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Journal articles on the topic 'Central Nuclear de Almaraz'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

De Vicente, Gerardo, and Rubén Díez Fernández. "El Cabalgamiento de El Ibor: una falla cuaternaria a 20 km de la Central Nuclear de Almaraz." Geogaceta 69 (June 12, 2021): 3–6. http://dx.doi.org/10.55407/geogaceta102338.

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Se describe un cabalgamiento cuaternario, que corta a una brecha sedimentaria que recubre la terraza de +5 m del río Ibor, en el extremo occidental de los Montes de Toledo. El sistema de cabalgamientos descrito ha condicionado la localización de abanicos aluviales fini-neógenos (“raña”), por lo que ha de considerarse como activo durante los últimos 9 Ma. El sismo asociado, superficial, se estima de una magnitud entre M 6-6.5. La rotura se localiza a menos de 20 km de la Central Nuclear de Almaraz (Cáceres).

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2

ARAUJO, M., L. DEBARROS, A. TEIXEIRA, and A. DEMELO. "EDXRF study of Prehistoric artefacts from Quinta do Almaraz (Cacilhas, Portugal)." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 213 (January 2004): 741–46. http://dx.doi.org/10.1016/s0168-583x(03)01696-3.

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3

Baeza, A., L. M. del Río, E. García, A. Jiménez, C. Miró, J. M. Paniagua, and M. Rufo. "Temporal evolution of the3H levels in the surface waters around the Almaraz Nuclear Power Plant." Journal of Radioanalytical and Nuclear Chemistry 219, no. 1 (May 1997): 25–31. http://dx.doi.org/10.1007/bf02040260.

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4

Poncela, L. S. Quindós, P. L. Fernández Navarro, C. Sainz Fernández, J. L. Martin Matarranz, and J. Arteche García. "Natural radiation exposure in the Campo Arañuelo region in the surroundings of Almaraz nuclear power station (Spain)." Journal of Environmental Radioactivity 79, no. 3 (January 2005): 347–54. http://dx.doi.org/10.1016/j.jenvrad.2004.08.008.

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5

Baeza, A., M. Del Rio, C. Miro, and J. Paniagua. "Radiological impact of the Almaraz Nuclear Power Plant (Spain) during 1986 to 1989 on the surrounding environment." Journal of Radioanalytical and Nuclear Chemistry 152, no. 1 (November 1991): 175–88. http://dx.doi.org/10.1007/bf02042151.

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6

De Ville, Kenneth A. "Nothing to Fear But Fear itself: HIV-Infected Physicians and the Law of Informed Consent." Journal of Law, Medicine & Ethics 22, no. 2 (1994): 163–75. http://dx.doi.org/10.1111/j.1748-720x.1994.tb01291.x.

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On March 9, 1993, in the first ruling of its kind, the Maryland Court of Appeals declared that physicians and hospitals may be sued for failing to inform patients of a practitioner’s human immunodeficiency virus (HIV) status. What is more significant, these suits may be pursued even in instances when the physician has followed universal precautions and the patient did not contract the virus that causes acquired immunodeficiency syndrome (AIDS). The Maryland court addressed two central questions in Faya v. Almaraz. First, do HIV-infected physicians have a legal duty to inform their patients of their HIV status? And, second, can patients recover damages for fear induced by a physician’s conduct? While one finds numerous precedents that authorize actions to recover damages based purely on fear of disease and emotional distress, the Faya court’s holdings on the issue significantly expand the scope of potential liability. Moreover, the court’s analysis of the informed consent and HIV-infected physician issue is incomplete, inconsistent, and represents an unjustified and unwise departure from traditional informed consent theory. It, and its progeny, may have widespread and dire repercussions.

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7

Baeza, A., J. A. del Puerto, M. del Rio, C. Miro, F. Ortiz, and J. M. Paniagua. "Development and operativity of a real-time radiological monitoring network centered on the nuclear power plant of Almaraz, Spain." IEEE Transactions on Nuclear Science 40, no. 6 (1993): 2014–20. http://dx.doi.org/10.1109/23.273450.

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8

Batel, Susana, and Lúcia Pataco. "Portuguese media representations of nuclear facilities in Almaraz, Spain: beyond borders and risk perception (Representaciones en los medios portugueses de las plantas nucleares en Almaraz, España: más allá de las fronteras y la percepción del riesgo)." PsyEcology 11, no. 1 (October 17, 2019): 104–15. http://dx.doi.org/10.1080/21711976.2019.1644004.

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9

Azevedo, C. D. R., A. Baeza, M. Brás, T. Cámara, C. Cerna, E. Chauveau, J. M. Gil, et al. "TRITIUM - A Quasi Real-Time Low Activity Tritium Monitor for Water." EPJ Web of Conferences 225 (2020): 03008. http://dx.doi.org/10.1051/epjconf/202022503008.

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Tritium is released abundantly to the environment by nuclear power plants (NPP), as a product of neutron capture by hydrogen and deuterium. In normal running conditions, released cooling waters may contain levels of tritium close to or even larger than the maximum authorised limit for human consumption (drinking and irrigation). The European Council Directive 2013/51/Euratom requires a maximum level of tritium in water for human consumption lower than 100 Bq=L. Current monitoring of tritium activity in water by liquid scintillating method takes about two days and can only be carried out in a dedicated laboratory. This system is not appropriate for real time monitoring. At present, there exists no available detector device with enough sensitivity to monitor waters for human consumption with high enough sensitivity. The goal of the TRITIUM project is to build a tritium monitor capable to measure tritium activities with detection limit close to 100Bq=L, using instrumentation technique developed in recent years for Nuclear and Particle Physics, such as scintillating fibres and silicon photomultipliers (SiPM). In this paper the current status of the TRITIUM project is presented and he results of first prototypes are discussed. A detector system based on scintillating fibers read out either photomultiplier tubes (PMTs) or silicon photomultiplier (SiPM) arrays is under development and will be installed in the vicinity of Almaraz nuclear power plant (Cáceres, Spain) by the fourth term of 2019.

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10

Azevedo, C. D. R., A. Baeza, E. Chauveau, J. A. Corbacho, J. Díaz, J. Domange, C. Marquet, et al. "Development of a real-time tritium-in-water monitor." Journal of Instrumentation 18, no. 12 (December 1, 2023): T12008. http://dx.doi.org/10.1088/1748-0221/18/12/t12008.

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Abstract In this paper, we report the development and performance of a detector module envisaging a tritium-in-water real-time activity monitor. The monitor is based on modular detection units whose number can be chosen according to the required sensitivity. The full system is being designed to achieve a Minimum Detectable Activity (MDA) of 100 Bq/L of tritium-in-water activity which is the limit established by the E.U. Council Directive 2013/51/Euratom for water intended for human consumption. The same system can be used as a real-time pre-alert system for nuclear power plant regarding tritium-in water environmental surveillance. The first detector module was characterized, commissioned and installed immediately after the discharge channel of the Arrocampo dam (Almaraz nuclear power plant, Spain) on the Tagus river. Due to the high sensitivity of the single detection modules, the system requires radioactive background mitigation techniques through the use of active and passive shielding. We have extrapolated a MDA of 3.6 kBq/L for a single module being this value limited by the cosmic background. The obtained value for a single module is already compatible with a real-time environmental surveillance and pre-alert system. Further optimization of the single-module sensitivity will imply the reduction of the number of modules and the cost of the detector system.

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11

Maciejewski, Witold. "Central mass accumulation in nuclear spirals." Proceedings of the International Astronomical Union 3, S245 (July 2007): 161–64. http://dx.doi.org/10.1017/s1743921308017547.

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AbstractIn central regions of non-axisymmetric galaxies high-resolution hydrodynamical simulations indicate spiral shocks, which are capable of transporting gas inwards. The efficiency of transport is lower at smaller radii, therefore instead of all gas dropping onto the galactic centre, a roughly uniform distribution of high-density gas develops in the gaseous nuclear spiral downstream from the shock, and the shear in gas is very low there. These are excellent conditions for star formation. This mechanism is likely to contribute to the process of (pseudo-) bulge formation.

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12

Robinson, Richard, and Ruth Williams. "SRC1, central to the nuclear periphery." Journal of Cell Biology 182, no. 5 (September 1, 2008): 819. http://dx.doi.org/10.1083/jcb.1825iti5.

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13

Bayomy, Tamir. "Central Nuclear Pharmacy, Our lost Treasure." Egyptian Journal Nuclear Medicine 5, no. 5 (June 1, 2012): 1–4. http://dx.doi.org/10.21608/egyjnm.2012.5478.

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14

Gabaraev, B. A., Yu N. Kuznetsov, and A. A. Romenkov. "Nuclear central heating — prospects and solutions." Atomic Energy 103, no. 1 (July 2007): 526–31. http://dx.doi.org/10.1007/s10512-007-0083-2.

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15

Baeza, A., E. García, J. M. Paniagua, and A. Rodríguez. "Study of the comparative dynamics of the incorporation of tissue free-water tritium (TFWT) in bulrushes (Typha latifolia) and carp (Cyprinus carpio) in the Almaraz nuclear power plant cooling reservoir." Journal of Environmental Radioactivity 100, no. 3 (March 2009): 209–14. http://dx.doi.org/10.1016/j.jenvrad.2008.11.012.

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16

Danielewicz, Pawel, Arnau Rios, and Brent Barker. "Towards Quantum Transport for Central Nuclear Reactions." Journal of Physics: Conference Series 696 (March 2016): 012010. http://dx.doi.org/10.1088/1742-6596/696/1/012010.

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17

Kramer, John M. "Nuclear Power in Central and Eastern Europe." Problems of Post-Communism 42, no. 4 (July 1995): 37–41. http://dx.doi.org/10.1080/10758216.1995.11655624.

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18

Iarovaia, Olga V., Elizaveta P. Minina, Eugene V. Sheval, Daria Onichtchouk, Svetlana Dokudovskaya, Sergey V. Razin, and Yegor S. Vassetzky. "Nucleolus: A Central Hub for Nuclear Functions." Trends in Cell Biology 29, no. 8 (August 2019): 647–59. http://dx.doi.org/10.1016/j.tcb.2019.04.003.

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19

DREMIN, I. M. "THE WAKE IN MID-CENTRAL NUCLEAR COLLISIONS." Modern Physics Letters A 25, no. 08 (March 14, 2010): 591–95. http://dx.doi.org/10.1142/s021773231003272x.

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It is argued that PHENIX collaboration observed for the first time the radiation of the longitudinal wake oscillations formed behind the parton penetrating the quark–gluon medium. It shifts the maximum of a hump in two-particle correlations and changes its width in the case of some special orientation of the trigger particle.

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20

Friedrich, J., N. Voegler, and P. G. Reinhard. "Central depression of the nuclear charge distribution." Nuclear Physics A 459, no. 1 (October 1986): 10–34. http://dx.doi.org/10.1016/0375-9474(86)90053-9.

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21

FRANKLIN, C. I. V., M. J. REDMOND, and A. E. G. TANNENBERG. "Central Neurocytomay." Australasian Radiology 36, no. 2 (May 1992): 155–57. http://dx.doi.org/10.1111/j.1440-1673.1992.tb03107.x.

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22

Anagnostatos, G. S. "Multiharmonic nuclear Hamiltonian." Canadian Journal of Physics 70, no. 5 (May 1, 1992): 361–64. http://dx.doi.org/10.1139/p92-059.

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The present study successfully extends the independent-particle shell model by employing a multiharmonic oscillator potential for nuclei from 16O to 208Pb. Specifically, this study assumes a separate and different central potential for the nucleons of each shell, instead of a common central potential for all nucleons in a nucleus as is usually assumed by the conventional shell model. The present extension of the shell model leads to a simultaneous direct treatment of ground-state radii and binding energies for a sample of nuclei, i.e., 16O,28Si, 36Ar, 40Ar, 40Ca, 56Fe, 58Ni, 90Ni, 90Zr, 104Pd, 110Pd, 120Sn, 126Te,136Ba, 138Ba, 142Nd, 202Hg, and 208Pb.

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23

Díaz-Llanos Ros, Miguel, Manuel Linares Moya, and Carlos Sánchez Ortiz. "Elementos relevantes del proyecto de una central nuclear." Informes de la Construcción 41, no. 405 (February 28, 1990): 35–44. http://dx.doi.org/10.3989/ic.1990.v41.i405.1468.

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24

Landers, John A., Alex W. Hewitt, David P. Dimasi, Jac C. Charlesworth, Tania Straga, Richard A. D. Mills, Ravi Savarirayan, David A. Mackey, Kathryn P. Burdon, and Jamie E. Craig. "Heritability of Central Corneal Thickness in Nuclear Families." Investigative Opthalmology & Visual Science 50, no. 9 (September 1, 2009): 4087. http://dx.doi.org/10.1167/iovs.08-3271.

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25

San, Juan J., P. Navarro, and J. J. Terrádez. "BASAL CELL CARCINOMA WITH SCHWANNOID CENTRAL NUCLEAR PALISADING." American Journal of Dermatopathology 20, no. 6 (December 1998): 599. http://dx.doi.org/10.1097/00000372-199812000-00060.

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26

Martinovský, Petr, and Miroslav Mareš. "Political support for nuclear power in Central Europe." International Journal of Nuclear Governance, Economy and Ecology 3, no. 4 (2012): 338. http://dx.doi.org/10.1504/ijngee.2012.053572.

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27

Troshin, S. M., and N. E. Tyurin. "Central elastic scattering." Physics Letters B 816 (May 2021): 136186. http://dx.doi.org/10.1016/j.physletb.2021.136186.

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28

Bolen, John W., Maurice H. Lipper, and Dario Caccamo. "Intraventricular Central Neurocytoma." Journal of Computer Assisted Tomography 13, no. 3 (May 1989): 495–97. http://dx.doi.org/10.1097/00004728-198905000-00024.

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29

Goldberg, Herbert I., and Robert A. Zimmerman. "Central nervous system." Seminars in Roentgenology 22, no. 3 (July 1987): 205–12. http://dx.doi.org/10.1016/0037-198x(87)90034-4.

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30

Goy, José Luis, Raquel Cruz, Antonio Martínez-Graña, Virginia Valdés, and Mariano Yenes. "Geomorphological Map and Quaternary Landscape Evolution of the Monfragüe Park (Cáceres, Spain)." Sustainability 12, no. 23 (December 3, 2020): 10099. http://dx.doi.org/10.3390/su122310099.

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From the geomorphological cartography, the geometric and spatial distribution of the quaternary forms and deposits are analyzed, with special relevance to the fluvial terraces that allow obtaining the chronology of the successive landscape changes of the course of the Tagus River attributed to the activity of the Fault of Alentejo-Plasencia (APF). The “Appalachian” relief of Monfragüe National Park, constituting a series of quartzitic combs with direction NW, between which they find slopes, hills and valleys following the same direction, for the dismantlement of the Cenozoic cover that was covering the substratum (still present in the central sector) and encasement of the Rivers Tagus and Tiétar. The remains of fluvial terraces inside and outside the Park stand out at different heights and so they originate from different times and show different landscapes along the routes of the Tagus river and its movement over time. In the north end (basin of the Campo Arañuelo), there are remains of ten fluvial terraces of relative importance attributed to the River Tagus (with heights relative to the thalweg between 120 and 20 m). In the south edge, there are eight levels attributed to a former fluvial drainage network, which assimilates to the River Tagus, with the more recent level reaching over 280 m on the current river. Neotectonics readjustments that rejuvenated the relief produced the elevation of the socle and cover, at the time of diversions in the path of the fluvial network, up to the structure and encasement (for supertax and/or antecedence). During the Quaternary, the activity of the Alentejo-Plasencia Fault (APF) has given rise to palaeogeographic changes in the fluvial valley of the Tagus River. During the ancient Lower Pleistocene, its course passed south of the current one (Talaván-Torrejón el Rubio basin); at the end of the Lower Pleistocene, it came out crossing the syncline through the Boquerón porthole, and the meander that bordered the town of Almaraz was abandoned; at the beginning of the Middle Pleistocene, it changes its direction, from NE–SW to SE–NW, leaving the porthole and joining the Tiétar river within the Park; later it moves somewhat to the south. These changes in the route and the anomalous fitting of the course of the Tagus River into the Paleozoic substrate, have been attributed to the APF, which, through impulses, has had a great activity from the Lower Pleistocene to the Middle Pleistocene.

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31

Gajewska, Katarzyna A., John M. Haynes, and David A. Jans. "Nuclear Transporter IPO13 Is Central to Efficient Neuronal Differentiation." Cells 11, no. 12 (June 12, 2022): 1904. http://dx.doi.org/10.3390/cells11121904.

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Molecular transport between the nucleus and cytoplasm of the cell is mediated by the importin superfamily of transport receptors, of which the bidirectional transporter Importin 13 (IPO13) is a unique member, with a critical role in early embryonic development through nuclear transport of key regulators, such as transcription factors Pax6, Pax3, and ARX. Here, we examined the role of IPO13 in neuronal differentiation for the first time, using a mouse embryonic stem cell (ESC) model and a monolayer-based differentiation protocol to compare IPO13-/- to wild type ESCs. Although IPO13-/- ESCs differentiated into neural progenitor cells, as indicated by the expression of dorsal forebrain progenitor markers, reduced expression of progenitor markers Pax6 and Nestin compared to IPO13-/- was evident, concomitant with reduced nuclear localisation/transcriptional function of IPO13 import cargo Pax6. Differentiation of IPO13-/- cells into neurons appeared to be strongly impaired, as evidenced by altered morphology, reduced expression of key neuronal markers, and altered response to the neurotransmitter glutamate. Our findings establish that IPO13 has a key role in ESC neuronal differentiation, in part through the nuclear transport of Pax6.

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32

Watanabe, Hirofumi, Brian C. Belyea, Robert L. Paxton, Minghong Li, Bette J. Dzamba, Douglas W. DeSimone, R. Ariel Gomez, and Maria Luisa S. Sequeira-Lopez. "Renin Cell Baroreceptor, a Nuclear Mechanotransducer Central for Homeostasis." Circulation Research 129, no. 2 (July 9, 2021): 262–76. http://dx.doi.org/10.1161/circresaha.120.318711.

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Rationale: Renin-expressing cells are myoendocrine cells crucial for survival. They have been postulated to possess a pressure-sensing mechanism, a baroreceptor, which can detect slight changes in blood pressure and respond with precise and synchronized amounts of renin synthesized and released to the circulation to maintain blood pressure and fluid-electrolyte balance. The location and nature of this puzzling pressure-sensing structure have remained unknown as it was originally suggested over 60 years ago. Objective: To elucidate the location and structure of the renin cell baroreceptor. Methods and Results: We used a variety of genetically modified mice whereby renin cells were exposed in vivo to either low or high arterial pressure. In addition, we applied direct mechanical stimuli, that is, pneumatic pressure or stretch, directly to renin cells cultured under different conditions and substrata. Changes in perfusion pressure and/or direct mechanical stimuli induced significant changes in renin gene expression and the phenotype of renin cells. Importantly, the experiments show that the pressure-sensing mechanism (the baroreceptor) resides in the renin cells; it requires initial extracellular sensing by integrin β1 at the renin cell membrane and is transduced to the nuclear membrane and chromatin by lamin A/C. Conclusions: These studies show that the enigmatic baroreceptor is a nuclear mechanotransducer that resides in the renin cells per se and is responsible for the sensing and transmission of extracellular physical forces directly to the chromatin of renin cells via lamin A/C to regulate renin gene expression, renin bioavailability, and homeostasis.

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33

Anindita Banerjee. "Atoms, Aliens, and Compound Crises: Central Asia's Nuclear Fantastic." Science Fiction Studies 45, no. 3 (2018): 454. http://dx.doi.org/10.5621/sciefictstud.45.3.0454.

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34

McEwan, Louise M. "Unsuspected bilateral central acetabular fractures diagnosed with nuclear scintigraphy." Australasian Radiology 47, no. 4 (December 2003): 447–49. http://dx.doi.org/10.1046/j.1440-1673.2003.01218.x.

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35

Parrish, Scott. "Prospects for a central Asian nuclear‐weapon‐free zone." Nonproliferation Review 8, no. 1 (March 2001): 141–48. http://dx.doi.org/10.1080/10736700108436845.

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36

Ibragimova, Galiya. "NUCLEAR ENERGY IN CENTRAL ASIA: WHAT ARE THE PROSPECTS?" Security Index: A Russian Journal on International Security 17, no. 1 (March 2011): 53–73. http://dx.doi.org/10.1080/19934270.2011.554739.

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37

PECINKA, ALES, PAVLA SUCHÁNKOVÁ, MARTIN A. LYSAK, BOHUMIL TRÁVNÍČEK, and JAROSLAV DOLEŽEL. "Nuclear DNA Content Variation among Central European Koeleria Taxa." Annals of Botany 98, no. 1 (May 12, 2006): 117–22. http://dx.doi.org/10.1093/aob/mcl077.

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38

ISHII, NORIYOSHI, SINYA AOKI, and TETSUO HATSUDA. "LATTICE QCD CALCULATION OF NUCLEAR FORCES." Modern Physics Letters A 23, no. 27n30 (September 30, 2008): 2281–84. http://dx.doi.org/10.1142/s0217732308029198.

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Quenched lattice QCD results of nuclear forces are presented. Inter-nucleon potentials are constructed from Bethe-Salpeter wave functions of two nucleon states by using a Schrödinger-type equation. The results of the central force in 1S0 channel posses the repulsive core at short distance as well as the attraction at medium distance, both of which are enhanced in the light quark mass region. A preliminary result on the tensor force is also presented with the central force in 3S1 channel.

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39

Maruyama, Daisuke, Tetsuya Higashiyama, Toshiya Endo, and Shuh-ichi Nishikawa. "Fertilization-Coupled Sperm Nuclear Fusion Is Required for Normal Endosperm Nuclear Proliferation." Plant and Cell Physiology 61, no. 1 (August 14, 2019): 29–40. http://dx.doi.org/10.1093/pcp/pcz158.

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Abstract Angiosperms exhibit double fertilization, a process in which one of the sperm cells released from the pollen tube fertilizes the egg, while the other sperm cell fertilizes the central cell, giving rise to the embryo and endosperm, respectively. We have previously reported two polar nuclear fusion-defective double knockout mutants of Arabidopsis thaliana immunoglobulin binding protein (BiP), a molecular chaperone of the heat shock protein 70 (Hsp70) localized in the endoplasmic reticulum (ER), (bip1 bip2) and its partner ER-resident J-proteins, ERdj3A and P58IPK (erdj3a p58ipk). These mutants are defective in the fusion of outer nuclear membrane and exhibit characteristic seed developmental defects after fertilization with wild-type pollen, which are accompanied by aberrant endosperm nuclear proliferation. In this study, we used time-lapse live-cell imaging analysis to determine the cause of aberrant endosperm nuclear division in these mutant seeds. We found that the central cell of bip1 bip2 or erdj3a p58ipk double mutant female gametophytes was also defective in sperm nuclear fusion at fertilization. Sperm nuclear fusion was achieved after the onset of the first endosperm nuclear division. However, division of the condensed sperm nucleus resulted in aberrant endosperm nuclear divisions and delayed expression of paternally derived genes. By contrast, the other double knockout mutant, erdj3b p58ipk, which is defective in the fusion of inner membrane of polar nuclei but does not show aberrant endosperm nuclear proliferation, was not defective in sperm nuclear fusion at fertilization. We thus propose that premitotic sperm nuclear fusion in the central cell is critical for normal endosperm nuclear proliferation.

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40

Kehler, C. Robert. "Nuclear Weapons & Nuclear Use." Daedalus 145, no. 4 (September 2016): 50–61. http://dx.doi.org/10.1162/daed_a_00411.

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While nuclear weapons were conceived to end a war, in the aftermath of their operational use at Hiroshima and Nagasaki, they became the central (and controversial) means to prevent a war. Nuclear deterrence formed the foundation of U.S. Cold War doctrine and the basis of an extended security guarantee to our allies. But the Cold War ended one-quarter century ago, and questions about the efficacy of deterrence, the need for nuclear weapons, and the ethics surrounding them have resurfaced as some call for further major reductions in inventory or the complete elimination of the U.S. nuclear arsenal. Discussed from the perspective of a military practitioner, this essay highlights the continuing need for U.S. nuclear weapons in a global security environment that is highly complex and uncertain, and describes the means by which the credibility of the nuclear portion of the strategic deterrent is being preserved even as the role and prominence of these weapons have been reduced.

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41

Mauricio-Castillo, J. A., G. R. Argüello-Astorga, A. G. Alpuche-Solís, C. T. Monreal-Vargas, O. Díaz-Gómez, and R. De La Torre-Almaraz. "First Report of Tomato severe leaf curl virus in México." Plant Disease 90, no. 8 (August 2006): 1116. http://dx.doi.org/10.1094/pd-90-1116a.

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San Luis Potosí and Morelos are states situated in the north-central and south-central regions of Mexico, respectively, where a considerable area of agricultural land is occupied by tomato crops. In the summer of 2005, stunting and leaf curling/crumpling symptoms were observed in several tomato (Lycopersicon esculentum L.) fields in Rioverde, San Luis Potosí (Rioverde-SLP). These symptoms and the existence of large populations of whiteflies (Bemisia tabaci Gennadius) in the affected fields suggested a viral etiology. Symptomatic tomato leaves collected during July and September of 2005 from several locations throughout the Rioverde area were assessed for begomovirus presence using polymerase chain reaction (PCR) with three sets of degenerate primers: PAL1v1978/PAR1c496 (3), pCP70for/pCP70rev (1), and two new primers that specifically amplify DNA from viruses of the Squash leaf curl virus (SLCV) lineage, prSL060-for (CGGCGTTRTRRTARACGTCGTC) and prSL150-rev (GCWGCC-AAAGACACCAAYGCCGT). These primers amplify overlapping DNA segments encompassing the complete begomovirus genome A. Amplicons were cloned into pGEM-T easy vector (Promega, Madison, WI) and sequenced. The complete sequence for component A of isolates from two different fields in the Rioverde Valley were assembled and compared with sequences available in the GenBank database using BlastN and the Clustal alignment method (MegAlign, DNASTAR, Madison, WI). The 2588-bp sequence of the Rioverde-SLP1 isolate (Accession No. DQ347946) and the 2594-bp sequence of Rioverde-SLP2 isolate (Accession No. DQ347947) were 97.2% identical. Both field isolates displayed the highest similarity (97.1 and 97.3% nt identity, respectively) with Tomato severe leaf curl virus from Guatemala (ToSLCV-GT96; Accession No. AF130415). Similarity of SLP isolates with Tomato severe leaf curl virus from Nicaragua (Accession Nos. AJ508784 and AJ508785) was significantly lower, 89.9 and 89.7%, respectively. A parallel survey of tomato fields in Xochitepec, Morelos, located 550 km southeast of Rioverde-SLP, was performed during September, 2005. Leaf samples from six plants displaying leaf curling/crumpling symptoms were collected and assessed for begomovirus presence using PCR with the degenerate primers, prC889 (4) and prSL060-for. The 1.4-kb PCR fragments obtained were subsequently analyzed by restriction fragment length polymorphism using MspI and HhaI. Restriction fragment patterns were the same for all amplicons. The 1435-bp DNA A sequence of one isolate from Morelos was determined (Accession No. DQ267157) and compared with sequences available for other begomoviruses using Clustal alignment method. The highest identity (98%) was with ToSLCV-SLP and ToSLCV-GT96 isolates. These data confirm that ToSLCV is infecting tomato in different horticultural regions of Mexico. The presence of this begomovirus has been previously reported in Honduras, Guatemala, and Nicaragua (2). To our knowledge, this is the first report of ToSLCV in Mexico. References: (1) R. De La Torre-Almaraz et al. Plant Dis. 90:378, 2006. (2) M. K. Nakhla et al. Acta Hort. (ISHS) 695:277. Proc. First Int. Symp. on Tomato Diseases. M. T. Momol et al., eds., 2005. (3) M. Rojas et al. Plant Dis. 77:340, 1993. (4) S. D. Wyatt and J. K. Brown. Phytopathology 86:1288, 1996.

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Mauricio-Castillo, J. A., G. R. Argüello-Astorga, S. Ambriz-Granados, A. G. Alpuche-Solís, and C. T. Monreal-Vargas. "First Report of Tomato golden mottle virus on Lycopersicon esculentum and Solanum rostratum in Mexico." Plant Disease 91, no. 11 (November 2007): 1513. http://dx.doi.org/10.1094/pdis-91-11-1513b.

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The Rioverde Valley is an important farming area of the San Luis Potosi State in the north-central region of Mexico, where a variety of horticultural crops (i.e., tomato, pepper, cucumber, and watermelon) are annually cultivated. In the summer of 2005, a number of plants exhibiting a variety of symptoms, including leaf yellowing, curling, and stunted growth, were observed in several tomato (Lycopersicon esculentum L.) fields. The presence of whiteflies (Bemisia tabaci Genn.) and symptoms seemed to suggest a begomoviral etiology. Leaves of 12 symptomatic tomato plants and seven plants of the weed Solanum rostratum (Dunal) growing into the same area were collected in July and September from several fields throughout the Rioverde area and assessed for the presence of begomoviruses (genus Begomovirus, family Geminiviridae) by PCR using the degenerate primers prRepDGR (CCTCCTCTAGCASWTCTNCCGTC), SL2050 (2), and prC889 (3). Amplicons of 1.4 kb were derived from viral DNA-A present in all examined S. rostratum and tomato samples, which were cloned into pGEM-T Easy Vector (Promega, Madison, WI) and subsequently analyzed by restriction fragment length polymorphism (RFLP) using MspI and HinfI. Several restriction fragment patterns were observed among the cloned PCR products, hence indicating the occurrence of different begomoviruses in the sampled fields. Sequencing of amplicons derived from one S. rostratum plant revealed the concurrent presence of Tomato severe leaf curl virus (ToSLCV; GenBank Accession No. DQ347946; [2]) and a distinct virus (GenBank Accession No. EF501978) displaying a high sequence identity with Tomato golden mottle virus from Guatemala (ToGMoV-GT94-R2; GenBank Accession No. AF32852). Restriction fragment patterns identical to that of the ToGMoV-like isolate were found in PCR clones from three additional S. rostratum plants and five tomato samples. A set of partially overlapping PCR products of 1.8 and 1.4 kb encompassing the complete DNA-A component of ToGMoV were obtained from one tomato sample by using two pairs of degenerate primers, prRepQGR-rev and prCP70 (1) and prRepDGR and prC889. Amplicons were cloned, sequenced, and compared with viral sequences available in the GenBank database using BlastN and Clustal V alignments (MegAlign, DNASTAR, Madison, WI). The 2,614-bp DNA-A sequence of the Rioverde isolate (GenBank Accession No. DQ520943) displays 93% sequence identity with the Guatemalan isolate of ToGMoV. In addition, a number of B. tabaci specimens of unidentified biotype were collected in one tomato field and total DNA was isolated from them by a modified Dellaporta method. Amplification of viral DNA present in the whiteflies was carried out and the PCR products were cloned and sequenced. One of the begomoviral DNA-A genomes isolated from the whiteflies (GenBank Accession No. EF501976) displayed 99% sequence identity with the virus isolated from plants. Previously, ToGMoV had been found only in Central America ( http://gemini.biosci.arizona.edu/viruses ), but this report considerably expands its known geographical distribution. References: (1) R. De La Torre-Almaraz et al. Plant Dis. 90:378, 2006. (2) J. A. Mauricio-Castillo et al. Plant Dis. 90:1116, 2006. (3) S. D. Wyatt and J. K. Brown. Phytopathology 86:1288, 1996.

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Rademakers, Ronald P., Marjo S. van der Knaap, Bernard Verbeeten, Peter G. Barth, and Jacob Valk. "Central Cortico-Subcortical Involvement." Journal of Computer Assisted Tomography 19, no. 2 (March 1995): 256–63. http://dx.doi.org/10.1097/00004728-199503000-00017.

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Rumboldt, Zoran, Majda M. Thurnher, and Rakesh K. Gupta. "Central Nervous System Infections." Seminars in Roentgenology 42, no. 2 (April 2007): 62–91. http://dx.doi.org/10.1053/j.ro.2006.08.012.

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Torres, Carlos, Roy Riascos, Ramon Figueroa, and Rakesh K. Gupta. "Central Nervous System Tuberculosis." Topics in Magnetic Resonance Imaging 23, no. 3 (June 2014): 173–89. http://dx.doi.org/10.1097/rmr.0000000000000023.

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Yuh, William T. C., and Nina A. Mayr. "Central Nervous System Tumor." Topics in Magnetic Resonance Imaging 17, no. 2 (April 2006): 51–52. http://dx.doi.org/10.1097/rmr.0b013e31802f7925.

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Funaki, Brian. "Central Venous Access." American Journal of Roentgenology 178, no. 6 (June 2002): 1480. http://dx.doi.org/10.2214/ajr.178.6.1781480.

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Nashef, S. A. M., and A. D. Ferguson. "Occult central pneumothorax." British Journal of Radiology 58, no. 692 (August 1985): 772–74. http://dx.doi.org/10.1259/0007-1285-58-692-772.

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Simkin, S. M. "Galaxy Interactions and Strength of Nuclear Activity." International Astronomical Union Colloquium 124 (1990): 399–402. http://dx.doi.org/10.1017/s0252921100005406.

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Almost a decade ago, the morphological similarities between patterns seen in Seyfert galaxies and those produced by gravitational forcing led to the suggestion that Seyfert activity might be fueled by material inflow induced by either a central bar or a perturbing companion (Simkin, Su, and Schwarz, 1980). More recent theoretical calculations suggest that such a feeding mechanism may involve a central bar-like, structure even if initially induced by the tidal effects of a companion galaxy (Noguchi, 1988a,b).

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Therme, Clément, Kjølv Egeland, and Hebatalla Taha. "Seizing Nuclear Tehran: Obstacles to Understanding Iranian Nuclear Activities." Middle East Journal 76, no. 2 (August 31, 2022): 159–78. http://dx.doi.org/10.3751/76.2.11.

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In this article, we interrogate some of the central assumptions in the literature on Iran's nuclear behavior, including the role of the United States as a benevolent hegemon, the revisionist character of the Iranian government, the utility and efficacy of sanctions, and the widespread assumption that Iran is bent on obtaining and even using the bomb. We maintain that contemporary debates on the Iranian nuclear issue display similarities to Kremlinology during the Cold War, being deeply politicized and subject to bias and self-censorship. We conclude by highlighting ways for scholars to recast the discussion.

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