassic Abandonment (mid-fifteenth century). Although these broad temporal correlations suggest climate played a role in Maya cultural evolution, chronological uncertainties preclude a detailed analysis of climate changes and archaeologically documented cultural transformations.

La pobreza de los internos de la cárcel de Chetumal, Quintana Roo, México/The poverty of the inmates at the jail in Chetumal, Quintana Roo, Mexico

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Maribel Lozano Cortés

2015-01-01

Full Text Available Prisons have always been populated by the poor, or those who were not successful in the labor market, the problem now is that those poor prisoners are also attacked by the organized crime groups that control Mexican prisons. The prison of Chetumal is a prison where you can look the poverty of the inmates, is one of the worst evaluated by the National Commission on Human Rights. When we know closely the stories of prisoners, we can understand how is constructed the criminal behavior and reflect on how the prison serves to reproduce violence and poverty under the gaze of power.

ESPACIO TRASFRONTERIZO ENTRE BELICE Y MÉXICO A PRINCIPIOS DEL SIGLO XX. ANÁLISIS SOCIO-DEMOGRÁFICO DEL IMPACTO DE LA MIGRACIÓN EN LA FORMACIÓN FAMILIAR

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Allan Ortega Muñoz

2013-06-01

Belize and Mexico share demographic, cultural and economic characteristics. Their bordering peoples have experienced sociability processes that have an impact on family formation and their mode of assimilation to their destinations when they migrate. These processes were evaluated through the civil registry of birth and death records in Corozal, Belize and South Quintana Roo, Mexico (from 1885 to 1955 with the purpose of reconstructing family composition. Information about fertility and family types (endo/exogamic families was drawn from the same source. Results show differences in these areas. Each social group (intimate culture thus has a different experience of its migratory process.

Caracterización de los paisajes terrestres actuales de la península de Yucatán

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Carlos Chiappy

2000-04-01

Full Text Available This work presents the characterization of current landscapes in the Yucatan peninsula. To this end the physico-geographical landscape method was used, based on an integrated scheme of the following natural components: geomorphology, altitude, climate, soils, land use and vegetation. These components were derived from digitalized maps, and afterwards they were analyzed using a geographic information system, which resulted in new combinations of components. For the landscape classification process the suggestions of Mateo (1984 were followed regarding diagnose Indexes and taxonomic levels, From the landscape maps so obtained six different landscape types were identified for Quintana Roo, three for Campeche and four for Yucatan.

Procamallanus (Spirocamallanus) chetumalensis n. sp. (Nematoda: Camallanidae) from the Mayan sea catfish, Ariopsis assimilis, off the Caribbean coast of México.

Science.gov (United States)

González-Solís, David; Moravec, Frantisek; Vidal-Martínez, Victor M

2002-08-01

Procamallanus (Spirocamallanus) chetumalensis n. sp. is described from the stomach and intestine of the Mayan sea catfish Ariopsis assimilis (Günther, 1864), from the Bay of Chetumal, Quintana Roo, México. It is characterized by bifurcate deirids; males have 3 pairs of preanal papillae, 6 pairs of postanal papillae, 2 pairs of transverse elongate adanal papillae surrounding the cloacal aperture, wide caudal alae, spicules of unequal length, and a gubernaculum, and females have a rounded tail bearing a digit-like process terminating in 2 spines. This is the seventh Procamallanus (Spirocamallanus) species reported from fishes in Mexico and the first one recorded in sea catfishes of the Ariidae.

Beyond Nature Appropriation: Towards Post-development Conservation in the Maya Forest

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Jose E Martinez-Reyes

2014-01-01

Full Text Available The establishment of biosphere reserves in Mexico was followed by alternative livelihood conservation/development projects to integrate indigenous groups into Western style conservation under the idea of sustainable development and participation. In this paper, I discuss the outcomes of two forest wildlife management projects in one Maya community along the Sian Ka′an Biosphere Reserve in the state of Quintana Roo. Both projects ultimately failed and the community mobilised and expelled the NGO from the community. I argue that the failure of these projects involved two dynamics: 1 lack of coherence between the objectives of state agencies, conservation NGOs, and the local community; and 2 unequal ethnic relations, reproducing relations of colonial inequality and dictating how indigenous groups can participate in managing a territory for conservation. If collaboration and local participation are key in conservation management programs, these case studies suggest that greater institutional accountability and community autonomy are needed to make the practice of conservation more democratic and participatory. The expulsion of the NGO as a conservation and development broker also opened the space for, and possibilities of, post-development conservation practice that challenges the normalising expectations of Western biodiversity conservation.

Ämaris valimisreklaami filmimist korraldas ka peaministri büroo / Joosep Värk, Urmas Jaagant ; kommenteerib Sven Mikser

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Värk, Joosep

2014-01-01

Reformierakonna valimisklipp "Kindlalt edasi" filmiti kaitseväe loal Ämari lennubaasis. Kaitseväeteenistuse seaduse järgi aga ei tohi käsuõigust ega distsiplinaarvõimu kasutada erakondlikes huvides. Selgitavad kaitseväe juhataja Riho Terras, peaministri büroo juht Liina Kersna ja julgeolekunõunik Kadri Peeters

Analyzing actual risk in malaria-deferred donors through selective serologic testing.

Science.gov (United States)

Nguyen, Megan L; Goff, Tami; Gibble, Joan; Steele, Whitney R; Leiby, David A

2013-08-01

Approximately 150,000 US blood donors are deferred annually for travel to malaria-endemic areas. However, the majority do not travel to the high-risk areas of Africa associated with transfusion-transmitted malaria (TTM) but visit low-risk areas such as Mexico. This study tests for Plasmodium infection among malaria-deferred donors, particularly those visiting Mexico. Blood donors deferred for malaria risk (travel, residence, or previous infection) provided blood samples and completed a questionnaire. Plasma was tested for Plasmodium antibodies by enzyme immunoassay (EIA); repeat-reactive (RR) samples were considered positive and tested by real-time polymerase chain reaction (PCR). Accepted donors provided background testing data. During 2005 to 2011, a total of 5610 malaria-deferred donors were tested by EIA, including 5412 travel deferrals. Overall, 88 (1.6%) were EIA RR; none were PCR positive. Forty-nine (55.7%) RR donors previously had malaria irrespective of deferral category, including 34 deferred for travel. Among 1121 travelers to Mexico, 90% visited Quintana Roo (no or very low risk), but just 2.2% visited Oaxaca/Chiapas (moderate or high risk). Only two Mexican travelers tested RR; both previously had malaria not acquired in Mexico. Travel to Mexico represents a large percentage of US donors deferred for malaria risk; however, these donors primarily visit no- or very-low-risk areas. No malaria cases acquired in Mexico were identified thereby supporting previous risk estimates. Consideration should be given to allowing blood donations from U.S. donors who travel to Quintana Roo and other low-risk areas in Mexico. A more effective approach to preventing TTM would be to defer all donors with a history of malaria, even if remote. © 2012 American Association of Blood Banks.

[Feeding habits of cichlid species (Perciformes: Cichlidae) in Caobas lake, Quintana Roo, Mexico].

Science.gov (United States)

Valtierra-Vega, M T; Schmitter-Soto, J J

2000-01-01

Feeding habits of seven cichlid species (Archocentrus octofasciatus, A. spilurus, "Cichlasoma" robertsoni, "C." synspilum, "C." urophthalmus, Petenia splendida, Thorichthys meeki) in Lake Caobas, southern Yucatan Peninsula, were studied. Samples were taken with enclosure and cast nets during the dry and rainy seasons of 1995 (day and night). The environment was characterized by measuring temperature, conductivity and pH. All individuals were below 41 mm SL (N = 281). Frequency of occurrence and prey abundance were analyzed. Main prey items were chironomids, mites, copepods, cladocerans, and ostracods. The cichlids fed mainly on zooplankton, with the partial exceptions of P. splendida (piscivore), "C." synspilum and A. spilurus (herbivores). A cluster analysis showed that the most similar trophic spectra were those of T. meeki, "C." robertsoni and "C." salvini, which were also the least diverse. "C." synspilum and A. spilurus had an intermediate distance between their diets and those of other species. The species with the most distinctive feeding composition were P. splendida (with the most diverse and equitable diet) and the omnivore A. octofasciatus (whose diet was the richest one). T. meeki showed quantitative diel, ontogenetic, and seasonal diet changes, but none between sexes. "C." robertsoni, "C." salvini and "C." synspilum differ in food habits in Caobas and in other localities, a fact that underscores the trophic adaptability of cichlids. Trophic overlap between cichlids in Caobas could imply absence of competition, perhaps because resources are abundant in the ecosystem.

Textural and geochemical features of freshwater microbialites from Laguna Bacalar, Quintana Roo, Mexico

OpenAIRE

Castro-Contreras, Set I.; Gingras, Murray K.; Pecoits, Ernesto; Aubet, Natalie R.; Petrash, Daniel; Castro-Contreras, Saulo M.; Dick, Gregory; Planavsky, Noah J.; Konhauser, Kurt O.

2014-01-01

Microbialites provide some of the oldest direct evidence of life on Earth. They reached their peak during the Proterozoic and declined afterward. Their decline has been attributed to grazing and/or burrowing by metazoans, to changes in ocean chemistry, or to competition with other calcifying organisms. The freshwater microbialites at Laguna Bacalar (Mexico) provide an opportunity to better understand microbialite growth in terms of interaction between grazing organisms versus calcium carb...

[General surgery in a rural hospital in the State of Quintana Roo, Mexico].

Science.gov (United States)

Padrón-Arredondo, Guillermo

2006-01-01

The general surgeon maintains extraordinary validity worldwide, especially in countries like the United States, Canada, India, and continents such as Australia and Africa. In addition to their role as a general surgeon, they assist with surgical pathologies in rural areas where there is generally a lack of technology to carry out complicated procedures. Therefore, we undertook this study to determine the number and type of surgical procedures carried out in a rural hospital with three general surgeons, as well as to determine morbidity and respective mortality. The study was retrospective and longitudinal, using descriptive statistics during a 5.5-year period. During the period of June 1999 to December 2004, a total of 651 (100%) surgical procedures were carried out. There were 351 males (53%) and 300 females (47%) with average age of 28.5 +/- 16.0 years. There were 408 (63%) minor surgical procedures accomplished in the operating room: 150 (45%) for females with average age of 25.8 +/- 13.8 years old and 258 (55%) for males with average age of 27.7 +/- 15.5 years old. There were 243 major surgical procedures (37%): for females there were 150 (60%) with average age of 28.4 +/- 11.8 years old and for males there were 93 (40%) with average age of 29.5 +/- 16.6 years old [morbidity, six cases (0.9%) and mortality, two cases (0.3%)]. The demand for surgery in rural areas is not different from the surgery carried out in large cities, although there are limitations. It is important in this regard to adequately prepare the general surgeon in Mexico.

Büroo Fahle majas (Tartu mnt. 84A, Tallinn) : Koger & Partnerid kontor / Lembit Andres Tork, Kristel Jakobson, Jaan F. Port

Index Scriptorium Estoniae

Tork, Lembit Andres

2007-01-01

plaan, 6 värv. vaadet; fotod: Aivo Kallas; kaasa töötasid J. F. Port ja K. Jakobson; L. A.Tork pälvis büroo sisekujunduse eest Eesti Sisearhitektide Liidu 2006. a. ajaloolise interjööri preemia

Generación de bienestar social en México: un estudio DEA a partir del IDH

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JOSÉ CÉSAR NAVARRO-CHÁVEZ

2016-01-01

Full Text Available El presente documento aborda el estudio del uso eficiente de los recursos para generar bienestar social en México durante el periodo 1990-2010; para ello se utilizó el Análisis de la Envolvente de Datos (DEA, tomando como referencia los indicadores socioeconómicos de las tres dimensiones del Índice de Desarrollo Humano (IDH. El análisis de resultados muestra que fueron Baja California Sur, Campeche, Chiapas, Colima, Distrito Federal, Estado de México, Quintana Roo, Tlaxcala y Zacatecas los más eficientes en la generación de bienestar social, haciendo evidente que las entidades con mayores recursos no son necesariamente las que generan mayor bienestar social.

Costa de Cocos 11-kW wind-diesel hybrid system

Energy Technology Data Exchange (ETDEWEB)

Corbus, D. [National Renewable Energy Lab., Golden, CO (United States); Bergey, M. [Bergey Windpower Company, Norman, OK (United States)

1997-12-31

Costa de Cocos is a small resort located in the state of Quintana Roo, Mexico. Using the existing diesel generator, the resort`s power system was retrofitted to a wind-hybrid diesel system. The reason for this retrofit was to supply 24-hour power, to reduce diesel fuel by using wind energy, and to reduce diesel air and noise emissions in order to promote ecotourism. The wind system was installed in October 1996 with cost-shared funding from the U.S. Department of Energy/U.S. Agency for International Development renewable energy program in Mexico. The National Renewable Energy Laboratory (NREL) supplied technical assistance to the project. Discussed in this paper are the system design, installation, and initial performance.

[Tradition, improvisation and modernity in Yucatecan Mayan shamanism: The suhuy art of Juan Cob, h-men of Yaxcabá].

Science.gov (United States)

Boccara, Michel

2017-01-01

Through the history of a Yucatecan Mayan shaman (h-men), this article analyzes the changes and continuities in Yucatecan shamanism and, more specifically, in one of its main functions: tsak, healing. The results presented here are part of fieldwork carried out over 40 years, from 1976 to 2016. The author lives in a community in central Yucatán (Tabi, Sotuta) and has carried out a number of research studies on Yucatecan shamanism in communities in the Mexican states of Yucatán, Campeche and Quintana Roo. Juan Cob, h-men of Yaxcabá, is not only an informant but also the author's friend and neighbor, with whom he has created a number of films.

A new fossil peccary from the Pleistocene-Holocene boundary of the eastern Yucatán Peninsula, Mexico

Science.gov (United States)

Stinnesbeck, Sarah R.; Frey, Eberhard; Stinnesbeck, Wolfgang; Avíles Olguín, Jeronimo; Zell, Patrick; Terrazas Mata, Alejandro; Benavente Sanvicente, Martha; González González, Arturo; Rojas Sandoval, Carmen; Acevez Nuñez, Eugenio

2017-08-01

Here we describe the left mandibular ramus of a fossil peccary from the submerged karst cave system in the southeastern Mexican state of Quintana Roo. The specimen, which was discovered in the Muknal cave northwest of Tulúm, is a new genus and species of peccary termed Muknalia minima. The taxon likely dates from the latest Pleistocene and differs significantly from all extant peccaries and their Pleistocene relatives by a concave notch at the caudal edge of the mandibular ramus and prominent ventrally directed angular process. These diagnostic osteological differences suggest that the masticatory apparatus differed from all other peccaries, which may hint to an ecological isolation on the late Pleistocene Yucatán Peninsula.

Costa de Cocos 11-kW wind-diesel hybrid system

Energy Technology Data Exchange (ETDEWEB)

Corbus, D [National Renewable Energy Lab., Golden, CO (United States); Bergey, M [Bergey Windpower Co., Norman, OK (United States)

1997-09-01

Costa de Cocos is a small resort located in the state of Quintana Roo, Mexico. Using the existing diesel generator, the resort`s power system was retrofitted to a wind-hybrid diesel system. The reason for this retrofit was to supply 24-hour power, to reduce diesel fuel by using wind energy, and to reduce diesel air and noise emissions in order to promote ecotourism. The wind system was installed in October 1996 with cost-shared funding from the U.S. Department of Energy/U.S. Agency for International Development renewable energy program in Mexico. The National Renewable Energy Laboratory (NREL) supplied technical assistance to the project. Discussed in this paper are the system design, installation, and initial performance.

Migración y violencia en Cancún: estudio de dos asentamientos irregulares; Migração e violencia em Cancún: estudo de dois assentamentos irregulares; Migration and violence in Cancún: study of two irregular settlements

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Minerva Alavez San Pedro

2017-07-01

Full Text Available Resumen: El presente texto ofrece una aproximación a las condiciones actuales de violencia en dos asentamientos irregulares de Cancún, que se ubica en el estado de Quintana Roo, México, como consecuencia de la migración laboral que ha experimentado esta localidad desde su creación en 1970 como Centro Turístico Integral. Para elaborar este trabajo se realizó, además de la revisión bibliográfica, un seguimiento hemerográfico de medios de comunicación locales y nacionales y un trabajo etnográfico en las colonias El Milagro y Tres Reyes de abril de 2016 a junio de 2017. De manera general se puede adelantar que las presentes manifestaciones de violencia en Cancún y el continuo surgimiento de asentamientos irregulares ponen en evidencia la incapacidad institucional del Estado para planear y atender las necesidades de seguridad y vivienda de la población. Palabras clave: Cancún, economía, migración, violencia, asentamientos.   Resumo: O presente texto ofrece uma aproximação das condiçõe atuais de violencia em dois assentamentos irregulares em Cancún, que se localiza no estado de Quintana Roo, México, como consequência da migração de trabalhadores que aconteceu nesta localidade desde sua criação em 1970 como Centro Turístico Integral. Para elaborar este trabalho se realizou, ademáis da revisão bibliográfica, um estudo hemerográfico dos meios de comunicação locais e nacionais e um trabalho etnográfico nas colônias de El Milagro e Tres Reyes de abril de 2016 a junho de 2017. De maneira geral se pode antecipar que as presentes manifestações de violencia em Cancún e o contínuo surgimento de assentamentos irregulares colocam em evidencia a capacidade institucional do Estado para planejar e atender as necesidades de segurança e vivência da população. Palavras-chaves: Cancún; economía; migração; violencia; assentamentos.   Abstract: The present text offers an approximation to the current conditions of

Mu ema must roos : [luuletused] / S{u00E1ndor Cso̤ri

Index Scriptorium Estoniae

Cso̤ri, S{u00E1ndor

2004-01-01

Sisu: Mu ema must roos ; Viinamägi, enne sõda ; Su lauba hämarusest ; Cantata profana ; Kolmandal päeval hakkas sadama lund ; Ema jutt ; Lume mälestus ; Lampide ja rusikate ette ; Kümnes õhtu ; Jutustab koit ; Oleksid kehv taevaelanik ; Päikesevalgus ja must öine põldmari ; Kiri põhjast ; Öösel koputab moon ; Keegi su sõber ; Rajan endale teed ; Ülestunnistus Linnale ; Lesknaised tantsivad ; Värvimata jäänud silmalaugude eleegia ; 1956. aasta novembri mälestuseks ; Vihane tund ; Sel ajal jaanuaris. Eluloolisi andmeid autori kohta lk. 389-391

CALIDAD DEL AGUA EN POZOS DE ISLA COZUMEL, MÉXICO

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Luz de Lourdes Aurora Coronado Alvarez

2011-04-01

Full Text Available Se analizaron in situ y en el laboratorio, variables físicas y químicas informativas de la calidad de agua subterránea de 14 pozos ubicados en el área de mayor uso de agua dulce de la isla Cozumel, Quintana Roo, México durante un ciclo anual (noviembre 2007 a octubre 2008. Se contrastaron los valores obtenidos con la normatividad nacional e internacional de calidad de agua para uso potable; contribuyendo con información que por un lado permitió determinar áreas con mejor calidad de agua y por otro, evaluar el comportamiento de las variables a escala temporal. Con una prueba de Kruskal-Wallis (p

Science.gov (United States)

Morisset, C.; Delgado-Inglada, G.; Torres-Peimbert, S.

2014-04-01

Most - if not all - planetary nebulae exhibit a complex structure, far from the spherical shape. The reasons for this dramatic change in symmetry, that occurs in early stage of the development of the nebula, remain controversial. The same physics operates in a variety of stars, from young (winds from young stars and/or high mass stars) to old (novae, symbiotic stars). The aim of the APN series of conferences has been to offer the opportunity to anyone involved in the study of asymmetric planetary nebulae (and related objects) to discuss the latest results obtained in this field. The APN VI conference was organized by the Instituto de Astronomia (UNAM) and took place on Riviera Maya, Quintana Roo, México, 4-8 Nov. 2013

The earliest settlers of Mesoamerica date back to the late Pleistocene.

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Wolfgang Stinnesbeck

Full Text Available Preceramic human skeletal remains preserved in submerged caves near Tulum in the Mexican state of Quintana Roo, Mexico, reveal conflicting results regarding 14C dating. Here we use U-series techniques for dating a stalagmite overgrowing the pelvis of a human skeleton discovered in the submerged Chan Hol cave. The oldest closed system U/Th age comes from around 21 mm above the pelvis defining the terminus ante quem for the pelvis to 11311±370 y BP. However, the skeleton might be considerable older, probably as old as 13 ky BP as indicated by the speleothem stable isotope data. The Chan Hol individual confirms a late Pleistocene settling of Mesoamerica and represents one of the oldest human osteological remains in America.

Namalycastis occulta n. sp. and a new record of N. borealis (Polychaeta: Nereididae: Namanereidinae) from the Northwestern Caribbean Sea.

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Conde-Vela, Víctor Manuel

2013-01-01

The nereidid polychaete genus Namalycastis Hartman, 1959 has been recorded almost exclusively in non-marine environments. This genus includes species having four pairs of tentacular cirri, and its species mainly differ by the relative size of dorsal cirri in posterior chaetigers. Namalycastis occulta n. sp. is described based upon non-mature and mature specimens collected in the intertidal from Chetumal Bay, Quintana Roo, Mexico. Its distinctive features are the lack of notopodial spinigers, eyes, and teeth in the mandibles. Namalycastis borealis Glasby was found in Tamalcab Island, Chetumal Bay and it is the first record for Mexico. Analyses of the intraspecific variability, a key to the known species in the Grand Caribbean region, and commentaries about some taxonomic topics are also included.

MINUIT package parallelization and applications using the RooFit package

International Nuclear Information System (INIS)

Lazzaro, Alfio; Moneta, Lorenzo

2010-01-01

The fitting procedures are based on numerical minimization of functions. The MINUIT package is the most common package used for such procedures in High Energy Physics community. The main algorithm in this package, MIGRAD, searches the minimum of a function using the gradient information. For each minimization iteration, MIGRAD requires the calculation of the derivative for each free parameter of the function to be minimized. Minimization is required for data analysis problems based on the maximum likelihood technique. The calculation of complex likelihood functions, with several free parameters, many independent variables and large data samples, can be very CPU-time consuming. Then, the minimization process requires the calculation of the likelihood functions several times for each minimization iteration. In this paper we will show how MIGRAD algorithm and the likelihood function calculation can be easily parallelized using Message Passing Interface techniques. We will present the speed-up improvements obtained in typical physics applications such as complex maximum likelihood fits using the RooFit package.

The Quaternary Environmental Change in the Northeast of Quintana Roo, Mexico:The Paleopedological Proxies

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Cabadas Báez, H. V.; Sedov, S.; Solleiro Rebolledo, E.

2010-03-01

The Yucatán Peninsula, located in the southeast part of Mexico, is characterized to be an extended and low altitude platform constituted by calcareous rocks. These rocks are mainly limestones formed since Cretaceous under a marine shelf environment. In the northeast coast, the youngest sediments are found, as products of Quaternary sea level changes. We studied various profiles in quarries, following north-south transect in the Yucatan coast, near Cancún. In such profiles a sequence consisting of different kind of calcareous sediments and a soil in the surface were analyzed. The base of the sequence is constituted by a petrocalcic horizon (calcrete) that was formed during the last interglacial, 125,000 yrs. ago. Under the calcrete, a transgressive sequence appears with calcareous sediments of lagoon and reef facies. The uppermost part consists of dune-like sediments with crossed stratification overlied by another petrocalcic horizon, maybe formed during the Pleistocene-Holocene transition. Soils of the Yucatan Peninsula are very thin, rich in organic matter, neutral and well structured, and their image do not correspond to that found in tropical soils (deep, strongly weathered, leached). They are directly associated with the dune sediment dissolution because are infilling the "space" generated by rock dissolution. Calcrete is always in the uppermost part, but is broken and crossed by soil. This sequence reveals some aspects of the environmental dynamic during Late Pleistocene-Holocene. First, a dryer environment is assumed due to the presence of the calcrete in the base. During the glacial period, a transgressive environment prevailed and marine calcareous sedimentation started. During Last Glacial Maximum a regression occurred, the climate was drier and the formation of dune sediments and another calcrete occurred. In the Holocene climate changed shifting toward more humid conditions that produced the modern soil cover, under tropical conditions.

[Growth of Strombus gigas (Gastropoda: Strombidae) snail in 4 environments of Quintana Roo, Mexico].

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Navarrete, A J

2001-03-01

The growth rate of queen conch cultured in pens was studied from October 1993 to March 1994. Sixteen pens (50 m2 each, four pens per environment), were set in four environments: Thalassia, Thalassia-sand, Sand and Coral within a reef lagoon on Punta Gavilan and Banco Chinchorro. Twenty conchs were introduced in each pen (sizes: 100-120, 120-140, 140-160 and 160-180 mm shell length) and measured monthly to the nearest mm. Growth rate was assessed by two methods: a) shell marginal mean increase and b) the Gulland-Holt method considering all conch within pens. In the first method, the environment Sand had the highest growth (3.21 +/- 0.26 mm/month) at Punta Gavilan, whereas at Banco Chinchorro, highest growth was recorded in Coral (2.31 +/- 0.44 mm/month). Considering the second method, highest asymptotic length conch in Punta Gavilan occurred in Thalassia-sand (287.5 mm), whereas in Banco Chinchorro the highest asymptotic length was measured in Sand (318.1 mm). There were significant differences in growth between sites; juvenile growth is related with habitat quality mainly food availability.

[Reproductive aspects of Pomacea flagellata (Mollusca: Ampullariidae) at Bacalar lagoon, Quintana Roo, México].

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Oliva-Rivera, José J; Ocaña, Frank A; Navarrete, Alberto de Jesús; Carrillo, Rosa M de Jesús; Vargas-Espósitos, Abel A

2016-12-01

The freshwater snail Pomacea flagellata is native from Southeastern Mexico. Studies about this species are scarce and none has treated their reproduction. This snail has been exploited at Bacalar lagoon for many years, leading to a significant decrease in their abundance and currently, a permanent ban was proposed by the government. This work aimed to assess the temporal variations of mating frequency and the abundance of egg clutches of P. flagellata at Bacalar lagoon, as well as their relation with snails density and environmental variables. Sampling was done during the three climatic seasons: Rainy (July, August and September/2012), North or Cold fronts (December/2012 and January and February/2013) and Dry (March, April and May/2013) in 12 sampling stations located along the Bacalar lagoon. On each station a transect of 100 m length was set parallel to the edge, and the number of fresh egg clutches (pink color) laid over vegetation, rocks or manmade structures, were counted. In the water, three 50 x 2 m transects were set and the number of snails were counted as well as the mating frequency. Density of snails varied significantly among seasons, decreasing from the rainy to the dry season. There were no significant differences of snail abundance among months, nested in climatic seasons (ANOVA, p>0.05). During the rainy season the mating frequency was significantly higher than in the Norths, meanwhile in the dry season no mating were registered (Kruskal-Wallis, p˂0.05). Eggs clutches appeared from July to March. Density of egg clutches presented no differences between the Rainy and the North seasons (2.72 and 2.93 clutches/m, respectively), nonetheless during the dry season abundance of egg masses was significantly lower (0.1 clutches/m) (H, p˂0.05). Mating frequency was related with snail abundance (rs= 0.26; p<0.05) and water temperature (rs= 0.34; p<0.05) and the abundance of egg masses is related with snail abundance (rs= 0.46; p<0.05). In general, we observed that reproductive activity of P. flagellata at Bacalar lagoon is related with the warmer months and with higher rainfall. This finding is relevant to support the management of this resource in the region, so that to implement any management arrangement they must be aware that a temporal ban is necessary during the reproductive season at least.

Un aporte de Carlos Guastavino y Lima Quintana al mundo de la Nueva Canción argentina Carlos Guastavino and Lima Quintana's contribution to the world of the Argentinean New Song

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Silvina Luz Mansilla

2011-06-01

Full Text Available El artículo se refiere a la canción Hermano compuesta por el músico Carlos Guastavino sobre una poesía de Hamlet Lima Quintana. Dedicada al editor Rómulo Lagos, fue grabada por Mercedes Sosa en 1966. Incluida como pista inicial del disco de la cantante tucumana al cual le dio su nombre, la canción constituye una evidencia de la simpatía del compositor con los postulados centrales del Nuevo Cancionero argentino. El trabajo comprende una aproximación a la temática del poema, el análisis musical de la partitura, la puesta en contexto de las circunstancias de composición y difusión y la descripción de la versión grabada por Mercedes Sosa. Aplicando la noción "mundos del arte" de Howard BECKER (1982, se interpreta la red de personas ligadas a la editorial Lagos como un tejido cooperativo que funcionó con eficacia hasta mediados de la década de 1970. Un esbozo del contexto posterior, signado por la censura, permite inferir algunos factores que incidieron en el quiebre de esa red de colaboraciones. Aunque respecto de Guastavino, se habla aquí de vinculación y no de pertenencia.Study about the song Hermano by Argentinean composer Carlos Guastavino written after a poem by Hamlet Lima Quintana. Dedicated to the editor Rómulo Lagos, the song was recorded by the Argentinean singer Mercedes Sosa in 1966. Included as the first track in that record (to which it gave its name, the song constitutes an evidence of the composer's sympathy with the central postulates of the Argentinean New Song. This paper's perspective integrates the poem's subject, the score's musical analysis, the study of the context concerning with the composition and spreading circumstances and the description of the performance recorded by Mercedes Sosa. Applying the notion of "art worlds" by Howard BECKER (1982, we interpret the persons net connected with Lagos publishing, as a co-operative and interwoven fabric that effectively worked until the mid 1970s. A sketch of

Análisis antropológico de los restos humanos de la necrópolis medieval de Quintana (Leza, Álava

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Fernández Crespo, T.

2010-01-01

Full Text Available Se presenta una síntesis de los resultados obtenidos en el estudio antropológico de más de un centenar de sujetos inhumados en la necrópolis medieval de Quintana (Leza, Álava, la cual muestra un excepcional número de amortizaciones o reutilizaciones sepulcrales. Se evidencia un esquema demográfico caracterizado por un inusual predominio del colectivo subadulto. Destacan asimismo la preeminencia de tallas medianas y la presencia de artropatías degenarativas como patologías más comunes.

Horizontal movements, migration patterns, and population structure of whale sharks in the Gulf of Mexico and northwestern Caribbean sea.

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Hueter, Robert E; Tyminski, John P; de la Parra, Rafael

2013-01-01

Whale sharks, Rhincodon typus, aggregate by the hundreds in a summer feeding area off the northeastern Yucatan Peninsula, Mexico, where the Gulf of Mexico meets the Caribbean Sea. The aggregation remains in the nutrient-rich waters off Isla Holbox, Isla Contoy and Isla Mujeres, Quintana Roo for several months in the summer and then dissipates between August and October. Little has been known about where these sharks come from or migrate to after they disperse. From 2003-2012, we used conventional visual tags, photo-identification, and satellite tags to characterize the basic population structure and large-scale horizontal movements of whale sharks that come to this feeding area off Mexico. The aggregation comprised sharks ranging 2.5-10.0 m in total length and included juveniles, subadults, and adults of both sexes, with a male-biased sex ratio (72%). Individual sharks remained in the area for an estimated mean duration of 24-33 days with maximum residency up to about 6 months as determined by photo-identification. After leaving the feeding area the sharks showed horizontal movements in multiple directions throughout the Gulf of Mexico basin, the northwestern Caribbean Sea, and the Straits of Florida. Returns of individual sharks to the Quintana Roo feeding area in subsequent years were common, with some animals returning for six consecutive years. One female shark with an estimated total length of 7.5 m moved at least 7,213 km in 150 days, traveling through the northern Caribbean Sea and across the equator to the South Atlantic Ocean where her satellite tag popped up near the Mid-Atlantic Ridge. We hypothesize this journey to the open waters of the Mid-Atlantic was for reproductive purposes but alternative explanations are considered. The broad movements of whale sharks across multiple political boundaries corroborates genetics data supporting gene flow between geographically distinct areas and underscores the need for management and conservation strategies for

Justicia indígena maya en el sureste de México

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Juana Luisa Ríos Zamudio

2011-01-01

Full Text Available A más de diez años de haberse implementado en Quintana Roo, México, un sistema de justicia propio para las comunidades mayas de la entidad, y pese a lo acelerado de su crecimiento y arraigo, su estructura, funcionamiento y principios éticos que lo rigen han sido poco estudiados. Este trabajo tiene como objetivo analizar su funcionamiento desde la sociología jurídica, tomando como base las constancias de actuación de los jueces tradicionales. Se podrá ver que gracias a su polivalente actuación, los jueces tradicionales son hoy una figura socialmente legitimada al interior de las comunidades mayas, aun habiendo sido creada e implementada "desde fuera" por las autoridades estatales hace apenas poco más de una década.

The machine learning in the prediction of elections

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M.S.C. José A. León-Borges

2015-05-01

Full Text Available This research article, presents an analysis and a comparison of three different algorithms: A.- Grouping method K-means, B.-Expectation a convergence criteria, EM and C.- Methodology for classification LAMDA, using two software of classification Weka and SALSA, as an aid for the prediction of future elections in the state of Quintana Roo. When working with electoral data, these are classified in a qualitative and quantitative way, by such virtue at the end of this article you will have the elements necessary to decide, which software, has better performance for such learning of classification. The main reason for the development of this work, is to demonstrate the efficiency of algorithms, with different data types. At the end, it may be decided, the algorithm with the better performance in data management.

Sand flies naturally infected by Leishmania (L.) mexicana in the peri-urban area of Chetumal city, Quintana Roo, México.

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Sánchez-García, Laura; Berzunza-Cruz, Miriam; Becker-Fauser, Ingeborg; Rebollar-Téllez, Eduardo A

2010-06-01

The surveillance of prevalent Leishmania sand fly vectors is an important issue for epidemiological studies in populated areas where leishmaniasis is endemic. In this study, we collected sand flies from a peri-urban area in the southeast of Mexico. Natural infection with Leishmania (L.) mexicana was studied by PCR using a Leishmania internal transcribed spacer of the ribosomal RNA gene for amplification. Infected Lutzomyia olmeca olmeca, Lu. shannoni and Lu. cruciata sand flies were collected mainly during the high transmission season (November to March), coinciding with the highest sand fly densities. Additionally, positive specimens of Lu. olmeca olmeca were also captured during July and August. The infected sand flies were from primary forest (subperennial forest) and secondary forest (18-25 years old and 10-15 years old respectively). Sand flies collected with Disney and Shannon traps were the ones found to be infected with L. (L.) mexicana. We conclude that the high-risk period in which L. (L.) mexicana is transmitted in the peri-urban area of Chetumal City is from July to March and that transmission is associated with both the subperennial forest and the secondary forest. 2010 Royal Society of Tropical Medicine and Hygiene. Published by Elsevier Ltd. All rights reserved.

Environmental pollution study by Hg, Pb, Cd, and Zn in Chetumal bay, Quintana Roo, Mexico

International Nuclear Information System (INIS)

Diaz Lopez, Cristina; Carrion Jimenez, Jose; Gonzales Bucio, Jose

2006-01-01

The environmental pollution by heavy metals in Chetumal Bay was studied, quantifying mercury, lead, cadmium and zinc concentrations in mussels tissue (Mytilopsis sallei) and sea sediments by collecting samples in two seasons of the year (drought and rainy). Moreover, determining the motion of Cd, Pb and Zn in sediments using a BCR's sequential extraction scheme and identifying the different mineral phases by X-ray diffraction. From this study, it was observed that the Pb, Cd and Zn concentrations were lower in mussels than sediments. However the concentrations profiles for these metals are similar in mussels and sediments. Statistical correlations from the results are presented and discussed. The results obtained are in good agreement with published values for polluted sediments

Carbon Sequestration under different land uses and soils in the State of Quintana Roo, Mexico

OpenAIRE

Tsao, Chang-Hong (M.Sc. Natural Resources Management and Development )

2017-01-01

Rising in global temperature is evidently related to atmospheric carbon dioxide (CO2) and methane (CH4) concentrations; this has become an environmental problem. The use of renewable energy, the development of eco-friendly merchandise and the enforcement of biomass management have been proposed to mitigate the issue. In the ecosphere, the pedosphere stores 1,500 to 2,500 PgC, which is four times more than the carbon stored in biomass; hence, it is very important to carry out soil carbon studi...

Symbolism and ritual practices related to hunting in Maya communities from central Quintana Roo, Mexico.

Science.gov (United States)

Santos-Fita, Dídac; Naranjo, Eduardo J; Estrada, Erin I J; Mariaca, Ramón; Bello, Eduardo

2015-09-29

Some Mayan peasant-hunters across the Yucatan Peninsula in Mexico still carry out a hunting ritual -Loojil Ts'oon, Loj Ts'oon or Carbine Ceremony- in which they renew the divine permission for hunting in order to continue deserving the gift of prey after a period of hunt. Thus they are granted access to game by the gods and the Lords of the Animals, particularly the spirit/evil-wind call. This paper focuses on the acts within the Loojil Ts'oon -which is performed in the X-Pichil community and surrounding area- that make it unique among the hunting rituals performed in other parts of the Peninsula. The Loojil Ts'oon hunting ritual was observed and registered in audiovisual format in two different occasions in X-Pichil (Friday 04/29/2011 and Friday 07/29/2011). Afterwards, we delivered digital videodisks (DVD) to hunters and their families and to the j-men (the magic-medic-ritual specialist) who participated in these ceremonies. This delivery produced confidence among participants to talk more openly and in-depth about the Loojil Ts'oon, revealing symbolic, psychological, and material details previously unknown to outsiders. Qualitative information was obtained through the ethnographic method using techniques such as participant observation and guided tours. Semi-structured interviews were carried out to obtain complementary information. On one hand, we describe the preparation and cleansing of the "Sip soup", as well as its parading and distribution -delivery to the spirit/evil-wind Sip- on the streets of the community (highlingting the role of the rooster as a counter-gift). On the other hand, the cleansing of the jaws (of deer: Odocoileus virginianus, Mazama spp.; and peccaries: Tayassuidae) and their return to the Lords of Animals in the hills so that they may give these animals new life. By performing the Loojil Ts'oon, the act of killing an animal is legitimized. The kill transforms into an exchange to perpetuate life, in which gods and Lords of animals grant the hunter the solicited new game if he has completed his ritual duties and has not broken the prescribed hunting rules. The Loojil Ts'oon does not only represent the continuity and regeneration of animals, that is, fauna as a resource, but also of the whole hunting cycle. The hunter does so to maintain and recreate order and equilibrium in one's relationship with nature as a whole, with the rest of one's social group, and with oneself. Thus, hunting transcends the exclusively material dimension of a subsistence activity.

Crecimiento del caracol Strombus gigas (Gastropoda: Strombidae en cuatro ambientes de Quintana Roo, México

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Alberto de Jesús Navarrete

2001-03-01

Full Text Available Se estudió la tasa de crecimiento de caracoles cultivados en corrales en cuatro ambientes diferentes. El cultivo se realizó de octubre de 1993 a marzo de 1994. 16 corrales de 50 m² de área cada uno, cuatro por ambiente, fueron colocados en los siguientes ambientes: Thalassia, Thalassia-arena, Arena y Coral, todos dentro de la laguna arrecifal en Punta Gavilán y Banco Chinchorro. En cada ambiente se introdujeron 20 caracoles de las siguientes tallas: 1 100-120, 2 120-140, 3 140-160 y 4 160-180 mm de longitud de concha. Los caracoles se midieron mensualmente con un vernier con una precisión de un mm. El crecimiento se evaluó por dos métodos: a el incremento marginal promedio de la concha y por el método de Gulland-Holt. En el primer método, el ambiente Arena mostró el mayor crecimiento (3.21 + 0.26 mm/mes en Punta Gavilán, mientras que en Banco Chinchorro, el mayor crecimiento ocurrió en coral (2.31 + 0.44 mm/mes. Con el segúndo método la mayor longitud asintótica en Punta Gavilán se midió en Thalassia-arena (287.5 mm, mientras que en Banco Chinchorro, la mayor longitud asintótica se midió en Arena (318.1 mm. Existieron diferencias significativas en el crecimiento entre los sitios y eso muestra que el crecimiento de los juveniles se relaciona con la cantidad de alimento disponible el cual fue mayor en Thalassia y Thalassia-arena. Sin embargo se requiere evaluar la cantidad de alimento, principalmente microfitobentos en los ambientes sin vegetación como Arena y Coral.The growth rate of queen conch cultured in pens was studied from October 1993 to March 1994. Sixteen pens (50 m² each, four pens per environment, were set in four environments: Thalassia, Thalassia-sand, Sand and Coral within a reef lagoon on Punta Gavilan and Banco Chinchorro. Twenty conchs were introduced in each pen (sizes: 100-120, 120-140, 140-160 and 160-180 mm shell length and measured monthly to the nearest mm. Growth rate was assessed by two methods: a shell marginal mean increase and b the Gulland-Holt method considering all conch within pens. In the first method, the environment Sand had the highest growth (3.21 + 0.26 mm/month at Punta Gavilan, whereas at Banco Chinchorro, highest growth was recorded in Coral (2.31 + 0.44 mm/month. Considering the second method, highest asymptotic length conch in Punta Gavilan occurred in Thalassia-sand (287.5 mm, whereas in Banco Chinchorro the highest asymptotic length was measured in Sand (318.1 mm. There were significant differences in growth between sites; juvenile growth is related with habitat quality mainly food availability.

Cultural and Climatic History of Cobá, a Lowland Maya City in Quintana Roo, Mexico

Science.gov (United States)

Leyden, Barbara W.; Brenner, Mark; Dahlin, Bruce H.

1998-01-01

Lake Cobá, within the archaeological site of Cobá, provides evidence bearing on lowland Maya development. Palynological and geochemical data record multidecadal precipitation cycles from a 8.80-m, >8370-yr lake-sediment sequence terminating on bedrock. Late Classic sedimentation rates are rapid, but an anthropogenically derived colluvium layer is lacking. Initial vegetation was medium semi-deciduous and swamp forest. Forest clearance began 1650 B.C. (Early Preclassic) and maize first occurred at 850 B.C. (Middle Preclassic). Lakeside milpas existed until A.D. 720 (Late Classic) and then were moved from the city center as urbanization intensified and Lake Cobá was diked as a reservoir. Cobá was at most briefly vacated during the Classic Collapse and was abandoned after A.D. 1240, although some habitation persisted. The paleoecological record matches the archaeological history for Cobá, but pervasive disturbance muted the climatic signal, as the Late Classic drought is barely evident. The question whether economic trees were maintained within the city is unresolved. Maize cultivation allowed the Maya to develop a complex society and support a large population, but dependence on maize was ultimately doomed by variable rainfall. Precipitation in extreme years was insufficient to support crops, while native vegetation was not directly affected by drought that devastated Maya agriculture.

Leishmania spp. Epidemiology of Canine Leishmaniasis in the Yucatan Peninsula

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A. López-Céspedes

2012-01-01

Full Text Available Canine Leishmaniasis is widespread in various Mexican states, where different species of Leishmania have been isolated from dogs. In the present study, we describe the detection of L. braziliensis, L. infantum, and L. mexicana in serum of dogs from the states of Yucatan and Quintana Roo in the Yucatan Peninsula (Mexico. A total of 412 sera were analyzed by ELISA using the total extract of the parasite and the iron superoxide dismutase excreted by different trypanosomatids as antigens. We found the prevalence of L. braziliensis to be 7.52%, L. infantum to be 6.07%, and L. mexicana to be 20.63%, in the dog population studied. The results obtained with ELISA using iron superoxide dismutase as the antigen were confirmed by western blot analysis with its greater sensitivity, and the agreement between the two techniques was very high.

Leishmania spp. epidemiology of canine leishmaniasis in the Yucatan Peninsula.

Science.gov (United States)

López-Céspedes, A; Longoni, S S; Sauri-Arceo, C H; Sánchez-Moreno, M; Rodríguez-Vivas, R I; Escobedo-Ortegón, F J; Barrera-Pérez, M A; Bolio-González, M E; Marín, C

2012-01-01

Canine Leishmaniasis is widespread in various Mexican states, where different species of Leishmania have been isolated from dogs. In the present study, we describe the detection of L. braziliensis, L. infantum, and L. mexicana in serum of dogs from the states of Yucatan and Quintana Roo in the Yucatan Peninsula (Mexico). A total of 412 sera were analyzed by ELISA using the total extract of the parasite and the iron superoxide dismutase excreted by different trypanosomatids as antigens. We found the prevalence of L. braziliensis to be 7.52%, L. infantum to be 6.07%, and L. mexicana to be 20.63%, in the dog population studied. The results obtained with ELISA using iron superoxide dismutase as the antigen were confirmed by western blot analysis with its greater sensitivity, and the agreement between the two techniques was very high.

A new species of Dentiphilometra (Nematoda: Philometridae) from the musculature of the gray snapper Lutjanus griseus (osteichthyes) off the Caribbean coast of Mexico.

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González-Solís, David; Moravec, Frantisek; Paredes, Vielka M Tuz

2007-10-01

A new nematode, Dentiphilometra lutjani n. sp. (Philometridae), is described from gravid females (the male is unknown) collected from the body musculature of the marine perciform fish gray snapper, Lutjanus griseus (Lutjanidae), from the Bay of Chetumal and southern coast of Quintana Roo, off the Caribbean coast of Mexico. The new species differs from the only other congener, Dentiphilometra monopteri, from the swamp eel Monopterus albus in China, mainly in the body length of gravid female (15.40-53.21 mm), the shape of the posterior body end (not markedly narrowed, with low caudal projections), the esophageal gland (maximum width near its posterior end), and the length (344-483 microm) of larvae from the uterus; both species also differ in their host types (marine perciform fish vs. freshwater swamp eel) and geographical distribution (Mexico vs. China).

Evidence for Wild Crocodiles as a Risk for Human Leptospirosis, Mexico.

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Pérez-Flores, Jonathan; Charruau, Pierre; Cedeño-Vázquez, Rogelio; Atilano, Daniel

2017-03-01

Sentinel species such as crocodilians are used to monitor the health of ecosystems. However, few studies have documented the presence of zoonotic diseases in wild populations of these reptiles. Herein we analyzed 48 serum samples from Crocodylus acutus (n = 34) and C. moreletii (n = 14) from different sites in the state of Quintana Roo (Mexico) to detect antibodies to Leptospira interrogans by means of a microscopic agglutination test (MAT). Crocodylus acutus and C. moreletii tested positive to 11 and 9 serovars, respectively, with Grippotyphosa being the serovar with the highest prevalence in Cozumel island (100%), Banco Chinchorro Biosphere Reserve (70.6%), and Río Hondo (100%), while in Chichankanab Lake, it was Bratislava (75%). Titers ranged from 1:50 to 1:3200, and the most frequent was 1:50 in all study sites. Leptospira is present in fresh and saltwater individuals due to the resistance of the bacterium in both environments. Cases of infected people involved with crocodile handling and egg collection suggest that these reptiles could play an important role in the transmission of leptospirosis. Preventive medicine programs should consider the monitoring of reptiles, and testing the soil and water, to prevent outbreaks of leptospirosis in facilities containing crocodiles.

Geochemical And Hydrodynamic Behavior Of The Karstic Aquifer System In The Portion Between Akumal And Boca Paila, In The South Eastern Coast Of The Yucatan Peninsula.

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Velazquez Oliman, G.; Leal Bautista, R. M.; Perry, E. C.; Carrol, M.; Wagner, N.; Castillo Oliman, P.

2008-12-01

We report here aspects of the geochemistry and hydrodynamics of a nearly 450 km2 area that constitutes part of the rapidly developing tourist corridor between Akumal and Boca Paila, Quintana Roo, Mexico. Some of the largest explored submerged cave systems in the world, including Nohoch Nah Chic and Dos Ojos, are within the study area. The presence of these and other highly permeable conduits highlights the importance of a better understanding of the aquifer system both to assess its vulnerability and to facilitate sustainable water management. This study focuses on major ion, trace element, and stable isotope geochemistry of groundwater and on monitoring system hydrodynamics through water levels measurements. Sampling along approximately 30 km of coast was accomplished by means of a network of 29 sampling sites arranged along three NW-SE transverse lines running approximately perpendicular to the coast and each extending about 16 km inland. To date 52 samples have been taken. In addition, vertical specific conductivity profiles have helped delineate the thickness of the freshwater lens, which has a maximum thickness of 33.5 m in the southwestern part of the study area, approximately 13.5 km from the coast. In the northeastern corner of the study area, 7.5 m of brackish water overlies sea water near the coast. Water level monitoring is by means of Schlumberger pressure transducers installed at 11 sites. Water table changes record tidal oscillation, confirming the interconnectedness of the system, an observation supported by conductivity measurements that indicate oscillatory vertical movement of the saline interface. (SO4/Cl) ratios, expressed as 1000(SO4/Cl) in meq/kg, are useful tracers of groundwater provenance. The ratio is approximately 100 for seawater and is much greater for groundwater in southern Quintana Roo that has dissolved evaporite (Perry et al, 2002). Ratios in the study area, which are 100 or less, indicate no contact with evaporite. Background

Anatomía y usos de la madera de siete árboles tropicales de México

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Silvia Rebollar

2000-06-01

Full Text Available Se describe la anatomía de la madera de Coccoloba cozumelensis, Coccoloba spicata, Gymnanthes lucida, Blomia cupanioides, Canella winterana, Aspidosperma megalocarpon y Ehretia tinifolia. La madera provino de árboles recolectados en la selva mediana subperennifolia en tres municipios del estado de Quintana Roo, México. Las especies son importantes porque tradicionalmente los campesinos de las diferentes localidades les han dado usos diversos a la madera en manufactura de muebles, herramientas, en construcción de casas habitación, en postes, cercas, tablones, durmientes y leña. Se hizo la descripción de la anatomía microscópica en preparaciones fijas de los tres cortes típicos de la madera y en material disociado; la macroscópica en tablillas de xiloteca. Las especies presentan porosidad difusa, puntuaciones areoladas alternas y placas simples, rayos numerosos, pequeños y finos; las fibras libriformes, la mayoría cortas y de diámetro fino; el material ergástico presente en forma de gomas, cristales de carbonato de calcio y sílice. La estructura anatómica de la madera les confieren cualidades estéticas, de peso, dureza, resistencia mecánica y al deterioro que responden a los usos tradicionales que en forma empírica les han dado los campesinos mayas y las hacen versátiles para destinarlas a diversos usos.The wood anatomy of Coccoloba cozumelensis Hemsl., Coccoloba spicata Lundell, Gymnanthes lucida Sw., Blomia cupanioides Miranda, Canella winterana (L. Gaertn., Aspidosperma megalocarpon Müell Arg. and Ehretia tinifolia L., is described. One tree per species was collected in the tropical rain forest of Quintana Roo, Mexico. Their wood has important traditional uses in furniture, tools, rural buildings, posts, fences railroads and firewood. Macroscopic and microscopic characteristics were described and measured in wood samples, permanent slides and macerated material. These species have diffuse porosity, alternate vessel pits

El impacto de las políticas de apoyo a las Micro, Pequeñas y Medianas Empresas en México.

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Sansores Guerrero, Edgar

2010-12-01

Full Text Available En los últimos veinte años se ha dado un amplio debate en la teoría y política económica sobre la necesidad de la intervención gubernamental, a través de una política industrial que fomente el desarrollo económico. En México, el diseño de las políticas de apoyo para Micro, Pequeñas y Medianas Empresas (MiPyME ha estado sujeto a la consideración de cuestiones acerca de la relevancia del tamaño como variable de restricción de las capacidades y oportunidades de estas empresas en el mercado. El objetivo principal de esta investigación es evaluar el impacto en el desarrollo de las políticas destinadas al fomento de la competitividad MiPyME en el estado de Quintana Roo, México.

Resurrection of Anolis ustus Cope, 1864 from synonymy with Anolis sericeus Hallowell, 1856 (Squamata, Dactyloidae).

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Lara-Tufiño, José Daniel; de Oca, Adrián Nieto-Montes; Ramírez-Bautista, Aurelio; Gray, Levi N

2016-01-01

In this study, based on a morphological analysis, the resurrection of the name Anolis ustus Cope 1864, is proposed for populations from the Yucatán Peninsula (Campeche, Yucatán, and Quintana Roo, Mexico, and Belize), formerly referred as Anolis sericeus Hallowell, 1856. Anolis ustus differs from Anolis sericeus by its mean snout-vent length and number of gorgetal scales in males, in tibia length and head width in females, and dorsal and ventral scales for both sexes. In addition, Anolis ustus has a small dewlap of similar size between males and females, whereas in Anolis sericeus males have a dewlap much larger than that of the females. These characteristics allow Anolis ustus to be identified within the Anolis sericeus complex. In this study, a description of the characteristics of the hemipenis is also provided, and its importance in the taxonomy of Anolis is discussed.

Range extensions along western Atlantic for Epialtidae crabs (Brachyura, Majoidea genera Acanthonyx Latreille, 1828 and Epialtus H. Milne Edwards, 1834

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Ana Francisca Tamburus

Full Text Available The present study provided information extending the known geographical distribution of three species of majoid crabs, the epialtids Acanthonyx dissimulatus Coelho, 1993, Epialtus bituberculatus H. Milne Edwards, 1834, and E. brasiliensis Dana, 1852. Specimens of both genera from different carcinological collections were studied by comparing morphological characters. We provide new data that extends the geographical distributions of E. bituberculatus to the coast of the states of Paraná and Santa Catarina (Brazil, and offer new records from Belize and Costa Rica. Epialtus brasiliensis is recorded for the first time in the state of Rio Grande do Sul (Brazil, and A. dissimulatus is reported from Quintana Roo, Mexico. The distribution of A. dissimulatus, previously known as endemic to Brazil, has a gap between the states of Espírito Santo and Rio de Janeiro. However, this restricted southern distribution is herein amplified by the Mexican specimens.

MODELACIÓN DE ECUACIONES ESTRUCTURALES PARA LA EVALUACIÓN FORMATIVA DE LOS PROGRAMAS EDUCATIVOS

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Aida Rodríguez Hernández

2007-09-01

Full Text Available

En la Universidad de Quintana Roo, México, buscando un sistema de evaluación de la calidad enfocado a orientar de modo dinámico las acciones hacia las metas de calidad deseadas en las carreras de ingeniería, se ha experimentado un modelo que permite monitorear el impacto que tienen las acciones y los recursos empleados, indicando cuáles procesos requieren atención prioritaria. La metodología de análisis se basa principalmente en la modelación de ecuaciones estructurales, con los objetivos de analizar si el modelo se ajusta a los datos colectados y cuáles factores están correctamente representados. Los resultados indican qué factores están pobremente medidos y las interrelaciones existentes.

El turismo de cruceros y la transformación del paisaje: Majahual, México

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Ana Pricila Sosa Ferreira

2016-01-01

Full Text Available El presente estudio analiza la transformación del paisaje en destinos de cruceros, específicamente el caso de Majahual en Quintana Roo, Mexico, como un destino planificado y desarrollado en torno a la actividad de cruceros. El estudio se realizó a través del análisis deductivo y transversal, donde se revisa el contexto de la expansión de la actividad de cruceros y algunas de sus implicaciones; también se aborda el concepto de paisaje y su relación con la construcción social del espacio y se discute éstos para el caso de Mahahual, algunas de sus características y su naturaleza con respecto a espacio turístico y paisajístico, y finalmente se concluye sobre la construcción social no de uno, sino de varios paisajes.

The blurred line between photic and aphotic environments: a large Mexican cave with almost no dark zone

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Luis M. Mejía-Ortíz

2018-01-01

Full Text Available Sistema Muévelo Rico is a 1.2 km long cave in Quintana Roo, less than 2 km from the Caribbean Sea. We measured illuminance to a level of 0.1 lux, organic matter (weight loss on ignition, temperature, and relative humidity. The last two were measured at hourly intervals for nearly one year. Approximately one-third of the cave has illuminance values greater than 0.01 lux, and most of the rest of the cave has light as well. Temperature and relative humidity were relatively constant, but they showed a daily cycle at all stations, albeit with different strengths. Organic matter averaged 8%, intermediate in value between surface and aphotic zones. Both eyeless species and eyed predators occurred throughout the cave. Their occurrence can best be explained by their foraging for organic matter and incurring an increased risk of predation.

Reconstructing water level in Hoyo Negro, Quintana Roo, Mexico, implications for early Paleoamerican and faunal access

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Collins, S. V.; Reinhardt, E. G.; Rissolo, D.; Chatters, J. C.; Nava Blank, A.; Luna Erreguerena, P.

2015-09-01

The skeletal remains of a Paleoamerican (Naia; HN5/48) and extinct megafauna were found at -40 to -43 mbsl in a submerged dissolution chamber named Hoyo Negro (HN) in the Sac Actun Cave System, Yucatan Peninsula, Mexico. The human remains were dated to between 12 and 13 Ka, making these remains the oldest securely dated in the Yucatan. Twelve sediment cores were used to reconstruct the Holocene flooding history of the now phreatic cave passages and cenotes (Ich Balam, Oasis) that connect to HN. Four facies were found: 1. bat guano and Seed (SF), 2. lime Mud (MF), 3. Calcite Rafts (CRF) and 4. Organic Matter/Calcite Rafts (OM/CRF) which were defined by their lithologic characteristics and ostracod, foraminifera and testate amoebae content. Basal radiocarbon ages (AMS) of aquatic sediments (SF) combined with cave bottom and ceiling height profiles determined the history of flooding in HN and when access was restricted for human and animal entry. Our results show that the bottom of HN was flooded at least by 9850 cal yr BP but likely earlier. We also found, that the pit became inaccessible for human and animal entry at ≈8100 cal yr BP, when water reaching the cave ceiling effectively prevented entry. Water level continued to rise between ≈6000 and 8100 cal yr BP, filling the cave passages and entry points to HN (Cenotes Ich Balam and Oasis). Analysis of cave facies revealed that both Holocene sea-level rise and cave ceiling height determined the configuration of airways and the deposition of floating and bat derived OM (guano and seeds). Calcite rafts, which form on the water surface, are also dependent on the presence of airways but can also form in isolated air domes in the cave ceiling that affect their loci of deposition on the cave bottom. These results indicated that aquatic cave sedimentation is transient in time and space, necessitating extraction of multiple cores to determine a limit after which flooding occurred.

Hábitos alimentarios de las mojarras (Perciformes: Cichlidae de la laguna Caobas, Quintana Roo, México

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María Teresa Valtierra-Vega

2000-06-01

Full Text Available Se estudió la alimentación de siete especies de cíclidos (Archocentrus octofasciatus, A. spilurus, "Cichlasoma" robertsoni , "C." synspilum, "C." urophthalmus , Petenia splendida, Thorichthys meeki en la laguna Caobas, sur de la península de Yucatán. Los muestreos se llevaron a cabo durante las estaciones seca y lluviosa de 1995. Los ejemplares medían menos de 41 mm LP. Se evaluó la frecuencia de aparición y la abundancia de las presas. Los ítemes alimentarios predominantes fueron los quironómidos, ácaros, copépodos, cladóceros y ostrácodos. La mayoría de las mojarras se mostraron zooplanctófagas, con la excepción parcial de P. splendida (piscívora, "C." synspilum y A. spilurus (herbívoras. A. octofasciatus tuvo el más amplio espectro alimentario y se consideró omnívoro. Thorichthys meeki mostró cambios cuantitativos en la dieta por hora del día, talla del pez y estación del año, no así por sexo.Feeding habits of seven cichlid species (Archocentrus octofasciatus, A. spilurus, "Cichlasoma" robertsoni, "C." synspilum, "C." urophthalmus, Petenia splendida, Thorichthys meeki in Lake Caobas, southern Yucatan Peninsula, were studied. Samples were taken with enclosure and cast nets during the dry and rainy seasons of 1995 (day and night. The environment was characterized by measuring temperature, conductivity and pH. All individuals were below 41 mm SL (N=281. Frequency of occurrence and prey abundance were analyzed. Main prey items were chironomids, mites, copepods, cladocerans, and ostracods. The cichlids fed mainly on zooplankton, with the partial exceptions of P. splendida (piscivore, "C." synspilum and A. spilurus (herbivores. A cluster analysis showed that the most similar trophic spectra were those of T. meeki, "C." robertsoni and "C." salvini, which were also the least diverse. "C." synspilum and A. spilurus had an intermediate distance between their diets and those of other species. The species with the most distinctive feeding composition were P. splendida (with the most diverse and equitable diet and the omnivore A. octofasciatus (whose diet was the richest one. T. meeki showed quantitative diel, ontogenetic, and seasonal diet changes, but none between sexes. "C." robertsoni, "C." salvini and "C." synspilum differ in food habits in Caobas and in other localities, a fact that underscores the trophic adaptability of cichlids. Trophic overlap between cichlids in Caobas could imply absence of competition, perhaps because resources are abundant in the ecosystem.

Paleoenvironmental and Paleoecological Reconstruction of the Ancient Maya Port Site of Vista Alegre, Quintana Roo, Mexico

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Rissolo, D.; Jaijel, R.; Glover, J. B.; Goodman, B.; Beddows, P. A.; Carter, A.; Smith, D.

2013-12-01

Ancient Maya ports along the largely unstudied northeast coast of the Yucatan Peninsula once supported a network of trade routes linking people, goods, and ideas from across Mesoamerica. The Costa Escondida Project has focused on the interrelationships between the ancient Maya and their dynamic coastal environment along the shores of the Laguna Holbox. Central to our interdisciplinary efforts is a paleoenvironmental and paleoecological reconstruction of the key port of Vista Alegre - a low-lying island surrounded by a complex mosaic of costal ecosystems, sedimentological facies, and hydrological conditions. Geoarchaeological field methods, such as sediment coring, have made possible multiproxy analyses that enable us to better understand sea level fluctuations and the morphology of the shoreline and harboring locations over time, as well as changes in ecosystem biodiversity, which would have presented the maritime Maya with unique challenges and opportunities.

Allelochemical effects of volatile compounds and organic extracts from Muscodor yucatanensis, a tropical endophytic fungus from Bursera simaruba.

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Macías-Rubalcava, Martha L; Hernández-Bautista, Blanca E; Oropeza, Fabiola; Duarte, Georgina; González, María C; Glenn, Anthony E; Hanlin, Richard T; Anaya, Ana Luisa

2010-10-01

Muscodor yucatanensis, an endophytic fungus, was isolated from the leaves of Bursera simaruba (Burseraceae) in a dry, semideciduous tropical forest in the Ecological Reserve El Eden, Quintana Roo, Mexico. We tested the mixture of volatile organic compounds (VOCs) produced by M. yucatanensis for allelochemical effects against other endophytic fungi, phytopathogenic fungi and fungoids, and plants. VOCs were lethal to Guignardia mangifera, Colletotrichum sp., Phomopsis sp., Alternaria solani, Rhizoctonia sp., Phytophthora capsici, and P. parasitica, but had no effect on Fusarium oxysporum, Xylaria sp., the endophytic isolate 120, or M. yucatanensis. VOCs inhibited root elongation in amaranth, tomato, and barnyard grass, particularly those produced during the first 15 days of fungal growth. VOCs were identified by gas chromatography/mass spectrometry and included compounds not previously reported from other Muscodor species and the previously reported compounds octane, 2-methyl butyl acetate, 2-pentyl furan, caryophyllene, and aromadendrene. We also evaluated organic extracts from the culture medium and mycelium of M. yucatanensis on the same endophytes, phytopathogens, and plants. In general, extracts inhibited plants more than endophytic or phytopathogens fungi. G. mangifera was the only organism that was significantly stimulated by both extracts regardless of concentration. Compounds in both organic extracts were identified by gas chromatography/mass spectrometry. We discuss the possible allelopathic role that metabolites of M. yucatanensis play in its ecological interactions with its host plant and other organisms.

Antibodies to West Nile virus in asymptomatic mammals, birds, and reptiles in the Yucatan Peninsula of Mexico.

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Farfán-Ale, José A; Blitvich, Bradley J; Marlenee, Nicole L; Loroño-Pino, María A; Puerto-Manzano, Fernando; García-Rejón, Julián E; Rosado-Paredes, Elsy P; Flores-Flores, Luis F; Ortega-Salazar, Andres; Chávez-Medina, Jaidy; Cremieux-Grimaldi, Juan C; Correa-Morales, Favián; Hernández-Gaona, Gerson; Méndez-Galván, Jorge F; Beaty, Barry J

2006-05-01

Surveillance for evidence of West Nile virus (WNV) infection in taxonomically diverse vertebrates was conducted in the Yucatan Peninsula of Mexico in 2003 and 2004. Sera from 144 horses on Cozumel Island, Quintana Roo State, 415 vertebrates (257 birds, 52 mammals, and 106 reptiles) belonging to 61 species from the Merida Zoo, Yucatan State, and 7 farmed crocodiles in Ciudad del Carmen, Campeche State were assayed for antibodies to flaviviruses. Ninety (62%) horses on Cozumel Island had epitope-blocking enzyme-linked immunosorbent assay (ELISA) antibodies to flaviviruses, of which 75 (52%) were seropositive for WNV by plaque reduction neutralization test (PRNT). Blocking ELISA antibodies to flaviviruses also were detected in 13 (3%) animals in the Merida Zoo, including 7 birds and 2 mammals (a jaguar and coyote) seropositive for WNV by PRNT. Six (86%) crocodiles in Campeche State had PRNT-confirmed WNV infections. All animals were healthy at the time of serum collections and none had a history of WNV-like illness.

Occurrence of Amblyomma dissimile on wild crocodylians in southern Mexico.

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Charruau, Pierre; Pérez-Flores, Jonathan; Cedeño-Vázquez, J Rogelio; Gonzalez-Solis, David; González-Desales, Giovany A; Monroy-Vilchis, Octavio; Desales-Lara, Marco A

2016-09-26

Ticks are common ectoparasites of amphibians and reptiles but very few reports of such parasites on crocodylians exist worldwide. Herein, we report the first detailed observations of Amblyomma dissimile Koch, 1844 on the 3 crocodylian species present in Mexico, with the first report of tick parasitism on Crocodylus acutus and the second on Caiman crocodilus chiapasius. This is also the first report of A. dissimile in the state of Quintana Roo. Proportions of infested individuals found in this study ranged from 0.51 to 1.96%, suggesting that tick parasitism in crocodylians is likely opportunistic and occurs when individuals leave the water for terrestrial activities. Tick parasitism does not represent a major threat to crocodylians. The increasing habitat destruction/fragmentation and cattle expansion in southeastern Mexico, however, could increase tick populations and trigger tick parasitism and tick-borne diseases in herpetofauna and other vertebrates, including humans. Thus, studies are needed to better understand these relationships.

A third case of amelia in Morelet's crocodile from the Yucatan Peninsula.

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Charruau, Pierre; Niño-Torres, Carlos A

2014-07-03

Congenital defects in crocodilians have received little interest. In the context of global change and increasing threats to biodiversity, data on birth defects occurring in wildlife could be of importance for estimating the health of species populations and their ecosystems. Herein, we report the first case of amelia (i.e. absence of limbs) in Morelet's crocodiles Crocodylus moreletii from Mexico and the third on the southern Yucatan Peninsula. The crocodile in question was a juvenile (41 cm total length) captured in July 2012 in the Río Hondo, the river that forms the border between Mexico and Belize south of the state of Quintana Roo. The prevalence of this malformation in the C. moreletii population of Río Hondo (0.35%) is similar to that reported in 2 previous cases in Belize. Several causes of birth defects in crocodilians have previously been cited in the literature. Although we do not have relevant information to elucidate this case, we discuss some plausible explanations for this birth defect.

[Benthic flora and reproduction of Batophora spp. algae (Chlorophyta: Dasycladaceae) in a polluted coastal lagoon (Chetumal Bay, Mexico)].

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Quan-Young, L I; Jiménez-Flores, S G; Espinoza-Avalos, J

2006-06-01

The benthic flora, and the vegetative and reproductive characters of the algae Batophora oerstedii and B. occidentalis (Chlorophyta) were recorded from five sites of Chetumal Bay, Quintana Roo, Mexico. A sewage gradient has been reported along those sites. Plants were sampled in May and October 1999, which corresponded to dry and rainy seasons, respectively. Forty taxa were found, 11 are new records for the Chetumal Bay, and 6 are new records for the Mexican Caribbean. Enteromorpha species were present in sites known as rich in organic matter (both from anthropogenic and natural sources). Batophora spp. is the dominant algae in all Chetumal Bay. However, it was absent next to sewage outfalls. The morphological characters of B. oerstedii and B. occidentalis did not change significantly along the sites reported as polluted. The length and width of gametophores, as well as the diameter of the gametangia were clearly different for both species. Different reproductive strategies may help B. oerstedii and B. occidentalis to closely coexist in the Chetumal Bay.

Incidence of variables in the Transfer of Tacit Knowledge of Marketing in the hotel sector of Playa del Carmen city, Mexico.

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José Luis Zapata

2017-01-01

Full Text Available Esta investigación permitió validar un modelo de influencia de la intención de aprendizaje de market‑ ing, motivación personal y capacidad de absorción de conocimiento de marketing en la adquisición de conocimien‑ to tácito de marketing y esto a su vez en la transferencia de conocimiento tácito de marketing entre los empleados de pequeñas y medianas empresas hoteleras en la ciudad de Playa del Carmen, Quintana Roo, México. A través de una investigación cuantitativa y transversal, se integraron 229 empleados del sector hotelero. Los resultados mostraron que la motivación personal y la intención de aprender marketing intervienen positivamente en la adquisición de conocimiento tácito de marketing y, con influencia de la capacidad de absorción del conocimiento de marketing, impactan directamente la transferencia de conocimiento tácito de marketing.

Factores familiares asociados a codependencia en enfermeras de un hospital de Cancún, Quintana Roo, México

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Margarita Ramírez-Amaro

2014-05-01

Conclusiones: Se encontró que la disfunción familiar y la familia monoparental fueron los factores familiares que más se asociaron a la presencia de codependencia en las enfermeras de un hospital; por lo tanto, al poder identificar estos factores, nosotros como médicos familiares podremos mejorar su dinámica y funcionalidad a través de nuestro estudio familiar, facilitando una comunicación eficaz con el personal de enfermería y sus familias.

El desarrollo turístico en Cancún, Quintana Roo y sus consecuencias sobre la cubierta vegetal

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Graciela Pérez Villegas

2000-08-01

Full Text Available This paper deals with the expansion of tourism complex in Cancún, Mexico, from its creation as a beach resort in the l970´s to the present. The quantitative measurement of the urban growth over natural scenarios is the major contribution of this study, particularly with reference to the disturbance of natural vegetation due to the construction of physical infrastructure for both housing and tourist activities. Moreover, it emphasizes the risk of affecting natural ecosystems surrounding Cancún as a consequence of an excessive tourism development.

Nematofauna asociada a la zona urbana de la bahía de Chetumal, Quintana Roo, México

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Alberto de Jesús Navarrete

1999-12-01

Full Text Available En junio y diciembre de 1995 se recolectaron sedimentos en 15 estaciones distribuidas en cinco transectos en la bahía de Chetumal. Los sedimentos fueron, en su mayoría arena fina y mediana, con un máximo de 15.62% de materia orgánica. En junio se recolectaron 2 239 organismos pertenecientes a 20 familias y 37 géneros, en diciembre se obtuvieron 1 426 nematodos que se ubicaron en 21 familias y 35 géneros. Neotonchoides, Desmodora, Bathylaimus, Pseudochromadora, Desmolaimus, Chromadorina y Steineria fueron los generos más abundantes. El transecto 3 en ambas temporadas fue el de mayor abundancia y riqueza, con 957 y 744 individuos y 28 y 25 géneros respectivamente. La menor abundancia ocurrió en el transecto 1 con 48 individuos y 6 géneros. La diversidad osciló entre 0.53 y 2.53 beles/ind. En general existe una homogeneidad en la composición de géneros en la bahía, aunque es notorio que muchos géneros considerados estrictamente marinos estén representados en aguas salobres, lo que muestra su capacidad de adaptación.Sediments were collected at fifteen stations in five transects at Chetumal Bay (June and December 1995. Sediments were medium and fine sands with 15.62% organic matter. In June, 2 239 individuals represented 20 families and 37 genera; in December, 1 426 individuals represented 21 families and 35 genera. Neotonchoides, Desmodora, Bathylaimus, Pseudochromadora, Desmolaimus, Chromadorina and Steineria were the most abundant. In both months the same transect had the highest abundance and richness (957 and 744 individuals, 28 and 25 genera, respectively. The lowest abundance in a transect was 48 individuals and six genera. Diversity fluctuated among 0.53 and 2.53 beles/ind. In general, the genus composition in Chetumal bay is homogeneous. The noteworthy occurrence of marine genera in this brackish environment shows their adaptability.

[Temporal and spatial distribution of the crab Callinectes sapidus (Decapoda: Portunidae) in Chetumal Bay, Quintana Roo, Mexico].

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Ortiz-León, Héctor J; Jesús-Navarrete, Alberto de; Cordero, Eloy Sosa

2007-03-01

In order to determine temporal and spatial distribution patterns of Callinectes sapidus, samplings were carried out during the cold-front (January-February), dry (May-June) and rainy (August-September, 2002) climatic seasons, in 30 sampling stations of Chetumal Bay, grouped in sectors A (14 stations), B (eight stations) and C (eight stations). In each sampling station crabs were collected from two transects parallel to the coast, each with three traps, separated by 30 m. Sediments were calcareous coarse and medium sand, white or lightly gray. A total of 1 031 specimens were collected. CPEU (Capture Per Effort Unit) differed spatially and temporally. Highest CPEU was found in sector C with 1.3 ind.trap(-1), and in the rainy season with 1.1 ind.trap(-1). Population was predominantly composed of male individuals. The male:female ratio was 15:1. Males and adults (group II) CPEU was significant different between sectors and climatic seasons. Both males and adults (group II) had a greater CPEU in sector C (1.2 ind.trap-) and in the rainy season (1.1 ind.trap(-1)). Abundance of female and juvenile individuals (group I) was low during the sampling period whereas group 0 juvenile individuals were not found. A greater relative frequency between sectors and climatic seasons were observed in 130-139 mm and 140-149 mm size interval (CW). C. sapidus occurred on sandy sediments in Chetumal Bay. Pearson product moment correlations exhibited significant relationships between CPEU and temperature, salinity and dissolved oxygen. In Chetumal Bay, the spatial and temporal distribution of C. sapidus can be related to salinity, temperature, habitat quality, food availability, recruitment and reproduction events of individuals.

Hurricane Ingrid and Tropical Storm Hanna's effects on the salinity of the coastal aquifer, Quintana Roo, Mexico

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Kovacs, Shawn E.; Reinhardt, Eduard G.; Stastna, Marek; Coutino, Aaron; Werner, Christopher; Collins, Shawn V.; Devos, Fred; Le Maillot, Christophe

2017-08-01

There is a lack of information on aquifer dynamics in anchialine systems, especially in the Yucatán Peninsula of Mexico. Most of our knowledge is based on ;spot; measurements of the aquifer with no long-term temporal monitoring. In this study spanning four years (2012-2016), sensors (water depth and conductivity (salinity)) were deployed and positioned (-9 and -10 m) in the meteoric Water Mass (WM) close to the transition with the marine WM (halocline) in 2 monitoring sites within the Yax Chen cave system to investigate precipitation effects on the salinity of the coastal aquifer. The results show variation in salinity (95 mm) such as Hurricane Ingrid (2013) and Tropical Storm Hanna (2014) shows meteoric water mass salinity rapidly increasing (approx. 6.39 to >8.6 ppt), but these perturbations have a shorter duration (weeks and days). Wavelet analysis of the salinity record indicates seasonal mixing effects in agreement with the wet and dry periods, but also seasonal effects of tidal mixing (meteoric and marine water masses) occurring on shorter time scales (diurnal and semi-diurnal). These results demonstrate that the salinity of the freshwater lens is influenced by precipitation and turbulent mixing with the marine WM. The salinity response is scaled with precipitation; larger more intense rainfall events (>95 mm) create a larger response in terms of the magnitude and duration of the salinity perturbation (>1 ppt). The balance of precipitation and its intensity controls the temporal and spatial patterning of meteoric WM salinity.

Distribución espacio-temporal de las actividades extractivas en los bosques del ejido Caoba, Quintana Roo

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Antalia González Abraham

2012-02-01

Full Text Available Este trabajo tiene como objetivo analizar la distribución espacio-temporal de las actividades extractivas del bosque en un ejido del sur de la península de Yucatán, con el fin de evaluar su impacto potencial sobre la conservación de los recursos naturales. Se eligieron como actividades extractivas la recolecta de leña, la extracción de chicle, la extracción de madera y la cacería. Además, se incluyó a la milpa debido a que su práctica está íntimamente relacionada con la dinámica del bosque y con otras de las actividades evaluadas. Se entrevistaron a 32 ejidatarios con un cuestionario estructurado para obtener información referente a las actividades extractivas en el ejido. Posteriormente, con ayuda de un gps, se ubicaron espacialmente los sitios donde se desarrollan. Se calculó un índice de perturbación para cada actividad para elaborar un mapa de sensibilidad basado en la suma espacial de los índices de perturbación. La actividad con mayor índice de perturbación fue la milpa, debido a su desarrollo a lo largo de todo el año y frecuencia de visita de los campesinos a sus parcelas. Además, coincide espacialmente con la recolección de leña y en muchos casos con la cacería. Por el contrario la extracción de chicle fue la actividad con el menor índice de perturbación, puesto que se desarrolla una sola vez al año y durante la época menos crítica para la fauna en la región.

Remnant Trees in Enrichment Planted Gaps in Quintana Roo, Mexico: Reasons for Retention and Effects on Seedlings

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Angélica Navarro-Martínez

2017-07-01

Full Text Available Natural forest management in the tropics is often impeded by scarcity of advanced regeneration of commercial species. To supplement natural regeneration in a forest managed by a community in the Selva Maya of Mexico, nursery-grown Swietenia macrophylla seedlings were planted in multiple-tree felling gaps, known as bosquetes. Remnant trees are often left standing in gaps for cultural and economic reasons or due to their official protected status. We focus on these purposefully retained trees and their impacts on planted seedlings. Sampled bosquetes were 400–1800 m2, of which remnant trees covered a mean of 29%. Seedling height growth rates over the first 18 months after out-planting more than doubled with increased canopy openness from 0.09 m year−1 under medium cover to 0.22 m year−1 in full sun. Liana infestations and shoot tip damage were most frequent on seedlings in the open, but, contrary to our expectations, height growth rates were 0.14 m year−1 faster for liana-infested seedlings than non-infested and did not differ between damaged and undamaged seedlings. Apparently the more rapid height growth of well-illuminated seedlings more than compensated for the effects of lianas or shoot tip damage. Despite the abundance of remnant trees and their negative effects on seedling growth, enrichment planting in bosquetes has potential for community-based natural forest management in the tropics in supplementing natural regeneration of commercial species. One obvious recommendation is to leave fewer remnant trees, especially those of commercial species that are non-merchantable due to stem defects and trees retained for no apparent reason, which together constituted half of the remnant crown cover in the sampled bosquetes. Finally, given the rapid growth of lianas and understory palms in large canopy gaps, at least the most vigorous of the planted seedlings should be tended for at least two years.

Proyecto Costa Escondida: Interdisciplinary Research at the Ancient Maya Port Site of Vista Alegre, Quintana Roo, Mexico

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Glover, J.; Rissolo, D.; Beddows, P. A.; Goodman, B.; Smith, D.

2013-05-01

At the northeast tip of the Yucatan Peninsula - where the Caribbean meets the Gulf - lies the ancient Maya port site of Vista Alegre. The inhabitants of this site, much like the people living nearby today, were forced to contend with the challenging coastal environment of Laguna Holbox. The sediment-rich, low gradient of the north coast presents a contrasting landscape compared to the Caribbean coast, where water resources are of much larger magnitude and evident in the extensive systems of cenotes (sinkholes) and underground rivers that supported pre-Columbian sites along this eastern rocky sediment-poor coastline. For past inhabitants the north coast was a mosaic of low-lying, non-arable zones where access to potable water was a challenge for inhabitants well into the 20th century. By bringing together scholars from the fields of archaeology, coastal ecology, geoarchaeology, and hydrogeology, the Proyecto Costa Escondida is focusing on the dynamic relationship between the Maya and their coastal landscape over the past 3000 years. To date we have collected 12 manual push-cores from the shallow waters surrounding Vista Alegre, which have been analyzed at 1 cm resolution using standard methods for Loss on Ignition (LOI), δ18Ocarb and δ13Ccarb of bulk carbonate, granulometry, micropalentology, and AMS radiocarbon dating. In addition to have baseline comparative data, we have conducted near-shore and terrestrial coastal ecological surveys along with the mapping of coastal water salinity and temperatures in the dry and wet seasons. Overall, the chemical proxies, lithology, and paleosalinity model reconstructed to date reveal four onlapping parasequences representing an overall transgression of the coastline with strong seasonality of water chemistry that has been changing under the control of rising sea levels over the past 3000 years. The sedimentation rate and timing of the transition to marine is in reasonable agreement with local sea level curves meaning that the shoreline and possible terrestrial features during some of the occupational phases of Vista Alegre are most likely drowned today. The isotope record indicates large changes in the proportion of freshwater and high evaporation rates have occurred throughout the site's history. Superposition of these seasonal cycles on the long-term rise in sea level means that water may have been much more readily accessible to the Maya that inhabited this site than it is today. By correlating the environmental data with the archaeological evidence from Vista Alegre, our research sheds light on the varying adaptive strategies employed by these coastal inhabitants. By carefully correlating changing paleoenvironmental data with broader sociopolitical changes, we are in a strong position to address the challenges faced, and opportunities pursued, by these coastal peoples in a holistic manner.

Groundwater geochemistry of the Yucatan Peninsula, Mexico: Constraints on stratigraphy and hydrogeology

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Perry, Eugene; Paytan, Adina; Pedersen, Bianca; Velazquez-Oliman, Guadalupe

2009-03-01

SummaryWe report 87Sr/ 86Sr and ion concentrations of sulfate, chloride, and strontium in the groundwater of the northern and central Yucatan Peninsula, Mexico. Correlation between these data indicates that ejecta from the 65.95 m.y. old Chicxulub impact crater have an important effect on hydrogeology, geomorphology, and soil development of the region. Ejecta are present at relatively shallow subsurface depths in north-central Yucatan and at the surface along the Rio Hondo escarpment in southeast Quintana Roo, where they are referred to as the Albion Formation. Anhydrite/gypsum (and by inference celestite) are common in impact ejecta clasts and in beds and cements of overlying Paleocene and Lower Eocene rocks cored around the margin of the crater. The sulfate-rich minerals that are found in rocks immediately overlying the impact ejecta blanket, may either be partially mobilized from the ejecta layer itself or may have been deposited after the K/T impact event in an extensive pre-Oligocene shallow sea. These deposits form a distinctive sedimentary package that can be easily traced by the Eocene-Cretaceous 87Sr/ 86Sr signal. A distinct Sr isotopic signature and high SO 4/Cl ratios are observed in groundwater of northwestern and north-central Yucatan that interacts with these rocks. Moreover, the distribution of the gypsum-rich stratigraphic unit provides a solution-enhanced subsurface drainage pathway for a broad region characterized by dissolution features (poljes) extending from Chetumal, Quintana Roo to Campeche, Campeche. The presence of gypsum quarries in the area is also consistent with a sulfate-rich stratigraphic "package" that includes ejecta. The distinctive chemistry of groundwater that has been in contact with evaporite/ejecta can be used to trace flow directions and confirms a groundwater divide in the northern Peninsula. Information about groundwater flow directions and about deep subsurface zones of high permeability is useful for groundwater and

Estudio anual del zooplancton: composición, abundancia, biomasa e hidrología del norte de Quintana Roo, mar Caribe de México Annual study of zooplankton: composition, abundance, biomass and hydrology from the north of Quintana Roo, Mexican Caribbean Sea

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José N Álvarez-Cadena

2007-12-01

Full Text Available Se llevaron a cabo muestreos de zooplancton en la zona lagunar y costera del Caribe mexicano, desde Puerto Morelos hasta Cancún. Las recolectas se llevaron a cabo de enero a diciembre de 2004 en 12 localidades. Se identificaron 41 grupos del zooplancton donde los copépodos fueron los más abundantes (61% seguidos de las larvas de equinodermos (17% y decápodos (5%. El copépodo Acartia tonsa fue la especie más abundante de este grupo en el Sistema Lagunar Nichupté (SLN. En la zona marina adyacente los copépodos estuvieron representados en orden de importancia por Acartia spinata, Pseudocalanus sp. y Calanopia americana. En todas las estaciones se capturaron equinodermos del tipo equinopluteus-ofiopluteus, pero con mayor abundancia en el SLN. El quetognato Ferosagitta hispida fue la única especie que se encontró en el SLN, donde fue más abundante. Los decápodos estuvieron representados principalmente por larvas zoeas; las larvas de peces por 54 familias, de las cuales los góbidos de los géneros Ctenogobius sp., Gobionellus sp. y Gobiosoma sp. fueron los mejor representados, particularmente para el SLN. La biomasa fue mayor en el SLN.Zooplankton sampling was carried out in the northern coast of the Mexican Caribbean Sea, from Puerto Morelos to Cancun. Captures were made with a conic net 0.4m diameter, 1.40m length and 0.330 mm mesh from January to December 2004 at twelve locations. A total of 41 zooplankton groups were identified. Copepods were the most abundant taxa making up 61%, followed by echinoderms (17% and decapods (5%. Acartia tonsa at the Nichupte Lagoon System (SLN over numbered the copepod fauna and occasionally the whole zooplankton population. Along the coast Acartia spinata, Pseudocalanus sp, and Calanopia americana were the most important copepods. Echinoderms larvae such as echinopluteus-ophiopluteus were present at all sampled stations but were more abundant at the NLS. For chaetognaths, Ferosagitta hispida dominated, the species was the most abundant and in fact the only species found within the NLS. Decapod larvae were mainly represented by zoea larvae (brachiura. Fish larvae were made up by 54 families, from those, Gobids of the genera Ctenogobius sp., Gobionellus sp. and Gobiosoma sp. were the most abundant, particularly for SLN. Biomass was higher at stations located within the SLN.

[Breastfeeding, complementary feeding and risk of childhood obesity].

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Sandoval Jurado, Luis; Jiménez Báez, María Valeria; Olivares Juárez, Sibli; de la Cruz Olvera, Tomas

2016-11-01

To evaluate the pattern of breastfeeding and weaning as a risk of obesity in pre-school children from a Primary Care Unit. Cross-sectional analytical study LOCATION: Cancun, Quintana Roo (Mexico). Children from 2-4 years of age from a Primary Care Unit. Duration of total and exclusive breastfeeding, age and food utilized for complementary feeding reported by the mother or career of the child and nutritional status assessment evaluated by body mass index (BMI) ≥ 95 percentile. Determination of prevalence ratio (PR), odds ratio (OR), chi squared (x2), and binary logistic regression. The study included 116 children (55.2% girls) with a mean age of 3.2 years, with obesity present in 62.1%, Exclusive breastfeeding in 72.4% with mean duration of 2.3 months, and age at introducing solids foods was 5.0 months. There was a difference for breastfeeding and complementary feeding by gender sex (P<.05). A PR=3.9 (95% CI: 1.49-6.34) was calculated for exclusive breastfeeding and risk of obesity. The model showed no association between these variables and obesity in children CONCLUSIONS: Exclusive breastfeeding of less than three months is associated with almost 4 more times in obese children. There was a difference in age of complementary feeding, duration of breastfeeding, and formula milk consumption time for obese and non-obese children. Copyright © 2015 Elsevier España, S.L.U. All rights reserved.

Genetic structure and genetic diversity of Swietenia macrophylla in areas subjected to selective logging in Quintana Roo, Mexico

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Alcalá, Raúl Ernesto; Cruz, Silvia De la; Gutiérrez-Granados, Gabriel

2015-01-01

The hypothesis that selective logging has a negative effect by altering the genetic parameters of tropical tree species was evaluated. The genetic diversity and genetic structure between adult trees (N = 47) and saplings (N = 50) of Swietenia macrophylla were contrasted within an area subjected to selective logging in the Mayan zone. Although differences in the number of alleles and in their frequencies were detected between both groups, the observed and expected heterozygosity and the coeffi...

Regenerating mahogany (Swietenia macrophylla) from seed in Quintana Roo, Mexico: the effects of sowing method and clearing treatment.

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Patricia Negreros-Castilloa; Laura K. Snookb; Carl W. Mize

2003-01-01

Honduras or bigleaf mahogany (Swietenia macrophylla King) is the most commercially important timber species in the Neotropics, but it often does not regenerate successfully after harvesting. Effective methods are needed to sustain or increase mahogany yields by increasing regeneration. This study evaluates the effects of three treatments (slash, fell and burn; slash,...

PLANIFICACIÓN TURÍSTICA Y HOSPITALIDAD: EL CASO DE CANCÚN, MEXICO

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Priscilla Gonzalez

2011-05-01

Full Text Available This article is a reflection about the outcomes of implementation and development of the tourism project of the town named Cancun, in the state of Quintana Roo, México, from the urban hospitality point of view. The goal is to present an overview about the results of the implementation and development of the tourism in this town and the impact on the daily life and way of living of the local population, and also, in the residents relationship with the town. The research, which is a qualitative analysis, was based on direct observations, in consequence of the work experience of the researcher in the local hospitality industry and also as a local resident in Cancun for five years; based on bibliography research and academic papers as well as government sources, especially the Plan Maestro 2020 that was essential to the analysis of the testimonies heard during field research. The results of the research allows to evaluate the relationship between fast and uncontrolled development  of the destination and its consequences.

EL FOGÓN ABIERTO DE TRES PIEDRAS EN LA PENÍNSULA DE YUCATÁN: TRADICIÓN Y TRANSFERENCIA TECNOLÓGICA

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Citlalli Cantú Gutiérrez

2012-06-01

In Mexico and particularly on the Yucatan peninsula, the use of the three-stone open fire cook stove and fire wood fuel is a phenomenon of great importance due to the number of people using it, its historical-cultural background and its meaning within the complex of traditional technologies. Its current existence represents a process of autonomy of the indigenous, peasant and poor populations with respect to the hegemonic networks of conventional sources of energy. Based on observations of 4000 households in 39 locations in Yucatan and Quintana Roo, Mexico, this article describes the characteristics of the open fire cook stove as well as the preferred types of firewood. It analyzes the transfer of technology and describes the process of delivery of open fire cook stoves by the federal government in Yucatan, interpreting it as a carbon subsidy policy for both local capitalist industry and developed countries, and as a way of neutralizing traditional autonomy and the efforts of organized civil society to promote participatory and community development.

[Trend analysis of acquired syphilis in Mexico from 2003 to 2013].

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Herrera-Ortiz, Antonia; Uribe-Salas, Felipe J; Olamendi-Portugal, Ma Leonidez; García-Cisneros, Santa; Conde-Glez, Carlos Jesús; Sánchez-Alemán, Miguel A

2015-01-01

To identify the population group in which syphilis increase was concentrated. The information was collected from the Mexico health statistical yearbooks. The information disaggregated by sex, age group and state during the period 2003 to 2013 was used to form different databases. Linear regression analysis with confidence interval at 95% was used to evaluate changes over time in different population groups. An increase of 0.67 cases per 100,000 population (95%CI 0.30-1.04) in men was detected from 2010. The increase was concentrated in each group of 20-24 and 25-44. The highest incidence of acquired syphilis was reported in the last two years: 2012 and 2013. The last year reported a 1.85 times higher incidence than reported in 2003. Aguascalientes, Distrito Federal, Durango, Mexico, Oaxaca, Puebla, Quintana Roo, Yucatan and Zacatecas reported that syphilis increased during the study period. Acquired syphilis may be reemerging in our country among young men; this increase is not uniform across the country, it is necessary to focus intervention measures for this sexually transmitted infection.

Porosity Development in a Coastal Setting: A Reactive Transport Model to Assess the Influence of Heterogeneity of Hydrological, Geochemical and Lithological Conditions

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Maqueda, A.; Renard, P.; Cornaton, F. J.

2014-12-01

Coastal karst networks are formed by mineral dissolution, mainly calcite, in the freshwater-saltwater mixing zone. The problem has been approached first by studying the kinetics of calcite dissolution and then coupling ion-pairing software with flow and mass transport models. Porosity development models require high computational power. A workaround to reduce computational complexity is to assume the calcite dissolution reaction is relatively fast, thus equilibrium chemistry can be used to model it (Sanford & Konikow, 1989). Later developments allowed the full coupling of kinetics and transport in a model. However kinetics effects of calcite dissolution were found negligible under the single set of assumed hydrological and geochemical boundary conditions. A model is implemented with the coupling of FeFlow software as the flow & transport module and PHREEQC4FEFLOW (Wissmeier, 2013) ion-pairing module. The model is used to assess the influence of heterogeneities in hydrological, geochemical and lithological boundary conditions on porosity evolution. The hydrologic conditions present in the karst aquifer of Quintana Roo coast in Mexico are used as a guide for generating inputs for simulations.

Low pH Springs - A Natural Laboratory for Ocean Acidification

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Derse, E.; Rebolledo-Vieyra, M.; Potts, D. C.; Paytan, A.

2009-12-01

Recent increases in atmospheric carbon dioxide of 40% above pre-industrial levels has resulted in rising aqueous CO2 concentrations that lower the pH of the oceans. Currently, the surface ocean has an average pH between 8.1 and 8.2: it is estimated that over the next 100 years this value will decrease by ~0.4 pH units. Previous studies have highlighted the negative impacts that changes in pH (and the resulting CaCO3 saturation state) have on marine organisms; however, to date, very little is known about the long-term impacts of ocean acidification on ecosystems as a whole. The Yucatán Peninsula of Quintana Roo, Mexico, represents an ecosystem where naturally low pH groundwater (7.25-8.07) has been discharging offshore at highly localized points (called ojos) since the last deglaciation. We present preliminary chemical and biological data on a selection of ojos from lagoon sites in Puerto Morelos, Mexico. We address the potential long-term implications of low pH waters on marine ecosystems.

Renewable energy systems in Mexico: Installation of a hybrid system

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Pate, Ronald C.

1993-05-01

Sandia has been providing technical leadership on behalf of DOE and CORECT on a working level cooperative program with Mexico on renewable energy (PROCER). As part of this effort, the Sandia Design Assistance Center (DAC) and the solar energy program staff at Instituto de Investigaciones Electricas (IIE) in Cuernavaca, Mexico, recently reached agreement on a framework for mutually beneficial technical collaboration on the monitoring and field evaluation of renewable energy systems in Mexico, particularly village-scale hybrid systems. This trip was made for the purpose of planning the details for the joint installation of a data acquisition system (DAS) on a recently completed PV/Wind/Diesel hybrid system in the village of Xcalac on the Southeast coast of the state of Quintana Roo, Mexico. The DAS installation will be made during the week of March 15, 1993. While in Mexico, discussions were also held with personnel from.the National Autonomous University of Mexico (UNAM) Solar Energy Laboratory and several private sector companies with regard to renewable energy project activities and technical and educational support needs in Mexico.

Perfil del excursionista de cruceros que visita la isla de Cozumel

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Julia Sderis Anaya Ortiz

2015-01-01

Full Text Available El turismo de cruceros se ha convertido en un sector de suma importancia para la isla de Cozumel, sin embargo se desconoce el perfil del excursionista que visita el destino, toda vez que la información que se obtiene a partir de las instancias federales como la Secretaría de Turismo (SECTUR o bien la emitida por los informes de los organismos del ramo como la Florida- Caribbean Cruise Association (FCCA o la Cruise Lines International Association, no revelan el tipo de consumidor que llega a los destinos del Caribe. A través de la realización de 350 cuestionarios con 19 ítems aplicados en el Muelle de Puerta Maya durante el verano de 2013, permitieron conocer algunas particularidades del excursionista, entre las que destacan el mínimo gasto que realizan en el destino, el cual 50% menor al reportado por la Secretaría de Turismo del estado de Quintana Roo, así como el hecho de ser un visitante repetitivo.

Gestión estratégica y competitiva de las empresas familiares turísticas mexicanas: un estudio empírico

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José Luis Esparza Aguilar

2009-04-01

Full Text Available El objetivo de este artículo es analizar las principales diferencias de la gestión estratégica y competitiva de las micro, pequeñas y medianas empresas (MiPyME familiares y no familiares turísticas del estado de Quintana Roo (México. Para llevar a cabo este trabajo, se utilizó una muestra de 138 MiPyMEs turísticas, distribuidas en 92 familiares y 46 no familiares. Los resultados muestran que no existen diferencias significativas entre las empresas familiares y las no familiares, en cuanto a la orientación de la estrategia, el nivel tecnológico y la certificación de la calidad; sin embargo, se obtuvo evidencia de que los gerentes de las empresas familiares realizan menos planificación estratégica y le dan menos importancia a los programas para la formación de los recursos humanos, además que utilizan en menor medida las herramientas de gestión, contables y financieras para el proceso de toma de decisiones

Distribución y variación morfológica de Amphiroa beauvoisii (Corallinales, Rhodophyta en México Distribution and morphological variation of Amphiroa beauvoisii (Corallinales, Rhodophyta in Mexico

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Luz Elena Mateo-Cid

2008-06-01

Full Text Available Se realizaron muestreos de Amphiroa beauvoisii (Corallinales, Rhodophyta en diversas localidades de las costas del Pacífico y Caribe mexicano de 1994 a 2007 y se efectuó una extensa revisión bibliográfica de los trabajos en los que se cita Amphiroa beauvoisii. Asimismo, se revisaron los ejemplares depositados en herbarios nacionales y extranjeros, con el propósito de determinar la distribución latitudinal, y la variación morfológica y reproductiva de esta especie. El análisis de la información nos indica que se encuentra ampliamente distribuida en la costa del Pacífico desde islas Coronados, Baja California hasta La Ventosa, Oaxaca, siendo muy frecuente en el golfo de California y en los estados de Jalisco, Guerrero y Oaxaca, mientras que en la costa atlántica su distribución se encuentra restringida a los arrecifes coralinos de Yucatán y Quintana Roo. Se describen en forma detallada los caracteres morfo-anatómicos y reproductivos. En general se observó que los talos tetrasporangiales y bisporangiales son frecuentes, de mayor talla y más ramificados que las plantas gametangiales. El material examinado mostró que en la costa del Pacifico se encuentran los talos tetrasporangiales, bisporangiales y gametangiales, mientras que en la costa del Caribe mexicano sólo se presentan poblaciones tetrasporangiales. Se registra por primera vez la fase gametofitica masculina y femenina de A. beauvoisii en poblaciones mexicanas.Several samples of Amphiroa beauvoisii (Corallinales, Rhodophyta were collected in different localities along the Pacific and Caribbean coasts of Mexican from 1994 to 2007. An extensive review of Amphiroa beauvoisii recorded from Mexico was carried out. Specimens of different herbaria were examined to determine its geographic distribution, as well as morphological and reproductive data for this taxon. Analysis of this information showed that this species is distributed along the Pacific coast from Islas Coronados, Baja

Presencia de bacterias Gram positivas en músculo de pescado con importancia comercial en la zona del Caribe mexicano Presence of Gram negative bacteria in fish muscle of commercial importance in the Mexican Caribbean zone

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Jorge Manuel Romero-Jarero

2011-06-01

Full Text Available La presencia de microorganismos patógenos en músculo de especies acuáticas de gran demanda para consumo humano es de alto riesgo para la salud pública. El crecimiento urbano en la costa del Caribe mexicano ha incrementado la contaminación de la zona, por acarreo de residuos. El objetivo del presente estudio fue determinar la diferencia cualitativa y cuantitativa de la carga bacteriana en especies de pescados de importancia comercial, antes y después de procesarse para su comercialización. Se muestreó entre la isla Contoy y bahía de la Ascensión, Quintana Roo, durante la captura y procesado. Se obtuvieron 160 muestras que fueron aisladas y purificadas en agar para Streptococcus y Staphylococcus. Se identificaron siguiendo los criterios de Mc Faddin, y Cowan y Steel. Se aplicó análisis de panel. La contaminación por diferentes especies de Streptococcus y Staphylococcus saprophyticus se registró desde el ambiente de los peces, El manejo durante su comercialización no la incrementó significativamente. El estar conformada por los mismos grupos bacterianos indica contaminación homogénea desde el ambiente marino. Los resultados de este estudio presentan datos valiosos sobre el riesgo que acarrea para la población el consumo de pescado contaminado con esos patógenos en áreas del Caribe mexicano.The presence of pathogenic microorganisms in muscle of aquatic species with high demand for human consumption can be highly dangerous for public health. Urban growth on the Mexican Caribbean coast zones had increased pollution due to urban residues accumulation. The aim of the present study is to determinate qualitative and quantitative differences in bacterial charge of commercial fish species before and after being processed. Samples of the areas between Contoy Island and Bahía de Ascensión, Quintana Roo, were obtained during commercialization, capture and processing. One hundred and sixty samples were isolated and purified in agar

Obtención de masas ovígeras del caracol lancetilla, Strombus pugilis (Mesogastropoda: Strombidae en condiciones de laboratorio

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Andrés Martín Góngora Gómez

2007-03-01

Full Text Available Se determinó la supervivencia, reproducción y el desarrollo embrionario del caracol Strombus pugilis, por un periodo de diez meses en condiciones de laboratorio. Siete progenitores fueron recolectados en Isla Contoy, Quintana Roo, México y posteriormente trasladados al laboratorio donde fueron colocados en acuarios de 80 l con agua de mar y alimentados con alimento granulado. Un total de 30 masas ovígeras fueron recolectadas, lográndose un aumento en el número de masas de huevos en abril. La longitud total estimada de una sola masa ovígera fue de 11.24 m, el número promedio de embriones encontrados en 2 cm fue de 264, obteniéndose un total de 157 500 embriones en toda la masa de huevos. Los resultados promedio de los parámetros físico-químicos a lo largo del periodo de estudio fueron los siguientes: salinidad de 37.5±0.5 ‰, pH 7.5±0.5 y temperatura de 28±0.2 °C. Con los datos aportados en este estudio se infiere que este sistema de mantenimiento y recirculación de los progenitores es excelente tanto para la reproducción como para la obtención de las masas ovígeras en condiciones controladas.Obtaining of egg masses of the snail, Strombus pugilis (Mesogastropoda: Strombidae under laboratory conditions. The survival, reproduction and embryonic development of Strombus pugilis, were determined during a period of ten months under laboratory conditions. Seven progenitors were collected in Contoy Island, Quintana Roo, Mexico and later transferred to the laboratory, where they were placed in aquarium with 80 l of sea water and fed with "pellets". A total of 30 egg masses were collected, one on September and the other on April. The estimated total length of one egg mass was 11.24 m; the mean number of embryos obtained per 2 cm was 264, obtaining an estimated total of 157 500 embryos in the egg mass. The means of the physical-chemical parameters during the study were: salinity 37.6±0.5 ‰, pH 7.5±0.5 and temperature 28±0.2 �

Hurricanes Ingrid and Manuel (2013) and their impact on the salinity of the Meteoric Water Mass, Quintana Roo, Mexico

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Coutino, Aaron; Stastna, Marek; Kovacs, Shawn; Reinhardt, Eduard

2017-08-01

We report on measurements of the salinity and temperature in the Yax Chen cave system on the Yuacatan peninsula. This paper is submitted together with Kovacs et al. (2017). Kovacs et al. focuses on the salinity levels of the meteoric lens, while this paper uses the observed results to elucidate the hydrodynamics. The cave passages have water depths on the order of 10 m, with flow on the order of ten centimeters a second, and as such is a hydrodynamic, as opposed to a porous, system. The measurements reveal that episodes of significant mixing between the fresh meteoric lens and the underlying salty water are driven by meteorological events (e.g., Hurricane Rina in 2011, and the twin Hurricanes Ingrid and Manuel in 2013). We find evidence that after the hurricanes in 2013, the water column remains unstable for several months. Through wavelet analysis, we find that the marine Water Mass (WM) exhibits much less low period activity compared to the meteoric WM. We hypothesize that the open cenotes are locations of high mixing intensity, with turbulent fronts propagating away from the sites of direct mixing into the cave network. We perform laboratory experiments and numerical simulations to explore this phenomenon, and find that mixing preferentially occurs on the flanks of regions of strong, stable density stratification (i.e., on the periphery of pycnoclines), and leads to entrainment of fluid into the turbulent region. Using high resolution direct numerical simulation, we explore the detailed manner in which turbulent entrainment can drive flow toward the mixing region, and lead to mixing of passive tracers. Finally, we discuss the implications of these results for the mixing of passive tracers, such as suspended chemicals.

Acción social y áreas naturales protegidas: refuncionalizacion de recursos en Puerto Morelos, Quintana Roo, México

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Adrian Vilchis Onofre Alejandro

2012-11-01

Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE Este artigo é o resultado de um trabalho de pesquisa teve como objetivo analisar a ação social que ocorreu em Puerto Morelos, para defender os seus recursos e seus efeitos sobre a utilização do recife. A pesquisa foi realizada no período de agosto de 2009 a maio de 2010, durante as quais foram coletadas e analisadas informações sobre o registro, além de um trabalho de campo visita a Puerto Morelos, que entrevistou os principais envolvidos na ação social, bem como alguns dos primeiros habitantes da comunidade, com base teórico-metodológicas autores como Catells (2004, Touraine (1992 e Melucci (1999,2002.

Dinámica en el uso del suelo en tres ejidos cercanos a la ciudad de Chetumal, Quintana Roo

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Gabriela García Rubio

2012-02-01

Full Text Available El cambio de uso de suelo ha provocado la degradación y transformación de muchos ecosistemas en todo el mundo. Por esto es importante conocer las causas que provocan los cambios y su futura dirección. El objetivo de este estudio es conocer la magnitud y dirección de los cambios en tres ejidos al norte de Chetumal y analizar las causas y tendencias. Para ello se clasificó la zona del estudio en imágenes Landsat ETM de 1990 y 2000, se entrevistaron 81 ejidatarios y se analizaron archivos del Registro Agrario Nacional. Los resultados revelan la importancia de la cercanía con la ciudad de Chetumal, proporciona fuentes de trabajo y mercado para productos agrícolas, lo que facilita el flujo de capital. Además, la cercanía a la capital del estado facilita el acceso a apoyos y subsidios gubernamentales, pero a la vez se presta para el establecimiento de una “ganadería recreativa” y de estatus de gente que vive en Chetumal. Se encontró una cantidad importante de vegetación secundaria mayor de cinco años, como consecuencia de los Programas Nacionales de Desmonte. Estas áreas deforestadas en los años ochenta ya no se cultivaron en los últimos años, lo que provocó una recuperación de 0.6% anual de la selva, rebasando así la transformación de la misma para actividades agropecuarias.

20 Years Spatial-Temporal Analysis of Dengue Fever and Hemorrhagic Fever in Mexico.

Science.gov (United States)

Hernández-Gaytán, Sendy Isarel; Díaz-Vásquez, Francisco Javier; Duran-Arenas, Luis Gerardo; López Cervantes, Malaquías; Rothenberg, Stephen J

2017-10-01

Dengue Fever (DF) is a human vector-borne disease and a major public health problem worldwide. In Mexico, DF and Dengue Hemorrhagic Fever (DHF) cases have increased in recent years. The aim of this study was to identify variations in the spatial distribution of DF and DHF cases over time using space-time statistical analysis and geographic information systems. Official data of DF and DHF cases were obtained in 32 states from 1995-2015. Space-time scan statistics were used to determine the space-time clusters of DF and DHF cases nationwide, and a geographic information system was used to display the location of clusters. A total of 885,748 DF cases was registered of which 13.4% (n = 119,174) correspond to DHF in the 32 states from 1995-2015. The most likely cluster of DF (relative risk = 25.5) contained the states of Jalisco, Colima, and Nayarit, on the Pacific coast in 2009, and the most likely cluster of DHF (relative risk = 8.5) was in the states of Chiapas, Tabasco, Campeche, Oaxaca, Veracruz, Quintana Roo, Yucatán, Puebla, Morelos, and Guerrero principally on the Gulf coast over 2006-2015. The geographic distribution of DF and DHF cases has increased in recent years and cases are significantly clustered in two coastal areas (Pacific and Gulf of Mexico). This provides the basis for further investigation of risk factors as well as interventions in specific areas. Copyright © 2018 IMSS. Published by Elsevier Inc. All rights reserved.

Advanced data processing of airborne electromagnetic data for imaging hidden conduit networks in the coastal karst plain of Tulum (Mexico); Tecnicas avanzadas de analisis de datos electromagneticos aerotransportados para cartografia de redes de conductos karsticos de la planicie costera de Tulum (Mexico)

Energy Technology Data Exchange (ETDEWEB)

Schiller, A.; Schattauer, I.; Ottowitz, D.

2016-07-01

This study is part of a series of international research cooperations which commenced in 2007 and are still ongoing. The study area is located on the east coast of the Yucatan Peninsula, Mexico, and comprises the northern most part of the Sian Kaan biosphere reserve, a coastal wetland of international importance, as well as the city of Tulum in the state of Quintana Roo, and part of the second largest barrier reef in the world some 300 metres to one kilometre off shore. Two airborne surveys, conducted in 2007 and 2008 by the Geological Survey of Austria, covered an area of some 200 square kilometres, including the well-known Ox Bel Ha cave system, already mapped by exploration divers. In order to get additional ground truth data and input for the hydrological model, extended ground geophysical campaigns have been conducted an - nually. The first processing of the airborne electromagnetic (AEM) data revealed not only a clear signature from known caves but also the image of a vast, unexplored, hidden conduit network. However, lateral and depth resolution was limited due to measurement drift and noise as well the specific behaviour of the ap - plied inversion technique. Newly developed algorithms for processing AEM data and inversion results have improved the signal-to-noise ratio significantly and enabled the imaging of well defined structures in the underground. Therefore, the AEM method is now capable of quickly deliver crucial structural information of karst-water regimes in difficult accessible areas with unique depth information compared to previous studies. (Author)

Advanced data processing of airborne electromagnetic data for imaging hidden conduit networks in the coastal karst plain of Tulum (Mexico)

International Nuclear Information System (INIS)

Schiller, A.; Schattauer, I.; Ottowitz, D.

2016-01-01

This study is part of a series of international research cooperations which commenced in 2007 and are still ongoing. The study area is located on the east coast of the Yucatan Peninsula, Mexico, and comprises the northern most part of the Sian Kaan biosphere reserve, a coastal wetland of international importance, as well as the city of Tulum in the state of Quintana Roo, and part of the second largest barrier reef in the world some 300 metres to one kilometre off shore. Two airborne surveys, conducted in 2007 and 2008 by the Geological Survey of Austria, covered an area of some 200 square kilometres, including the well-known Ox Bel Ha cave system, already mapped by exploration divers. In order to get additional ground truth data and input for the hydrological model, extended ground geophysical campaigns have been conducted an - nually. The first processing of the airborne electromagnetic (AEM) data revealed not only a clear signature from known caves but also the image of a vast, unexplored, hidden conduit network. However, lateral and depth resolution was limited due to measurement drift and noise as well the specific behaviour of the ap - plied inversion technique. Newly developed algorithms for processing AEM data and inversion results have improved the signal-to-noise ratio significantly and enabled the imaging of well defined structures in the underground. Therefore, the AEM method is now capable of quickly deliver crucial structural information of karst-water regimes in difficult accessible areas with unique depth information compared to previous studies. (Author)

Microsatellites loci reveal heterozygosis and population structure in vampire bats (Desmodus rotundus) (Chiroptera: Phyllostomidae) of Mexico.

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Romero-Nava, Claudia; León-Paniagua, Livia; Ortega, Jorge

2014-06-01

A limited number of studies have focused on the population genetic structure of vampire bats (Desmous rotundus) in America. This medium-sized bat is distributed in tropical areas of the continent with high prevalence in forested livestock areas. The aim of this work was to characterize the vampire population structure and their genetic differentiation. For this, we followed standard methods by which live vampires (caught by mist-netting) and preserved material from scientific collections, were obtained for a total of 15 different locations, ranging from Chihuahua (North) to Quintana Roo (Southeast). Tissue samples were obtained from both live and collected animals, and the genetic differentiation, within and among localities, was assessed by the use of seven microsatellite loci. Our results showed that all loci were polymorphic and no private alleles were detected. High levels of heterozygosis were detected when the proportion of alleles in each locus were compared. Pairwise (ST) and R(ST) detected significant genetic differentiation among individuals from different localities. Our population structure results indicate the presence of eleven clusters, with a high percentage of assigned individuals to some specific collecting site.

Los estudios de fecundidad en poblaciones contemporáneas como referentes directos para los estudios paleodemográficos

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Patricia Olga Hernández Espinoza

2014-01-01

Full Text Available Las limitantes del trabajo paleodemográfico, como la obtención de datos sobre la fecundidad de las sociedades antiguas, han impulsado el desarrollo de estrategias metodológicas para obtener esta información con algún grado de certeza. En este estudio contrastamos dos tipos de metodologías para obtener datos sobre fecundidad: la paleodemográfica basada en el análisis bioarqueológico de una serie esquelética maya prehispánica, utilizando el modelo de Weiss, y la metodología demográfica moderna aplicada a datos censales de Quintana Roo, con los que se calcularon varios indicadores de fecundidad. Los resultados muestran que el método estadístico que hemos aplicado en nuestras investigaciones permite tener un acercamiento confiable a los niveles de fecundidad y mortalidad que pudieron haber tenido estos grupos en el pasado, pues las estimaciones paleodemográficas presentan valores consistentes con la información obtenida de los censos, con un cálculo de cuatro a seis hijos para el grupo maya prehispánico de Chac Mool.

[Analysis of the impact of mortality due to suicides in Mexico, 2000-2012].

Science.gov (United States)

Dávila Cervantes, Claudio Alberto; Ochoa Torres, María del Pilar; Casique Rodríguez, Irene

2015-12-01

The objective of this study was to analyze the burden of disease due to suicide in Mexico using years of life lost (YLL) between 2000 and 2012 by sex, age group (for those under 85 years of age) and jurisdiction. Vital statistics on mortality and population estimates were used to calculate standardized mortality rates and years of life lost due to suicide. Between 2000 and 2012 a sustained increase in the suicide mortality rate was observed in Mexico. The age group with the highest rate was 85 years of age or older for men, and 15-19 years of age for women. The highest impact in life expectancy due to suicide occurred at 20 to 24 years of age in men and 15 to 19 years of age in women. The states with the highest mortality due to suicide were located in the Yucatan Peninsula (Yucatan, Quintana Roo and Campeche). Mortality due to suicide in Mexico has increased continually. As suicides are preventable, the implementation of health public policies through timely identification, integral prevention strategies and the detailed study of associated risk factors is imperative.

Microsatellites loci reveal heterozygosis and population structure in vampire bats (Desmodus rotundus (Chiroptera: Phyllostomidae of Mexico

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Claudia Romero-Nava

2014-08-01

Full Text Available A limited number of studies have focused on the population genetic structure of vampire bats (Desmodus rotundus in America. This medium-sized bat is distributed in tropical areas of the continent with high prevalence in forested livestock areas. The aim of this work was to characterize the vampire population structure and their genetic differentiation. For this, we followed standard methods by which live vampires (caught by mist-netting and preserved material from scientific collections, were obtained for a total of 15 different locations, ranging from Chihuahua (North to Quintana Roo (Southeast. Tissue samples were obtained from both live and collected animals, and the genetic differentiation, within and among localities, was assessed by the use of seven microsatellite loci. Our results showed that all loci were polymorphic and no private alleles were detected. High levels of heterozygosis were detected when the proportion of alleles in each locus were compared. Pairwise F ST and R ST detected significant genetic differentiation among individuals from different localities. Our population structure results indicate the presence of eleven clusters, with a high percentage of assigned individuals to some specific collecting site. Rev. Biol. Trop. 62 (2: 659-669. Epub 2014 June 01.

The USAID/DOE Mexico Renewable Energy Program: Using technology to build new markets

Science.gov (United States)

Hanley, Charles J.

1997-02-01

Under the Mexico Renewable Energy Program, managed by Sandia National Laboratories, sustainable markets for renewable energy technologies are developed through the implementation of pilot projects. Sandia provides technical assistance to several Mexican rural development organizations so they can gain the technical and institutional capability to appropriately utilize renewables within their ongoing programs. Activities in the area of water pumping have shown great replication potential, where the tremendous rural demand for water represents a potential renewable market of over 2 billion. Thirty-six photovoltaic water pumping projects have been installed thus far in the Mexican states of Chihuahua, Sonora, Baja California Sur, and Quintana Roo, and 60 more will be implemented this year. The majority of these projects are in partnership with the Mexican Trust for Shared Risk (FIRCO), which has asked Sandia for assistance in extending the program nationwide. This replication is beginning in five new states, and will continue to grow. Sandia is keeping the U.S. renewable energy industry involved in the program through facilitating partnerships between U.S. and Mexican vendors, and through commercialization assistance with new systems technologies. The program is sponsored by the Department of Energy and the U.S. Agency for International Development.

Apropiación social del conocimiento en cuatro grados de desarrollo empresarial en organizaciones productivas mexicanas en la frontera Sur México/ Belice. Análisis del modelo OCDE

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Francisco J. Güemez Ricalde

2015-03-01

Full Text Available Social appropriation of knowledge in four degrees of business development in Mexican production organizations in the Southern Mexico / Belize border. Analysis of the Model OECD Abstract From the inclusion of Mexico in the OECD, this research paper attempts to answer the question of technological innovation for increasing the competitiveness of the four largest firms in the state of Quintana Roo, Mexico economically and socially based on their size and characteristics. The research was part of a study conducted in the southeast of Mexico and it was sponsored by the FORDECyT. The current model of the OECD (2009-2010 with standards on the appropriation of knowledge, adapted to the direct interview method was used for the analysis.Although the results showed a noticeable backwardness in the four companies analyzed regarding the appropriation of knowledge, they also show ethnic and cultural differences in the Maya peoples living in this region when it comes to social businesses. They adopt complete technological packages and / or globalizing market models. When facing the impossibility of adopting or appropriating socially the knowledge, they are dependent on their workforce or their ancestral patterns of production and exploitation of the main resource.

Estimación poblacional y conservación de felinos (Carnivora: Felidae en el norte de Quintana Roo, México

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Dulce María Ávila-Nájera

2015-09-01

Full Text Available Resumen:La estimación de la densidad de fauna silvestre permite tener una idea del estado de salud de las poblaciones y en algunos casos indica el estado de conservación de los ecosistemas. Los métodos de evaluación deben hacer estimaciones no sesgadas, ya que servirán de base para estrategias de conservación de especies clave. Algunas regiones en México han sido identificadas como áreas de alta prioridad para la conservación de especies con cierto nivel de riesgo, como es la Península de Yucatán (PY, donde prevalece la mayor población de jaguares en México. Sin embargo, poco se sabe acerca de la situación actual de los felinos amenazados y en peligro de extinción, como un grupo de especies que conviven en la parte noreste de la Península. Nuestro objetivo fue estimar la densidad de las poblaciones de felinos silvestres a mediano plazo en la Reserva Ecológica El Edén (EEER y sus alrededores. Se llevaron a cabo muestreos con cámaras-trampa durante cuatro años (2008, 2010, 2011 y 2012, se usaron modelos de captura-recaptura para poblaciones cerradas (CAPTURA + MMDM o VMMDM y un modelo de C-R espacial-mente explícito (CERC por medio del paquete SPCACAP para realizar las estimaciones de densidad. Las especies estudiadas fueron: jaguar (Panthera onca,puma (Puma concolor,ocelote (Leopardus pardalis,jaguarundi (Puma yaguaroundiy tigrillo (Leopardus wiedii.La frecuencia de captura se obtuvo para las cinco especies y la densidad para tres (individuos/100km2. La densidad estimada por medio de MMDM varió entre 1.2 y 2.6 para jaguares, pumas (1.7-4.3 y ocelotes (1.4-13.8. Las estimaciones de la densidad en SPACECAP variaron desde 0.7 hasta 3.6 para jaguares, de 1.8 a 5.2 para pumas y de 2.1 a 5.1 en ocelotes. El método de C-R espacialmente explícito (SECR, SPACECAP tiene menos probabilidades de sobrestimar la densidad, lo que provee una herramienta útil en el proceso de planificación y toma de decisiones para la conservación de estas especies. La parte noreste de la Península de Yucatán mantiene poblaciones altas de felinos, la REEE y sus alrededores son clave para la conservación de este grupo de depredadores.

Composition and abundance of zooplankton groups from a coral reef lagoon in Puerto Morelos, Quintana Roo, Mexico, during an annual cycle.

Science.gov (United States)

Alvarez-Cadena, José N; Ordóñez-López, Uriel; Almaral-Mendivil, Alma Rosa; Uicab-Sabido, Amira

2009-09-01

Zooplankton sampling was carried out monthly from January to December 1990 at station A near the coastline, and station B near the reef barrier, in a tropical coral reef lagoon in the Mexican Caribbean Sea. Samplings were made at midnight, near surface, with a conical net (mouth 0.40 m, mesh 330 microm) for 10 min. Salinity varied from 35.1 to 36.3 psu and temperature from 26.3 to 30.2 degrees C. The Bray-Curtis test applied to these results has defined two seasons: the dry season from November to May, and the wet season from June to October. A total of 37 zooplankton groups were found. Copepods were the most abundant contributing 49.0% of the total capture with Acartia espinata, Calanopia americana and Farranula gracilis as the most numerous. In the total zooplankton, however, cirripeds captured in only 15 samples of 24 were second in abundance (20.9%). Decapods, present all year-round and more abundant during the wet season, were third and contributed 19.2%. The rest of the groups were scarce and only amphipods (2.4%) and larvaceans (2.0%) were relatively abundant. The abundance of captured organisms correlated with the abiotic factors measured, thus, in the dry season, abundance was lower (mean 7.3 orgs/m3), while in the wet season the mean catch was 36.8 orgs/m3.

Redescription of Ascarophis ayalai (Nematoda: Cystidicolidae) from the Mayan sea catfish Ariopsis assimilis from the Bay of Chetumal, Quintana Roo, Mexico

Czech Academy of Sciences Publication Activity Database

González-Solís, D.; Moravec, František; Vidal-Martínez, V. M.; Aguirre-Macedo, M. L.

2002-01-01

Roč. 69, č. 1 (2002), s. 66-71 ISSN 1525-2647 R&D Projects: GA AV ČR IAA6022901 Institutional research plan: CEZ:AV0Z6022909 Keywords : nematodes * Ascarophis ayalai * Ariopsis assimilis Subject RIV: EG - Zoology Impact factor: 0.613, year: 2002

A new species of Acanthobothrium (Eucestoda: Onchobothriidae in Aetobatus cf. narinari (Myliobatidae from Campeche, México

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Erick Rodríguez-Ibarra

2018-03-01

Full Text Available Abstract The helminthological examination of nine individuals of Aetobatus cf. narinari (spotted eagle ray; raya pinta; arraia pintada revealed the presence of an undescribed species of cestode of the genus Acanthobothrium. The stingrays were collected from four locations in México: Laguna Términos, south of Isla del Carmen and the marine waters north of Isla del Carmen and Champotón, in the State of Campeche, and Isla Holbox, State of Quintana Roo. The new species, nominated Acanthobothrium marquesi, is a category 3 species (i.e, the strobila is long, has more than 50 proglottids, the numerous testicles greater than 80, and has asymmetrically-lobed ovaries; at the present, the only category 3 species that has been reported in the Western Atlantic Ocean is Acanthobothrium tortum. Acanthobothrium marquesi n. sp. can be distinguished from A. tortum by length (26.1 cm vs. 10.6 cm, greater number of proglottids (1,549 vs. 656, a larger scolex (707 µm long by 872 µm wide vs. 699 µm long by 665 µm wide, larger bothridia (626 µm long by 274 µm wide vs. 563 µm long by 238 µm wide. This is the first report of a species of Acanthobothrium from the Mexican coast of the Gulf México.

Assessment of human activities impact on groundwater quality discharging into a reef lagoon

Science.gov (United States)

Rebolledo-Vieyra, M.; Hernandez, L.; Paytan, A.; Merino-Ibarra, M.; Lecossec, A.; Soto, M.

2010-03-01

The Eastern coast of the Yucatan Peninsula has the fastest growth rate in Mexico and groundwater is the only source of drinking water in the region. The consequences of the lack of proper infrastructure to collect and treat wastewater and the impact of human activities on the quality of groundwater are addressed. The groundwater in the coastal aquifer of Quintana Roo (SE Mexico) discharges directly into the ocean (Submarine Groundwater Discharges). In addition, the coral reef of the Eastern Yucatan Peninsula is part of the Mesoamerican Coral Reef System, one of the largest in the world. The interaction of the reef-lagoon hydraulics with the coastal aquifer of Puerto Morelos (NE Yucatan Peninsula), and a major input of NH4, SO4, SiO2, as a consequence of the use of septic tanks and the lack of modern wastewater treatment plants are presented. A conceptual model of the coastal aquifer was developed, in order to explain how the human activities are impacting directly on the groundwater quality that, potentially, will have a direct impact on the coral reef. The protection and conservation of coral reefs must be directly related with a policy of sound management of coastal aquifers and wastewater treatment.

Comportamiento del mercado turístico extranjero en el Caribe Mexicano

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Dr. Francisco J. Güemes-Ricalde

2009-11-01

Full Text Available El Caribe mexicano atrae visitantes de regiones distintas en diferentes épocas del año. A los prestadores de servicios turísticos les resulta difícil conocer y separar las preferencias de actividades que realizan los visitantes de cada país. Arriban visitantes mexicanos y extranjeros, las preferencias de estos últimos en relación a la demanda de servicios son diferentes. Contrario a lo que se conocía, el estudio de mercado determinó que la demanda mexicana representa un mercado importante en marcadas épocas del año. Se calcula que cada año alrededor de dos millones de turistas nacionales arriban a la Riviera y Costa Maya en la región norte de Quintana Roo. Conocer las preferencias de consumo de los diferentes segmentos de turistas y la forma en que evalúan la posibilidad de demandar los servicios turísticos da la pauta para ofrecérselos en forma diferenciada y adecuada a cada segmento y en relación a cada una de las diversas actividades turísticas que realizan, entre ellas el ecoturismo de la cual poco se conoce en esta región del país.

Multilevel Governance for Forests and Climate Change: Learning from Southern Mexico

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Salla Rantala

2014-12-01

Full Text Available Reducing emissions from deforestation and forest degradation (REDD+ involves global and national policy measures as well as effective action at the landscape scale across productive sectors. Multilevel governance (MLG characterizes policy processes and regimes of cross-scale and cross-sector participation by multiple public and private actors for improved legitimacy and effectiveness of policy. We examine multilevel, multi-actor engagement in REDD+ planning in Quintana Roo, Mexico, to find out how local perspectives align with the national policy approach to REDD+ as an integrating element of holistic rural development at territorial scale, and how current practices support procedurally legitimate MLG required to implement it. We find that there is wide conceptual agreement on the proposed approach by a variety of involved actors, in rejection of the business-as-usual sectoral interventions. Its implementation, however, is challenged by gaps in horizontal and vertical integration due to strong sectoral identities and hierarchies, and de facto centralization of power at the federal level. Continued participation of multiple government and civil society actors to contribute to social learning for locally appropriate REDD+ actions is likely to require a more balanced distribution of resources and influence across levels. Meaningfully engaging and ensuring the representation of local community interests in the process remains a critical challenge.

Maya Lime Mortars—Relationship between Archaeomagnetic Dating, Manufacturing Technique, and Architectural Function—The Dzibanché Case

Directory of Open Access Journals (Sweden)

Luisa Straulino Mainou

2016-11-01

Full Text Available Researchers have related the manufacturing technique of plasters and stucco in the Maya area with their period of production but not with their architectural function. In this paper, we establish a relationship between those three features (manufacturing technique, age, and architectural function in the plasters of the Maya site of Dzibanché in southern Quintana Roo. Dzibanché has abundant remains of stuccos and plasters found mainly in three buildings (Plaza Pom, Pequeña Acrópolis, and Structure 2. We used thin sections, SEM and XRD, and archaeomagnetic dating processes. The pictorial layer of Structure 2 was the earliest (AD 274–316 and the stuccoes and plasters of the other two buildings were dated to the Middle Classic (AD 422–531, but we obtained different archaeomagnetic dates for the red pigment layers found in the buildings of the Pequeña Acrópolis and thus we were able to determine their chronological order of construction. The raw materials and proportions were carefully chosen to fulfil the mechanical necessities of the architectonic function: different proportions were found in plasters of floors, in the external walls, and inside the buildings; differences between earlier and later plasters were also detected.

[Preclinical horizon of depression in adults].

Science.gov (United States)

Jiménez-Báez, María Valeria; Márquez-González, Horacio; Monsreal-Góngora, Juan Leonardo; Góngora-González, Gonzalo; Sandoval-Jurado, Luis; Boquer-Hernández, Rubén

2016-01-01

Identify factors related to preclinical depression in healthy adults, their risk factors and concordance with family doctor diagnostic. Case-control study in adult from family medicine consulting room. Beck inventory for depression was applied. The correlation between depression and the diagnosis by the family physician was evaluated. Odds ratio (OR) was determined. Involved 138 patients randomly from four family medicine units (FMU) in the Northern Region of Quintana Roo, Mexico. The mean age 34.9 ± 11.4 years, 55.8% women, prevalence for depression was 26.1%. Being male OR: 3.76; 95% CI: 1.69-8.36, under 30 years OR: 2.76; 95% CI: 1.27-5.99, low socioeconomic status (SES) OR: 2.11; 95% CI: 0.97-4.59 and be married OR: 3.22; 95% CI: 1.41.-7.36 had depression risk. Diagnosis by the family physician and inventory Beck. Kappa Index 0.2, 95% CI: -0057-0176; p = 0.05. Almost a third of young adults have some depression degree in family medicine consulting room, it is necessary a depression screening for male patients, low SES, married, and under 30 years old, attending medical consultation familiar, for a early diagnosis and improve prognosis.

Chemical composition of precipitation in a Mexican Maya region

Science.gov (United States)

Bravo, H. A.; Saavedra, M. I. R.; Sánchez, P. A.; Torres, R. J.; Granada, L. M. M.

The chemical characteristics of wet precipitation in Puerto Morelos, Quintana Roo State, Mexico, were measured from April 1994 to December 1995. Puerto Morelos is located in the Caribbean Mayan coastal region of the Peninsula of Yucatan, and is normally exposed to winds from the Caribbean region. Wetfall was analyzed for pH, conductivity and Cl -, NO 3-, SO 42-, Na +, NH 4+, K +, Mg 2+ and Ca 2+ ion concentrations. Volume-weighted mean pH for the whole sampling period was 5.35, although values as low as 4.6 were measured in several rain samples. Concentrations of all species correlated negatively with rain volume. Sea-salt aerosols contributed with most of the Na +, Cl -, Mg 2+, K + and SO 42- found in wet precipitation. The mean [SO 42-excess] was 9.7 μEq l -1, which agrees with the background hemispheric values of ≈10 μEq l -1 reported elsewhere. The mean [NO 3-] was 11.4 μEq l -1, almost four times higher than the background hemispheric value of ≈2.5 μEq l -1 reported elsewhere. However, a major component causing the slight acidity character of rain in Puerto Morelos seems to be H 2SO 4.

Software for improved field surveys of nesting marine turtles.

Science.gov (United States)

Anastácio, R; Gonzalez, J M; Slater, K; Pereira, M J

2017-09-07

Field data are still recorded on paper in many worldwide beach surveys of nesting marine turtles. The data must be subsequently transferred into an electronic database, and this can introduce errors in the dataset. To minimize such errors, the "Turtles" software was developed and piloted to record field data by one software user accompanying one Tortuguero in Akumal beaches, Quintana Roo, Mexico, from June 1 st to July 31 st during the night patrols. Comparisons were made between exported data from the software with the paper forms entered into a database (henceforth traditional). Preliminary assessment indicated that the software user tended to record a greater amount of metrics (i.e., an average of 18.3 fields ± 5.4 sd vs. 8.6 fields ± 2.1 sd recorded by the traditional method). The traditional method introduce three types of "errors" into a dataset: missing values in relevant fields (40.1%), different answers for the same value (9.8%), and inconsistent data (0.9%). Only 5.8% of these (missing values) were found with the software methodology. Although only tested by a single user, the software may suggest increased efficacy and warrants further examination to accurately assess the merit of replacing traditional methods of data recording for beach monitoring programmes.

Impact of changes to policy for Mexican risk travel on Canadian blood donor deferrals.

Science.gov (United States)

O'Brien, Sheila F; Uzicanin, Samra; Choquet, Karine; Yi, Qi-Long; Fan, Wenli; Goldman, Mindy

2013-10-01

Travel to malaria risk areas such as Mexico is a common source of donor deferral in Canada. On February 21st, 2011 the deferrable regions in Mexico were revised to permit donation if donors travelled to the state of Quintana Roo, Mexico, a popular ocean-side resort area. Canadian travel data and malaria deferral rates since 2007 were plotted to examine trends. Deferral records in one centre were accessed from January to April, 2011 to tabulate travel destinations of deferred donors immediately before and after the change. Travel to Mexico and the Caribbean accounts for 63% of general population travel, and travel to Mexico has been increasing (P <0.05). Deferral for short-term malaria risk travel has a strong seasonal trend with peaks in the winter and troughs in the summer. Approximately 36,000 fewer donations were lost following the change, a reduction of 37% from the previous year. Deferrals in one centre increased for Caribbean/Central America after the change (P <0.05) consistent with the seasonal trend, but decreased for Mexico (P <0.05). Deferrals for malaria risk travel are substantial. Careful revision and refinement of risk areas of travel can significantly reduce the burden of deferral.

The impact of low pH, low aragonite saturation state on calcifying corals: an in-situ study of ocean acidification from the "ojos" of Puerto Morelos, Mexico

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Crook, E. D.; Paytan, A.; Potts, D. C.; Hernandez Terrones, L.; Rebolledo-Vieyra, M.

2010-12-01

Recent increases in atmospheric carbon dioxide have resulted in rising aqueous CO2 concentrations that lower the pH of the oceans (Caldeira and Wickett 2003, 2005, Doney et al., 2009). It is estimated that over the next 100 years, the pH of the surface oceans will decrease by ~0.4 pH units (Orr et al., 2005), which is expected to hinder the calcifying capabilities of numerous marine organisms. Previous field work (Hall-Spencer et al., 2008) indicates that ocean acidification will negatively impact calcifying species; however, to date, very little is known about the long-term impacts of ocean acidification from the in-situ study of coral reef ecosystems. The Yucatán Peninsula of Quintana Roo, Mexico, represents an ecosystem where naturally low pH groundwater (7.14-8.07) has been discharging offshore at highly localized points (called ojos) for millennia. We present preliminary chemical and biological data on a selection of ojos from lagoon sites in Puerto Morelos, Mexico. Our findings indicate a decrease in species richness and size with proximity to the low pH waters. We address the potential long-term implications of low pH, low aragonite saturation state on coral reef ecosystems.

A new species of Acanthobothrium (Eucestoda: Onchobothriidae) in Aetobatus cf. narinari (Myliobatidae) from Campeche, México.

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Rodríguez-Ibarra, Erick; Pulido-Flores, Griselda; Violante-González, Juan; Monks, Scott

2018-01-01

The helminthological examination of nine individuals of Aetobatus cf. narinari (spotted eagle ray; raya pinta; arraia pintada) revealed the presence of an undescribed species of cestode of the genus Acanthobothrium. The stingrays were collected from four locations in México: Laguna Términos, south of Isla del Carmen and the marine waters north of Isla del Carmen and Champotón, in the State of Campeche, and Isla Holbox, State of Quintana Roo. The new species, nominated Acanthobothrium marquesi, is a category 3 species (i.e, the strobila is long, has more than 50 proglottids, the numerous testicles greater than 80, and has asymmetrically-lobed ovaries); at the present, the only category 3 species that has been reported in the Western Atlantic Ocean is Acanthobothrium tortum. Acanthobothrium marquesi n. sp. can be distinguished from A. tortum by length (26.1 cm vs. 10.6 cm), greater number of proglottids (1,549 vs. 656), a larger scolex (707 µm long by 872 µm wide vs. 699 µm long by 665 µm wide), larger bothridia (626 µm long by 274 µm wide vs. 563 µm long by 238 µm wide). This is the first report of a species of Acanthobothrium from the Mexican coast of the Gulf México.

Multitemporal spatial pattern analysis of Tulum's tropical coastal landscape

Science.gov (United States)

Ramírez-Forero, Sandra Carolina; López-Caloca, Alejandra; Silván-Cárdenas, José Luis

2011-11-01

The tropical coastal landscape of Tulum in Quintana Roo, Mexico has a high ecological, economical, social and cultural value, it provides environmental and tourism services at global, national, regional and local levels. The landscape of the area is heterogeneous and presents random fragmentation patterns. In recent years, tourist services of the region has been increased promoting an accelerate expansion of hotels, transportation and recreation infrastructure altering the complex landscape. It is important to understand the environmental dynamics through temporal changes on the spatial patterns and to propose a better management of this ecological area to the authorities. This paper addresses a multi-temporal analysis of land cover changes from 1993 to 2000 in Tulum using Thematic Mapper data acquired by Landsat-5. Two independent methodologies were applied for the analysis of changes in the landscape and for the definition of fragmentation patterns. First, an Iteratively Multivariate Alteration Detection (IR-MAD) algorithm was used to detect and localize land cover change/no-change areas. Second, the post-classification change detection evaluated using the Support Vector Machine (SVM) algorithm. Landscape metrics were calculated from the results of IR-MAD and SVM. The analysis of the metrics indicated, among other things, a higher fragmentation pattern along roadways.

The USAID/DOE Mexico Renewable Energy Program: Using technology to build new markets

International Nuclear Information System (INIS)

Hanley, C.J.

1997-01-01

Under the Mexico Renewable Energy Program, managed by Sandia National Laboratories, sustainable markets for renewable energy technologies are developed through the implementation of pilot projects. Sandia provides technical assistance to several Mexican rural development organizations so they can gain the technical and institutional capability to appropriately utilize renewables within their ongoing programs. Activities in the area of water pumping have shown great replication potential, where the tremendous rural demand for water represents a potential renewable market of over $2 billion. Thirty-six photovoltaic water pumping projects have been installed thus far in the Mexican states of Chihuahua, Sonora, Baja California Sur, and Quintana Roo, and 60 more will be implemented this year. The majority of these projects are in partnership with the Mexican Trust for Shared Risk (FIRCO), which has asked Sandia for assistance in extending the program nationwide. This replication is beginning in five new states, and will continue to grow. Sandia is keeping the U.S. renewable energy industry involved in the program through facilitating partnerships between U.S. and Mexican vendors, and through commercialization assistance with new systems technologies. The program is sponsored by the Department of Energy and the U.S. Agency for International Development. copyright 1997 American Institute of Physics

Influenza seasonality goes south in the Yucatan Peninsula: The case for a different influenza vaccine calendar in this Mexican region.

Science.gov (United States)

Ayora-Talavera, Guadalupe; Flores, Gerardo Montalvo-Zurbia; Gómez-Carballo, Jesus; González-Losa, Refugio; Conde-Ferraez, Laura; Puerto-Solís, Marylin; López-Martínez, Irma; Díaz-Quiñonez, Alberto; Barrera-Badillo, Gisela; Acuna-Soto, Rodolfo; Livinski, Alicia A; Alonso, Wladimir J

2017-08-24

While vaccination may be relatively straightforward for regions with a well-defined winter season, the situation is quite different for tropical regions. Influenza activity in tropical regions might be out of phase with the dynamics predicted for their hemispheric group thereby impacting the effectiveness of the immunization campaign. To investigate how the climatic diversity of Mexico hinders its existing influenza immunization strategy and to suggest that the hemispheric vaccine recommendations be tailored to the regional level in order to optimize vaccine effectiveness. We studied the seasonality of influenza throughoutMexico by modeling virological and mortality data.De-trended time series of each Mexican state were analyzed by Fourier decomposition to describe the amplitude and timing of annual influenza epidemic cycles and to compare with each the timing of the WHO's Northern and Southern Hemispheric vaccination schedule. The timings of the primary (major) peaks of both virological and mortality data for most Mexican states are well aligned with the Northern Hemisphere winter (December-February) and vaccine schedule. However, influenza peaks in September in the three states of the Yucatan Peninsula. Influenza-related mortality also peaks in September in Quintana Roo and Yucatan whereas it peaks in May in Campeche. As the current timing of vaccination in Mexico is between October and November, more than half of the annual influenza cases have already occurred in the Yucatan Peninsula states by the time the Northern Hemispheric vaccine is delivered and administered. The current Northern Hemispheric influenza calendar adopted for Mexico is not optimal for the Yucatan Peninsula states thereby likely reducing the effectiveness of the immunization of the population. We recommend that Mexico tailor its immunization strategy to better reflect its climatologic and epidemiological diversity and adopt the WHO Southern Hemisphere influenza vaccine and schedule for the

Guacamaya: símbolo de temporalidad y fertilidad en dos ejemplos de pintura mural The Macaw: a Symbol of Temporality and Fertility in Two Examples from Mural Painting

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María de Lourdes Navarijo Ornelas

2012-01-01

Full Text Available En el pensamiento prehispánico, la guacamaya (Ara macao y Ara militaris ocupó un lugar preferente, como lo atestigua su imagen plasmada en los murales creados por diferentes pueblos, como el maya, el zapoteca, el teotihuacano, o como se ve en Cacaxtla. Esto no es una coincidencia, por lo que este estudio tiene por objeto analizar y reconocer la identidad taxonómica de los individuos recreados, además de argumentar su presencia en el lenguaje pictórico como un medio de expresión gráfica irrefutable. Para este fin se trabaja con la pintura mural de dos sitios arqueológicos: el mural 1, Los pájaros, de la Estructura 86 en Xelhá, situado en la zona norte de Quintana Roo; y el mural oriente del Templo Rojo en Cacaxtla, Tlaxcala. De acuerdo con las modalidades de representación gráfica y bajo los criterios de integración temática se aborda la lectura de las escenas considerando a los otros elementos iconográficos que las integran. El resultado es una propuesta de participación simbólica de las guacamayas enfocada en la abstracción del tiempo a partir de la conducta diaria y estacional de esta especie de psitácido ruidosa (y de plumaje llamativo y sugerente; también se considera la asociación de estos animales con los conceptos de vida, movimiento y temporalidad, y con el Sol y el agua (este último como el elemento primordial vinculado con la fertilidad.In pre-Hispanic thought, Macaw (Ara macao and Ara militaris occupy a place of honour, as witness its image captured in the murals created by different peoples, such as the Maya, the Zapotec, the ancient inhabitants of Teotihuacan and Cacaxtla. This is not a coincidence, which is why this study aims to analyze and recognize the taxonomic identity of recreated individuals, as well as argue their presence in the pictorial language as a mean of irrefutable graphic expression. To this end works with mural paintings from two archaeological sites are analyzed: the mural 1 "The birds" of

Meiosis en mutantes desinápticos con restitución cromosómica en Rhoeo spathacea (Commelinaceae Meiosis in desynaptic-chromosomal restitution mutants in Rhoeo spathacea (Commelinaceae

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Armando García-Velázquez

2008-10-01

Full Text Available El estudio se llevó a cabo en recolectas de Rhoeo spathacea realizadas en Veracruz, Chiapas, Tabasco, Yucatán, Quintana Roo y Michoacán, México. Las plantas presentaron número diploide de cromosomas (2n=12 en mitosis. En meiosis los individuos formaron anillo y/o cadenas en metafase I, con excepción de varios mutantes desinápticos-RSD (separación de cromosomas apareados. En meiosis de Rhoeo no se observan bivalentes ni hay posibilidades de entrecruzamiento, y consecuentemente no habrá quiasmas ya que no hay cuatro cromátidas de las cuales dos deberían ser no-hermanas. Sin embargo, en anafase I hay disyunción altamente regular 6:6 que se presentan como "anillos o donas" con los brazos cortos hacia el interior de esas figuras. De la autofecundación de un mutante desináptico-RSD (GAVA 1.1 se obtuvo una progenie F2 de 123 individuos: 90 diploides-formadores de anillos y 1 acrotrisómico (2n=13. Esto es, 91 individuos "revirtieron" el comportamiento y 29 fueron diploandróginos tetraploides desinápticos (2n=24 y 3 hipertetraploides (2n=25 desinápticos. Este comportamiento diferente entre hermanos confirma que Rhoeo es dicarión: los diploides- con anillo tendrán el subgenoma A, y los tetraploides el B, que incluyen cromatidas hermanas en la restitución en segunda división (2n.This study was carried out with collected material of Rhoeo spathacea in the states of Veracruz, Chiapas, Tabasco, Yucatan, Quintana Roo and Michoacan, Mexico. All material exhibited a diploid chromosome number (2n =12 in mitosis. In meiosis, all individuals showedring and /or chains at metaphase I. Exceptionally several desynaptic mutants resulted desynaptic - SDR (dissociation of paired chromosomes. Therefore, in meiosis Rhoeo did not exhibit synapsis in parallel-fashion instead the chromosomes are united in end-to-end (no chiasmata- fashion. Then, there are not bivalents, no chiasmata-achiasmata- as there are not four chromatids two of which resulted sister

Estructura y diversidad genética de Annona squamosa en huertos familiares mayas de la península de Yucatán Genetic structure and diversity of Annona squamosa in Mayan homegardens of Yucatán Peninsula

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Carmen Salazar

2010-12-01

Full Text Available Los huertos familiares del sureste de México son sitios donde se ha domesticado y conservado una alta diversidad de especies y variedades, lo cual ha generado cambios en su variabilidad genética. Con el fin de conocer la relación entre la actividad económica en una región y la distribución de la variabilidad genética de Annona squamosa L. —uno de los árboles frutales más representativos en estos sistemas—, se analizaron árboles en huertos de los estados de Yucatán y Quintana Roo mediante el uso de marcadores isoenzimáticos. El estudio se llevo a cabo en 14 poblaciones de 5 regiones que diferían en su principal actividad económica. Los resultados muestran que todos los marcadores fueron polimórficos con 3 o 4 alelos. El número promedio de alelos y de alelos en loci polimórficos fueron altos respecto a otros árboles cultivados, lo que sugiere que los efectos de la deriva génica no han sido importantes. La heterocigosis promedio observada fue de 0.373 ± 0.03 y la esperada de 0.470 ± 0.023. El análisis de la distribución jerárquica de la variación indica que el mayor nivel de variación (85% se encuentra dentro de las poblaciones. La variación entre poblaciones de una misma región fue del 12% y menos importante entre regiones, donde fue del 2%, lo que indica que no hay un efecto de las actividades socioeconómicas en la distribución de la variabilidad genética.Many plant and animal species have been domesticated in southeastern Mexican homegardens, resulting in changes in their genetic variability. One of the most representative fruit trees in these systems is Annona squamosa L. We wanted to know if the predominant type of economic activity in a given area affects the distribution of genetic variability in A. squamosa. In order to answer this question, we analyzed 14 populations in 5 different socioeconomic regions in the states of Yucatán and Quintana Roo, using isozyme analysis. All the enzyme markers were

Tagasivõidetud Volta kvartalist saab autovaba keskkond / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2007-01-01

Tallinna Volta kvartali arhitektuurikonkursist. I koht - soome arhitektuuribüroo AW2 Arkkitehdit. II koht - arhitektuuribüroo Kosmos. III koht - KOKO Arhitektid. Osalesid veel arhitektuuribüroo Muru & Pere ning arhitektuuribüroo Ehala & Irik. Žürii koosseis. Küsimustele vastab võidutöö autor Matti Anttila

Oxidative stability of refined olive and sunflower oils supplemented with lycopene-rich oleoresin from tomato peels industrial by-product, during accelerated shelf-life storage.

Science.gov (United States)

Kehili, Mouna; Choura, Sirine; Zammel, Ayachi; Allouche, Noureddine; Sayadi, Sami

2018-04-25

Tomato peels by-product from a Tunisian industry was used for the extraction of lycopene-rich oleoresin using hexane solvent maceration. Tomato peels oleoresin, TPO, exhibited competitive free radicals scavenging activity with synthetic antioxidants. The efficacy of TPO in stabilizing refined olive (ROO) and sunflower (RSO) oils was investigated for five months, under accelerated shelf-life, compared to the synthetic antioxidant, butylated hydroxytoluene (BHT). TPO was added to ROO and RSO at four different concentrations, namely 250, 500, 1000 and 2000 µg/g and BHT standard at 200 µg/g. Lipid oxidation was tracked by measuring the peroxide value, acidity, conjugated dienes and trienes. Results suggested the highest efficiency of 250 µg/g and 2000 µg/g of TPO, referring to 5 µg/g and 40 µg/g of lycopene, for the oxidative stabilization of ROO and RSO, respectively. The protective effect of TPO against the primary oxidation of these refined oils was significantly correlated to their lycopene contents. Copyright © 2017 Elsevier Ltd. All rights reserved.

UCP Mainport : kontseptuaalne uurimus Utrechti raudteejaama maa-ala arendamiseks = UCP Mainport : concept study redevelopment station area Utrecht

Index Scriptorium Estoniae

2000-01-01

Mainporti projekti arhitekt Ben van Berkel, projekteerijad: Van Berkel & Bos, Holland Railconsult. Projekti II etapis uuriti Hoog Catherijne ostukeskuse laiendamist. Projekteerijad: Van Berkel & Bos, Neutelings & Riedijk, Alsop & Störmer.Van Berkel & Bos (arhitektibüroo, Holland). Holland Railconsult (projekteerimisbüroo, Utrecht). Alsop & Störmer (arhitektibüroo, London). Neutelings & Riedijk (arhitektibüroo, Rotterdam)

Evaluating the human impact on groundwater quality discharging into a coastal reef lagoon

Science.gov (United States)

Rebolledo-Vieyra, M.; Hernandez-Terrones, L.; Soto, M.; Lecossec, A.; Monroy-Rios, E.

2008-12-01

The Eastern coast of the Yucatan Peninsula has the fastest growth rate in Mexico and groundwater is the only source of drinking water in the region. The consequences of the lack of proper infrastructure to collect and treat wastewater and the impact of human activities on the quality of groundwater are addressed. The groundwater in the coastal aquifer of Quintana Roo (SE Mexico) discharges directly into the ocean. In addition, the coral reef of the Eastern Yucatan Peninsula is part of the Mesoamerican Coral Reef System, one of the largest in the world. The interaction of the reef-lagoon hydraulics with the coastal aquifer of Puerto Morelos (NE Yucatan Peninsula), and a major input of NH4, SO4, SiO2, as a consequence of the use of septic tanks and the lack of modern wastewater treatment plants are presented. No seasonal parameters differences were observed, suggesting that groundwater composition reaching the reef lagoon is not changing seasonally. A conceptual model of the coastal aquifer was developed, in order to explain how the human activities are impacting directly on the groundwater quality that, potentially, will have a direct impact on the coral reef. The protection and conservation of coral reefs must be directly related with a policy of sound management of coastal aquifers and wastewater treatment.

[Relative abundance, population structure, habitat preferences and activity patterns of Tapirus bairdii (Perissodactyla: Tapiridae), in Chimalapas forest, Oaxaca, Mexico].

Science.gov (United States)

Lira-Torres, Iván; Briones-Salas, Miguel; Sánchez-Rojas, Gerardo

2014-12-01

Baird's tapir (Tapirus bairdii) is endangered primarily because of habitat loss and fragmentation, and overhunting throughout its distribution range. One of the priority land areas for the conservation of this species is the Northern part of its range in the Chimalapas forest, Oaxaca. The aim of this research was to determine the relative abundance, population struc- ture, habitat preferences and activity patterns of Baird's tapir (Tapirus bairdii) in the Chimalapas forest, Oaxaca, Mexico, through the non-invasive technique of camera-trap sampling. A total of five sampling sessions were undertaken among 2009-2013, and used a total of 30 camera-traps in each period. The determinant factor of the sampling design was the hunting between two study areas. A total sampling effort of 9000 trap-days allowed to estimate an index of relative abundance (IRA) of 6.77 tapir photographs/1,000 trap-days (n = 61). IRA varied significantly between sampling stations (Mann-Whitney, p dry season in tropical rain forest without hunting (χ2, p tropical rain forest and secondary vegetation habitats showed higher photo frequency than expected from random (χ2, p forest appears to be the second most important terrestrial priority ecoregion, just after the Mayan Forest (Campeche, Chiapas, Quintana Roo), for the conservation of tapir populations, not only for Mexico but also for Central America.

Morphological and physiological responses of seagrasses (Alismatales to grazers (Testudines: Cheloniidae and the role of these responses as grazing patch abandonment cues

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Elizabeth A. Lacey

2014-12-01

Full Text Available Green sea turtles, Chelonia mydas, are grazers influencing the distribution of seagrass within shallow coastal ecosystems, yet the drivers behind C. mydas patch use within seagrass beds are largely unknown. Current theories center on food quality (nutrient content as the plant responds to grazing disturbances; however, no study has monitored these parameters in a natural setting without grazer manipulation. To determine the morphological and physiological responses potentially influencing seagrass recovery from grazing disturbances, seagrasses were monitored for one year under three different grazing scenarios (turtle grazed, fish grazed and ungrazed in a tropical ecosystem in Akumal Bay, Quintana Roo, Mexico. Significantly less soluble carbohydrates and increased nitrogen and phosphorus content in Thalassia testudinum were indicative of the stresses placed on seagrasses during herbivory. To determine if these physiological responses were the drivers of the heterogeneous grazing behavior by C. mydas recorded in Akumal Bay, patches were mapped and monitored over a six-month interval. The abandoned patches had the lowest standing crop rather than leaf nutrient or rhizome soluble carbohydrate content. This suggests a modified Giving Up Density (GUD behavior: the critical threshold where cost of continued grazing does not provide minimum nutrients, therefore, new patches must be utilized, explains resource abandonment and mechanism behind C. mydas grazing. This study is the first to apply GUD theory, often applied in terrestrial literature, to explain marine herbivore grazing behavior.

Abundancia y diversidad larval de gasterópodos en el Caribe Mexicano en relación con la temperatura, la salinidad y el oxígeno disuelto

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José Francisco Chávez Villegas

2014-09-01

Full Text Available Quintana Roo tiene mas de 500 especies de gasterópodos pero muy poco se conoce de los estadios larvales. Muestreamos cuatro sitios mensualmente de enero a diciembre de 2008 con arrastres de plancton por triplicado y con una red cónica con malla de 300μm. Puerto Morelos tuvo los mayores registros (41.26±63.23 larvas•10m-3, seguido por Mahahual (14.78±28.21 larvas•10m-3, Sian Ka’an y Xel-Há presentaron las densidades menores (9.16±16.73 y 3.35±4.33 larvas•10m-3, respectivamente. Mayo y agosto presentaron los mayores registros (33.66±67.39 y 31.78±25.92 larvas•10m-3, respectivamente, marzo y diciembre los menores (1.70±1.88 y 3.18±5.27 larvas•10 m-3 respectivamente. Se registraron diferencias significativas en la densidad media espacial (p:<0.0001 y temporal (p: 0.0275. Identificamos un total de 33 especies de gasterópodos de los géneros Strombus, Natica, Cerithium, Nassarius, Neritidae, Cerithiopsis, Nannodiela, Rissoina, Bulla, Bittium, Modulus y Prunum, de las cuales 28 especies se registraron en Puerto Morelos. Natica, Epithonium y Cerithium fueron los géneros con mayor incidencia en las cuatro localidades.

A Tank Bromeliad Favors Spider Presence in a Neotropical Inundated Forest.

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Yann Hénaut

Full Text Available Tank bromeliads are good models for understanding how climate change may affect biotic associations. We studied the relationships between spiders, the epiphytic tank bromeliad, Aechmea bracteata, and its associated ants in an inundated forest in Quintana Roo, Mexico, during a drought period while, exceptionally, this forest was dry and then during the flooding that followed. We compared spider abundance and diversity between 'Aechmea-areas' and 'control-areas' of the same surface area. We recorded six spider families: the Dipluridae, Ctenidae, Salticidae, Araneidae, Tetragnathidae and Linyphiidae among which the funnel-web tarantula, Ischnothele caudata, the only Dipluridae noted, was the most abundant. During the drought period, the spiders were more numerous in the Aechmea-areas than in the control-areas, but they were not obligatorily associated with the Aechmea. During the subsequent flooding, the spiders were concentrated in the A. bracteata patches, particularly those sheltering an ant colony. Also, a kind of specificity existed between certain spider taxa and ant species, but varied between the drought period and subsequent flooding. We conclude that climatic events modulate the relationship between A. bracteata patches and their associated fauna. Tank bromeliads, previously considered only for their ecological importance in supplying food and water during drought, may also be considered refuges for spiders during flooding. More generally, tank bromeliads have an important role in preserving non-specialized fauna in inundated forests.

A Tank Bromeliad Favors Spider Presence in a Neotropical Inundated Forest.

Science.gov (United States)

Hénaut, Yann; Corbara, Bruno; Pélozuelo, Laurent; Azémar, Frédéric; Céréghino, Régis; Herault, Bruno; Dejean, Alain

2014-01-01

Tank bromeliads are good models for understanding how climate change may affect biotic associations. We studied the relationships between spiders, the epiphytic tank bromeliad, Aechmea bracteata, and its associated ants in an inundated forest in Quintana Roo, Mexico, during a drought period while, exceptionally, this forest was dry and then during the flooding that followed. We compared spider abundance and diversity between 'Aechmea-areas' and 'control-areas' of the same surface area. We recorded six spider families: the Dipluridae, Ctenidae, Salticidae, Araneidae, Tetragnathidae and Linyphiidae among which the funnel-web tarantula, Ischnothele caudata, the only Dipluridae noted, was the most abundant. During the drought period, the spiders were more numerous in the Aechmea-areas than in the control-areas, but they were not obligatorily associated with the Aechmea. During the subsequent flooding, the spiders were concentrated in the A. bracteata patches, particularly those sheltering an ant colony. Also, a kind of specificity existed between certain spider taxa and ant species, but varied between the drought period and subsequent flooding. We conclude that climatic events modulate the relationship between A. bracteata patches and their associated fauna. Tank bromeliads, previously considered only for their ecological importance in supplying food and water during drought, may also be considered refuges for spiders during flooding. More generally, tank bromeliads have an important role in preserving non-specialized fauna in inundated forests.

[Prevalence of asthma and determination of symptoms as risk indicators].

Science.gov (United States)

Mancilla-Hernández, Eleazar; Medina-Ávalos, Miguel Alejandro; Barnica-Alvarado, Raúl Humberto; Soto-Candia, Diego; Guerrero-Venegas, Rosario; Zecua-Nájera, Yahvéh

2015-01-01

Asthma is a chronic inflammatory airway disease whose prevalence has increased, especially in developed countries; the results of studies of asthma prevalence vary in different populations and even within the same country; in Mexico we observed fluctuations in prevalence of asthma from 7% to 33%. To determine the prevalence of asthma and severity of symptoms as risk indicators in school population in cities in various states of Mexico. A descriptive study of detection of asthma prevalence and analytical-comparative observational study of determination of symptoms of asthma. The surveys were applied to preschool, elementary, middle and high school population, in the cities of Puebla, Puebla; Tulancingo, Hidalgo; Tlaxcala, Tlaxcala, and Cancún, Quintana Roo; new validated questionnaire was used as instrument: Asthma Diagnostic Questionnaire for Epidemiologic Studies, consisting of eight questions with summation value for diagnosis. 8,754 surveys showed a 14% prevalence in Puebla, 17% in Tulancingo, 7% in Tlaxcala, and 14% in Cancún; average in four cities surveyed was 13%; the strength of association with asthma symptoms in descending order with significant odds ratio were: recurrent wheezing, breathlessness, chest tightness, recurrent cough, cough cold, recurrent cold symptoms, predominantly nocturnal cough, cough that increases with exercise. The average prevalence of asthma in the surveyed cities was 13% and the main symptoms indicators of risk of asthma in school children were: recurrent wheezing, breathlessness, chest tightness and recurrent cough.

Wind speed forecasting in three different regions of Mexico, using a hybrid ARIMA-ANN model

Energy Technology Data Exchange (ETDEWEB)

Cadenas, Erasmo [Facultad de Ingenieria Mecanica, Universidad Michoacana de San Nicolas de Hidalgo, Santiago Tapia No. 403, Centro (Mexico); Rivera, Wilfrido [Centro de Ivestigacion en Energia, Universidad Nacional Autonoma de Mexico, Apartado Postal 34, Temixco 62580, Morelos (Mexico)

2010-12-15

In this paper the wind speed forecasting in the Isla de Cedros in Baja California, in the Cerro de la Virgen in Zacatecas and in Holbox in Quintana Roo is presented. The time series utilized are average hourly wind speed data obtained directly from the measurements realized in the different sites during about one month. In order to do wind speed forecasting Hybrid models consisting of Autoregressive Integrated Moving Average (ARIMA) models and Artificial Neural Network (ANN) models were developed. The ARIMA models were first used to do the wind speed forecasting of the time series and then with the obtained errors ANN were built taking into account the nonlinear tendencies that the ARIMA technique could not identify, reducing with this the final errors. Once the Hybrid models were developed 48 data out of sample for each one of the sites were used to do the wind speed forecasting and the results were compared with the ARIMA and the ANN models working separately. Statistical error measures such as the mean error (ME), the mean square error (MSE) and the mean absolute error (MAE) were calculated to compare the three methods. The results showed that the Hybrid models predict the wind velocities with a higher accuracy than the ARIMA and ANN models in the three examined sites. (author)

Morphological and physiological responses of seagrasses (Alismatales) to grazers (Testudines: Cheloniidae) and the role of these responses as grazing patch abandonment cues.

Science.gov (United States)

Lacey, Elizabeth A; Collado-Vides, Ligia; Fourqurean, James W

2014-12-01

Green sea turtles, Chelonia mydas, are grazers influencing the distribution of seagrass within shallow coastal ecosystems, yet the drivers behind C. mydas patch use within seagrass beds are largely unknown. Current theories center on food quality (nutrient content) as the plant responds to grazing disturbances; however, no study has monitored these parameters in a natural setting without grazer manipulation. To determine the morphological and physiological responses potentially influencing seagrass recovery from grazing disturbances, seagrasses were monitored for one year under three different grazing scenarios (turtle grazed, fish grazed and ungrazed) in a tropical ecosystem in Akumal Bay, Quintana Roo, Mexico. Significantly less soluble carbohydrates and increased nitrogen and phosphorus content in Thalassia testudinum were indicative of the stresses placed on seagrasses during herbivory. To determine if these physiological responses were the drivers of the heterogeneous grazing behavior by C. mydas recorded in Akumal Bay, patches were mapped and monitored over a six-month interval. The abandoned patches had the lowest standing crop rather than leaf nutrient or rhi- zome soluble carbohydrate content. This suggests a modified Giving Up Density (GUD) behavior: the critical threshold where cost of continued grazing does not provide minimum nutrients, therefore, new patches must be utilized, explains resource abandonment and mechanism behind C. mydas grazing. This study is the first to apply GUD theory, often applied in terrestrial literature, to explain marine herbivore grazing behavior.

Seroprevalence of antibodies against the excreted antigen superoxide dismutase by Trypanosoma cruzi in dogs from the Yucatan Peninsula (Mexico).

Science.gov (United States)

López-Cespedes, A; Longoni, S S; Sauri-Arceo, C H; Rodríguez-Vivas, R I; Villegas, N; Escobedo-Ortegón, J; Barrera-Pérez, M A; Sánchez-Moreno, M; Bolio González, M E; Marín, C

2013-06-01

Numerous studies have shown the role of dogs as a reservoir for the American trypanosomiasis, as the bridge connecting sylvatic and peridomestic cycles. The objective of this study was to determine the prevalence of American trypanosomiasis in the dog population (630 sera) from seven localities in the Yucatan Peninsula (city of Mérida and the towns of Molas, Playa del Carmen, Akumal, Xcalacoop, Xcalac and Xahuachol). These data are key for developing control measures for the disease. The sera were analysed to detect antibodies against Trypanosoma cruzi, using Fe-SOD excreted as the antigenic fraction by ELISA and Western blot as confirmation. The total prevalence found in the Yucatan Peninsula was some 14.76%, with 10.74% in the state of Yucatan (city of Mérida, towns of Molas and Xcalacoop) and 21.34% in the state of Quintana Roo (towns of Playa del Carmen, Akumal, Xcalac and Xahuachol). However, a more thorough epidemiological study of the dog population, both wild and urban, in the Yucatan Peninsula will be required to design a control strategy for these diseases, paying particular attention to the population affected and even broadening the study to other Mexican states as well as neighbouring countries. These results again confirm that iron-superoxide dismutase excreted by T. cruzi constitutes a good source of antigen for serodiagnosis in epidemiological studies. © 2012 Blackwell Verlag GmbH.

Impact ejecta and carbonate sequence in the eastern sector of the Chicxulub crater

Science.gov (United States)

Urrutia-Fucugauchi, Jaime; Chavez-Aguirre, Jose Maria; Pérez-Cruz, Ligia; De la Rosa, Jose Luis

2008-12-01

The Chicxulub 200 km diameter crater located in the Yucatan platform of the Gulf of Mexico formed 65 Myr ago and has since been covered by Tertiary post-impact carbonates. The sediment cover and absence of significant volcanic and tectonic activity in the carbonate platform have protected the crater from erosion and deformation, making Chicxulub the only large multi-ring crater in which ejecta is well preserved. Ejecta deposits have been studied by drilling/coring in the southern crater sector and at outcrops in Belize, Quintana Roo and Campeche; little information is available from other sectors. Here, we report on the drilling/coring of a section of ˜34 m of carbonate breccias at 250 m depth in the Valladolid area (120 km away from crater center), which are interpreted as Chicxulub proximal ejecta deposits. The Valladolid breccias correlate with the carbonate breccias cored in the Peto and Tekax boreholes to the south and at similar radial distance. This constitutes the first report of breccias in the eastern sector close to the crater rim. Thickness of the Valladolid breccias is less than that at the other sites, which may indicate erosion of the ejecta deposits before reestablishment of carbonate deposition. The region east of the crater rim appears different from regions to the south and west, characterized by high density and scattered distribution of sinkholes.

A Tank Bromeliad Favors Spider Presence in a Neotropical Inundated Forest

Science.gov (United States)

Hénaut, Yann; Corbara, Bruno; Pélozuelo, Laurent; Azémar, Frédéric; Céréghino, Régis; Herault, Bruno; Dejean, Alain

2014-01-01

Tank bromeliads are good models for understanding how climate change may affect biotic associations. We studied the relationships between spiders, the epiphytic tank bromeliad, Aechmea bracteata, and its associated ants in an inundated forest in Quintana Roo, Mexico, during a drought period while, exceptionally, this forest was dry and then during the flooding that followed. We compared spider abundance and diversity between ‘Aechmea-areas’ and ‘control-areas’ of the same surface area. We recorded six spider families: the Dipluridae, Ctenidae, Salticidae, Araneidae, Tetragnathidae and Linyphiidae among which the funnel-web tarantula, Ischnothele caudata, the only Dipluridae noted, was the most abundant. During the drought period, the spiders were more numerous in the Aechmea-areas than in the control-areas, but they were not obligatorily associated with the Aechmea. During the subsequent flooding, the spiders were concentrated in the A. bracteata patches, particularly those sheltering an ant colony. Also, a kind of specificity existed between certain spider taxa and ant species, but varied between the drought period and subsequent flooding. We conclude that climatic events modulate the relationship between A. bracteata patches and their associated fauna. Tank bromeliads, previously considered only for their ecological importance in supplying food and water during drought, may also be considered refuges for spiders during flooding. More generally, tank bromeliads have an important role in preserving non-specialized fauna in inundated forests. PMID:25494055

Water-Level Reconstruction and its Implications for Late Pleistocene Paleontological Site Formation in Hoyo Negro, a Submerged Subterranean Pit in Quintana Roo, Mexico

Science.gov (United States)

Rissolo, D.; Reinhardt, E. G.; Collins, S.; Kovacs, S. E.; Beddows, P. A.; Chatters, J. C.; Nava Blank, A.; Luna Erreguerena, P.

2014-12-01

A massive pit deep within the now submerged cave system of Sac Actun, located along the central east coast of the Yucatan Peninsula, contains a diverse fossil assemblage of extinct megafauna as well as a nearly complete human skeleton. The inundated site of Hoyo Negro presents a unique and promising opportunity for interdisciplinary Paleoamerican and paleoenvironmental research in the region. Investigations have thus far revealed a range of associated features and deposits which make possible a multi-proxy approach to identifying and reconstructing the natural and cultural processes that have formed and transformed the site over millennia. Understanding water-level fluctuations (both related to, and independent from, eustatic sea level changes), with respect to cave morphology is central to understanding the movement of humans and animals into and through the cave system. Recent and ongoing studies involve absolute dating of human, faunal, macrobotanical, and geological samples; taphonomic analyses; and a characterization of site hydrogeology and sedimentological facies, including microfossil assemblages and calcite raft deposits.

Modelo de indicadores para la evaluación y monitoreo del desarrollo sustentable en la zona costera de Mahahual, Quintana Roo, México

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Lourdes Castillo Villanueva

2016-01-01

Full Text Available La evaluación y el monitoreo del desarrollo sustentable de las zonas costeras son fundamentales para conocer los retos por enfrentar, así como para determinar las estrategias que deban implementarse para su atención. Se propone un marco conceptual y un modelo de indicadores para evaluar el desarrollo de una zona costera. Se generó el índice de desarrollo sustentable para Mahahual obteniendo un valor de 0,40, que representa un nivel bajo de sustentabilidad, lo que indica que se debe poner especial atención en minimizar los factores de presión que se están presentando específicamente en dos zonas de interacción. Entre los desafíos para la sustentabilidad de Mahahual se encuentra diseñar políticas públicas adecuadas a las condiciones de la región, aplicar correctamente los instrumentos normativos y de planeación del territorio, mejorar la calidad de vida de la comunidad, reducir el impacto de las actividades turísticas y ordenar las actividades y usos en el ambiente marino.

La confrontación social por el espacio costero: la configuración de paisajes turísticos en Puerto Morelos, Quintana Roo

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Erika Cruz Coria

2013-01-01

Full Text Available El Estado, en busca de integrar a Puerto Morelos a la "modernización", incitó la participación de distintos actores sociales, quienes al vislumbrar su potencial pesquero, pero sobre todo turístico, impondrían ciertas formas de aprovechamiento sobre los recursos naturales y en los espacios costeros, que serían pieza clave en las gananciaseconómicas derivadas de esta actividad. El objetivo del presente trabajo fue documentar el proceso de conformación de los paisajes turísticos configurados a lo largo de la costa, a partir de las confrontaciones entre los actores sociales durante el periodo de transición, que va de la crisis del modelo de sustitución de importaciones al neoliberal en el que este lugar, junto con sus recursos naturales, transitó de la apropiación estatal a la propiedad privada. Aquí se retomaron las aportaciones teórico metodológicas de diversos autores, que permitieron comprender las transformaciones del paisaje en el contexto de la confrontación social.

Planktonic Cyanobacteria of the tropical karstic lake Lagartos from the Yucatan Peninsula, Mexico Las cianobacterias planctónicas del lago tropical cárstico Lagartos de la Península de Yucatán, México

Directory of Open Access Journals (Sweden)

Francisco Valadez

2013-06-01

Full Text Available The tropical karstic lakes on the Mexican Caribbean Sea coast are numerous. However, there is an enormous gap of knowledge about their limnological conditions and micro-algae communities. In the present study, surface water samples were collected monthly from November 2007 to September 2008 to provide taxonomical composition and biovolume of planktonic cyanobacteria of the lake Lagartos from State of Quintana Roo, Mexico. Water temperature, pH, conductivity, salinity, soluble reactive phosphorus (SRP, dissolved inorganic nitrogen (DIN, and soluble reactive silica (SRSi levels were also analyzed. A total of 22 species were identified. Chroococcales and Oscillatoriales dominated the phytoplankton assemblages during the study period. Chroococcus pulcherrimus, Coelosphaerium confertum, Cyanodyction iac, Phormidium pachydermaticum and Planktolyngbya contorta were recorded for the first time in Mexico. A surplus of DIN (mean value of 42.7µM and low concentrations of SRP (mean value of 1.0µM promoted the enhanced growth and bloom formation of cyanobacteria. The mean biovolume was 3.22X10(8µm³/mL, and two biovolume peaks were observed; the first was dominated by Microcystis panniformis in November 2007 (7.40X10(8µm³/mL, and the second was dominated by Oscillatoria princeps in April 2008 (6.55X10(8µm³/mL. Water quality data, nitrates enrichment, and trophic state based on biovolume, indicated that Lagartos is a hyposaline, secondarily phosphorus-limited, and eutrophic lake, where the cyanobacteria flora was composed mainly by non-heterocystous groups.Los lagos cársticos tropicales en la costa del Caribe mexicano son numerosos. Sin embargo, existe un enorme desconocimiento acerca de sus condiciones limnológicas y de las comunidades de microalgas que se desarrollan en ellos. El objetivo del presente estudio fue estudiar las condiciones limnológicas en las que crecen las poblaciones de cianobacterias planctónicas del lago Lagartos, Quintana Roo

Polliniferous plants aud foraging strategles Of Apis mellifera (Hyínenoptera: Apidae in the Yucatán Peninsula, Mexico

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Rogel Villanueva-G

2002-12-01

Full Text Available A study of the most important polliniferous plants for European and Africanized honeybees (Apis mellifera L. was made in Quintana Roo state. Comparisons were made between the plants visited by both bee types in order to determine whether there were qualitative or quantitative differences in their choice of plant species. Also some foraging strategies of the honeybees were analysed. Pollen from pollen load samples was acetolysed and mounted on slides. Subsequently the polien grains were identified, counted and photographed. A total of 206 pollen load samples were collected at Palmas and St. Teresa during two years. The most frequent species in the ponen load samples from European and Africanized honeyhees were Cecropia peltata, Metopium brownei, Lonchocarpus sp. 2, Viguiera dentata, Eragrostis sp. 1, Bursera simaruba and Eupatorium albicaule. Both types of honey bees show a high reliance on pollen from only a few species, the first five named above comprised around 50% of all the mean percentage frequencies. Families that contributed with the largest number of polien species were Fabaceae, Asteraceac, Boraginaceae, Convolvulaecae, Euphorbiaceae, Sapindaceae, Poaceac, Myrtaceae, Sapotaceae and Tiliaceae. C. peltata, Trema micrantha, B. simaruba, Eugenia sp. 1, Thouinia canesceras, Pouteria sp. 1, Mimosa bahamensis and V. dentata, were the pollen species with the largest percentages of oceurrence in both European and Africanized bee pollen load samples, and also represent a "long-term" food resources during the year.Un estudio de las plantas poliníferas más importantes para las abejas europeas y africanizadas (Apis melifera L. se realizó en el estado de Quintana Roo. Se hicieron comparaciones entre plantas visitadas por ambos tipos de abejas, con el objetivo de determinar si hay diferencias cualitativas o cuantitativas en la elección de la especie de planta. Adicionalmente, se analizaron algunas estrategias de forrajeo de las abejas. Muestras

Värskete kontorite top

Index Scriptorium Estoniae

2007-01-01

"Ruum" valis välja kolm äsjavalminud paremat kontorit: Skype'i kontor, sisearhitekt Tarmo Piirmets, büroo Pink; ajaleht Sakala toimetus, sisearhitektid Liis Lindvere, Raili Paling, KOKO arhitektid; disainibüroo Velvet, sisearhitekt Taavi Aunre, sisearhitektuuribüroo Boom

"Neli arhitektuuri" : Eesti arhitektuurinäitusel Pariisis / Triin Ojari

Index Scriptorium Estoniae

Ojari, Triin, 1974-

2000-01-01

Baltimaade ja Rootsi arhitektuuribüroode töid tutvustav näitus galeriis La Galerie d'Architecture 22. X-10. XII 2000. Rootsist osales büroo White Arkitekter (arhitekt Mattias Lind), Lätist Arhis, Leedust Private Ideology, Eestist Kolm Pluss Üks (valiku tegi Karin Hallas). Kataloogi eessõna - läti arhitekt Janis Dripe. 2 ill. White Arkitekter (arhitektuuribüroo, Rootsi). Arhis (arhitektuuribüroo, Läti). Private Ideology (arhitektuuribüroo, Leedu)

Läti parimad majad / Karin Paulus

Index Scriptorium Estoniae

Paulus, Karin, 1975-

2006-01-01

Muljeid Läti arhitektuuriauhindade jagamiselt. Peapreemia: arhitektide Uldis Lukshevics'i ja Martins Oshans'i projekteeritud eramu. Parim avalik hoone: arhitektuuribüroo Kubs projekteeritud kontorihoone Riias. Suurim Baltikumis: arhitektuuribüroo Arhis projekteeritud Ljepaja politseihoone. Parim rekonstrueerimisprojekt: arhitektuuribüroo Arhis projekteeritud avatud kontor nõukogudeaegses tööstushoones. Parim interjöör: kohvik Vanilla (Ieva Dripe, Janis Broka) ja tekstiilipood Garage (Zaiga Gaile büroo). Uldis Lukshevics'i projekteeritud suvilad, mis paiknevad postidel

Puuduv raamat ruumis : Eesti Panga ühendusgalerii = The Missing Book : Bank of Estonia Gallery / Ingrid Ruudi

Index Scriptorium Estoniae

Ruudi, Ingrid

2005-01-01

Projekteerija: Arhitektuuribüroo Urban Mark. Autorid Ülar Mark, Kaja Pae, Kaiko Kivi. Konstruktor: Inseneribüroo Peipman. Eriosad: Eldeco Inseneribüroo. Pingi disainis Bruno Lillemets. Projekt 2003, valmis 2005. Ill.: korruse plaan, lõige, 3 välis- ja 3 sisevaadet

Análisis del impacto de la mortalidad por suicidios en México, 2000-2012

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Claudio Alberto Dávila Cervantes

2015-01-01

Full Text Available El objetivo del presente artículo es analizar la carga de la mortalidad por suicidios en México, a partir del indicador de años de vida perdidos (AVP, entre 2000 y 2012, por sexo, grupos de edad (para menores de 85 años de edad a nivel nacional y por entidad federativa. Se emplearon estadísticas vitales de mortalidad y estimaciones de población para calcular tasas estandarizadas de mortalidad y los años de vida perdidos por suicidios. Entre 2000 y 2012 se dio un incremento sostenido de la tasa de mortalidad por suicidios. En hombres, el grupo de edad con las mayores tasas fue el de 85 años y más; para mujeres el de 15-19 años. El mayor impacto en la esperanza de vida se dio entre los 20 y 24 años en hombres y entre los 15 y 19 años para mujeres. Los estados con la mayor mortalidad se ubican en la península de Yucatán (Yucatán, Quintana Roo y Campeche. La mortalidad por suicidio en México se ha incrementado de manera constante. Los suicidios son prevenibles, por lo que es fundamental implementar políticas públicas en salud a través de acciones de identificación oportuna, estrategias integrales de prevención y el estudio detallado de los factores de riesgo asociados.

Planktonic cyanobacteria of the tropical karstic lake Lagartos from the Yucatan Peninsula, Mexico.

Science.gov (United States)

Valadez, Francisco; Rosiles-González, Gabriela; Almazán-Becerril, Antonio; Merino-Ibarra, Martin

2013-06-01

The tropical karstic lakes on the Mexican Caribbean Sea coast are numerous. However, there is an enormous gap of knowledge about their limnological conditions and micro-algae communities. In the present study, surface water samples were collected monthly from November 2007 to September 2008 to provide taxonomical composition and biovolume of planktonic cyanobacteria of the lake Lagartos from State of Quintana Roo, Mexico. Water temperature, pH, conductivity, salinity, soluble reactive phosphorus (SRP), dissolved inorganic nitrogen (DIN), and soluble reactive silica (SRSi) levels were also analyzed. A total of 22 species were identified. Chroococcales and Oscillatoriales dominated the phytoplankton assemblages during the study period. Chroococcus pulcherrimus, Coelosphaerium confertum, Cyanodyction iac, Phormidium pachydermaticum and Planktolyngbya contorta were recorded for the first time in Mexico. A surplus of DIN (mean value of 42.7 microM) and low concentrations of SRP (mean value of 1.0 microM) promoted the enhanced growth and bloom formation of cyanobacteria. The mean biovolume was 3.22 x 10(8) microm3/mL, and two biovolume peaks were observed; the first was dominated by Microcystis panniformis in November 2007 (7.40 x 10(8) microm3/mL), and the second was dominated by Oscillatoriaprinceps in April 2008 (6.55 x 10(8) microm3/mL). Water quality data, nitrates enrichment, and trophic state based on biovolume, indicated that Lagartos is a hyposaline, secondarily phosphorus-limited, and eutrophic lake, where the cyanobacteria flora was composed mainly by non-heterocystous groups.

Educación sexual y género en primarias mexicanas ¿qué dicen los libros de texto y el profesorado?

Directory of Open Access Journals (Sweden)

Adriana Leona Rosales-Mendoza

2017-04-01

Full Text Available El objetivo de esta investigación fue revisar y analizar, desde la perspectiva de género, los contenidos de sexualidad y género incluidos en los libros de texto de Ciencias Naturales y Formación Cívica y Ética de cuarto, quinto y sexto grados de primaria del ciclo escolar 2015-2016 (ediciones 2014, para señalar los aciertos y deficiencias en cuanto a su abordaje. Además, indagamos sobre la formación profesional docente en sexualidad y género, para lo cual nos basamos en testimonios de cuatro entrevistas efectuadas al profesorado de primaria de los Estados del sureste mexicano de Quintana Roo y Yucatán: dos de quinto grado y dos de sexto. Los resultados muestran que los contenidos de los libros de texto reducen la sexualidad a la reproducción, y no incorporan el erotismo, el cual es considerado relevante en el enfoque de educación integral de la sexualidad. Asimismo, transmiten ideas heteronormativas sobre las vinculaciones afectivas, y no incorporan la perspectiva de género a cabalidad, ya que fracasan en denunciar la desigualdad entre hombres y mujeres. La formación de docentes es deficiente y hace evidente la operación del currículo oculto, pues se transmiten estereotipos y prejuicios de género y sexualidad.

The first educational interferometer in Mexico (FEYMANS): A novel project

Science.gov (United States)

Villicana Pedraza, Ilhuiyolitzin; Guesten, Rolf; Saucedo Morales, Julio Cesar; Carreto, Francisco; Valdes Estrada, Erik; Wendolyn Blanco Cardenas, Monica; Rodríguez Garza, Carolina B.; Pech Castillo, Gerardo A.; Ángel Vaquerizo, Juan

2016-07-01

An interferometer is composed of several radio telescopes (dishes) separated by a defined distance and used in synchrony. This kind of array produces a superior angular resolution, better than the resolution achieved by a single dish of the same combined area. In this work we propose the First Educational Youth Mexican Array North South, FEYMANS. It consists of an educational interferometer with initially four dishes. This array harvests Mexico's geography by locating each dish at the periphery of the country; creating new scientific links of provincial populations with the capital. The FEYMANS project focus in high school students and their projects on physics, chemistry and astronomy as a final project. Also, it can be used for bachelor theses. The initial and central dish-node is planed to be in Mexico City. After its construction, the efforts will focus to build subsequent nodes, on the Northwest region, Northeast, or Southeast. Region Northwest will give service to Baja California, Sonora and Chihuahua states. Region Northeast will cover Coahuila, Nuevo Leon and Tamaulipas. Finally, region Southeast will give access to Yucatan, Quintana Roo, Campeche, Tabasco and Chiapas. This project has been conceived by young professional astronomers and Mexican experts that will operate each node. Also, we have the technical support of the "Max Planck Institute fuer Radioastronomy in Bonn Germany" and the educational model of the "PARTNeR" project in Spain. This interferometer will be financed by Mexico's Federal Congress and by Mexico City's Legislative Assembly (ALDF).

Calcite raft geochemistry as a hydrological proxy for Holocene aquifer conditions in Hoyo Negro and Ich Balam (Sac Actun Cave System), Quintana Roo, Mexico

Science.gov (United States)

Kovacs, Shawn E.; Reinhardt, Eduard G.; Chatters, James C.; Rissolo, Dominique; Schwarcz, Henry P.; Collins, Shawn V.; Kim, Sang-Tae; Nava Blank, Alberto; Luna Erreguerena, Pilar

2017-11-01

Two cores from calcite rafts deposits located in Cenote Ich Balam and Hoyo Negro were dated and analyzed for 87Sr/86Sr, δ18O, δ13C, Sr/Ca and Cl/Ca. The geochemical records show changing aquifer salinity spanning the last ∼ 8.5 cal kyrs BP and interrelationships with Holocene climate trends (wet and dry periods). During the wet mid-Holocene, the salinity of the meteoric Water Mass (WM; at 7.8-8.3 cal kyrs BP) was relatively high at 1.5-2.7 ppt and then became less saline (1.0-1.5 ppt) during the last ∼ 7000 yrs as climate became progressively drier. High salinity of the meteoric WM during the wet mid-Holocene is attributed to increased turbulent mixing between the meteoric and underlying marine WM. Increased precipitation, in terms of amount, frequency, and intensity (e.g. hurricanes) causes higher flow of meteoric water towards the coast and mixing at the halocline, a phenomenon recorded with recent instrumental monitoring of the aquifer. Conversely, during dry periods reduced precipitation and flow in the meteoric WM would result in lower salinity. Karst properties and Holocene sea-level rise also seem to have an effect on the aquifer. When the regionally extensive network of shallow cave passages (∼ 10-12 m water depth) are flooded at ∼ 8000 cal yrs BP, there is a rapid shift in salinity. This study demonstrates that calcite raft deposits can be used as paleo-environmental recorders documenting the effects of sea level and climate change on aquifer condition.

Measuring surface energy and evapotranspiration across Caribbean mangrove forests

Science.gov (United States)

Lagomasino, D.; Fatoyinbo, T. E.; Price, R.

2014-12-01

Coastal mangroves lose large amounts of water through evapotranspiration (ET) that can be equivalent to the amount of annual rainfall in certain years. Satellite remote sensing has been used to estimate surface energy and ET variability in many forested ecosystems, yet has been widely overlooked in mangrove forests. Using a combination of long-term datasets (30-year) acquired from the NASA Landsat 5 and 7 satellite databases, the present study investigated ET and surface energy balance variability between two mangrove forest sites in the Caribbean: 1) Everglades National Park (ENP; Florida, USA) and 2) Sian Ka'an Biosphere Reserve (SKBR; Quintana Roo, Mexico). A satellite-derived surface energy balance model was used to estimate ET in tall and scrub mangroves environments at ENP and SKBR. Results identified significant differences in soil heat flux measurements and ET between the tall and scrub mangrove environments. Scrub mangroves exhibited the highest soil heat flux coincident with the lowest biophysical indices (i.e., Fractional Vegetation Cover, Normalized Difference Vegetation Index, and Soil-Adjusted Vegetation Index) and ET rates. Mangrove damage and mortality was observed on the satellite images following strong tropical storms and associated with anthropogenic modifications and resulted in low values in spectral vegetation indices, higher soil heat flux, and higher ET. Recovery of the spectral characteristics, soil heat flux and ET was within 1-2 years following hurricane disturbance while, degradation caused by human disturbance persisted for many years. Remotely sensed ET of mangrove forests can provide estimates over a few decades and provide us with some understanding of how these environments respond to disturbances to the landscape in periods where no ground data exists or in locations that are difficult to access. Moreover, relationships between energy and water balance components developed for the coastal mangroves of Florida and Mexico could be

Nõmme maja "Kergus" : Kerese tn., Tallinn / Ülar Mark, Kalle Komissarov

Index Scriptorium Estoniae

Mark, Ülar

1999-01-01

Kahekorruselise, tänavapoolse pika umbse seinaga eramu projekteeris Arhitektuuribüroo Mark & Tamm, arhitekt Ülar Mark, kaasautor Kalle Komissarov. Konstruktiivne osa: Randväli & Karema Inseneribüroo. Projekt 1997, hoone valmis 1999. Eramu tähenduse ümbermõtestamisest. 13 illustratsiooni: korruste plaanid, välisvaated, sisevaade.Mark & Tamm (arhitektibüroo)

Arhitektuuriuudised / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2006-01-01

Mario Garzaniti korrusmaja Brüsselis, Ryue Nishizawa kortermaja Tokyos, Hamburgi arhitektuuribüroo Blauraum loomingust, Michael P. Johnsoni eramu Phoenixis, jaapani arhitekti Kei'ichi Irie ja Power Unit Studio loodud monoliitbetoonist eramu Chita linnas, hollandi arhitektuuribüroo OMA loomingust, inglise büroo Peter Barber Architects lahendus Londoni ühe eeslinna kvartalile

Viron televisio- ja radiokeskus = Estonian National Broadcasting Building / Pentti Kareoja

Index Scriptorium Estoniae

Kareoja, Pentti

2008-01-01

Eesti Rahvusringhäälingu hoone arhitektuurikonkursi võitis Taani arhitektuuribüroo Nobel Arkitekter. Teise koha pälvis Soome arhitektuuribüroo Harris-Kjisik OY (arhitektid Trevor Harris, Taru Niskanen) töö "Mediatetris". Ergutuspreemia pälvis Pekka Lassila Arhitektuuribüroo (arhitektid Pekka Lassila, Janne Kantee, Annika Ritola, Tuomas Arnala) töö "Auteur"

Battery monitoring in Mexican hybrid power systems; Monitoreo de las baterias en sistemas de potencia hibridos Mexicanos

Energy Technology Data Exchange (ETDEWEB)

Flores, J. Roberto; Agredano, Jaime [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1997-12-31

Hybrid power systems for an autonomous power supply are based on different renewable and fossil energy sources. They are considered as a good option for the power supply of remote areas. In these systems an energy storage is a vital necessity and very often this storage will consist of batteries which are generally connected in series and parallel arrays, or both. In Mexico as in other countries, the most extensively use batteries used for this application are the stationary and electric car type deep cycle batteries. However the experience with them in these systems is generally not very good. One way to overcome this problem is to maintain a regular monitoring of installing monitoring equipment, in order to make preventive actions before a developing fault can have serious consequences and in this manner increase the practical lifetime of the batteries. Unfortunately, battery monitoring is not easy task because most of the hybrid power systems are installed in remote areas which makes it difficult and expensive. In Mexico it has been not possible to maintain a regular monitoring of all hybrid power systems installed, due to the high cost of this work and the lack of founds. The hybrid power systems installed in the state of Quintana Roo are the only systems that have been continuously monitored since their installation. This paper gives an overview of the hybrid power systems installed in Mexico, focusing in the battery banks, the way they are being monitored, the main parameters used to detect possible premature problems and the method used to evaluate the battery bank conditions. Finally some results from the battery banks monitoring activities are presented. [Espanol] Los sistemas de potencia hibridos para un suministro autonomo de energia a regiones remotas, estan basados en diferentes fuentes de energia fosiles y renovables. Estos son considerados como una buena opcion para el suministro de energia a areas remotas. En estos sistemas es una necesidad vital el

Battery monitoring in Mexican hybrid power systems; Monitoreo de las baterias en sistemas de potencia hibridos Mexicanos

Energy Technology Data Exchange (ETDEWEB)

Flores, J Roberto; Agredano, Jaime [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

1998-12-31

Hybrid power systems for an autonomous power supply are based on different renewable and fossil energy sources. They are considered as a good option for the power supply of remote areas. In these systems an energy storage is a vital necessity and very often this storage will consist of batteries which are generally connected in series and parallel arrays, or both. In Mexico as in other countries, the most extensively use batteries used for this application are the stationary and electric car type deep cycle batteries. However the experience with them in these systems is generally not very good. One way to overcome this problem is to maintain a regular monitoring of installing monitoring equipment, in order to make preventive actions before a developing fault can have serious consequences and in this manner increase the practical lifetime of the batteries. Unfortunately, battery monitoring is not easy task because most of the hybrid power systems are installed in remote areas which makes it difficult and expensive. In Mexico it has been not possible to maintain a regular monitoring of all hybrid power systems installed, due to the high cost of this work and the lack of founds. The hybrid power systems installed in the state of Quintana Roo are the only systems that have been continuously monitored since their installation. This paper gives an overview of the hybrid power systems installed in Mexico, focusing in the battery banks, the way they are being monitored, the main parameters used to detect possible premature problems and the method used to evaluate the battery bank conditions. Finally some results from the battery banks monitoring activities are presented. [Espanol] Los sistemas de potencia hibridos para un suministro autonomo de energia a regiones remotas, estan basados en diferentes fuentes de energia fosiles y renovables. Estos son considerados como una buena opcion para el suministro de energia a areas remotas. En estos sistemas es una necesidad vital el

Seewald - kaunis koht Kunstiakadeemiale / Karin Hallas-Murula

Index Scriptorium Estoniae

Hallas-Murula, Karin, 1957-

2005-01-01

Seewaldi haiglakompleksi ajaloost. Maa-ala planeerimise konkursist. Osalesid arhitektuuribürood Koot ja Koot, QP arhitektid, Lokomotiiv, Urban Mark ning Andres Põime büroo Studio 3. Konkursi võitis büroo Lokomotiv (Jüri Martson, Rasmus Reinolt, Ivo-Martin Veelma). Eripreemiaga märgiti ära arhitektuuribüroo Urban Mark (autor Ülar Mark) võistlustöö

Arhitektuuriuudised / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2007-01-01

Soome arhitekti Sami Rintala park Lõuna-Koreas Anyang'is ja hotell Põhja-Norras Kirkenes. Prantsuse arhitekti Edouard Francois' sotsiaalmaja Normandia väikelinnas Louviers'is. Kopenhaagenis ehitati silotornid ümber korterelamuteks (Hollandi arhitektuuribüroo MVRDV koos Taani büroo JJW Arkitekteriga). Energiasäästlik büroohoone Hollandis (büroo RAU). Johnston Marklee & Associatesi projekteeritud eramu Los Angelese lähedal

Análisis de la calidad del servicio a través del modelo factorial: restaurantes de la localidad de Calderitas, estado de Quintana Roo

Directory of Open Access Journals (Sweden)

Ma. de Jesús Pérez Hervert

2016-03-01

Full Text Available El objetivo del presente trabajo es abordar El presente trabajo es resultado de la investigación realizada entre los comensales de los restaurantes de la localidad de Calderitas, y tiene como objetivo analizar el nivel de calidad del servicio que proporcionan los restaurantes a los clientes que acuden a consumir alimentos, por lo que se presenta un análisis de la calidad del servicio de los clientes que visitan los restaurantes de dicha localidad. Para cumplir con dicho objetivo se realiza tanto un análisis univariado (descriptivo como multivariado (inferencial de las variables que tienen alguna injerencia sobre la calidad del servicio, tales como: edad, sexo, residencia actual, actitudes, decoración, precio de los platillos, imagen interior, imagen exterior, atención prestada, rapidez del servicio, entre otras variables.

Ehitaja Aastaehitised 2003 on selgunud

Index Scriptorium Estoniae

2004-01-01

Aastaehitised 2003: uusehitis - Laulasmaa SPA & Konverentsihotell (arhitekt Priit Ehala, AB Ehala & Irik, projekteerija Projektbüroo Teinos, ehitaja FKSM), renoveeritud ehitis - korterelamu Tallinnas Piiskopi t. 2 (arhitekt Elmo Raukas, sisearhitekt Heli Eensalu, projektterija ja ehitaja Restor), rajatis - Turu sild Tartus (arhitektuurne lahendus: Tartu Arhitektuuribüroo, vantsüsteemide arvutused: Ehituse & Tarkvara Inseneribüroo), eramu - Merirahu eramu (arhitekt Tarmo Piirmets, projekteerija Estkonsult, ehitaja E-Betoonelement). 4 ill

Kosmosesüstiku ehitus / Juhan Muttika

Index Scriptorium Estoniae

Muttika, Juhan

2004-01-01

Tallinna Sakala Keskuse rekonstrueerimisprojektidest - Londoni büroo Burrows Cave Internationali (Richard Cave, John Burrows, Ian Little) ja Eesti büroo Arhitektuuriagentuuri projektist. Eesti arhitektide kommentaare

Cafe Lyon = Cafe Lyon / Andres Labi

Index Scriptorium Estoniae

Labi, Andres, 1977-

2013-01-01

Cafe Lyon (Meistri 22, Tallinn) sisekujundusest. Autorid: Janno Roos, Andres Labi, Kristel Jakobson (Ruumilabor). Prantsuse Lütseumi direktori Lauri Leesi arvamus. Disainibüroo Ruumilabor lühitutvustus

2012 ja 2013 - aastad täis põnevaid Euroopa noorte projekte / Maali Pert

Index Scriptorium Estoniae

Pert, Maali

2013-01-01

2012. aastal toetas SA Archimedes Euroopa Noored Eesti büroo programmi Euroopa Noored vahenditest 159 noorte projekti. Vestlusest büroo avalike suhete ja teavitusvaldkonna koordinaatori Marit Valgega

Especies de dinoflagelados del género Gambierdiscus (Dinophyceae del Mar Caribe mexicano

Directory of Open Access Journals (Sweden)

D.U Hernández-Becerril

2004-09-01

Full Text Available Algunos dinoflagelados de hábitos bénticos están relacionados con la ciguatera, por consumo de pescado, en áreas tropicales. En el Caribe mexicano la ciguatera es un padecimiento relativamente común, sin embargo solo existe un trabajo sobre este tema y muy pocos antecedentes publicados sobre fitoplancton y microalgas bénticas. En este estudio se analizó material recolectado en varios puntos a lo largo de las costas del Estado de Quintana Roo, tanto con red de fitoplancton (54 mm, como de sedimento y epífitas de plantas macroscópicas, para estudiar los dinoflagelados tóxicos y asociados. Se registra la presencia de tres especies del género Gambierdiscus, asociadas con la producción de toxinas causantes de la ciguatera: G. belizeanus, G. toxicus y G. yasumotoi, todas distribuídas en áreas costeras poco profundas, incluyendo lagunas costeras. Las especies han sido estudiadas con microscopía de luz y electrónica de barrido. Para el reconocimiento de las especies se emplearon los caracteres morfológicos usuales, pero eventualmente se pueden usar caracteres fisiológicos, ecológicos y moleculares. La llamada "comunidad ciguatoxigénica" también está formada por especies de los géneros Prorocentrum, Ostreopsis y Coolia, cuyo estudio florístico y taxonómico se recomienda ampliamente, así como investigaciones complementarias de aspectos biológicos, ecológicos, fisiológicos y epidemiológicos de esta comunidad

Mapa de erosión de los suelos de México y posibles implicaciones en el almacenamiento de carbono orgánico del suelo

Directory of Open Access Journals (Sweden)

Martín A. Bolaños González

2016-07-01

Full Text Available Debido a la poca disponibilidad de información a nivel mundial y de manera acentuada en México del fenómeno de erosión de suelos; en este trabajo se presenta el Mapa Nacional de Erosión escala 1:50 000, el cual consolida un esfuerzo realizado por varios años en los que fue necesario conjuntar diversas fuentes de información para que mediante técnicas de fotointerpretación de imágenes de satélite de alta resolución, cartografía especializada e información de campo se concretara este producto, mismo que representa la información básica requerida para que, en el futuro, sea posible estimar de manera general las pérdidas de carbono orgánico del suelo debidas a éste fenómeno, dado que es uno de los componentes menos estudiados y, por consiguiente, menos cuantificados en el balance general de este elemento. Así, este primer resultado muestra que el 76% de la superficie nacional tiene algún grado de afectación por erosión hídrica, que corresponde a 6.79% con un grado de erosión extrema, el 5.79% fuerte, 26.37% moderada y 37.06% leve. Los estados más afectados por erosión apreciable (superficie relativa son: Distrito Federal, Tlaxcala, Estado de México y Michoacán y, por el contrario, los menos afectados: Tabasco, Quintana Roo y Campeche.

Meiosis en mutantes desinápticos con restitución cromosómica en Rhoeo spathacea (Commelinaceae

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Armando García-Velázquez

2008-10-01

Full Text Available El estudio se llevó a cabo en recolectas de Rhoeo spathacea realizadas en Veracruz, Chiapas, Tabasco, Yucatán, Quintana Roo y Michoacán, México. Las plantas presentaron número diploide de cromosomas (2n=12 en mitosis. En meiosis los individuos formaron anillo y/o cadenas en metafase I, con excepción de varios mutantes desinápticos-RSD (separación de cromosomas apareados. En meiosis de Rhoeo no se observan bivalentes ni hay posibilidades de entrecruzamiento, y consecuentemente no habrá quiasmas ya que no hay cuatro cromátidas de las cuales dos deberían ser no-hermanas. Sin embargo, en anafase I hay disyunción altamente regular 6:6 que se presentan como "anillos o donas" con los brazos cortos hacia el interior de esas figuras. De la autofecundación de un mutante desináptico-RSD (GAVA 1.1 se obtuvo una progenie F2 de 123 individuos: 90 diploides-formadores de anillos y 1 acrotrisómico (2n=13. Esto es, 91 individuos "revirtieron" el comportamiento y 29 fueron diploandróginos tetraploides desinápticos (2n=24 y 3 hipertetraploides (2n=25 desinápticos. Este comportamiento diferente entre hermanos confirma que Rhoeo es dicarión: los diploides- con anillo tendrán el subgenoma A, y los tetraploides el B, que incluyen cromatidas hermanas en la restitución en segunda división (2n.

SiBiFor: Forest Biometric System for forest management in Mexico

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Benedicto Vargas-Larreta

2017-01-01

Full Text Available Introducción: Los sistemas biométricos forestales constituyen las herramientas analíticas más utilizadas para el análisis de la producción y el crecimiento de los bosques. Objetivo: Presentar un nuevo sistema biométrico para los bosques templados y tropicales de México. Materiales y métodos: El área de estudio comprendió los estados de Chihuahua, Guerrero, Jalisco, Oaxaca, Michoacán, Puebla, Estado de México, Hidalgo, Tlaxcala, Veracruz y Quintana Roo. La toma de datos de campo se realizó mediante muestreo destructivo y no destructivo en cada Unidad de Manejo Forestal Regional (UMAFOR en los estados. La metodología utilizada permitió generar sistemas de ecuaciones para la estimación de atributos de árboles individuales que son aditivos entre componentes, escalables a nivel de árbol completo y consistentes a lo largo de las diversas condiciones forestales del país. Resultados y discusión: El Sistema Biométrico Forestal "SiBiFor" está integrado por más de 6000 nuevas ecuaciones para 97 especies arbóreas de los bosques templados y tropicales. SiBiFor contiene 2 917 ecuaciones de volumen, 2868 de ahusamiento-volumen, 341 de índice de sitio y 288 de crecimiento en diámetro. Conclusión: Las ecuaciones desarrolladas mejorarán el manejo de los ecosistemas forestales del país lo que contribuirá a la sustentabilidad de los mismos.

El Estado y la política de los polos turísticos de desarrollo: el caso de Cancún, México

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Octavio Castillo Pavón

2014-12-01

Full Text Available RESUMEN A cuarenta años de su creación, el polo de desarrollo turístico de Cancún no sólo es el paradigma del éxito económico del turismo, como base de la actividad productiva de la Riviera Maya y del estado de Quintana Roo en su conjunto, sino que es la muestra más clara del impacto que este tipo de actividades, desarticuladas de la realidad económica y social de las regiones en las que se enclavan, tienen en las condiciones de segregación socio-espacial de centros de población cuyo origen está en el impulso de políticas públicas dirigidas, fundamentalmente, a crear nuevas condiciones de acumulación por encima de las necesidades sociales de la población. El presente documento ubica la experiencia de los polos de desarrollo turístico, impulsados en México a partir de la década de los años 70 del siglo pasado, en el marco de las manifestaciones socio-económicas, culturales y, particularmente, espaciales registradas en el país en el último tercio del siglo XX. En particular se analiza el proceso de creación y surgimiento de la ciudad de Cancún como Polo de Desarrollo Turístico Integralmente Planeado, haciendo énfasis en las principales características de su proceso de urbanización y en los resultados socio-territoriales de su creación.

Effect of trapping methods on the estimation of alpha diversity of a phlebotomine sandfly assemblage in southern Mexico.

Science.gov (United States)

Rodríguez-Rojas, J J; Rebollar-Téllez, E A

2017-12-01

The aims of the study were to (a) investigate the effect of trapping methods on alpha diversity; and (b) enhance the knowledge of the sandfly assemblage in the state of Quintana Roo. Field work was undertaken in a tropical forest of southern Mexico from August 2013 to July 2014. Sampling was conducted monthly during three consecutive nights. For each trapping night, 12 different types of trap were operated from 18.00 to 24.00 hours in four transects. Measures of alpha community diversity were based on the quantification of the number of species (Chao 2, Jackknife 2, Clench's equation, Margalef's index) and the community structure, as well as the dominance (Simpson and Berger-Parker indexes) and evenness (Shannon's entropy index, true diversity of the Jost and Pielou index). With a total sampling effort of 1728 night-traps, 16 101 phlebotomine sandflies were collected; they represented two genera and 13 species. Diversity estimates of 100% (Chao 2 and Clench's equation) and 85% (Jackknife 2) of potential species in the study area were calculated. Shannon traps and CDC light traps indicated the largest number of species, but only Shannon traps showed the greatest abundance. This inventory of sandflies is an important activity to enhance our knowledge of sandfly assemblages and guilds. The ultimate goal of studying alpha diversity in sandflies would be to have a better understanding of the population dynamics and all complex networks of interactions that may, in turn, be associated with the epidemiology of the disease. © 2017 The Royal Entomological Society.

Coralline reefs classification in Banco Chinchorro, Mexico

Science.gov (United States)

Contreras-Silva, Ameris I.; López-Caloca, Alejandra A.

2009-09-01

The coralline reefs in Banco Chinchorro, Mexico, are part of the great reef belt of the western Atlantic. This reef complex is formed by an extensive coralline structure with great biological richness and diversity of species. These colonies are considered highly valuable ecologically, economically, socially and culturally, and they also inherently provide biological services. Fishing and scuba diving have been the main economic activities in this area for decades. However, in recent years, there has been a bleaching process and a decrease of the coral colonies in Quintana Roo, Mexico. This drop is caused mainly by the production activities performed in the oil platforms and the presence of hurricanes among other climatic events. The deterioration of the reef system can be analyzed synoptically using remote sensing. Thanks to this type of analysis, it is possible to have updated information of the reef conditions. In this paper, satellite imagery in Landsat TM and SPOT 5 is applied in the coralline reefs classification in the 1980- 2006 time period. Thus, an integral analysis of the optical components of the water surrounding the coralline reefs, such as on phytoplankton, sediments, yellow substance and even on the same water adjacent to the coral colonies, is performed. The use of a texture algorithm (Markov Random Field) was a key tool for their identification. This algorithm, does not limit itself to image segmentation, but also works on edge detection. In future work the multitemporal analysis of the results will determine the deterioration degree of these habitats and the conservation status of the coralline areas.

Groundwater geochemistry of Isla de Mona, Puerto Rico

Science.gov (United States)

Wicks, C.M.; Troester, J.W.

1998-01-01

In this study, we explore the differences between the hydrogeochemical processes observed in a setting that is open to input from the land surface and in a setting that is closed with respect to input from the land surface. The closed setting was a water-filled passage in a cave. Samples of groundwater and of a solid that appeared to be suspended in the relatively fresh region of saline-freshwater mixing zone were collected. The solid was determined to be aragonite. Based on the analyses of the composition and saturation state of the groundwater, the mixing of fresh and saline water and precipitation of aragonite are the controlling geochemical processes in this mixing zone. We found no evidence of sulfate reduction. Thus, this mixing zone is similar to that observed in Caleta Xel Ha, Quintana Roo, also a system that is closed with respect to input from the land surface. The open setting was an unconfined aquifer underlying the coastal plain along which four hand-dug wells are located. Two wells are at the downgradient ends of inferred flowpaths and one is along a flowpath. The composition of the groundwater in the downgradient wells is sulfide-rich and brackish. In contrast, at the well located along a flow line, the groundwater is oxygenated and brackish. All groundwater is oversaturated with respect to calcite, aragonite, and dolomite. The composition is attributed to mixing of fresh and saline groundwater, CO2 outgassing, and sulfate reduction. This mixing zone is geochemically similar to that observed in blue holes and cenotes.

Planktonic Cyanobacteria of the tropical karstic lake Lagartos from the Yucatan Peninsula, Mexico

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Francisco Valadez

2013-06-01

Full Text Available The tropical karstic lakes on the Mexican Caribbean Sea coast are numerous. However, there is an enormous gap of knowledge about their limnological conditions and micro-algae communities. In the present study, surface water samples were collected monthly from November 2007 to September 2008 to provide taxonomical composition and biovolume of planktonic cyanobacteria of the lake Lagartos from State of Quintana Roo, Mexico. Water temperature, pH, conductivity, salinity, soluble reactive phosphorus (SRP, dissolved inorganic nitrogen (DIN, and soluble reactive silica (SRSi levels were also analyzed. A total of 22 species were identified. Chroococcales and Oscillatoriales dominated the phytoplankton assemblages during the study period. Chroococcus pulcherrimus, Coelosphaerium confertum, Cyanodyction iac, Phormidium pachydermaticum and Planktolyngbya contorta were recorded for the first time in Mexico. A surplus of DIN (mean value of 42.7µM and low concentrations of SRP (mean value of 1.0µM promoted the enhanced growth and bloom formation of cyanobacteria. The mean biovolume was 3.22X10(8µm³/mL, and two biovolume peaks were observed; the first was dominated by Microcystis panniformis in November 2007 (7.40X10(8µm³/mL, and the second was dominated by Oscillatoria princeps in April 2008 (6.55X10(8µm³/mL. Water quality data, nitrates enrichment, and trophic state based on biovolume, indicated that Lagartos is a hyposaline, secondarily phosphorus-limited, and eutrophic lake, where the cyanobacteria flora was composed mainly by non-heterocystous groups.

ABOVE AND BELOW GROUND INTERACTIONS IN THE AGROFORESTAL ASSOCIATION 'RED CEDAR-PERSIAN LIME-CHAYA'

Directory of Open Access Journals (Sweden)

Jesús Mao Estanislao Aguilar-Luna

2011-05-01

Full Text Available Above and below ground interactions were analyzed in the agroforestal association 'red cedar-Persian lime-chaya', to know the initial optimum planting density (PD, in Quintana Roo, Mexico. Red cedar and Persian lime were placed in a 'Nelder' circle of 3154 m2 which consisted of 20 concentric circles alternating red cedars and Persian limes to 1.50 m apart and 10 plants per circle; chaya rectangular frame was set at 1.50 x 3.00 m, superimposed on the 'Nelder' circle. Defined eight PD 2602 to 3772 pl·ha-1 with 10 repetitions, to evaluate the length of main root (LMR, radical exploration range (RER, below ground interaction (BGI, plant height (PH, crown diameter (CD, above ground interaction (AGI and soil fertility (SF. The growth intraspecific he present statistical difference (P≤0.05 when moving from one PD to another PD, while the growth interespecific manifested different growth habit. The agroforestal association propitious in soil decreased phosphorous ±2 %, and increases organic matter ±14 % and nitrogen ±10 % on all PD. The BGI was increased in direct relation with the PD, reaching its highest value (64±5.8 % to 3772 pl·ha-1; the AGI also increased in direct relation with the PD, its highest value (52±3.1 % went to 3772 pl·ha-1; therefore, to higher PD increased BGI and AGI, at 20 months after planting.

Wannabe - Ameerika ja Postkontor 2 / Karin Paulus

Index Scriptorium Estoniae

Paulus, Karin, 1975-

2008-01-01

Uued hotellid Tallinna kesklinnas: Kaksiktornid (arhitektuuribüroo Nord Projekt, Meeli Truu, sisekujundaja Meelis Press); Forumi hotell (arhitektuuribüroo Pluss, Indrek Allmann, sisekujundajad Kaire Kemp-Tishler ja Ea Andla)

Tühjast tihedusest : Liivaoja elamukvartal Kadriorus = Empty Density : Liivaoja Residential Area in Kadriorg, Tallinn / Tuuli Köller

Index Scriptorium Estoniae

Köller, Tuuli

2007-01-01

Planeering: K-Projekt. Arhitektid: Emil Urbeli Arhitektibüroo, M. Pressi Arhitektuuribüroo. Pikemalt majadevahelisse ruumi sisse programmeeritud tegevusetusest. Projekt: 2005, valmis: 2006-2007. 6 värv. vaadet

Rutiinivabad reklaamikatlad : jänkudest, kaladest, lauajalgpallist ja golfist rääkimata / Maris Takk

Index Scriptorium Estoniae

Takk, Maris

2009-01-01

Reklaamibüroo Tank kontorist endise Baltika õmblustsehhi ruumides (sisearhitekt Tiina Teng-Tamme). Reklaamibüroo Age McCann bürooruumidest Rotermanni kvartali Jahulaos (arhitekt Tomomi Hayashi, sisearhitekt Kerli Lepp)

TI blasts government over KNAB / Kate McIntosh

Index Scriptorium Estoniae

McIntosh, Kate

2009-01-01

Rahvusvaheline korruptsioonivastane organisatsioon Transparency International soovib, et Läti korruptsioonivastane büroo saaks kiiresti uue juhi. Samas on organisatsioon mures, et korruptsioonivastase büroo juhi määrab valitsus

Kalvitis suspends anti-corruption chief over alleged misuse of funds / Talis Saule Archdeacon

Index Scriptorium Estoniae

Archdeacon, Talis Saule

2007-01-01

Läti peaminister Aigars Kalvitis algatas uurimise korruptsioonitõrjebüroo direktori Aleksejs Loskutovsi suhtes. Riigikontroll avastas rikkumisi büroo raamatupidamises. Süüdistust on nimetatud ka poliitiliseks rünnakuks

Software for statistical data analysis used in Higgs searches

International Nuclear Information System (INIS)

Gumpert, Christian; Moneta, Lorenzo; Cranmer, Kyle; Kreiss, Sven; Verkerke, Wouter

2014-01-01

The analysis and interpretation of data collected by the Large Hadron Collider (LHC) requires advanced statistical tools in order to quantify the agreement between observation and theoretical models. RooStats is a project providing a statistical framework for data analysis with the focus on discoveries, confidence intervals and combination of different measurements in both Bayesian and frequentist approaches. It employs the RooFit data modelling language where mathematical concepts such as variables, (probability density) functions and integrals are represented as C++ objects. RooStats and RooFit rely on the persistency technology of the ROOT framework. The usage of a common data format enables the concept of digital publishing of complicated likelihood functions. The statistical tools have been developed in close collaboration with the LHC experiments to ensure their applicability to real-life use cases. Numerous physics results have been produced using the RooStats tools, with the discovery of the Higgs boson by the ATLAS and CMS experiments being certainly the most popular among them. We will discuss tools currently used by LHC experiments to set exclusion limits, to derive confidence intervals and to estimate discovery significances based on frequentist statistics and the asymptotic behaviour of likelihood functions. Furthermore, new developments in RooStats and performance optimisation necessary to cope with complex models depending on more than 1000 variables will be reviewed

Valge villa / Ilmar Heinsoo

Index Scriptorium Estoniae

Heinsoo, Ilmar, 1951-

1999-01-01

Eramu liigendus, ruumikujundus ja tehnilised näitajad. Villa projekteerija Arhitekti- ja inseneribüroo ARX OÜ, arhitekt Ilmar Heinsoo. Sisearhitektibüroo Lember & Padar, sisearhitekt Juta Lember. Kommenteerib Anneliis Aunapuu. 11 illustratsiooni

Interview with Karli Luik from Salto / intervjueerinud Eero Epner

Index Scriptorium Estoniae

Luik, Karli, 1977-

2011-01-01

2004. a. loodud arhitektuuribüroost Salto. Büroo kavandatud hoonete arhitektuurist, selle omapärast, ühiskondlike hoonete suurest osakaalust, arvestamisest keskkonnaga, Eesti varasema arhitektuuri mõjust, büroo hetkeseisust ja tulevikuplaanidest

Maja on sündmus = A House is an Event / Tõnu Laigu

Index Scriptorium Estoniae

Laigu, Tõnu

2002-01-01

Tallinnas Nõmmel 2002. a. valminud elamu projekteeris büroo QP Arhitektid. Arhitekt Tõnu Laigu, sisearhitekt Mari Kurismaa. Projekt 2001. 6 ill.: põhiplaan, välis- ja sisevaated.QP Arhitektid (büroo).

Drakon-terminal sdelajet aeroport Pekina samõm bolshim na Zemlje

Index Scriptorium Estoniae

2005-01-01

Pekingisse rajatavast lennujaama terminalist. Kavandas briti arhitektuuribüroo Foster and Partners. Projekti tutvustab arhitekt Norman Foster. Projektiga töötasid ka hollandi planeerijad NACO B.U ja ameerika inseneribüroo ARUP

Arhitektuuriuudised / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2007-01-01

Jackson Clements Borrowsi projekteeritud eramu Melbourne'is. Dominic Stevensi eramu Iirimaal. Büroo Soeters Van Eldonki kortermajad Amsterdamis. Le Corbusier' visandatud kirik Prantsusmaal Firminy-Vert'is. Ameerika arhitektuuribüroo Morphosis projekteeritud Phare Tower Pariisis

Läti Rahvusliku Kunstimuuseumi hoone uuendamisest / Margit Mutso

Index Scriptorium Estoniae

Mutso, Margit, 1966-

2010-01-01

Läti Rahvusliku Kunstimuuseumi (saksa arhitekt Wilhelm Neumann) rekonstrueerimise ja laienduse rahvusvahelisest avalikust arhitektuurivõistlusest. 1. koha pälvinud Leedu arhitektuuribüroo Processoffice ja 2. koha saanud Eesti arhitektuuribüroo Salto lahendustest

La señalización como determinante de la satisfacción del turista español en un territorio: el caso de Quintana Roo

Directory of Open Access Journals (Sweden)

Rafael Fabricio Matos Cámara

2014-01-01

Full Text Available Se investiga la satisfacción experimentada por el turista que es determinada por las señales que los diferentes agentes en un territorio envían al mercado. Se utiliza el método de ecuaciones estructurales. Los resultados obtenidos muestran que la reputación, el precio, la calidad percibida, los activos específicos y la preservación del medioambiente son determinantes de la satisfacción; al contrario que la publicidad, la cual no ha sido corroborada. Se comentan las implicaciones profesionales y se señalan algunas posibles líneas de investigación futura.

KNAB decries "systematic" corruption in city council

Index Scriptorium Estoniae

2008-01-01

Läti korruptsioonitõrjebüroo kahtlustab Riia linnaametnikke altkäemaksu võtmises. Korruptsioonitõrjebüroo töötajad ning president kutsuvad poliitikuid üles võitlema korruptsiooniga ning ettevõtjaid informatsiooni andma

Tuletõrjehoone Põltsamaal = Fire Station in Põltsamaa / Raivo Puusepp

Index Scriptorium Estoniae

Puusepp, Raivo

2000-01-01

Projekteerija: Arhitektibüroo Reiss & Reinula. Eskiisprojekt: Arhitektibüroo Raivo Puusepp. Arhitektid Raivo Puusepp, Krista Väärtnõu, Peeter Loo. Projekt 1999, hoone valmis 2000. 10 ill. Korruste plaanid, ristlõiked, välisvaated

Vennalik maja = A Brotherly House / Liina Jänes

Index Scriptorium Estoniae

Jänes, Liina, 1977-

2002-01-01

2001. a. Tallinnas Pirita teel valminud eramu projekteeris Arhitektibüroo Emil Urbel. Arhitektid Emil Urbel ja Indrek Erm, sisearhitekt Taso Mähar. Konstruktsioonid: E-Inseneribüroo. 5 ill.: korruste plaanid, sisevaade, välisvaated

Modernne kastmaja Nõmmel / Ene Läkk

Index Scriptorium Estoniae

Läkk, Ene, 1957-

1999-01-01

Projekteerija: arhitektuuribüroo Mark & Tamm. Konstruktiivne osa: inseneribüroo Randväli Karema. Arhitektid Ülar Mark, Kalle Komissarov. Kahekorruseline maja Vabaduse pst. ääres on mahutatud puude vahele kitsale alale. Kommenteerib Ü. Mark.

Bastion Skoone skoro stanet mestom otdõha gorozhan / Urmas Tooming

Index Scriptorium Estoniae

Tooming, Urmas

2007-01-01

Tallinna Skoone bastioni ajaloost ja plaanist rajada sinna suvekohvikutega puhkeala ning talvel liuväli. Ala arendamise ideekonkursi võitis arhitektuuribüroo Salto töö "Glassii". Detailplaneeringu eskiis valmis arhitektuuribüroos Ruum ja Maastik

77 FR 21846 - Reserve Requirements of Depository Institutions: Reserves Simplification

Science.gov (United States)

2012-04-12

... Requirements of Depository Institutions: Reserves Simplification AGENCY: Board of Governors of the Federal Reserve System. ACTION: Final rule. SUMMARY: The Board is amending Regulation D, Reserve Requirements of Depository Institutions, to simplify the administration of reserve requirements. The final rule creates a...

Briti parim maja on Peckhami raamatukogu / Ingrid Lillemägi

Index Scriptorium Estoniae

Lillemägi, Ingrid

2000-01-01

2000. a. James Stirlingi auhinna said arhitektid William Alsop ja Jan Störmer (Peckhami raamatukogu), keskkondlikkuse auhinna sai büroo Chetwood & Associates (Sainsbury's supermarket), Stephen Lawrence'i auhinna büroo Softroom Architects (praamiootepaviljon). 1 ill

Narva Joaoru puhkeala ja rannahoone = Narva Joaoru Recreational Area and Beach House / Kalle Vellevoog

Index Scriptorium Estoniae

Vellevoog, Kalle, 1963-

2016-01-01

Narva Joaoru puhkeala ja rannahoone. Arhitektid Kalle Vellevoog, Martin Prommik, Andrus Andrejev (Arhitektuuribüroo JVR), Tiiu Truus (Stuudio Truus). Konstruktsioon Ahti Lääne, Jürgen Einpaul (inseneribüroo EstKonsult). Eesti Arhitekide Liidu aastapreemia nominent 2016

Vmesto akvaparka v portu pojavjatsja dva ofisnõh zdanija / Urmas Seaver

Index Scriptorium Estoniae

Seaver, Urmas, 1973-

2008-01-01

Tallinnasse Admiraliteedi basseini äärde kerkivad lubatud veepargi asemele kaks äri- ja büroohoonet. Arhitektuurikonkursi võitis Salto Arhitektuuribüroo ja Urmas Lõokese Arhitektuuribüroo eskiisprojekt. Kommenteerivad arhitektid Karli Luik ja Endrik Mänd

Elamu Silgu tänaval Tallinnas = Dwelling on Silgu Street in Tallinn / Ülar Mark, Indrek Tiigi

Index Scriptorium Estoniae

Mark, Ülar

2003-01-01

Klaasmaja projekteerija: Arhitektuuribüroo Urban Mark. Arhitektid Ülar Mark ja Indrek Tiigi. Konstruktor: Inseneribüroo Peipman OÜ. Sisekujundaja Raina Lillepõld (OÜ Boxes). Projekt 2002, valmis 2004. 4 välis- ja 3 sisevaadet, põhiplaan

Kollaaž Linnahalliga : harjutusi hilissotsialismi süvaõppega riikidele / Andres Kurg

Index Scriptorium Estoniae

Kurg, Andres, 1975-

2000-01-01

Tallinna Linnahalli võimalikust tulevikust. Österledi sihtasutuse tellimisel tehtud rootsi arhitekti Gert Wingardhi ja tema büroo (Winghardh-Sandell-Sandberg HB) ning arhitektuuribüroo Arkitektbyrõn AB (ka ümbritseva maa-ala planeering) Linnahalli renoveerimise projektidest.

Detailed disc assembly temperature prediction: comparison between CFD and simplified engineering methods

CSIR Research Space (South Africa)

Snedden, Glen C

2003-09-01

Full Text Available Institute of Aeronautics and Astronautics Inc. All rights reserved. DETAILED DISC ASSEMBLY TEMPERATURE PREDICTION: COMPARISON BETWEEN CFD AND SIMPLIFIED ENGINEERING METHODS ISABE-2005-1130 Glen Snedden, Thomas Roos and Kavendra Naidoo CSIR, Defencetek... transfer and conduction code (Gaugler, 1978) Taw Adiabatic Wall Temperature y+ Near wall Reynolds number Introduction In order to calculate life degradation of gas turbine disc assemblies, it is necessary to model the transient thermal and mechanical...

Restoran Kaerajaan = Kaerajaan Restaurant

Index Scriptorium Estoniae

2009-01-01

Tallinnas Raekoja plats 17 asuva restorani Kaerajaan sisekujundusest. Sisearhitektid Andres Labi ja Janno Roos, nende tähtsamate tööde loetelu. Sisekujunduses on laene eesti rahvakunstist. 2. korruse lage ja seinu kaunistavad disainibüroo Loovvool loodud mustrid

Kamikaze pubi = Kamikaze pub / Madis Eek

Index Scriptorium Estoniae

Eek, Madis, 1966-

2001-01-01

Tallinnas Sõstra t. 2 asuva kõrtsi projekteeris Arhitektuuribüroo Eek & Mutso. Arhitektid Madis Eek, Reio Avaste. Konstruktsioonid: Projektibüroo Talone. Projekt 2000, hoone valmis 2001. 7 ill.: I korruse plaan, lõige, välis- ja sisevaated

Arhitektuuriuudised / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2007-01-01

Eramu Jaapanis (arh. büroo TNA Arhitektid) ja Itaalias (arh. Massimo Curzi). Elektrijaama territooriumi ümberplaneerimine Soomes Hanasaaris. Berliini Spandau linnaossa rajatud lasteaed "Pipi paradiis" (arh. büroo Baupiloten). Restoran Inglismaal Littlehamptoni rannikul (arh. Thomas Heatherwick ja Jane Wood)

Kes tahab elada raudtee ääres? : kortermajad Õie tn. 2 Nõmmel = WhoWants to Live Next to the Railway? : apartment buildings Õie St. 2 in Nõmme / Piret Lindpere

Index Scriptorium Estoniae

Lindpere, Piret, 1963-

2005-01-01

Kolm viie korteriga kolmekorruselist korterelamut. Projekteerija: Arhitektuuribüroo Pluss. Autor Indrek Allmann. Konstruktsioonid: E-Inseneribüroo. Detailplaneering: Koot & Koot. Projekt: 2003, valmis: 2005. Ill.: katusekorruse ja tüüpkorruse plaan, 5 värv. välisvaadet

Eramu Suurupis = A House in Suurupi / Tiina Mang

Index Scriptorium Estoniae

Mang, Tiina

2002-01-01

2002. a. valminud eramu projekteeris Arhitektibüroo Emil Urbel. Arhitektid Emil Urbel ja Indrek Erm, sisearhitekt Tiina Mang, konstruktor Peep Rosenberg. Projekt 2000-2001. 7 ill.: I korruse plaan, sise- ja välisvaated.Emil Urbel (arhitektibüroo).

Kino Kosmos Imax restaureerimine = Restoration of the Kino Kosmos as an Imax cinema / Pille Lausmäe

Index Scriptorium Estoniae

Lausmäe, Pille, 1958-

2015-01-01

Kino Kosmos Imax Tallinnas Pärnu mnt 45, hoone valminud 1964, restaureeritud 2014. Hoone arhitekt Ilmar Laasi, restaureerimisprojekt Urmas Lõokese Arhitektibüroo, sisearhitektid Kerli Lepp, Pille Lausmäe (Pille Lausmäe Sisearhitektuuribüroo). 2014. aasta Kultuurkapitali Arhitektuuripreemia kandidaat

Kas Mustjõe kasvab linnaks? / Tõnu Laigu

Index Scriptorium Estoniae

Laigu, Tõnu

2002-01-01

Tallinna Mustjõe asumi korterelamu ja puhkeala ruumilise planeerimise ideevõistlusest. Preemiad: I - Ott Kadarik, Villem Tomiste, Mihkel Tüür (büroo Kosmos), II - Margit Mutso (büroo Eek & Mutso), III - Veronika Valk, ostupreemia - Sverre Laanjärv, Ivar Lubjak

Status of fossil fuel reserves; Etat des reserves des combustibles fossiles

Energy Technology Data Exchange (ETDEWEB)

Laherrere, J

2005-07-01

Reserves represent the sum of past and future productions up to the end of production. In most countries the reserve data of fields are confidential. Therefore, fossil fuel reserves are badly known because the published data are more political than technical and many countries make a confusion between resources and reserves. The cumulated production of fossil fuels represents only between a third and a fifth of the ultimate reserves. The production peak will take place between 2020 and 2050. In the ultimate reserves, which extrapolate the past, the fossil fuels represent three thirds of the overall energy. This document analyses the uncertainties linked with fossil fuel reserves: reliability of published data, modeling of future production, comparison with other energy sources, energy consumption forecasts, reserves/production ratio, exploitation of non-conventional hydrocarbons (tar sands, extra-heavy oils, bituminous shales, coal gas, gas shales, methane in overpressure aquifers, methane hydrates), technology impacts, prices impact, and reserves growth. (J.S.)

Effects of heat treatment by immersion in household conditions on olive oil as compared to other culinary oils: a descriptive study

Directory of Open Access Journals (Sweden)

Carlos A. Nogueira-de-Almeida

2018-04-01

Full Text Available The objectives were to evaluate the properties of refined (ROO and extra-virgin olive oil (EVOO in their natural state (fresh and after heating, while comparing them with each other and with refined soybean (SBO and refined sunflower seed oil (SFO. The methodology was designed to simulate, in controlled laboratory conditions, the home-frying process, while evaluating fatty acid profile (fatty acid methyl esters were separated by gas chromatography, concentration of phenolic compounds (Gallic acid dosage, antioxidant activity (DPPH, and production of polar compounds (thin layer chromatography before and after heating to 200 oC for six minutes. It was observed that, before and after heating, SBO and SFO are rich in polyunsaturated fatty acids (FA and ROO and EVOO are rich in monounsaturated FA. Fresh or heated, ROO and EVOO do not have trans FA, which are present in SBO and SFO, and increase in SBO after heating (+ 32.8%. The concentrations of phenolic compounds are always higher in olive oils, despite the decrease that occurs after heating (-7.5% in the ROO and -24.6% in EVOO. Antioxidant activity is greater when olive oils are fresh and remains present in EVOO after heating. The concentration of polar compounds was similar for all oils after heating. In conclusion, ROO and EVOO are the richest in monounsaturated FA even after heating, with no production of saturated or trans FA. Despite losing some antioxidant activity, heated EVOO remains richer in monounsaturated FA than ROO, SBO and SFO in the fresh version. All oils suffer similar rates of degradation.

Jyväskylä transpordikeskus = Jyväskylä Travel Centre

Index Scriptorium Estoniae

2004-01-01

Jyväskylä transpordikeskuse Hannikaiseni tänaval projekteerisid Arhitektibüroo Harris-Kjisik (kaubajaam, parklahoone) ja Arhitektibüroo Petri Rouhiainen (reisiterminal). Autorid Trevor Harris, Hennu Kjisik, Petri Rouhiainen, Jukka Ollikainen, Kaija Eerikäinen. Asendiplaan, 4 välis- ja 3 sisevaadet

Loskutovs' fate still in the balance

Index Scriptorium Estoniae

2007-01-01

Läti seimi õiguskomisjoni juht Mareks Seglins ütles ajakirjanikele, et valitsusel polnud piisavalt andmeid otsustamaks korruptsioonitõrje büroo juhi Loskutovsi vallandamise üle. Peaminister Aigars Kalvitis tõrjus peaprokuratuuri protesti seoses korruptsioonitõrje büroo juhi Aleksejs Loskutovsi ametist vabastamisega

Taju vormiv arhitektuur / Eva Castro, Holger Kehne ; interv. Inga Raukas

Index Scriptorium Estoniae

Castro, Eva

2002-01-01

Londoni arhitektuuribüroo Plasma Studio arhitektid Eva Castro (s. 1969 Argentiinas) ja Holger Kehne (s. 1970 Saksamaal) räägivad oma tööst ja arhitektuurist. Loetletud büroo tähtsamad arhitektuuriauhinnad ja projektid. Osalesid 5. Põhja- ja Baltimaade arhitektuuritriennaalil

Kolmikpointi reklaam häirib vaimulikke / Enn Uus

Index Scriptorium Estoniae

Uus, Enn

2001-01-01

Radiolinja Kolmikpointi mobiiltelefoni sooduspaketi reklaam vannist vastu vaatava neiu ja kahe noormehega häirib kirikuringkondi vaimuliku ametiriietuse kasutamise ja perekonnaväärtuste labastamise tõttu. Kampaania autor on reklaamibüroo Zoom. Reklaamibüroo töötaja Kaur Hansoni kommentaar

Järve Keskus : Tallinn, Pärnu mnt. 236 = Järve Centre : 236 Pärnu Rd., Tallinn / Jaak Huimerind

Index Scriptorium Estoniae

Huimerind, Jaak, 1957-

2003-01-01

Projekteerija: Arhitektuuribüroo Studio Paralleel. Arhitektid Jaak Huimerind, Indrek Saarepera. Kaastöötajad Kristi Põldme, Indrek Laos, Reet Viigipuu. Avalike ruumide sisekujundus: Mari Kurismaa. Konstruktiivne osa: E-Inseneribüroo. Projekt 2000-2002, valmis 2002. Asendi-, I ja II korruse plaan, 6 vaadet

Annus päikeselist Austraaliat / Jarmo Kauge

Index Scriptorium Estoniae

Kauge, Jarmo

2008-01-01

Austraalia viimaste aastate elamuarhitektuuri ülevaade ja Anne Lassi kureeritud Ernst Kesa (1910-1994) loomingu näitus Eesti Arhitektuurimuuseumis kuni 28. IX. 1966. a. tõusis Ernst Kesa Austraalia arhitektuuribüroo osanikuks, büroo nimeks sai Perrott, Lyon, Timlock & Kesa (PLTK)

Sadamasse lubatud veepargi asemele kerkivad hoopis äri- ja büroohooned / Urmas Seaver

Index Scriptorium Estoniae

Seaver, Urmas, 1973-

2008-01-01

Salto Arhitektuuribüroo ja Urmas Lõokese Arhitektuuribüroo nägemus Tallinnas Admiraliteedi basseini ääres olevast Ahtri 3 kinnistust, kuhu tuleb kaks õhust kulgevate sildadega ühendatud äri- ja büroohoonet. Kommenteerivad Karli Luik ja Endrik Mänd

77 FR 66361 - Reserve Requirements of Depository Institutions: Reserves Simplification

Science.gov (United States)

2012-11-05

... Requirements of Depository Institutions: Reserves Simplification AGENCY: Board of Governors of the Federal... (Reserve Requirements of Depository Institutions) published in the Federal Register on April 12, 2012. The... simplifications related to the administration of reserve requirements: 1. Create a common two-week maintenance...

Foreign Exchange Reserves and the Reserve Bank’s Balance Sheet

OpenAIRE

Christian Vallence

2012-01-01

The Reserve Bank of Australia holds and manages the nation’s foreign exchange reserve assets in order to meet its policy objectives. While Australia’s foreign exchange reserves are relatively modest by international standards, they nonetheless constitute a sizeable portion of the Bank’s balance sheet, and variations in the Australian dollar value of these reserves are usually the most volatile component of the Bank’s profit and loss statement. This article discusses some of the key decisions ...

Kunst Pärnu jõel

Index Scriptorium Estoniae

2014-01-01

Eesti Arhitektide Liidu, Pärnu Uue Kunsti Muuseumi ja Pärnu linnavalitsuse korraldatud rahvusvaheline arhitektuurivõistlus Läänemere kunstipargi loomiseks Pärnu Suursilla kõrvale. Võitis töö märgusõnaga "KGAMMP", mille autoriks on Poola arhitektuuribüroo WXCA sp z.o.o. Teise preemia pälvis võistlustöö "A Welcoming Fortification" Londoni arhitektuuribüroo Stanton Williams arhitektide töö ja kolmanda preemia pälvis töö nimega "Tuututama"Hispaania arhitektuuribüroo Acha Zaballa Arquitectos Scp ja Bilbao Architecture Team Spl. arhitektide töö.

Balancing shifting cultivation and forest conservation: lessons from a "sustainable landscape" in southeastern Mexico.

Science.gov (United States)

Dalle, Sarah Paule; Pulido, María T; de Blois, Sylvie

2011-07-01

Shifting cultivation is often perceived to be a threat to forests, but it is also central to the culture and livelihoods of millions of people worldwide. Balancing agriculture and forest conservation requires knowledge of how agricultural land uses evolve in landscapes with forest conservation initiatives. Based on a case study from Quintana Roo, Mexico, and remote sensing data, we investigated land use and land cover change (LUCC) in relation to accessibility (from main settlement and road) in search of evidence for agricultural expansion and/or intensification after the initiation of a community forestry program in 1986. Intensification was through a shortening of the fallow period. Defining the sampling space as a function of human needs and accessibility to agricultural resources was critical to ensure a user-centered perspective of the landscape. The composition of the accessible landscape changed substantially between 1976 and 1997. Over the 21-year period studied, the local population saw the accessible landscape transformed from a heterogeneous array of different successional stages including mature forests to a landscape dominated by young fallows. We detected a dynamic characterized by intensification of shifting cultivation in the most accessible areas with milpas being felled more and more from young fallows in spite of a preference for felling secondary forests. We argue that the resulting landscape provides a poorer resource base for sustaining agricultural livelihoods and discuss ways in which agricultural change could be better addressed through participatory land use planning. Balancing agricultural production and forest conservation will become even more important in a context of intense negotiations for carbon credits, an emerging market that is likely to drive future land changes worldwide.

Using msa-2b as a molecular marker for genotyping Mexican isolates of Babesia bovis.

Science.gov (United States)

Genis, Alma D; Perez, Jocelin; Mosqueda, Juan J; Alvarez, Antonio; Camacho, Minerva; Muñoz, Maria de Lourdes; Rojas, Carmen; Figueroa, Julio V

2009-12-01

Variable merozoite surface antigens of Babesia bovis are exposed glycoproteins having a role in erythrocyte invasion. Members of this gene family include msa-1 and msa-2 (msa-2c, msa-2a(1), msa-2a(2) and msa-2b). To determine the sequence variation among B. bovis Mexican isolates using msa-2b as a genetic marker, PCR amplicons corresponding to msa-2b were cloned and plasmids carrying the corresponding inserts were purified and sequenced. Comparative analysis of nucleotide and deduced amino acid sequences revealed distinct degrees of variability and identity among the coding gene sequences obtained from 16 geographically different Mexican B. bovis isolates and a reference strain. Clustal-W multiple alignments of the MSA-2b deduced amino acid sequences performed with the 17 B. bovis Mexican isolates, revealed the identification of three genotypes with a distinct set each of amino acid residues present at the variable region: Genotype I represented by the MO7 strain (in vitro culture-derived from the Mexico isolate) as well as RAD, Chiapas-1, Tabasco and Veracruz-3 isolates; Genotype II, represented by the Jalisco, Mexico and Veracruz-2 isolates; and Genotype III comprising the sequences from most of the isolates studied, Tamaulipas-1, Chiapas-2, Guerrero-1, Nayarit, Quintana Roo, Nuevo Leon, Tamaulipas-2, Yucatan and Guerrero-2. Moreover, these three genotypes could be discriminated against each other by using a PCR-RFLP approach. The results suggest that occurrence of indels within the variable region of msa-2b sequences can be useful markers for identifying a particular genotype present in field populations of B. bovis isolated from infected cattle in Mexico.

In vitro cultivation of Cymatocarpus solearis (Brachycoeliidae) metacercariae to obtain the adult stage without the marine turtle definitive host.

Science.gov (United States)

Grano-Maldonado, Mayra; Alvarez-Cadena, José

2010-03-01

In vitro cultivation of trematodes would assist studies on the basic biology of the parasites and their hosts. This is the first study to use the yolk of unfertilized chicken eggs as a simple and successful method of ovocultivation and the first time to obtain the adult-stage of the trematode Cymatocarpus solearis Braun, 1899 (Digenea: Brachycoeliidae). Chicken eggs were inoculated with metacercariae from the muscle of the spiny lobster, Panulirus argus (Latreille, 1804). The metacercariae were excysted and incubated for 576 hr (24 days) at 38 to obtain the adult stage. Eggs in utero were normal in shape and light brown color. The metacercariae developed into mature parasites that have been identified as the adult-stage found in marine turtles. The adult lobsters collected in Quintana Roo State, Mexico, showed the prevalence of 49.4% and the mean intensity of 26.0 per host (n = 87). A statistical study was performed to determine that no parasitic preference was detected for male versus female parasitized lobsters. Morphometric measurements of the adult-stage of C. solearis obtained in our study have been deposited in the National Helminths Collection of the Institute of Biology of the National Autonomous University of Mexico. This study is significant because it is the first time that a digenean of the family Brachycoeliidae has been demonstrated to develop in vitro from metacercariae into adults capable of producing eggs using the yolk of unfertilized chicken eggs. Secondly, this technique allows to obtain the adult stage of C. solearis without the presence of its marine turtle host, allows us to describe the mature parasites, and thus contribute to our understanding of the biology of C. solearis.

Oral and cloacal microflora of wild crocodiles Crocodylus acutus and C. moreletii in the Mexican Caribbean.

Science.gov (United States)

Charruau, Pierre; Pérez-Flores, Jonathan; Pérez-Juárez, José G; Cedeño-Vázquez, J Rogelio; Rosas-Carmona, Rebeca

2012-02-17

Bacterial cultures and chemical analyses were performed from cloacal and oral swabs taken from 43 American crocodiles Crocodylus acutus and 28 Morelet's crocodiles C. moreletii captured in Quintana Roo State, Mexico. We recovered 47 bacterial species (28 genera and 14 families) from all samples with 51.1% of these belonging to the family Enterobacteriaceae. Fourteen species (29.8%) were detected in both crocodile species and 18 (38.3%) and 15 (31.9%) species were only detected in American and Morelet's crocodiles, respectively. We recovered 35 bacterial species from all oral samples, of which 9 (25.8%) were detected in both crocodile species. From all cloacal samples, we recovered 21 bacterial species, of which 8 (38.1%) were detected in both crocodile species. The most commonly isolated bacteria in cloacal samples were Aeromonas hydrophila and Escherichia coli, whereas in oral samples the most common bacteria were A. hydrophila and Arcanobacterium pyogenes. The bacteria isolated represent a potential threat to crocodile health during conditions of stress and a threat to human health through crocodile bites, crocodile meat consumption or carrying out activities in crocodile habitat. We especially warn about the presence of Salmonella arizonae and S. typhi, which cause enteritis and septicemia in crocodiles and salmonellosis and typhoid fever in humans. The risk of bacterial contamination from crocodiles to humans could increase in the future because of the accelerated destruction of crocodile habitat, which could lead to an augmentation of human-crocodile interactions. Information on bacterial diversity reported here could help in the choice of antibacterial products in case of infections that are of crocodile origin.

Additive diversity partitioning of fish in a Caribbean coral reef undergoing shift transition.

Science.gov (United States)

Acosta-González, Gilberto; Rodríguez-Zaragoza, Fabián A; Hernández-Landa, Roberto C; Arias-González, Jesús E

2013-01-01

Shift transitions in dominance on coral reefs from hard coral cover to fleshy macroalgae are having negative effects on Caribbean coral reef communities. Data on spatiotemporal changes in biodiversity during these modifications are important for decision support for coral reef biodiversity protection. The main objective of this study is to detect the spatiotemporal patterns of coral reef fish diversity during this transition using additive diversity-partitioning analysis. We examined α, β and γ fish diversity from 2000 to 2010, during which time a shift transition occurred at Mahahual Reef, located in Quintana Roo, Mexico. Data on coral reef fish and benthic communities were obtained from 12 transects per geomorphological unit (GU) in two GUs (reef slope and terrace) over six years (2000, 2005, 2006, 2007, 2008, 2010). Spatial analysis within and between the GUs indicated that the γ-diversity was primarily related to higher β-diversity. Throughout the six study years, there were losses of α, β and γ-diversity associated spatially with the shallow (reef slope) and deeper (reef terrace) GUs and temporally with the transition in cover from mound corals to fleshy macroalgae and boulder corals. Despite a drastic reduction in the number of species over time, β-diversity continues to be the highest component of γ-diversity. The shift transition had a negative effect on α, β and γ-diversity, primarily by impacting rare species, leading a group of small and less vulnerable fish species to become common and an important group of rare species to become locally extinct. The maintenance of fish heterogeneity (β-diversity) over time may imply the abetment of vulnerability in the face of local and global changes.

Estimación de la Propensión Marginal al Consumo del visitante de cruceros en Cozumel

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María De Jesús Moo Canul

2016-01-01

Full Text Available El objetivo de este trabajo fue analizar la Propensión Marginal al Consumo (PMC de los visitantes que arriban a Cozumel vía cruceros. La isla es considerada el principal puerto de cruceros en el Caribe Mexicano. Las teorías económicas aportan elementos teóricos para este trabajo, la PMC se analiza mediante: renta disponible y consumo, a través de una relación en la que una renta reducida conlleva a que la PMC en el destino sea menor y viceversa. El presente artículo se realizó con base en un trabajo de escritorio con la revisión de información documental, en este sentido, en la metodología se toman como referentes los indicadores que reporta la Secretaría de Turismo del estado de Quintana Roo, una revisión bibliográfica y consulta de revistas especializadas sobre navieras, como la Guía Berlitz. Para realizar la estimación de la PMC, se analizó el gasto promedio, derrama económica y perfil de la renta estimada de los visitantes de cruceros, a través de la caracterización que hace la Guía Berlitz. Se observó que la PMC del visitante que arriba vía cruceros en el destino se encuentra limitada por su renta estimada. Antes esto, es necesario que se valide si continúan con la estrategia de posicionamiento que tiene el destino, debido a que la PMC es baja y por ende la derrama económica que deja es limitada.

Additive diversity partitioning of fish in a Caribbean coral reef undergoing shift transition.

Directory of Open Access Journals (Sweden)

Gilberto Acosta-González

Full Text Available Shift transitions in dominance on coral reefs from hard coral cover to fleshy macroalgae are having negative effects on Caribbean coral reef communities. Data on spatiotemporal changes in biodiversity during these modifications are important for decision support for coral reef biodiversity protection. The main objective of this study is to detect the spatiotemporal patterns of coral reef fish diversity during this transition using additive diversity-partitioning analysis. We examined α, β and γ fish diversity from 2000 to 2010, during which time a shift transition occurred at Mahahual Reef, located in Quintana Roo, Mexico. Data on coral reef fish and benthic communities were obtained from 12 transects per geomorphological unit (GU in two GUs (reef slope and terrace over six years (2000, 2005, 2006, 2007, 2008, 2010. Spatial analysis within and between the GUs indicated that the γ-diversity was primarily related to higher β-diversity. Throughout the six study years, there were losses of α, β and γ-diversity associated spatially with the shallow (reef slope and deeper (reef terrace GUs and temporally with the transition in cover from mound corals to fleshy macroalgae and boulder corals. Despite a drastic reduction in the number of species over time, β-diversity continues to be the highest component of γ-diversity. The shift transition had a negative effect on α, β and γ-diversity, primarily by impacting rare species, leading a group of small and less vulnerable fish species to become common and an important group of rare species to become locally extinct. The maintenance of fish heterogeneity (β-diversity over time may imply the abetment of vulnerability in the face of local and global changes.

Comunidades de la mesofauna edáfica en una selva baja inundable de la Reseva de la Biósfera de Sian Kaan, Quintana Roo, México

OpenAIRE

Dania Prieto Trueba; Ma. Magdalena Vázquez González; Carlos Rodríguez Aragonés

1999-01-01

The flood lowland forest is a typical ecosystem of the Sian Kaan Biosphere in southeast Mexico. Two soil dwelling microarthropod samples were taken from areas with different topographies, one in the dry season (March 1995) and one in the rainy season (July 1995). In the rainy season, mean density was three times higher. Numerically, the Oribatid mites predominate, followed by Collembola and Pauropoda, regardless of the season or location. In March, the communities are concentrated in the soil...

Comunidades de la mesofauna edáfica en una selva baja inundable de la Reseva de la Biósfera de Sian Kaan, Quintana Roo, México

Directory of Open Access Journals (Sweden)

Dania Prieto Trueba

1999-09-01

Full Text Available The flood lowland forest is a typical ecosystem of the Sian Kaan Biosphere in southeast Mexico. Two soil dwelling microarthropod samples were taken from areas with different topographies, one in the dry season (March 1995 and one in the rainy season (July 1995. In the rainy season, mean density was three times higher. Numerically, the Oribatid mites predominate, followed by Collembola and Pauropoda, regardless of the season or location. In March, the communities are concentrated in the soil, while the July sample showed a migration to the leaf litter. There was no significant seasonal difference in densities. The proportion Acarida: Collembola and the value of the Green Agregation Index for Collembola shows the marked effect of dry soils for this group.

Replacing reserve requirements

OpenAIRE

Edward J. Stevens

1993-01-01

An examination of the fading significance of the Federal Reserve System's reserve requirements and the recent flowering of required clearing balances, a rapidly growing feature of Reserve Bank operations.

Linn liigub sadamale vastu : büroohoone Jõe tn. 4A, Tallinn = The City Advances Towards the Port : Office Building, Jõe Street 4A, Tallinn / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2006-01-01

Transgroup Invest AS-i peahoone ja parkimismaja. Projekteerija: Urmas Lõokese Arhitektuuribüroo OÜ. Arhitekt Urmas Lõoke. Sisekujundaja: Pille Lausmäe Sisearhitektuuribüroo OÜ. Ehitaja: Merko Ehitus AS. Projekt: 2005, valmis: 2006. Ill.: I ja V korruse plaan, 3 värv. välisvaadet

Õigusabi vähekindlustatuile / Mari Kasela ; kommenteerinud Maire Arm

Index Scriptorium Estoniae

Kasela, Mari

2011-01-01

Tasuta õigusabi majandus- ja makseraskustesse sattunud peredele pakub Eesti Juristide Liidu õigusportaal, esmase õigusabi teenust pakuvad Eesti Juristide Liit, sihtasutus Õigusteenuste Büroo Tallinnas, Üliõpilaste Õigusbüroo Tallinnas, Eesti Advokatuuri ja Lastekaitse Liidu koostööprojekt "Hea nõu lastega peredele"

Kino Kosmos Imax = Kosmos Imax cinema / Pille Lausmäe ; kommenteerinud Karen Jagodin

Index Scriptorium Estoniae

Lausmäe, Pille, 1958-

2015-01-01

Kino Kosmos Imax Tallinnas Pärnu mnt 45. 1964. aastal valminud hoone arhitekt Ilmar Laasi. Renoveeritud interjööri autorid Pille Lausmäe, Kerli Lepp (Pille Lausmäe Sisearhitektuuri büroo). Projekti autorid Urmas Lõoke, Riina Poopuu (Urmas Lõokese Arhitektibüroo)

RULES OF ORIGIN AND AUTOMOTIVE SECTOR IN JAPAN’S ECONOMIC PARTNERSHIP AGREEMENTS

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Hanny Zurina HAMZAH

2010-01-01

Full Text Available This paper examines complicated Rules of Origin (RoO in Japan’s Economic Partnership Agreements (EPA with East Asian countries. To limit the scope of this research, the paper concentrates on automotive industries in ASEAN4 only. The reason is that, this industry is the world’s largest manufacturing activity and had long been protected in Malaysia, liberalized but with limited market access in Thailand, and growing in Indonesia with majority players are the Japanese automakers. The main question that this paper tries to answer is whether these countries should create a different and standardize the existing set of RoO in order to increase the utilization of FTAs with other partner countries. Complex rules in RoO have several implications on Japanese automotive production network when EPAs coming into force. Next, this paper discusses how to understand RoO among automotive related firms and at the same time promote automotive industry in ASEAN to develop to the world class levels.

Practical electron dosimetry: a comparison of different types of ionization chambers

International Nuclear Information System (INIS)

Dohm, O.S.; Christ, G.

2002-01-01

Since Markus chambers are no longer recommended in the 1997 DIN 6800-2 version there are uncertainties as to the use of alternative chamber types for electron dosimetry. Therefore, we performed a comparison between different types of ionization chambers. In particular, the widespread Farmer and Roos chambers were compared with the Markus chamber for polarity effect, chamber-to-chamber variation, and deviations of the measured absorbed dose relative to the value obtained with the Roos chamber (which is regarded as an ideal Bragg-Gray-chamber). The perturbation correction factor at 60 Co radiation was determined experimentally as 1,029 ± 0,5% (Roos chamber) and 1,018 ± 0,5% (Markus chamber) for the investigated plane-parallel chambers. In addition, we could show that the Roos chambers do not have a larger chamber-to-chamber variation than the Farmer chambers. Likewise, our results suggest that Farmer chambers could be used for electron energies above 6 MeV. (orig.) [de

Aasta betoonehitis 2005

Index Scriptorium Estoniae

2006-01-01

Aasta betoonehitiseks valiti TTP kontorihoone Tallinnas Pirital (Mähe tee 1), arhitekt Meelis Press. Eriauhinnad pälvisid arhitektuuribüroo QP Arhitektid (arhitektid Tõnu Laigu, Tõnu Laanemäe) AS Coal Terminal peahoone eest Muuga sadamas ja arhitektuuribüroo 3 + 1 Arhitektid eramu eest Magasini kvartalis Tallinnas

Kalvitis blasts prosecutor over missing money

Index Scriptorium Estoniae

2008-01-01

Endine Läti peaminister Aigars Kalvitis süüdistab Läti peaprokuröri Janis Maizitist korruptsioonitõrje büroo ümber puhkenud skandaalis, kuna prokuratuur ei kontrollinud asutuse raamatupidamist. Aigars Kalvitis otsustas eelmisel aastal tagandada büroo juhi Aleksejs Loskutovsi avastatud rikkumiste tõttu

Pricing the Ramping Reserve and Capacity Reserve in Real Time Markets

OpenAIRE

Ye, Hongxing; Li, Zuyi

2015-01-01

The increasing penetration of renewable energy in recent years has led to more uncertainties in power systems. In order to maintain system reliability and security, electricity market operators need to keep certain reserves in the Security-Constrained Economic Dispatch (SCED) problems. A new concept, deliverable generation ramping reserve, is proposed in this paper. The prices of generation ramping reserves and generation capacity reserves are derived in the Affine Adjustable Robust Optimizat...

Disneyland inglise moodi / Harry Liivrand

Index Scriptorium Estoniae

Liivrand, Harry, 1961-

2000-01-01

Kuppelehitisest Millennium Dome Londonis. Avati 1. I 2000 ajutise ehitisena jäädes lahti 31. detsembrini. Ehitamist alustati 1997. a. Richard Rogersi (1933) büroo projekti järgi. Millenniumikuplil on 14 tsooni. Zaha Hadidi büroo disainis "Mind Zone'i". Inglise kunstnike töid paviljonides

Snohetta : eksperdid ja ehitajad = Snohetta : Experts and Builders / Tarald Lundevall ; interv. Triin Ojari

Index Scriptorium Estoniae

Lundevall, Tarald

2008-01-01

Tallinnas 14. mail loenguga esinenud arhitekt Tarald Lundevall on partner 1989. a. asutatud Norra arhitektuuribüroos Snohetta. T. Lundevall oma büroo demokraatlikust ülesehitusest ning töödest, pikemalt Aleksandria raamatukogust (2001) ja Oslo ooperimajast (2008), eetikast, säästva arengu põhimõtetest, teadusprojektidest

Hiina tänapäeva arhitektuur - karmiilmeline, aga põnev / Zhang Ke, Zhang Hong, Xiaodu Liu ; interv. Hanna Läkk ja Ene Läkk

Index Scriptorium Estoniae

Zhang Ke

2006-01-01

Intervjuu Hiina arhitektuuribüroo Standardarchitecture arhitektide Zhang Ke ja Zhang Hongiga ning arhitektuuribüroo Urbanus arhitekti Xiaodu Liuga Hollandis Hiina tänapäeva tutvustaval näitusel. Hiina arhitektide haridusest, oma arhitektuuribüroode töödest, tänapäeva hiina arhitektuurist, põhiprobleemidest

Eksport avardab horisonti = Export broadens the horizon / Bjarke Ingels ; intervjueerinud Triin Ojari

Index Scriptorium Estoniae

Ingels, Bjarke

2010-01-01

Taani noore ja eduka arhitektuuribüroo Bjarke Ingels Group (BIG) arhitekt Bjarke Ingels EXPO 2010 paviljonidest, Taani paviljoni ehitusest, Hiinast arhitektuuriekspordi maana, büroo BIG projekteeritud rahvusraamatukogu hoone ehitusest Astanas Kasahstanis, Taani arhitektuuri ekspordist kui individuaalsete büroode teenest, BIG-i edust konkursside kaudu, avatud arhitektuurivõistlusest

Epidemiología del hipotiroidismo congénito en México Epidemiology of congenital hypothyroidism in Mexico

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Marcela Vela-Amieva

2004-04-01

Full Text Available OBJETIVO: Describir las características epidemiológicas del hipotiroidismo congénito en recién nacidos en unidades médicas de la Secretaría de Salud de México. MATERIAL Y MÉTODOS: Estudio transversal en el cual se cuantificó tirotropina en 1 379 717 muestras de sangre de recién nacidos (de cordón umbilical o de talón, recolectadas en papel filtro, de enero de 2001 a diciembre de 2002, en unidades médicas de la Secretaría de Salud. Las muestras con tirotropina >15 µUI/ml para sangre de cordón, y > 10 µUI/ml para talón, se consideraron sospechosas, y se notificaron para realizar el perfil tiroideo y gammagrafía. Cuando los resultados fueron positivos, el caso se registró como hipotiroidismo congénito confirmado, y se anotaron los datos clínicos y demográficos en formatos específicos. Se utilizó estadística descriptiva estándar. RESULTADOS: Se encontró una prevalencia de 4.12 x 10 000 recién nacidos, con predominancia del sexo femenino (66.84%. Se observaron variaciones estatales en la prevalencia, máxima en Quintana Roo (8.13 x 10 000 recién nacidos y mínima en Sinaloa (0.62 X 10 000. Se encontraron 57.46% tiroides ectópicas, 35.91% agenesias tiroideas y 6.63% defectos de la función de las hormonas tiroideas. Los principales datos clínicos fueron hernia umbilical (43.73% e ictericia (41.58%. A 151 (17.12% sospechosos no se les realizó estudio confirmatorio debido a datos incompletos o falsos en la ficha de identificación, fallecimiento del recién nacido, renuencia de los padres y cambio de domicilio. CONCLUSIONES: El hipotiroidismo se presentó en 1:2 426 recién nacidos, con predominio femenino (2:1, siendo la ectopia tiroidea su forma más común, y la hernia umbilical y la ictericia sus datos clínicos prominentes.OBJECTIVE: To describe the epidemiological characteristics of congenital hypothyroidism (CH in newborns (NB detected by the Ministry of Health of Mexico (SSA. MATERIAL AND METHODS: A cross

Recent rapid rise of a permethrin knock down resistance allele in Aedes aegypti in México.

Science.gov (United States)

García, Gustavo Ponce; Flores, Adriana E; Fernández-Salas, Ildefonso; Saavedra-Rodríguez, Karla; Reyes-Solis, Guadalupe; Lozano-Fuentes, Saul; Guillermo Bond, J; Casas-Martínez, Mauricio; Ramsey, Janine M; García-Rejón, Julián; Domínguez-Galera, Marco; Ranson, Hilary; Hemingway, Janet; Eisen, Lars; Black IV, William C

2009-10-13

Aedes aegypti, the 'yellow fever mosquito', is the primary vector to humans of dengue and yellow fever flaviviruses (DENV, YFV), and is a known vector of the chikungunya alphavirus (CV). Because vaccines are not yet available for DENV or CV or are inadequately distributed in developing countries (YFV), management of Ae. aegypti remains the primary option to prevent and control outbreaks of the diseases caused by these arboviruses. Permethrin is one of the most widely used active ingredients in insecticides for suppression of adult Ae. aegypti. In 2007, we documented a replacement mutation in codon 1,016 of the voltage-gated sodium channel gene (para) of Ae. aegypti that encodes an isoleucine rather than a valine and confers resistance to permethrin. Ile1,016 segregates as a recessive allele conferring knockdown resistance to homozygous mosquitoes at 5-10 microg of permethrin in bottle bioassays. A total of 81 field collections containing 3,951 Ae. aegypti were made throughout México from 1996 to 2009. These mosquitoes were analyzed for the frequency of the Ile1,016 mutation using a melting-curve PCR assay. Dramatic increases in frequencies of Ile1,016 were recorded from the late 1990's to 2006-2009 in several states including Nuevo León in the north, Veracruz on the central Atlantic coast, and Yucatán, Quintana Roo and Chiapas in the south. From 1996 to 2000, the overall frequency of Ile1,016 was 0.04% (95% confidence interval (CI95) = 0.12%; n = 1,359 mosquitoes examined). The earliest detection of Ile1,016 was in Nuevo Laredo on the U.S. border in 1997. By 2003-2004 the overall frequency of Ile1,016 had increased approximately 100-fold to 2.7% (+ or - 0.80% CI95; n = 808). When checked again in 2006, the frequency had increased slightly to 3.9% (+ or - 1.15% CI95; n = 473). This was followed in 2007-2009 by a sudden jump in Ile1,016 frequency to 33.2% (+ or - 1.99% CI95; n = 1,074 mosquitoes). There was spatial heterogeneity in Ile1,016 frequencies among 2007

The Costa Maya:  Evolution of a Touristic Landscape La Costa Maya : évolution d'un paysage touristique La Costa Maya : evolución de un paisaje turístico

Directory of Open Access Journals (Sweden)

Klaus J. Meyer-Arendt

2010-06-01

Full Text Available La Costa Maya est une région côtière du sud du Quintana Roo (Mexique, proche de l'îlet Ambergris au Bélize. Contrairement à la côte caribéenne du Mexique qui a souffert du développement du tourisme de masse à Cancun et le long de la Riviera Maya, la Costa Maya s'est orientée vers un développement durable avec notamment une faible densité de construction et le développement de l'écotourisme.Le développement s'est concentré autour de Puerto Costa Maya où un terminal de croisière a été construit en 2001. La station balnéaire (balneario de Majahual est devenue dépendante des 10-12 bateaux de touristes qui débarquaient chaque semaine. En dépit d'importants plans de développement, les plages reculées de la Costa Maya accueillaient tout au plus des écotouristes aisés et du tourisme lié à la plongée sous-marine.Le cyclone Dean, de catégorie 5, a dévasté le paysage en août 2007 et le rétablissement économique n'a pu être entamé que fin 2008, après la réouverture du terminal de croisière et la reconstruction de Majahual. Fin 2009, le trafic de croisière n'a pas retrouvé son niveau d'avant Dean et la récession mondiale couplée avec la grippe porcine et les violences liées à la drogue ont fait diminuer le tourisme en provenance des Etats-Unis. On ignore à quel niveau les nouvelles infrastructures tels l'aéroport international de Tulum qui propose un itinéraire de Chetumal à la plage et le nouveau complexe hôtelier à Xahuayxel, stimuleront la Costa Maya mexicaine créant peut-être une autoroute côtière reliée à San Pedro au Bélize.The Costa Maya is a vernacular coastal region of southeastern Quintana Roo (Mexico and adjacent Ambergris Cay, Belize.  As Mexico’s Caribbean coast suffered many growth pains associated with mass tourism development in Cancun and along the Riviera Maya, the Costa Maya by contrast was projected for more sustainable development including low-density housing and

The importance of bioacoustics for dolphin welfare: Soundscape characterization with implications for management

Science.gov (United States)

Spence, Heather Ruth

Sound is the primary sensory modality for dolphins, yet policies mitigating anthropogenic sound exposure are limited in wild populations and even fewer noise policies or guidelines have been developed for governing dolphin welfare under human care. Concerns have been raised that dolphins under human care live in facilities that are too noisy, or are too acoustically sterile. However, these claims have not been evaluated to characterize facility soundscapes, and further, how they compare to wild soundscapes. The soundscape of a wild dolphin habitat off the coast of Quintana, Roo, Mexico was characterized based on Passive Acoustic Monitoring (PAM) recordings over one year. Snapping shrimp were persistent and broadband, following a diel pattern. Fish sound production was pulsed and prominent in low frequencies (100 -- 1000 Hz), and abiotic surface wave action contributed to noise in higher frequencies (15 -- 28 kHz). Boat motors were the main anthropogenic sound source. While sporadic, boat motors were responsible for large spikes in the noise, sometimes exceeding the ambient noise (in the absence of a boat) by 20 dB root-mean-squared sound pressure level, and potentially higher at closer distances. Boat motor sounds can potentially mask cues and communication sounds of dolphins. The soundscapes of four acoustically distinct outdoor dolphin facilities in Quintana Roo, Mexico were also characterized based on PAM, and findings compared with one another and with the measurements from the wild dolphin habitat. Recordings were made for at least 24 hours to encompass the range of daily activities. The four facilities differed in non-dolphin species present (biological sounds), bathymetry complexity, and method of water circulation. It was hypothesized that the greater the biological and physical differences of a pool from the ocean habitat, the greater the acoustic differences would be from the natural environment. Spectral analysis and audio playback revealed that the site

Recent rapid rise of a permethrin knock down resistance allele in Aedes aegypti in México.

Directory of Open Access Journals (Sweden)

Gustavo Ponce García

Full Text Available BACKGROUND: Aedes aegypti, the 'yellow fever mosquito', is the primary vector to humans of dengue and yellow fever flaviviruses (DENV, YFV, and is a known vector of the chikungunya alphavirus (CV. Because vaccines are not yet available for DENV or CV or are inadequately distributed in developing countries (YFV, management of Ae. aegypti remains the primary option to prevent and control outbreaks of the diseases caused by these arboviruses. Permethrin is one of the most widely used active ingredients in insecticides for suppression of adult Ae. aegypti. In 2007, we documented a replacement mutation in codon 1,016 of the voltage-gated sodium channel gene (para of Ae. aegypti that encodes an isoleucine rather than a valine and confers resistance to permethrin. Ile1,016 segregates as a recessive allele conferring knockdown resistance to homozygous mosquitoes at 5-10 microg of permethrin in bottle bioassays. METHODS AND FINDINGS: A total of 81 field collections containing 3,951 Ae. aegypti were made throughout México from 1996 to 2009. These mosquitoes were analyzed for the frequency of the Ile1,016 mutation using a melting-curve PCR assay. Dramatic increases in frequencies of Ile1,016 were recorded from the late 1990's to 2006-2009 in several states including Nuevo León in the north, Veracruz on the central Atlantic coast, and Yucatán, Quintana Roo and Chiapas in the south. From 1996 to 2000, the overall frequency of Ile1,016 was 0.04% (95% confidence interval (CI95 = 0.12%; n = 1,359 mosquitoes examined. The earliest detection of Ile1,016 was in Nuevo Laredo on the U.S. border in 1997. By 2003-2004 the overall frequency of Ile1,016 had increased approximately 100-fold to 2.7% (+ or - 0.80% CI95; n = 808. When checked again in 2006, the frequency had increased slightly to 3.9% (+ or - 1.15% CI95; n = 473. This was followed in 2007-2009 by a sudden jump in Ile1,016 frequency to 33.2% (+ or - 1.99% CI95; n = 1,074 mosquitoes. There was spatial

Писатели-эстонцы в русской литературе и писатели русского происхождения в эстонской литературе (о литературном билингвизме и "билитера

Index Scriptorium Estoniae

Бассель, Нафтолий, 1932-2016

2006-01-01

Eesti kirjanikest vene kirjanduses ja vene kirjanikest eesti kirjanduses: Aleksandr Sheller-Mihhailov, Valmar Adams, Boriss Taggo-Novossadov, Juri Ivask, Jelizaveta Roos, Meta Roos, Liidia Toom, Leon Toom, Romuald Minna, Hans Leberecht, Ahto Levi (tegelikult Levi Lippu), Jaan Kaplinski, Aleksis Rannit (tegelikult Aleksei Dolgošov), Juri Šumakov, Valeria Ränik (tegelikult Poprjanik)

Väikeste ridamajade rida Kloostrimetsas = A Row of Little Row Houses in Kloostrimetsa / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2003-01-01

Neljast ridaelamust, millest kaks on propjekteerinud Ado Eigi (Ado Eigi Arhitektuuribüroo, konstruktsioonid: Uno Pall, projekt 2002, valminud 2003), ühe Ott Kadarik ja Mihkel Tüür (COO Arhitektid, projekt 2002, valminud 2003) ning ühe arhitektuuribüroo Kosmos (valminud 2004). Sisevaade, 6 välisvaadet, 5 korruste plaani

Sisearhitekt Pille Lausmäe - Tallinna töö- ja toidukultuuri looja / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2006-01-01

Omanimelise arhitektuuribüroo omanik sisearhitekt Pille Lausmäe oma elust ja tööst, isast sisearhitekt Väino Tammest. Eesti Kunstiakadeemias õpib sisearhitektuuri ka Pille poeg Ville Lausmäe ja töötab ema büroos. Pillet iseloomustavad Priit Põldme, Riina Sildots, Rein Tallermo, Mari Kaljuste

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Писатели-эстонцы в русской литературе и писатели русского происхождения в эстонской литературе (о литературном билингвизме и "билитера

Index Scriptorium Estoniae

Бассель, Нафтолий, 1932-2016

2007-01-01

Eesti kirjanikest vene kirjanduses ja vene kirjanikest eesti kirjanduses: Aleksandr Šeller-Mihhailov , Valmar Adams, Boriss Taggo-Novossadov, Juri Ivask, Jelizaveta Roos, Meta Roos, Liidia Toom, Leon Toom, Romuald Minna, Hans Leberecht, Ahto Levi (tegelikult Levi Lippu), Jaan Kaplinski, Aleksis Rannit (tegelikult Aleksei Dolgošov, Juri Šumakov, Valeria Ränik (tegelikult Poprjanik)

Rakvere uus bussijaam = New Bus Terminal in Rakvere / Margit Mutso, Madis Eek

Index Scriptorium Estoniae

Mutso, Margit, 1966-

2000-01-01

Ühekorruseline bussijaamahoone, ooteruum paikneb klaasmahus. Projekteerija, istemööbli disain: Arhitektuuribüroo Eek & Mutso. Arhitektid Margit Mutso, Madis Eek, kaasa töötas Reio Avaste. Konstruktiivne osa, eriosad: Projektbüroo Talone. Projekt 1999, ehitus 1999-2000. 12 ill. Asendiplaan, I korruse plaan, lõiked, välis- ja sisevaated

Rules of origin and development of regional production network in ...

International Development Research Centre (IDRC) Digital Library (Canada)

Simpler Rules of Origin (RoO) with product specific rules can act as a catalyst in trade even if tariff rates are not low. Sector specific restrictiveness across trade agreements are assessed, in view of potential growth of International production networks (IPN). RoO is shown to play a significant role in promoting IPN.

Chicle harvesting and extractive reserves in the Maya Biosphere b: Reserve

Energy Technology Data Exchange (ETDEWEB)

Dugelby, B.L.

1995-12-31

Chicle latex has been extracted from the forests of northern Guatemala for over 100 years and is a key element in the extractive reserve component of the Maya Biosphere Reserve. The carrying capacity of the reserve for chicle extraction can be estimated from a model incorporating ecological data (such as latex yields per tree and population structure of chicle trees, Manilkara zapota, Sapot.) with socio-ecological and political information concerning camp and chicle resource availability, harvester tapping behavior, and historical and present-day institutional organization. I estimate that chicle harvestors currently utilize and area larger than the multiple use zone of the reserve in a unsustainable manner. Simple reduction of harvestors numbers will not ensure sustainability; institutional reforms are also in order. Extractive reserves can play an important role in preserving tropical forests. However, their effectiveness is highly dependent on prevailing ecological, socio-economic, and political conditions. Wise planning and management of extractive reserves demands an understanding of the system`s carrying capacity. In addition, a strong institutional foundation is necessary to assure effective monitoring and enforcement of harvesting regulations.

Effect of diffuse roof cover with anti-reflection coating for roses; Effect van diffuus kasdek met Anti Reflectie coating bij Roos

Energy Technology Data Exchange (ETDEWEB)

Garcia Victoria, N.; Kempkes, F.

2012-10-15

The rose Red Naomi was cultivated in two greenhouses at Wageningen UR Greenhouse Horticulture in Bleiswijk, Netherlands (August 2010 - September 2011). One greenhouse covered with normal float glass; the other with AR coated diffuse glass (70% haze). This Anti-Reflection coating on both glass sides compensated for the loss in light transmission caused by the diffusing structure in the glass. The diffuse AR glass lead to a 5.2% higher production (>6.1% fresh weight). Sunscreens were necessary in spring and summer to avoid high light levels on the flower buds, as they cause very high bud temperatures leading to quality problems (blue petal edges and burnt leaf tips). The diffuse greenhouse cover allowed a 100 W/m{sup 2} higher screening threshold than the reference glass. This caused a 2.7% higher daily light integral, able to explain part of the extra production obtained. Part of the extra production achieved can not be explained by the measured factors as no differences were found in the amount of light intercepted by the crop or in leaf photosynthesis under both cover types. The light under the diffuse AR cover was nevertheless much smoother, so the crop seemed to suffer less (lower bud temperatures and less burned leaf tips), and this should provide an explanation for the rest of the extra production. The cover properties did not influence disease development (powdery mildew). The obtained extra production makes the tempered, diffuse glass with Anti Reflection coating on both sides economically feasible [Dutch] Tussen augustus 2010 en september 2011 is bij Wageningen UR Glastuinbouw het effect van diffuus glas, met dubbelzijdige AR coating, op de productie en energiegebruik van roos 'Red Naomi' onderzocht. Onder het diffuse glas werden 5,2% meer bloemtakken geproduceerd, deze rozen waren ook iets langer en zwaarder (6,1% meer versgewicht). Dit verschil kan deels verklaard worden doordat er onder het diffuse glas pas bij hogere stralingsniveau

Pricing of reserves. Valuing system reserve capacity against spot prices in electricity markets

International Nuclear Information System (INIS)

Just, Sebastian; Weber, Christoph

2008-01-01

This paper models the interdependencies between markets for secondary reserve capacity and spot electricity to derive the pricing of reserves under equilibrium conditions. Starting with the indifference condition between offering in both markets, the reservation price is derived from the opportunity cost consideration and the unit commitment conditions in a fundamental interrelated market framework. The reserve market examined compares widely to the German market for secondary reserves, but the general approach may also be used to investigate other reserve markets. The approach explores and formalizes the influence of reserve capacity on the spot market supply function. A numerical solution procedure is provided to this non-trivial case of market interaction. The model is used to estimate the expected reservation price development over the last years in Germany. (author)

Aasta betoonehitis 2002 / Enno Rebane

Index Scriptorium Estoniae

Rebane, Enno, 1964-

2003-01-01

Betoonehitis 2002 - Tartu vangla, Kalle Rõõmuse Arhitektuuribüroo (projekteerija EstKONSULT, ehitaja AS Skanska EMV). Eriauhinnad: arhitektuurse lahenduse eest - Erki Valdre, Tuvi t. 12 korterelamud Tallinnas; projekteerijale - Eesti Projekt, Linnamäe hüdroelektrijaama taastamine (arhitekt Raine Karp); ehitusmaterjalitootjale - E-Betoonelement, STT katuseelement (Nefab Eesti AS pakenditehas, arhitektuurne lahendus - Tõnis Tarbe Arhitektuuribüroo)

Retrovõtmes pühamu / Karin Paulus

Index Scriptorium Estoniae

Paulus, Karin, 1975-

2005-01-01

Tallinnasse Lasnamäele plaanitava Jumalaema kiriku arhitektuurikonkursi võidutööst arhitektuuribüroolt Z-Projekt (arhitektid Oleg Zhemtshugov, Nikolai Djatko, Jevgeni Kolomenkin). Kommenteerib kunstiteadlane Mari-Liis Paaver. Ergutuspreemiad said arhitektuuribüroo ZiZi & YoYo projekt (arhitektid Veronika Valk, Yoko Alender) ning arhitektuuribüroo Lokomotiiv (arhitektid Jüri Martson, Rasmus Reinolt, Ivo-Martin Veelma)

Moodne tarbimisarhitektuur / Maria-Kristiina Soomre

Index Scriptorium Estoniae

Soomre, Maria-Kristiina, 1978-

2000-01-01

Milano moemaja Miucca Prada investeerimisplaanist. Rem Koolhaasi AMO-büroo kujundab 2001.a. avatava www.prada.com lehekülje, OMA-büroo disainib kauplused New Yorki, Los Angelesse, San Franciscosse. Herzog & de Meuron kujundavad kaupluse Manhattani keskel, vabriku Milano lähedale Terranuovasse. Kauplus tellitakse Kazuyo Sejima ja Ryue Nishizawa büroolt Sanaa

Rikas egiptlane Emad Aziz jahib finantsraskustes American Toursi / Emad Aziz ; interv. Toivo Tänavsuu

Index Scriptorium Estoniae

Aziz, Emad

2004-01-01

Egiptuse ärimees ja reisibüroo Marhaba Tours omanik soovib võimaldada Eesti turistidele uusi atraktiivseid sihtkohti, kuhu Tallinnast varem lennatud pole. American Tours'i osta sooviv ärimees plaanib Tallinnasse ehitada hotelle. Vt. samas: Epp Rääbis: kuulen süüdistustest vaid meedia vahendusel. Lisad: Rikas härra; Reisibüroo American Tours

Mälu ja tunnustamine: 2011 kui kahekordne tähtaasta Jaapani ja Eesti suhetes / Hiromi Komori

Index Scriptorium Estoniae

Komori, Hiromi, 1969-

2011-01-01

Jaapani ja Eesti suhetest. Jaapani valitsus võttis vastu otsuse Eesti iseseisvuse tunnustamise kohta de jure 26. jaanuaril 1921. Jaapani saatkond avati Riias 1929. 8. detsembril 1939 avati Tallinnas Jaapani diplomaatiline büroo. Diplomaatilisse büroosse suunatud diplomaat Shimada sai Tallinnas tegutseda ainult üheksa kuud. Eesti annekteerimise de facto tunnustamisest ja diplomaatilise büroo sulgemisest

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Meiosis en mutantes desinápticos con restitución cromosómica en Rhoeo spathacea (Commelinaceae

Directory of Open Access Journals (Sweden)

García-Velasquez Armando

2008-09-01

Full Text Available El estudio se llevó a cabo en recolectas de Rhoeo spathacea realizadas en Veracruz, Chiapas, Tabasco, Yucatán, Quintana Roo y Michoacán, México. Las plantas presentaron número diploide de cromosomas (2n=12 en mitosis. En meiosis los individuos formaron anillo y/o cadenas en metafase I, con excepción de varios mutantes desinápticos-RSD (separación de cromosomas apareados. En meiosis de Rhoeo no se observan bivalentes ni hay posibilidades de entrecruzamiento, y consecuentemente no habrá quiasmas ya que no hay cuatro cromátidas de las cuales dos deberían ser no-hermanas. Sin embargo, en anafase I hay disyunción altamente regular 6:6 que se presentan como "anillos o donas" con los brazos cortos hacia el interior de esas figuras. De la autofecundación de un mutante desináptico-RSD (GAVA 1.1 se obtuvo una progenie F2 de 123 individuos: 90 diploides-formadores de anillos y 1 acrotrisómico (2n=13. Esto es, 91 individuos "revirtieron" el comportamiento y 29 fueron diploandróginos tetraploides desinápticos (2n=24 y 3 hipertetraploides (2n=25 desinápticos. Este comportamiento diferente entre hermanos confirma que Rhoeo es dicarión: los diploides- con anillo tendrán el subgenoma A, y los tetraploides el B, que incluyen cromatidas hermanas en la restitución en segunda división (2n.

Exploración del proceso de aprendizaje autorregulado de estudiantes universitarios mayahablantes

Directory of Open Access Journals (Sweden)

Elayne Dinora Chan-Martín

2017-04-01

Full Text Available La autorregulación es una capacidad distintiva del ser humano. Su influencia en el desempeño del aprendizaje académico es determinante. Los alumnos que autorregulan su aprendizaje monitorizan su comportamiento en relación con sus objetivos y reflexionan sobre los avances que se van produciendo. Se orientan a un aprendizaje transformador, no puramente reproductor. Esta investigación hace una exploración del proceso de aprendizaje autorregulado en estudiantes universitarios mayahablantes. La muestra se conformó por 40 alumnos de origen maya, de los cuales el 57.5% corresponde al sexo femenino y el 42.5% al masculino. El 30% de la muestra es mayahablante y el 67.5% habla castellano. Los sujetos de la muestra de la investigación cursaban el 6o. semestre de universidad, inscritos en seis diferentes programas educativos de la Universidad Intercultural Maya de Quintana Roo. Todos eran alumnos que estudiaban Lengua Maya Nivel IV. Para medir el nivel de autorregulación del aprendizaje se aplicó la escala de evaluación interactiva del proceso de enseñanza aprendizaje (EIPE-6. Los resultados indican que en el proceso de autorregulación en el aula, al relacionar las variables idioma y planificación, la correlación es significativa en el nivel 0.01 (r = -0.579 y en la autorregulación en general la correlación es significativa en el nivel 0.01 (r = -0.436. El 40% de los alumnos planifica, el 25% ejecuta lo planificado y el 45% autorreflexiona. El idioma no influye en el proceso del aprendizaje autorregulado. La autorregulación es una variable determinante para el aprendizaje transformador.

The genus Clathria from the Gulf of Mexico and Mexican Caribbean, with redescription and resurrection of Clathria carteri (Poecilosclerida: Microcionidae).

Science.gov (United States)

Gómez, Patricia

2014-04-16

The present study deals with the morphologic variability of eight Clathria species from the southern Gulf of Mexico and Mexican Caribbean. Clathria (Clathria) foliacea, C. (C.) carteri, C. (Microciona) calla, C. (M.) echinata, C. (M.) spinosa, C. (Thalysias.) venosa, and C. (T.) virgultosa were collected by scuba diving and dredging from the southern Gulf of Mexico (Veracruz, Campeche Bank, Yucatan) to the Caribbean coast (Quintana Roo) from shoreline to 120 m depth. The population of Clathria seems to be neither abundant nor diverse in the studied area. However, the seven species considered here are presumed to have a slight morphologic variability, and the interspecific relationships had not been fully resolved. The present study focuses on their differentiation through comparison of external morphology, skeletal architecture, spiculation and measurements of characters as well as scanning electronic microscopy.    Comparisons were made among intra- and interspecific material and with the available type material. In particular, C. carteri Topsent (1889), previously synonymized with C. foliacea, is resurrected by establishing a neotype from material from the type locality, Campeche Bank; this has not been studied since its original description and is here redescribed for the first time. Another neotype is assigned for C. foliacea from Campeche also, since the original material is no longer available, and this species is redescribed also. Significant differences in spiculation between C. foliacea and C. carteri were found by one-way ANOVA. Although C. (T.) venosa resembles C. (T.) raraechelae in spiculation, these two species differ in measurements and skeletal organization. C. (T.) virgultosa is typified by a peculiar acanthostyle that is markedly spined on distal parts of the shaft, and by two types of tiny microscleres. This study has extended the known geographic distribution of each of these Clathria spp. within the lower Gulf of Mexico.

Tourism's nitrogen footprint on a Mesoamerican coral reef

Science.gov (United States)

Baker, D. M.; Rodríguez-Martínez, R. E.; Fogel, M. L.

2013-09-01

Globally, the eutrophication of coastal marine environments is a worsening problem that is accelerating the loss of biodiversity and ecosystem services. Coral reefs are among the most sensitive to this change, as chronic inputs of agricultural and wastewater effluents and atmospheric deposition disrupt their naturally oligotrophic state. Often, anthropogenic alteration of the coastal nitrogen pool can proceed undetected as rapid mixing with ocean waters can mask chronic and ephemeral nitrogen inputs. Monitoring nitrogen stable isotope values ( δ 15N) of benthic organisms provides a useful solution to this problem. Through a 7-yr monitoring effort in Quintana Roo, Mexico, we show that δ 15N values of the common sea fan Gorgonia ventalina were more variable near a developed (Akumal) site than at an undeveloped (Mahahual) site. Beginning in 2007, the global recession decreased tourist visitations to Akumal, which corresponded with a pronounced 1.6 ‰ decline in sea fan δ 15N through 2009, at which time δ 15N values were similar to those from Mahahual. With the recovery of tourism, δ 15N values increased to previous levels. Overall, 84 % of the observed variation in δ 15N was explained by tourist visitations in the preceding year alone, indicating that variable nitrogen source contributions are correlated with sea fan δ 15N values. We also found that annual precipitation accounted for some variation in δ 15N, likely due to its role in groundwater flushing into the sea. Together, these factors accounted for 96 % of the variation in δ 15N. Using a mixing model, we estimate that sewage can account for up to 42 % of nitrogen in sea fan biomass. These findings illustrate the high connectivity between land-based activities and coral reef productivity and the measurable impact of the tourism industry on the ecosystem it relies on.

PREFACE: X Mexican School on Gravitation and Mathematical Physics: ''Reaching a Century: Classical and Modified General Relativity's Attempts to explain de evolution of the Universe''

Science.gov (United States)

Bárcenas, R. B.; Hernández, H. H. H.; Sabido, M.

2015-11-01

The collection of papers in this volume was presented during the X Mexican School on Gravitation and Mathematical Physics, which was held in Playa del Carmen, Quintana Roo, México, December 1-5, 2014. The Mexican School on Gravitation and Mathematical Physics is a series of conferences sponsored by the Mexican Physical Society that started in 1994 with the purposes of discussing and exchanging current ideas in gravitational physics. Each Mexican School has been devoted to a particular subject, and these have included supergravity, branes, black holes, the early Universe, observational cosmology, quantum gravity and numerical relativity. In this ocasion the theme of the school was Reaching a Century: Classical and Modified General Relativity's Attempts to explain the evolution of the Universe, which focused on the discussion of classical and modified aspects of general relativity. Following our previous Schools, world leaders in the field were invited to give courses and plenary lectures. More specialized talks were also presented in parallel sessions, and some of them have been included in these proceedings. The contributions in this volume have been reviewed and represent some of the courses, plenary talks and contributed talks presented during our X School. We are indebted to the contributors of these proceedings as well as to the rest of the participants in our Mexican School all for making of it a complete success. As for financial support we should mention the Mexican National Science and Technology Council (CONACyT), the Royal Society of London (UK), the Mexican Physical Society (SMF), as well as several Institutions including: Centro de Investigación y Estudios Avanzados (CINVESTAV), Universidad Autónoma Metropolitana Iztapalapa (UAM-I), Universidad de Guanajuato (UG), and Universidad Nacional Autónoma de México (UNAM).

[Hurricane impact on Thalassia testudinum (Hydrocharitaceae) beds in the Mexican Caribbean].

Science.gov (United States)

Arellano-Méndez, Leonardo U; Liceaga-Correa, María de los Angeles; Herrera-Silveira, Jorge A; Hernández-Núñez, Héctor

2011-03-01

Hurricanes have increased in strength and frequency as a result of global climate change. This research was conducted to study the spatio-temporal distribution and changes of Thalassia testudinum, the dominant species in Bahia de la Ascension (Quintana Roo, Mexico), when affected by heavy weather conditions. To complete this objective, a 2001 Landsat ETM+ image and the information from 525 sampling stations on morpho-functional and coverage of T. testudinum were used, and the seeds generated for the classification of eight benthic habitats. To quantify the changes caused by two hurricanes, we used two images, one of 1988 (Gilberto) and another of 1995 (Roxanne); other three data sets (2003, 2005 and 2007) were also used to describe the study area without major weather effects. Six categorial maps were obtained and subjected to analysis by 8 Landscape Ecology indexes, that describe the spatial characteristics, structure, function, change of the elements (matrix-patch-corridor), effects on ecosystems, connectivity, edges, shape and patch habitat fragmentation. Models indicate that T. testudinum may be classified as a continuum (matrix), since the fragments were not observed intermittently, but as a progression from minimum to maximum areas in reference to their coverage (ecological corridors). The fragments do not have a regular shape, indicating that the impacts are recent and may be due to direct effects (high-intensity hurricanes) or indirect (sediment). Fragments of type "bare soils" have a discontinuous distribution, and are considered to be the sites that have remained stable over a long timescale. While more dense coverage areas ("beds", "medium prairie" and "prairie") have low fragmentation and high connection of fragments. Features have an irregular perimeter and radial growth of formal; suggesting that the impact of meteors has no effect on the resilience of T. testudinum in this ecosystem, indicating good environmental quality to grow in this bay.

Mexorchestia: a new genus of talitrid amphipod (Crustacea, Amphipoda, Talitridae) from the Gulf of Mexico and Caribbean Sea, with the description of a new species and two new subspecies.

Science.gov (United States)

Wildish, David J; Lecroy, Sara E

2014-08-26

Two species of supralittoral Tethorchestia were reported by Bousfield (1984) to occur on the shores of the Gulf of Mexico and closely adjacent waters: T. antillensis Bousfield, 1984 from Quintana Roo, Mexico and an undescribed species, Tethorchestia sp. B of Bousfield (1984), from Florida and the U.S. Gulf coast. In this paper, we rediagnose and illustrate the former taxon based on material from Goodland Bay, Florida, which represents a range extension for that species. We examined the latter taxon from many locations throughout the Gulf of Mexico using classical morphology, epidermal pigment pattern recognition and allometry, reinforced by molecular markers (mitochondrial cytochrome oxidase I, Radulovici 2012), determining that Tethorchestia sp. B represents a new genus and species, comprising two subspecies. The nominate subspecies, Mexorchestia carpenteri carpenteri n. gen., sp. and subsp., is described from Tiger Tail Beach, Florida, based on conventional morphological criteria and its distinctive epidermal pigment patterns. The Tiger Tail Beach ecotope of M. c. carpenteri n. gen., sp. and subsp. was distinct from that of other locations examined in Florida and was associated with epidermal pigment pattern polymorphism, absent at other locations. A second subspecies, distinguished by differences in size, number of articles in the flagellum of antenna 2, the number of marginal setae on oostegite 2 of the female and the number of distal dorsolateral robust setae on the telson, was found in samples from Belize and Mexico. This subspecies is described from material collected at Turneffe Island, Belize, as Mexorchestia carpenteri raduloviciae n. gen., sp. and subsp. Like M. c. carpenteri n. gen., sp. and subsp., this taxon is also associated with epidermal pigment pattern polymorphism. A key is provided for the three currently described species of Tethorchestia (two extant) and two new subspecies of Mexorchestia n.gen. 

In Vitro Cultivation of Cymatocarpus solearis (Brachycoeliidae) Metacercariae to Obtain the Adult Stage without the Marine Turtle Definitive Host

Science.gov (United States)

Álvarez-Cadena, José

2010-01-01

In vitro cultivation of trematodes would assist studies on the basic biology of the parasites and their hosts. This is the first study to use the yolk of unfertilized chicken eggs as a simple and successful method of ovocultivation and the first time to obtain the adult-stage of the trematode Cymatocarpus solearis Braun, 1899 (Digenea: Brachycoeliidae). Chicken eggs were inoculated with metacercariae from the muscle of the spiny lobster, Panulirus argus (Latreille, 1804). The metacercariae were excysted and incubated for 576 hr (24 days) at 38℃ to obtain the adult stage. Eggs in utero were normal in shape and light brown color. The metacercariae developed into mature parasites that have been identified as the adult-stage found in marine turtles. The adult lobsters collected in Quintana Roo State, Mexico, showed the prevalence of 49.4% and the mean intensity of 26.0 per host (n = 87). A statistical study was performed to determine that no parasitic preference was detected for male versus female parasitized lobsters. Morphometric measurements of the adult-stage of C. solearis obtained in our study have been deposited in the National Helminths Collection of the Institute of Biology of the National Autonomous University of Mexico. This study is significant because it is the first time that a digenean of the family Brachycoeliidae has been demonstrated to develop in vitro from metacercariae into adults capable of producing eggs using the yolk of unfertilized chicken eggs. Secondly, this technique allows to obtain the adult stage of C. solearis without the presence of its marine turtle host, allows us to describe the mature parasites, and thus contribute to our understanding of the biology of C. solearis. PMID:20333285

HYDROCARBONS RESERVES IN VENEZUELA

Energy Technology Data Exchange (ETDEWEB)

Gonzalez Cruz, D.J.

2007-07-01

Venezuela is an important player in the energy world, because of its hydrocarbons reserves. The process for calculating oil and associated gas reserves is described bearing in mind that 90% of the gas reserves of Venezuela are associated to oil. Likewise, an analysis is made of the oil reserves figures from 1975 to 2003. Reference is also made to inconsistencies found by international experts and the explanations offered in this respect by the Ministry of Energy and Petroleum (MENPET) and Petroleos de Venezuela (PDVSA) regarding the changes that took place in the 1980s. In turn, Hubbert's Law is explained to determine peak production of conventional oil that a reservoir or field will reach, as well as its relationship with remaining reserves. Emphasis is placed on the interest of the United Nations on this topic. The reserves of associated gas are presented along with their relationship with the different crude oils that are produced and with injected gas, as well as with respect to the possible changes that would take place in the latter if oil reserves are revised. Some recommendations are submitted so that the MENPET starts preparing the pertinent policies ruling reserves. (auth)

Uus-Maailma uued kortermajad

Index Scriptorium Estoniae

2008-01-01

Korter endises büroohoones Luha 16 - rekonstrueerimisprojekt Tormi Sooväljalt, korter uues galeriimajas Koidu 60-62/ Komeedi 14 - arhitektid Rein Murula ja Karl Koosa (Rein Murula Arhitektuuribüroo OÜ) ja korter uues büroo- ja kortermajas Villardi 22 - Humana Grupp Arhitektuuri- ja Inseneribüroolt. Kommenteerivad arhitektid Peeter Tambu ja Eve Arpo ning kinnisvara maakler Rando Vanaveski

Arhitektuuriuudised / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2006-01-01

Tate Moderni juurdeehitus Londonis, arhitektid Jacques Herzog ja Pierre de Meuron. Šveitsi arhitektuuribüroos Geninasca Delefortrie projekteeritud eramu. Konkursist Vockerode elektrijaama rekonstrueerimiseks Saksamaal. Portugali arhitekti Alvaro Leite Siza Viera projekteeritud eramu. VIP paviljon Valencias 2007. aasta purjeregatiks, arhitekt David Chipperfild. Berliini uus raudteejaama peahoone. Madridi lennujaama Barajas uus terminal, büroo Richard Rogers Partnership, võitis RIBA Stirling Prize'i

Ülemiste järve esitlev elegantne hotell : Lennujaama tee 2, Tallinn = An Elegant Hotel that Presents Lake Ülemiste : Lennujaama tee 2, Tallinn / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2004-01-01

Aerofloti hotelli kohale ja osalt vana maja konstruktsioonidele ehitatud Ülemiste hotellist. Hotelli ees on parkla ja purskkaevuga väljak. Projekteerija: EA Reng, projektijuht Taavi Turvas. Arhitekt Martin Aunin. Sisekujundus: Meelis Press, Hillar Mänd (M. Pressi Arhitektuuribüroo). Konstruktsioonid: Inseneribüroo Pike. Ehitaja: FKSM. I, II ja III korruse plaan, 3 välis- ja 5 sisevaadet

Karakteriga hotell - L'Ermitage : Toompuiestee 19, Tallinn = A Hotel with Character - L'Ermitage : Toompuiestee 19, Tallinn / Regina Viljasaar

Index Scriptorium Estoniae

Viljasaar, Regina

2004-01-01

Hoone esifassaad on kaetud tumepruuniks patineerunud vasega, hoovipoolne külg on roosa. Uuenduslikud on õhukesed põrandaküttega vahelaed. Projekteerija: Arhitektuuribüroo Pluss. Autor Indrek Allmann. Konstruktor: Inseneribüroo Pike. Sisekujundaja Tatjana Jakobson. I korruse avaliku tsooni kujundas Pille Lausmäe. Projekt 2003, valmis 2004. I ja tüüpkorruse plaan, sisevaade, 5 välisvaadet

[Understanding Oral and Nasal Mucosal Absorption of Fentanyl, and Rectal Absorption of Buprenorphine].

Science.gov (United States)

Shimoyama, Naohito; Shimoyama, Megumi; Kubota, Yukino; Kato, Yoko

2015-11-01

One of the key issues in the treatment of pain is to choose the appropriate route and dosage form of analgesics for each individual patient in pain. New drug forms of fentanyl absorbed by oral or nasal mucosa, and buprenorphine absorbed by rectal mucosa are described in this chapter. Only lipophilic opioids such as fentanyl and buprenorphine can be absorbed via the mucosa of oral or nasal cavity of the human body. The T max of rapid onset opioids (ROO) such as fentanyl buccal or sublingual tablets is the fastest among various dosage forms of opioid analgesics. However, such rapid increase in plasma concentration of fentanyl by ROO formulations may cause the risk of respiratory depression. Safe ways to use ROO analgesics are described.

US uranium reserves

International Nuclear Information System (INIS)

Hansen, M.V.

1981-01-01

The current low level of demand, compounded by rapidly rising costs and low prices, has caused a significant reduction in drilling for uranium in the United States, and the trend is likely to continue for a few more years. The effect on uranium reserves will be fewer additions to reserves because less exploration is being done. Further reductions will occur, especially in low-cost reserves, because of increasing costs, continuing depletion through production, and erosion through the high grading of deposits to fulfill previous contractual commitments. During the past several years, it has been necessary to increase the upper reserve cost level twice to compensate for rising costs. Rising costs are reducing the $15 reserves, the cost category corresponding most closely to the present market price, to an insignificant level. An encouraging factor related to US uranium reserves is that the US position internationally, as far as quantity is concerned, is not bad for the longer term. Also, there is a general opinion that US consumers would rather contract for domestic uranium than for foreign because of greater assurance of supply. Still another factor, nearly impossible to assess, is what effect rising costs in other countries will have on their uranium reserves. The annual conferences between the Grand Junction Area Office staff and major uranium companies provide a broad overview of the industry's perception of the future. It is not optimistic for the short term. Many companies are reducing their exploration and mining programs; some are switching to other more marketable mineral commodities, and a few are investing more heavily in foreign ventures. However, there is general optimism for the long term, and many predict a growth in demand in the mid-1980s. If the industry can survive the few lean years ahead, rising prices may restore its viability to former levels

Lihtne, universaalne, sobiv, odav ja jõuline : Abalos & Herrerose selgesõnaline arhitektuur = Simple, universal, felicitous, cheap and intense : the straight-talkind architecture of Abalos & Herreros / Hans Ibelings

Index Scriptorium Estoniae

Ibelings, Hans

2003-01-01

Hispaania arhitektuuribüroo loomingust. 1984. aastast töötavad koos Inaki Abalos (sünd. 1956), Juan Herreros (sünd. 1958), 1997. a. lisandus Angel Jaramillo (sünd. 1968). Büroo projekteeritud El Retiro spordihallist (2003), Colmenarejo halduskeskusest (1999) ja Usera raamatukogust (2003) Madridis, jäätmekäitluskompleksist Valdemingomezis (1999) ja Pintos (2003), Barcelona Rannapargi projektist (2004). 18 ill

Uus linnaökoloogia = New Urban Ecology / Christopher Moller ; interv. Triin Ojari

Index Scriptorium Estoniae

Moller, Christopher

2005-01-01

Arhitekt Christopher Moller (sünd. 1961, Uus-Meremaa) rajas 1997. a. koos Burton Hamfelti (Kanada), Jonathan Woodroffe'i ja Dominic Papaga (Inglismaa) Amsterdamis büroo S333. Büroo lähenemisest linnaplaneerimisele, Europani võidutöö järgi valminud Groningeni elamukompleksist Schots 1+2, Nieuw-Vennepi linnakeskuse projektist (2000-), kvaliteetruumist, linnaökoloogiast, Tallinna ja siinsete arhitektide võimalustest jm. 7 ill

Hoiupanga peahoone. Tallinn, Rävala pst. 5

Index Scriptorium Estoniae

1998-01-01

Projekteerimise ajaloost: 1985. a. Tallinna Moemaja arhitektuurikonkurss ja 1988. a. RPIs "Eesti Tööstusprojekt" valmis ENSV Kergetööstuse Ministeeriumi Teaduslik-Tehnilise Keskuse ja Tallinna Moemaja I ehitusjärgu projekt (R. Kurvitz, U. Muru); !991. a. AS Astlanda ärikeskuse tellimusel krundi hoonestamiseks eskiisprojekt (J. Okas, M. Lõoke) ning alternatiivprojekt (T. Altosaar). Kvartali hoonestuskava: Arhitektuuribüroo Kalle Rõõmus. Projekteerijad: SRV OY, arhitekt Kari Mökkälä, Arhitektuuribüroo Kalle Rõõmus, arhitekt Kullervo Kliimand. Sisekujundus: ARS Interjöörprojekt, autorid Karolin Kõll, Eero Jürgenson, Martin Pärn. Projektijuht: SRV Teräsbetooni Oy. Ehituse peatöövõtt: Eesti Ehitus. Konstruktiivne osa: E - Inseneribüroo. Projekt 1995-97, valmis 1997. Täismonteeritav karkasssüsteemis 7-korruseline büroohoone

Status of fossil fuel reserves

International Nuclear Information System (INIS)

Laherrere, J.

2005-01-01

Reserves represent the sum of past and future productions up to the end of production. In most countries the reserve data of fields are confidential. Therefore, fossil fuel reserves are badly known because the published data are more political than technical and many countries make a confusion between resources and reserves. The cumulated production of fossil fuels represents only between a third and a fifth of the ultimate reserves. The production peak will take place between 2020 and 2050. In the ultimate reserves, which extrapolate the past, the fossil fuels represent three thirds of the overall energy. This document analyses the uncertainties linked with fossil fuel reserves: reliability of published data, modeling of future production, comparison with other energy sources, energy consumption forecasts, reserves/production ratio, exploitation of non-conventional hydrocarbons (tar sands, extra-heavy oils, bituminous shales, coal gas, gas shales, methane in overpressure aquifers, methane hydrates), technology impacts, prices impact, and reserves growth. (J.S.)

Biosphere reserves: Attributes for success.

Science.gov (United States)

Van Cuong, Chu; Dart, Peter; Hockings, Marc

2017-03-01

Biosphere reserves established under the UNESCO Man and the Biosphere Program aim to harmonise biodiversity conservation and sustainable development. Concerns over the extent to which the reserve network was living up to this ideal led to the development of a new strategy in 1995 (the Seville Strategy) to enhance the operation of the network of reserves. An evaluation of effectiveness of management of the biosphere reserve network was called for as part of this strategy. Expert opinion was assembled through a Delphi Process to identify successful and less successful reserves and investigate common factors influencing success or failure. Ninety biosphere reserves including sixty successful and thirty less successful reserves in 42 countries across all five Man and the Biosphere Program regions were identified. Most successful sites are the post-Seville generation while the majority of unsuccessful sites are pre-Seville that are managed as national parks and have not been amended to conform to the characteristics that are meant to define a biosphere reserve. Stakeholder participation and collaboration, governance, finance and resources, management, and awareness and communication are the most influential factors in the success or failure of the biosphere reserves. For success, the biosphere reserve concept needs to be clearly understood and applied through landscape zoning. Designated reserves then need a management system with inclusive good governance, strong participation and collaboration, adequate finance and human resource allocation and stable and responsible management and implementation. All rather obvious but it is difficult to achieve without commitment to the biosphere reserve concept by the governance authorities. Copyright © 2016 Elsevier Ltd. All rights reserved.

Aproximación turístico cultural para un patrimonio en vías de extinción: la arquitectura histórica en madera de Chetumal, Quintana Roo

Directory of Open Access Journals (Sweden)

Martín Manuel Checa Artasu

2012-01-01

Full Text Available La arquitectura histórica, en madera, de Chetumal está legalmente protegida. Tiene una consideración de patrimonio cultural. Sin embargo, una serie de políticas públicas erróneas han puesto su patrimonio en peligro de extinción a todo el reflejo de la historia y a la identidad de esta ciudad del caribe mexicano. Se propone un proyecto de Turismo cultural creado desde la especialización de este patrimonio. Se quiere así, poner en valor y proteger este patrimonio para las generaciones futuras, y sentar las bases de un posible proyecto de difusión para mostrarlo a los responsables de la ciudad y el Estado.

Application of ecological criteria in selecting marine reserves and developing reserve networks

Science.gov (United States)

Roberts, Callum M.; Branch, George; Bustamante, Rodrigo H.; Castilla, Juan Carlos; Dugan, Jenifer; Halpern, Benjamin S.; Lafferty, Kevin D.; Leslie, Heather; McArdle, Deborah; Ruckelshaus, Mary; Warner, Robert R.

2003-01-01

Marine reserves are being established worldwide in response to a growing recognition of the conservation crisis that is building in the oceans. However, designation of reserves has been largely opportunistic, or protective measures have been implemented (often overlapping and sometimes in conflict) by different entities seeking to achieve different ends. This has created confusion among both users and enforcers, and the proliferation of different measures provides a false sense of protection where little is offered. This paper sets out a procedure grounded in current understanding of ecological processes, that allows the evaluation and selection of reserve sites in order to develop functional, interconnected networks of fully protected reserves that will fulfill multiple objectives. By fully protected we mean permanently closed to fishing and other resource extraction. We provide a framework that unifies the central aims of conservation and fishery management, while also meeting other human needs such as the provision of ecosystem services (e.g., maintenance of coastal water quality, shoreline protection, and recreational opportunities). In our scheme, candidate sites for reserves are evaluated against 12 criteria focused toward sustaining the biological integrity and productivity of marine systems at both local and regional scales. While a limited number of sites will be indispensable in a network, many will be of similar value as reserves, allowing the design of numerous alternative, biologically adequate networks. Devising multiple network designs will help ensure that ecological functionality is preserved throughout the socioeconomic evaluation process. Too often, socioeconomic criteria have dominated the process of reserve selection, potentially undermining their efficacy. We argue that application of biological criteria must precede and inform socioeconomic evaluation, since maintenance of ecosystem functioning is essential for meeting all of the goals for

06 Roos 03.pmd

African Journals Online (AJOL)

Owner

2009-03-02

Mar 2, 2009 ... a complete breakdown of interest in his successful career, he leaves his old life and ... things British, he has never been regarded by them as “one of us” (Le .... woman who has “a baby every year by a different man,” the .... the scheming of the Belgian companies and Hammad, trying to obtain a face of re-.

Остальные номинанты на премию "Лучшее бетонное сооружение 2016"

Index Scriptorium Estoniae

2017-01-01

Arsenali keskus, Büroo 83 ärihoone, Norra maja bürohoone, City Residence kortermaja ja ärihoone, Hilton Tallinn Park Hotell, Hotell Lydia, eramu Hämariku 10, Järveküla kool, multikeskus Kvartal, korterelamu Mardi tänaval, Tartu mnt 52 A, B, C korterlamud, Novira Plaza büroo- ja kortermaja, Maarjamaa Hariduskolleegiumi õppehoone, ERḾi püsoekspositsioon Ajarada, rahvusarhiivi peahoone Noora, betoontee katselõik

Aasta betoonehitis 2016 ülejäänud nominendid

Index Scriptorium Estoniae

2017-01-01

Arsenali keskus, Büroo 83 ärihoone, Norra maja bürohoone, City Residence kortermaja ja ärihoone, Hilton Tallinn Park Hotell, Hotell Lydia, eramu Hämariku 10, Järveküla kool, multikeskus Kvartal, korterelamu Mardi tänaval, Tartu mnt 52 A, B, C korterlamud, Novira Plaza büroo- ja kortermaja, Maarjamaa Hariduskolleegiumi õppehoone, ERḾi püsoekspositsioon Ajarada, rahvusarhiivi peahoone Noora, betoontee katselõik

Elust pealinna ristteel = Zhizn na perekrestke stolitsõ / Veronika Nuter

Index Scriptorium Estoniae

Nuter, Veronika

2007-01-01

1980-ndate lõpul alanud ja 17 aastat kestnud Osten Tori ehituslugu. 2000. a. algatatakse detailplaneering kinnistule Pärnu mnt. 110 ja 110a, koostaja AB Künnapu & Padrik. Uue korterelamu arhitektuurse lahenduse saamiseks korraldatakse kolme Soome arhitektuuribüroo vahel konkurss, mille võidab Mustanen-Salminen-Vaarna OY ideekavand. Hoone projekti edasiarendamist jätkab Eesti büroo KPME OÜ. 2006. a. valminud hoone plussid ja miinused

Kohtujurist Ivo Raudjärv peab etteheiteid maksuametile põhjendatuiks / Ivo Raudjärv ; interv. Edith Kiilmaa

Index Scriptorium Estoniae

Raudjärv, Ivo, 1976-

2003-01-01

Maksumaksja intervjuu juristibüroo Raudjärv & Ko UÜ juhataja Ivo Raudjärvega. Kommentaarid: Lasse Lehis (TÜ finantsõiguse dotsent, Riigikohtu halduskolleegiumi nõunik) "Ivo Raudjärv - asendamatu asjatundja", Aivar Pau (Maksuameti pressiesindaja) "Maksuameti statistika põhineb jõustunud kohtulahenditel", Jüri Allikalt (Jüri Allikaltþi õigusbüroo jurist-maksukonsultant) "Analüütiline Ivo Raudjärv". Lisatud Ivo Raudjärve CV

Keskendudes protsessile = Focus on Process

Index Scriptorium Estoniae

2004-01-01

1996. a. arhitektide Juliet Bidgoodi ja Liza Fiori ning kunstnik Katherine Clarke'i loodud Inglise arhitektuuribüroo muf tutvustus ja intervjuu Liza Fioriga. Naistest koosnev büroo tegeleb avaliku sfääriga. muf-i töödest tutvustatakse muuseumipaviljoni St Albansis, 1997. a. alguse saanud Londoni Southwarki tänava ümberkujundamise projekti, ruumiinstallatsiooni "Purity and Tolerance", 2003. a. alustatud Londoni Tilbury linnaosa pargi projekti. 4 ill

Disaggregating reserve-to-production ratios: An algorithm for United States oil and gas reserve development

Science.gov (United States)

Williams, Charles William

Reserve-to-production ratios for oil and gas development are utilized by oil and gas producing states to monitor oil and gas reserve and production dynamics. These ratios are used to determine production levels for the manipulation of oil and gas prices while maintaining adequate reserves for future development. These aggregate reserve-to-production ratios do not provide information concerning development cost and the best time necessary to develop newly discovered reserves. Oil and gas reserves are a semi-finished inventory because development of the reserves must take place in order to implement production. These reserves are considered semi-finished in that they are not counted unless it is economically profitable to produce them. The development of these reserves is encouraged by profit maximization economic variables which must consider the legal, political, and geological aspects of a project. This development is comprised of a myriad of incremental operational decisions, each of which influences profit maximization. The primary purpose of this study was to provide a model for characterizing a single product multi-period inventory/production optimization problem from an unconstrained quantity of raw material which was produced and stored as inventory reserve. This optimization was determined by evaluating dynamic changes in new additions to reserves and the subsequent depletion of these reserves with the maximization of production. A secondary purpose was to determine an equation for exponential depletion of proved reserves which presented a more comprehensive representation of reserve-to-production ratio values than an inadequate and frequently used aggregate historical method. The final purpose of this study was to determine the most accurate delay time for a proved reserve to achieve maximum production. This calculated time provided a measure of the discounted cost and calculation of net present value for developing new reserves. This study concluded that

Statistical significance estimation of a signal within the GooFit framework on GPUs

Directory of Open Access Journals (Sweden)

Cristella Leonardo

2017-01-01

Full Text Available In order to test the computing capabilities of GPUs with respect to traditional CPU cores a high-statistics toy Monte Carlo technique has been implemented both in ROOT/RooFit and GooFit frameworks with the purpose to estimate the statistical significance of the structure observed by CMS close to the kinematical boundary of the J/ψϕ invariant mass in the three-body decay B+ → J/ψϕK+. GooFit is a data analysis open tool under development that interfaces ROOT/RooFit to CUDA platform on nVidia GPU. The optimized GooFit application running on GPUs hosted by servers in the Bari Tier2 provides striking speed-up performances with respect to the RooFit application parallelised on multiple CPUs by means of PROOF-Lite tool. The considerable resulting speed-up, evident when comparing concurrent GooFit processes allowed by CUDA Multi Process Service and a RooFit/PROOF-Lite process with multiple CPU workers, is presented and discussed in detail. By means of GooFit it has also been possible to explore the behaviour of a likelihood ratio test statistic in different situations in which the Wilks Theorem may or may not apply because its regularity conditions are not satisfied.

Velvet Creative Alliance

Index Scriptorium Estoniae

2007-01-01

Tallinnas Niine t. 11 asuva disainibüroo Velvet Creative Alliance sisekujundus, mille eest sisearhitekt Taavi Aunre (Boom) pälvis Eesti Sisearhitektide Liidu 2006. a. büroointerjööri preemia. Osa mööblist on valmistatud T. Aunre jooniste järgi. Graafilise disaini osa kavandas disainibüroo ise. T. Aunrest, tema tähtsamad tööd. Plaan, 9 värv. vaadet, foto T. Aunrest

Applicable technical method for freeze-substitution of high pressure ...

African Journals Online (AJOL)

bmshsj

2011-11-02

Quintana, 1994) are available for the microscopic visualization of intracellular organelles. Cryo- fixation, plunge freezing, propane jet freezing, cold metal block freezing, and high pressure freezing provide advantages over chemical ...

Brazilian uranium reserves

International Nuclear Information System (INIS)

Marques, J.P.M.

1981-01-01

Due to a growing demand of electric power to support Brasil's development, the use of nuclear energy will be indispensable. The nuclear fuel cycle for the production of energy, starts with the uranium exploration. The work performed in this field led to the discovery of several deposits in the country, which to-date totalize a reserve of 236,300t of U 308 , ranking Brazil in the 6th place among the nations of the western world holding uranium reserves. (Author) [pt

The Professional & the Personal: Worklife Balance and Mid-Level Student Affairs Administrators

OpenAIRE

Cameron, Tracey LaShawne

2011-01-01

The integration of work and family continues to be a challenge for women and men of the academy (Gatta & Roos, 2004). Much of the research on worklife balance in the post-secondary education setting focuses on the lives of instructional faculty (Bailyn, 2003; Bassett, 2005; Drago et al., 2006; Drago & Williams, 2000; Gatta & Roos, 2004; Massachusetts Institute of Technology, 1999; Ward & Wolf-Wendel, 2004). There is also a need to understand how university administrators juggle the demands of...

Firm heterogeneity, Rules of Origin and Rules of Cumulation

OpenAIRE

Bombarda , Pamela; Gamberoni , Elisa

2013-01-01

We analyse the impact of relaxing rules of origin (ROOs) in a simple setting with heterogeneous firms that buy intermediate inputs from domestic and foreign sources. In particular, we consider the impact of switching from bilateral to diagonal cumulation when using preferences (instead of paying the MFN tariff) involving the respect of rules of origin. We find that relaxing the restrictiveness of the ROOs leads the least productive exporters to stop exporting. The empirical part confirms thes...

Selgusid Tallinna balleti- ja muusikakoolide ühishoone rahvusvahelise arhitektuurivõistluse võitjad / M[argit] M[utso

Index Scriptorium Estoniae

Mutso, Margit, 1966-

2011-01-01

Tallinna Muusikakeskkooli, Georg Otsa nimelise Tallinna Muusikakooli ja Tallinna Balletikooli ühishoone arhitektuurikonkursi võitis Austria arhitektuuribüroo Atelier Thomas Pucher ZT GmbH (Thomas Pucher, Erich Ranegger, Robert Lamprecht, Jan Schrader, Elisabeth Weber) töö "Vaikuse aed". Teise koha pälvis arhitektuuribüroo Emil Urbel töö "Octopus", kolmanda koha Ninja Stuudio töö "Pausid ja poosid". Võistlustöid näeb Eesti Arhitektuurimuuseumis 15.06.-7.07.2011

Fractional Reserve in Banking System

OpenAIRE

Valkonen, Maria

2016-01-01

This thesis is aimed to provide understanding of the role of the fractional reserve in the mod-ern banking system worldwide and particularly in Finland. The fractional reserve banking is used worldwide, but the benefits of this system are very disputable. On the one hand, experts say that the fractional reserve is a necessary instrument for the normal business and profit making. On the other hand, sceptics openly criticize the fractional reserve system and blame it for fiat money (money n...

Micro-level stochastic loss reserving

NARCIS (Netherlands)

Antonio, K.; Plat, R.

2010-01-01

To meet future liabilities general insurance companies will set-up reserves. Predicting future cash-flows is essential in this process. Actuarial loss reserving methods will help them to do this in a sound way. The last decennium a vast literature about stochastic loss reserving for the general

Calculation program development for spinning reserve

International Nuclear Information System (INIS)

1979-01-01

This study is about optimal holding of spinning reserve and optimal operation for it. It deals with the purpose and contents of the study, introduction of the spinning reserve electricity, speciality of the spinning reserve power, the result of calculation, analysis for limited method of optimum load, calculation of requirement for spinning reserve, analysis on measurement of system stability with summary, purpose of the analysis, cause of impact of the accident, basics on measurement of spinning reserve and conclusion. It has the reference on explanation for design of spinning reserve power program and using and trend about spinning reserve power in Korea.

Assessing reserve-building pursuits and person characteristics: psychometric validation of the Reserve-Building Measure.

Science.gov (United States)

Schwartz, Carolyn E; Michael, Wesley; Zhang, Jie; Rapkin, Bruce D; Sprangers, Mirjam A G

2018-02-01

A growing body of research suggests that regularly engaging in stimulating activities across multiple domains-physical, cultural, intellectual, communal, and spiritual-builds resilience. This project investigated the psychometric characteristics of the DeltaQuest Reserve-Building Measure for use in prospective research. The study included Rare Patient Voice panel participants. The web-based survey included the Reserve-Building Measure with one-week re-test, measures of quality of life (QOL) and well-being (PROMIS General Health; NeuroQOL Cognitive Function and Positive Affect & Well-Being short-forms; Ryff Environmental Mastery subscale); and the Big Five Inventory-10 personality measure. Classical test theory and item response theory (IRT) analyses investigated psychometric characteristics of the Reserve-Building Measure. This North American sample (n = 592) included both patients and caregivers [mean age = 44, SD 19)]. Psychometric analyses revealed distinct subscales measuring current reserve-building activities (Active in the World, Games, Outdoors, Creative, Religious/Spiritual, Exercise, Inner Life, Shopping/Cooking, Passive Media Consumption,), past reserve-building activities (Childhood Activities, Achievement), and reserve-related person-factors (Perseverance, Current and Past Social Support, and Work Value). Test-retest stability (n = 101) was moderately high for 11 of 15 subscales (ICC range 0.78-0.99); four were below 0.59 indicating a need for further refinement. IRT analyses supported the item functioning of all subscales. Correlational analyses suggest the measure's subscales tap distinct constructs (range r = 0.11-0.46) which are not redundant with QOL, well-being, or personality (range r = 0.11-0.48). The Reserve-Building Measure provides a measure of activities and person-factors related to reserve that may potentially be useful in prospective research.

Influence of postprandial triglyceride-rich lipoproteins on lipid-mediated gene expression in smooth muscle cells of the human coronary artery.

Science.gov (United States)

Bermúdez, Beatriz; López, Sergio; Pacheco, Yolanda M; Villar, José; Muriana, Francisco J G; Hoheisel, Jöerg D; Bauer, Andrea; Abia, Rocío

2008-07-15

Postprandial triglyceride-rich lipoproteins (TRL) have a direct effect on vascular smooth muscle cells (SMC) and they increase the risk of atherogenesis. Here, we have tested the hypothesis that the different fatty acid composition of TRL is capable of differentially modifying gene expression in human coronary artery SMC (CASMC). In addition, the effect of TRL on cell proliferation and transcription factor activation was also evaluated. TRL were prepared from plasma of healthy volunteers after the ingestion of meals enriched in refined olive oil (ROO), butter or a mixture of vegetable and fish oils (VEFO). We use cDNA microarrays to determine the genes differentially expressed in TRL-treated CASMC. Correspondence cluster analysis demonstrated that TRL-butter, -ROO and -VEFO provoked different transcriptional profiles in CASMC. Sixty-six genes were regulated by TRL-butter, 55 by -ROO, and 47 by -VEFO. The data revealed that TRL-butter predominantly activated genes involved in the regulation of cell proliferation and inflammation. Likewise, TRL-VEFO induced the expression of genes implicated in inflammation, while TRL-ROO promoted a less atherogenic gene profile. The pathophysiological contribution of TRL to the development of atherosclerosis and the stability of atherosclerotic plaques may depend on the fatty acid composition of TRL. Our findings suggest a role for macrophage-inhibiting cytokine-1 (MIC-1) in coronary artery cardiovascular events.

Introducing optional reserve ratios in Hungary

OpenAIRE

Lóránt Varga

2010-01-01

As of the reserve maintenance period commencing in November 2010, Hungarian credit institutions will be free to decide whether to apply the previously valid 2% reserve ratio, or to apply a higher mandatory reserve ratio. Credit institutions required to hold reserves may select from reserve ratios of 2, 3, 4 and 5%, and may change their decision on a semi-annual basis. In line with the international best practice, the purpose of the MNB’s reserve requirement system is to support credit institu...

A Century in Reserve and Beyond

National Research Council Canada - National Science Library

Monagle, James P

2008-01-01

... Reserve, this Strategy Research Project (SRP) describes the role of the Army Reserve from its beginning as a reserve corps of medical doctors to that of a strategic reserve force, and then to its current operational role...

Aaviku fenomen = The Aaviku Phenomenon / Andres Kurg

Index Scriptorium Estoniae

Kurg, Andres, 1975-

2003-01-01

Aaviku elamurajoonist, kus on 67 maja, 6 erinevat tüüpi, ühe- ja kahekorruselised, 84-144 mø suured, hindadega vahemikus 760000-1200000 krooni. Projekteerija: Arhitektuuribüroo Emil Urbel. Autorid Emil Urbel ja Indrek Erm. Konstruktor Otto Pukk (OMK Inseneribüroo). Haljastus: Maria Pukk, Ivar Lubjak (Oaas Arhitektid). Projekt 2000-2001, valmis 2001-2003. Tüüpprojekti S-5 I ja II korruse plaan, tüüpprojekti V-2 põhiplaan, sisevaade, 5 välisvaadet

Läti avastab uuesti oma veeäärse võlu = Latvia Rediscovers its Waters / Ieva Zibarte

Index Scriptorium Estoniae

Zibarte, Ieva

2006-01-01

Riia, Liepaja ja Ventspilsi veeäärsete alade arendamise plaanidest. Riias ehitatakse Daugava kaldale Läti Rahvusraamatukogu (Gunnars Birkerts, projekt: 1980-ndad), tehissaarele AB Dam Riia Kontserdisaal (2006. a. arhitektuurikonkursi võitis Läti AB Silis, Zabers & Klava), Andrejostasse Kaasaegse Kunsti Muuseum, koha arengukava töötab välja Rem Koolhaasi OMA Hollandi büroo. Kliversala saare arendamiseks 2005. a. korraldatud workshop's sai Eesti büroo Kosmos eriauhinna. Liepaja kontserdisaali arhitektuurikonkursi võitis Volker Giencke

Reserve selection with land market feedbacks.

Science.gov (United States)

Butsic, Van; Lewis, David J; Radeloff, Volker C

2013-01-15

How to best site reserves is a leading question for conservation biologists. Recently, reserve selection has emphasized efficient conservation: maximizing conservation goals given the reality of limited conservation budgets, and this work indicates that land market can potentially undermine the conservation benefits of reserves by increasing property values and development probabilities near reserves. Here we propose a reserve selection methodology which optimizes conservation given both a budget constraint and land market feedbacks by using a combination of econometric models along with stochastic dynamic programming. We show that amenity based feedbacks can be accounted for in optimal reserve selection by choosing property price and land development models which exogenously estimate the effects of reserve establishment. In our empirical example, we use previously estimated models of land development and property prices to select parcels to maximize coarse woody debris along 16 lakes in Vilas County, WI, USA. Using each lake as an independent experiment, we find that including land market feedbacks in the reserve selection algorithm has only small effects on conservation efficacy. Likewise, we find that in our setting heuristic (minloss and maxgain) algorithms perform nearly as well as the optimal selection strategy. We emphasize that land market feedbacks can be included in optimal reserve selection; the extent to which this improves reserve placement will likely vary across landscapes. Copyright © 2012 Elsevier Ltd. All rights reserved.

Lithium reserves and resources

International Nuclear Information System (INIS)

Evans, R.K.

1978-01-01

As a result of accelerating research efforts in the fields of secondary batteries and thermonuclear power generation, concern has been expressed in certain quarters regarding the availability, in sufficient quantities, of lithium. As part of a recent study by the National Research Council on behalf of the Energy Research and Development Administration, a subpanel was formed to consider the outlook for lithium. Principal areas of concern were reserves, resources and the 'surplus' available for energy applications after allowing for the growth in current lithium applications. Reserves and resources were categorized into four classes ranging from fully proved reserves to resources which are probably dependent upon the marketing of co-products to become economically attractive. Because of the proprietary nature of data on beneficiation and processing recoveries, the tonnages of available lithium are expressed in terms of plant feed. However, highly conservative assumptions have been made concerning mining recoveries and these go a considerable way to accounting for total losses. Western World reserves and resources of all classes are estimated at 10.6 million tonnes Li of which 3.5 million tonnes Li are located in the United States. Current United States capacity, virtually equivalent to Western World capacity, is 4700 tonnes Li and production in 1976 approximated to 3500 tonnes Li. Production for current applications is expected to grow to approx. 10,000 tonnes in year 2000 and 13,000 tonnes a decade later. The massive excess of reserves and resources over that necessary to support conventional requirements has limited the amount of justifiable exploration expenditures; on the last occasion, there was a a major increase in demand (by the USAEA) reserves and capacity were increased rapidly. There are no foreseeable reasons why this shouldn't happen again when the need is clear. (author)

Impacto por huracanes en las praderas de Thalassia testudinum (Hydrocharitaceae en el Caribe Mexicano

Directory of Open Access Journals (Sweden)

Leonardo U Arellano-Méndez

2011-03-01

Full Text Available Thalassia testudinum es la macrófita dominante en Bahía de la Ascensión (Quintana Roo, México, se estudió para conocer su distribución espacio- temporal y determinar si fue afectada por el paso de huracanes que se han visto incrementados en fuerza y frecuencia por el cambio climático. Partiendo de una imagen Landsat ETM+de 2001 y usando información de grandes grupos morfofuncionales y de cobertura de T. testudinum adquiridas en 525 estaciones de muestreo, se obtienen las semillas para la clasificación supervisada de los hábitats bénticos (8 clases. Con el fin de cuantificar los cambios ocasionados por dos huracanes, se usaron dos imágenes, una de 1988 (Gilberto y 1995 (Roxanne y tres más (2003, 2005 y 2007 para monitoreo sin efectos meteorológicos mayores; a estos 6 mapas categóricos se les aplicó un análisis de Ecología del Paisaje usando 8 índices que describen las características espaciales, de estructura, función, cambio de los elementos (matriz-mancha-corredor, efectos sobre el ecosistema, conectividad, bordes, forma del parche y fragmentación del hábitat. Los modelos indican que T. testudinum puede clasificarse como un continuo (matriz, pues los fragmentos no se observan de forma intermitente, sino como una progresión de zonas mínimas a máximas en referencia a su cobertura (corredores ecológicos. No poseen una forma regular, indicando que los impactos son recientes y pueden ser debidos a efectos directos (huracanes de alta intensidad e indirectos (aporte de sedimentos. Los fragmentos de tipo "suelos desnudos" presentan una distribución discontinua, considerándose sitios que han permanecido estables en una larga escala de tiempo; las zonas con coberturas más densas ("camas", "praderas medias" y "praderas" presentan baja fragmentación y alta conexión de sus fragmentos. Las características de poseer un perímetro irregular y crecimiento de formal radial, sugieren que el impacto de los meteoros no tiene efecto

24 CFR 891.605 - Replacement reserve.

Science.gov (United States)

2010-04-01

... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Replacement reserve. 891.605... 8 Assistance § 891.605 Replacement reserve. (a) Establishment of reserve. The Borrower shall establish and maintain a replacement reserve to aid in funding extraordinary maintenance, and repair and...

24 CFR 891.405 - Replacement reserve.

Science.gov (United States)

2010-04-01

... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Replacement reserve. 891.405....405 Replacement reserve. (a) Establishment of reserve. The Owner shall establish and maintain a replacement reserve to aid in funding extraordinary maintenance and repair and replacement of capital items...

Giant Impacts on Earth-Like Worlds

Science.gov (United States)

Kohler, Susanna

2016-05-01

Earth has experienced a large number of impacts, from the cratering events that may have caused mass extinctions to the enormous impact believed to have formed the Moon. A new study examines whether our planets impact history is typical for Earth-like worlds.N-Body ChallengesTimeline placing the authors simulations in context of the history of our solar system (click for a closer look). [Quintana et al. 2016]The final stages of terrestrial planet formation are thought to be dominated by giant impacts of bodies in the protoplanetary disk. During this stage, protoplanets smash into one another and accrete, greatly influencing the growth, composition, and habitability of the final planets.There are two major challenges when simulating this N-body planet formation. The first is fragmentation: since computational time scales as N^2, simulating lots of bodies that split into many more bodies is very computationally intensive. For this reason, fragmentation is usually ignored; simulations instead assume perfect accretion during collisions.Total number of bodies remaining within the authors simulations over time, with fragmentation included (grey) and ignored (red). Both simulations result in the same final number of bodies, but the ones that include fragmentation take more time to reach that final number. [Quintana et al. 2016]The second challengeis that many-body systems are chaotic, which means its necessary to do a large number of simulations to make statistical statements about outcomes.Adding FragmentationA team of scientists led by Elisa Quintana (NASA NPP Senior Fellow at the Ames Research Center) has recently pushed at these challenges by modeling inner-planet formation using a code that does include fragmentation. The team ran 140 simulations with and 140 without the effects of fragmentation using similar initial conditions to understand how including fragmentation affects the outcome.Quintana and collaborators then used the fragmentation-inclusive simulations to

Reserves Represented by Random Walks

International Nuclear Information System (INIS)

Filipe, J A; Ferreira, M A M; Andrade, M

2012-01-01

The reserves problem is studied through models based on Random Walks. Random walks are a classical particular case in the analysis of stochastic processes. They do not appear only to study reserves evolution models. They are also used to build more complex systems and as analysis instruments, in a theoretical feature, of other kind of systems. In this work by studying the reserves, the main objective is to see and guarantee that pensions funds get sustainable. Being the use of these models considering this goal a classical approach in the study of pensions funds, this work concluded about the problematic of reserves. A concrete example is presented.

Improved Effectiveness of Reserve Forces During Reserve Duty Training.

Science.gov (United States)

Treadaway, Harry H.

The problem areas of motivation, job enrichment, recruiting, and retention are addressed from the viewpoint of the behavioral scientist. Special attention is given to relating job enrichment and motivation techniques, as successfully demonstrated in industry, to the United State Army Reserve. Research method utilized was a literature review…

FEATURES OF PERFECT AND IMPERFECT RESERVES AND RESERVE FUNDS WITHIN THE FEDERAL BUDGET OF THE RUSSIAN FEDERATION

Directory of Open Access Journals (Sweden)

Tatyana P. Lomakina

2018-03-01

Full Text Available During the past two years (2016–2017, the mass media was engaged in tense discussion about the status and flow of funds within the two reserves – the Reserve Fund of the Russian Federation and the National Welfare Fund. The Reserve Fund of the Russian Federation aroused especial worries among the experts. Its funds rapidly declined and by December 2017 they were fully used to cover the deficit of the domestic budget. In accordance with the law “On Amendments to the Budget Code of the Russian Federation in the Use of Oil and Gas Revenues of the Federal Budget,” from February 1, 2018, the Reserve Fund of the Russian Federation will cease to exist. For financial theory, this fact can serve as an illustration of the process of forming the foundations of budgetary financial security, their change over time, circumstances and options the government can take to modify them. At the same time, there are other types of financial resources within the federal budget. Their diversity necessitates their classification in order to identify groups and types with similar characteristics. However, in financial theory, many types of reserves are not described in detail, and some are not described at all. This article introduces the concepts of “perfect” and “imperfect” reserves, for their characterization as part of the federal budget. The Russian Reserve Fund and the National Welfare Fund (Sovereign Funds are the examples of perfect financial reserves. Imperfect reserves comprise a large group of reserve funds that are included in the federal budget, for example, the Reserve Fund of the President of the Russian Federation and the Reserve Fund of the Government of the Russian Federation, the Reserve Fund of the Government of the Russian Federation for the prevention and control of emergencies and impact of natural disasters. The introduction of new typological features largely clarifies the situation with increased attention to one type of reserves

Reserve valuation in electric power systems

Science.gov (United States)

Ruiz, Pablo Ariel

Operational reliability is provided in part by scheduling capacity in excess of the load forecast. This reserve capacity balances the uncertain power demand with the supply in real time and provides for equipment outages. Traditionally, reserve scheduling has been ensured by enforcing reserve requirements in the operations planning. An alternate approach is to employ a stochastic formulation, which allows the explicit modeling of the sources of uncertainty. This thesis compares stochastic and reserve methods and evaluates the benefits of a combined approach for the efficient management of uncertainty in the unit commitment problem. Numerical studies show that the unit commitment solutions obtained for the combined approach are robust and superior with respect to the traditional approach. These robust solutions are especially valuable in areas with a high proportion of wind power, as their built-in flexibility allows the dispatch of practically all the available wind power while minimizing the costs of operation. The scheduled reserve has an economic value since it reduces the outage costs. In several electricity markets, reserve demand functions have been implemented to take into account the value of reserve in the market clearing process. These often take the form of a step-down function at the reserve requirement level, and as such they may not appropriately represent the reserve value. The value of reserve is impacted by the reliability, dynamic and stochastic characteristics of system components, the system operation policies, and the economic aspects such as the risk preferences of the demand. In this thesis, these aspects are taken into account to approximate the reserve value and construct reserve demand functions. Illustrative examples show that the demand functions constructed have similarities with those implemented in some markets.

Naval Petroleum and Oil Shale Reserves

International Nuclear Information System (INIS)

1992-01-01

During fiscal year 1992, the reserves generated $473 million in revenues, a $181 million decrease from the fiscal year 1991 revenues, primarily due to significant decreases in oil and natural gas prices. Total costs were $200 million, resulting in net cash flow of $273 million, compared with $454 million in fiscal year 1991. From 1976 through fiscal year 1992, the Naval Petroleum and Oil Shale Reserves generated more than $15 billion in revenues and a net operating income after costs of $12.5 billion. In fiscal year 1992, production at the Naval Petroleum Reserves at maximum efficient rates yielded 26 million barrels of crude oil, 119 billion cubic feet of natural gas, and 164 million gallons of natural gas liquids. From April to November 1992, senior managers from the Naval Petroleum and Oil Shale Reserves held a series of three workshops in Boulder, Colorado, in order to build a comprehensive Strategic Plan as required by Secretary of Energy Notice 25A-91. Other highlights are presented for the following: Naval Petroleum Reserve No. 1--production achievements, crude oil shipments to the strategic petroleum reserve, horizontal drilling, shallow oil zone gas injection project, environment and safety, and vanpool program; Naval Petroleum Reserve No. 2--new management and operating contractor and exploration drilling; Naval Petroleum Reserve No. 3--steamflood; Naval Oil Shale Reserves--protection program; and Tiger Team environmental assessment of the Naval Petroleum and Oil Shale Reserves in Colorado, Utah, and Wyoming

Hydrocarbon Reserves: Abundance or Scarcity

Energy Technology Data Exchange (ETDEWEB)

NONE

2005-07-01

IFP and the OAPEC jointly organize a regular international seminar dealing with world oil-related problems appearing in the news. For the first time, this seminar has been opened to oil and gas company specialists, service companies, research centers and independents. This year's theme concerns oil and gas reserves: are they abundant or are we headed towards the shortages announced by some experts? This theme is especially topical in that: oil and gas currently meet two thirds of world energy needs and almost completely dominate the transport sector; the reserves declared by the OAPEC countries account for nearly half of world reserves; the price of a barrel of oil went through the roof in 2004; world energy demand is growing fast and alternative sources of energy are far from ready to take over from oil and gas in the next few decades. Since the reserves correspond to the volume it is technically and economically viable to produce, the seminar has, of course, dealt with the technical and economic questions that arise in connection with exploration and production, but it has also considered changes in the geopolitical context. Presentations by the leading companies of the OAPEC countries and by the IFP group were completed by presentation from the International Energy Agency (IEA), the United States Geological Survey (USGS), the IHS Energy Group, Total and Gaz de France. This document gathers the transparencies of the following presentations: Hydrocarbon reserves in OAPEC members countries: current and future (M. Al-Lababidi); Non OAPEC liquid reserves and production forecasts (Y. Mathieu); World oil and gas resources and production outlook (K. Chew); Global investments in the upstream (F. Birol); Total's policy in the oil and gas sector (C. de Margerie); Gaz de France's policy in the oil and gas sector (J. Abiteboul); NOC/IOC's opportunities in OPEC countries (I. Sandrea); Relationships between companies, countries and investors: How they may impact on the growth

Hydrocarbon Reserves: Abundance or Scarcity

International Nuclear Information System (INIS)

2005-01-01

IFP and the OAPEC jointly organize a regular international seminar dealing with world oil-related problems appearing in the news. For the first time, this seminar has been opened to oil and gas company specialists, service companies, research centers and independents. This year's theme concerns oil and gas reserves: are they abundant or are we headed towards the shortages announced by some experts? This theme is especially topical in that: oil and gas currently meet two thirds of world energy needs and almost completely dominate the transport sector; the reserves declared by the OAPEC countries account for nearly half of world reserves; the price of a barrel of oil went through the roof in 2004; world energy demand is growing fast and alternative sources of energy are far from ready to take over from oil and gas in the next few decades. Since the reserves correspond to the volume it is technically and economically viable to produce, the seminar has, of course, dealt with the technical and economic questions that arise in connection with exploration and production, but it has also considered changes in the geopolitical context. Presentations by the leading companies of the OAPEC countries and by the IFP group were completed by presentation from the International Energy Agency (IEA), the United States Geological Survey (USGS), the IHS Energy Group, Total and Gaz de France. This document gathers the transparencies of the following presentations: Hydrocarbon reserves in OAPEC members countries: current and future (M. Al-Lababidi); Non OAPEC liquid reserves and production forecasts (Y. Mathieu); World oil and gas resources and production outlook (K. Chew); Global investments in the upstream (F. Birol); Total's policy in the oil and gas sector (C. de Margerie); Gaz de France's policy in the oil and gas sector (J. Abiteboul); NOC/IOC's opportunities in OPEC countries (I. Sandrea); Relationships between companies, countries and investors: How they may impact on the growth

47 CFR 80.146 - [Reserved

Science.gov (United States)

2010-10-01

... MARITIME SERVICES Operating Requirements and Procedures Shipboard General Purpose Watches § 80.146 [Reserved] ... 47 Telecommunication 5 2010-10-01 2010-10-01 false [Reserved] 80.146 Section 80.146...

47 CFR 25.219 - [Reserved

Science.gov (United States)

2010-10-01

... 47 Telecommunication 2 2010-10-01 2010-10-01 false [Reserved] 25.219 Section 25.219 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES SATELLITE COMMUNICATIONS Technical Standards § 25.219 [Reserved] ...

47 CFR 80.145 - [Reserved

Science.gov (United States)

2010-10-01

... MARITIME SERVICES Operating Requirements and Procedures Special Procedures-Ship Stations § 80.145 [Reserved] Shipboard General Purpose Watches ... 47 Telecommunication 5 2010-10-01 2010-10-01 false [Reserved] 80.145 Section 80.145...

5 CFR 330.610 - [Reserved

Science.gov (United States)

2010-01-01

... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false [Reserved] 330.610 Section 330.610 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS RECRUITMENT, SELECTION, AND... Employees § 330.610 [Reserved] ...

5 CFR 330.603 - [Reserved

Science.gov (United States)

2010-01-01

... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false [Reserved] 330.603 Section 330.603 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS RECRUITMENT, SELECTION, AND... Employees § 330.603 [Reserved] ...