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Sample records for chico estado miranda

  1. An Examination of Juveniles' Miranda Abilities: Investigating Differences in Miranda Recall and Reasoning.

    PubMed

    Rogers, Richard; Steadham, Jennifer A; Carter, Rachel M; Henry, Sarah A; Drogin, Eric Y; Robinson, Emily V

    2016-07-01

    Juvenile suspects are routinely expected to possess an accurate recall of written or oral Miranda warnings. This study addresses the Miranda-related comprehension recall and reasoning of legally involved juveniles. It is the first juvenile research to compare systematically two levels of complexity for Miranda warnings with the three modalities (oral, written, or combined) of administration. Unexpectedly, easily read written warnings marginally outperformed the combined modality. In order to examine Miranda reasoning, three juvenile groups were operationalized: impaired, questionable, and likely adequate. Predictably, the impaired and questionable groups possessed significantly lower verbal abilities than the likely-adequate reasoning group. In addition, the likely-adequate group exhibited the strongest appreciation of the adversarial context in which Miranda waiver decisions are rendered. The discussion addresses the marked disparities in Miranda recall from a total recall versus component-by-component understanding of Miranda rights. It also considers more generally how crucially important Miranda misconceptions might be remedied. Copyright © 2016 John Wiley & Sons, Ltd. PMID:27296519

  2. Modelling the disruption and reaccumulation of Miranda

    NASA Astrophysics Data System (ADS)

    Marzari, F.; Dotto, E.; Davis, D. R.; Weidenschilling, S. J.; Vanzani, V.

    1998-05-01

    The heavily cratered surfaces of the largest Uranian satellites and the unusual surface geology of Miranda suggest that Miranda could have been catastrophically disrupted by collision and then reaccumulated over solar system history (Smith et al., 1986; Mckinnon et al., 1991). Using the numerical model described by Marzari et al. (1995) we have simulated the breakup of Miranda by a high velocity impact and computed the size and orbital distributions of the collisional fragments. These distributions have been adopted as realistic initial conditions for the numerical algorithm of Spaute et al. (1991) with which we have simulated the reaccumulation of the satellite from the ring of debris. Our results show that the reaccumulation of Miranda occurs on a short timescale ( ~ 10(3) years), in spite of the initial large dispersion of the ring debris and the presence of Ariel at the outer border of the ring. However the reaccumulation process depends strongly on the poorly known outcomes of collisions. If collisions dominately result in accretion, the reaccumulation of Miranda proceeds as an orderly growth with larger bodies accreting mass from the smaller ones. If cratering and fragmentation are included, the reaccumulation is characterized by two stages: an initial stage during which shattering dominates and all bodies smaller than few tens km are destroyed. In the second stage the large surviving fragments grow by accumulating the small comminuted fragments and finally, colliding with each other, re-build a new Miranda. Different breakup reaccumulation scenarios have been analyzed to account for the variation of some physical parameters.

  3. Development and initial validation of the Miranda vocabulary scale.

    PubMed

    Rogers, Richard; Hazelwood, Lisa L; Sewell, Kenneth W; Blackwood, Hayley L; Rogstad, Jill E; Harrison, Kimberly S

    2009-10-01

    Miranda vocabulary forms the essential foundation for Miranda comprehension and subsequent decisions to exercise or waive Miranda rights. The purpose of the current study is the development of the Miranda Vocabulary Scale (MVS), designed to evaluate key vocabulary words found in Miranda warnings and waivers across American jurisdictions. A preliminary list of MVS words was refined by expert ratings and by each word's discriminability between failed and good Miranda comprehension. Miranda and other measures were collected at multiple sites on 376 pretrial defendants. With further refinements, the MVS is composed of 36 words with excellent scale homogeneity and interrater reliability (r = .99). It also demonstrated good convergent and discriminant validity for cognitive abilities and psychological impairment.

  4. Investigating Miranda waiver decisions: An examination of the rational consequences.

    PubMed

    Blackwood, Hayley L; Rogers, Richard; Steadham, Jennifer A; Fiduccia, Chelsea E

    2015-01-01

    Millions of custodial suspects waive their Miranda rights each year without the benefit of legal counsel. Miranda understanding, appreciation, and reasoning abilities are essential to courts' acceptance of Miranda waivers (Grisso, 2003; Rogers & Shuman, 2005). The question posed to forensic psychologists and psychiatrists in the disputed Miranda waivers is whether a particular waiver decision was knowing, intelligent, and voluntary. Despite the remarkable development of Miranda research in recent decades, studies have generally focused on understanding and appreciation of Miranda rights, but with comparatively minimal emphasis on Miranda reasoning and attendant waiver decisions. Research on defendants' decisional capacities constitutes a critical step in further developing theoretical and clinical models for Miranda waiver decisions. The current study evaluated Miranda waiver decisions for 80 pretrial defendants from two Oklahoma jails to study systematically how rational decision abilities affect defendants' personal waiver decisions. In stark contrast to what was expected, many defendants were able to identify a rational decisional process in their own legal cases, yet cast such reasoning aside and chose a completely contradictory Miranda waiver decision.

  5. A New Exploration Of Miranda's Dynamical History

    NASA Astrophysics Data System (ADS)

    Noyelles, Benoit; Verheylewegen, E.; Lemaitre, A.

    2012-10-01

    We consider the N-body problem of Uranus with its five main satellites Miranda, Ariel, Umbriel, Titania and Oberon. Previous studies have already treated the problem and explained in details the geophysical observations of the surface structure by the modifications on orbital elements of the satellites. These modifications are consequences of the passage through a mean-motion resonance in the past history of the system. The main responsible is the high inclination of Miranda (4.338°), probably due to a mean-motion resonance 3:1 with Umbriel. We re-analyse the problem with new computing tools and improve some previous results by a new global visualization with chaos and orbital scales maps. This new type of representations allows us to detect numerous secondary resonance zones confirmed by frequency analysis. We already know the important role of the secondary resonances in the problem: they cause the escape from the primary resonance and explain the high value of the current inclination of Miranda. We highlight the frequencies of the secondary resonance arguments and clearly identify the associated libration. These numerical results are validated by an analytical model allowing us to approximate the libration arguments in the primary resonance zones. A commensurability between the libration period and the circulation period of the following primary resonance explains the presence of a secondary resonance zone.

  6. Miranda Rights Comprehension in Young Adults with Specific Language Impairment

    ERIC Educational Resources Information Center

    Rost, Gwyneth C.; McGregor, Karla K.

    2012-01-01

    Purpose: The purpose of this study was to determine whether citizens with language impairment understand legal rights as conveyed in Miranda warnings. Method: Grisso's Instruments for Assessing Understanding and Appreciation of Miranda Rights (1998) was administered to 34 young adults, half of whom met the diagnostic criteria for specific language…

  7. Miranda's Geologic History (variety of terrain)

    NASA Technical Reports Server (NTRS)

    1986-01-01

    Miranda reveals a complex geologic history in this view, acquired by Voyager 2 on Jan. 24, 1986, around its close approach to the Uranian moon. At least three terrain types of different age and geologic style are evident at this resolution of about 700 meters (2,300 feet). Visible in this clear-filter, narrow-angle image are, from left: (1) an apparently ancient, cratered terrain consisting of rolling, subdued hills and degraded medium-sized craters (2) a grooved terrain with linear valleys and ridges developed at the expense of, or replacing, the first terrain type: and (3) a complex terrain seen along the terminator, in which intersecting curvilinear ridges and troughs are abruptly truncated by the linear, grooved terrain. Voyager scientists believe this third terrain type is intermediate in age between the first two. The Voyager project is managed for NASA by the Jet Propulsion Laboratory.

  8. Partnerships through Innovative Telecommunications at California State University, Chico.

    ERIC Educational Resources Information Center

    Meuter, Ralph F.; And Others

    California State University (CSU), Chico, has used its relatively isolated location to develop an extensive educational system known as "Instructional Television for Students" (ITFS). Currently, the university is launching plans for new partnerships utilizing satellite technology for the delivery of educational programs. Over the years, the ITFS…

  9. Revenge of tiny Miranda. [resonance model for Uranus ring

    NASA Technical Reports Server (NTRS)

    Goldreich, P.; Nicholson, P.

    1977-01-01

    An investigation is conducted concerning the resonance model for the rings of Uranus proposed by Dermott and Gold (1977). Dermott and Gold had dismissed resonances involving Miranda as insignificant. The reported investigation shows, however, that the strongest resonances are all associated with Miranda. It is also found that the hypothesis that the rings are made up of librating particles is incorrect. If the ring positions are determined by resonances, the control is more subtle than previously suggested. One possibility is that the rings are the crests of nonlinear density waves in an optically thin disk of particles.

  10. Cratering history of Miranda: Implications for geologic processes

    USGS Publications Warehouse

    Plescia, J.B.

    1988-01-01

    Miranda's surface is divisible into cratered terrain and coronae. The cratered terrain is the most heavily cratered of the terrains and presumably is the oldest. The frequency of craters in the cratered terrain is variable and related to position on the satellite. The coronae are also variably cratered. Elsinore and Arden Coronae have similar crater frequencies and may have formed simultaneously. They are of intermediate agompared to the cratered terrain and to Inverness Corona, which is the youngest major terrain. Graben formation appears to have occured both before and after the formation of the coronae reflecting periods of global expansion. Miranda's surfaces are, in general, the least cratered and therefore inferred to be the youngest within the Uranian system. ?? 1988.

  11. Selection, recombination and demographic history in Drosophila miranda.

    PubMed

    Bachtrog, Doris; Andolfatto, Peter

    2006-12-01

    Selection, recombination, and the demographic history of a species can all have profound effects on genomewide patterns of variability. To assess the impact of these forces in the genome of Drosophila miranda, we examine polymorphism and divergence patterns at 62 loci scattered across the genome. In accordance with recent findings in D. melanogaster, we find that noncoding DNA generally evolves more slowly than synonymous sites, that the distribution of polymorphism frequencies in noncoding DNA is significantly skewed toward rare variants relative to synonymous sites, and that long introns evolve significantly slower than short introns or synonymous sites. These observations suggest that most noncoding DNA is functionally constrained and evolving under purifying selection. However, in contrast to findings in the D. melanogaster species group, we find little evidence of adaptive evolution acting on either coding or noncoding sequences in D. miranda. Levels of linkage disequilibrium (LD) in D. miranda are comparable to those observed in D. melanogaster, but vary considerably among chromosomes. These patterns suggest a significantly lower rate of recombination on autosomes, possibly due to the presence of polymorphic autosomal inversions and/or differences in chromosome sizes. All chromosomes show significant departures from the standard neutral model, including too much heterogeneity in synonymous site polymorphism relative to divergence among loci and a general excess of rare synonymous polymorphisms. These departures from neutral equilibrium expectations are discussed in the context of nonequilibrium models of demography and selection.

  12. Fluid volcanism on Miranda and Ariel - Flow morphology and composition

    NASA Astrophysics Data System (ADS)

    Schenk, P. M.

    1991-02-01

    Several types of volcanic units have been recognized on the icy Uranian satellites Miranda and Ariel. On Miranda, ridges characterized by crest grooves are up to 10 km wide and 500 m high. A continuous flat-topped flow band also 10 km wide and 500 m high forms the outer southern margin of Elsinore Corona, which appears to comprise coalesced flow bands and ridges. On Ariel, in addition to at least one ridge unit similar to those on Miranda, flood plains material has covered the floors of deep chasmata (grabens) and an irregular depression. Flows on both satellites are characterized by linear vent geometries and distinct topographic margins, which indicate extrusion of a relatively viscous material. The topography of the flows can be used to estimate flow viscosity or yield strength using a Bingham plastic model. Extrusion viscosity estimates, incorporating plausible volcanologically based emplacement time scales and a rigid crust correction, range from 10 MP to 1 GP (10 TP in the unlikely absence of a chilled crust). Viscosity estimates are dependent on the assumed emplacement time scale, however, and could be as high as 10 PP, if a solid-state-based time scale is assumed.

  13. Fluid volcanism on Miranda and Ariel - Flow morphology and composition

    NASA Technical Reports Server (NTRS)

    Schenk, Paul M.

    1991-01-01

    Several types of volcanic units have been recognized on the icy Uranian satellites Miranda and Ariel. On Miranda, ridges characterized by crest grooves are up to 10 km wide and 500 m high. A continuous flat-topped flow band also 10 km wide and 500 m high forms the outer southern margin of Elsinore Corona, which appears to comprise coalesced flow bands and ridges. On Ariel, in addition to at least one ridge unit similar to those on Miranda, flood plains material has covered the floors of deep chasmata (grabens) and an irregular depression. Flows on both satellites are characterized by linear vent geometries and distinct topographic margins, which indicate extrusion of a relatively viscous material. The topography of the flows can be used to estimate flow viscosity or yield strength using a Bingham plastic model. Extrusion viscosity estimates, incorporating plausible volcanologically based emplacement time scales and a rigid crust correction, range from 10 MP to 1 GP (10 TP in the unlikely absence of a chilled crust). Viscosity estimates are dependent on the assumed emplacement time scale, however, and could be as high as 10 PP, if a solid-state-based time scale is assumed.

  14. Psychometric Properties of the "Miranda Rights Comprehension Instruments" with a Juvenile Justice Sample

    ERIC Educational Resources Information Center

    Goldstein, Naomi E. Sevin; Romaine, Christina L. Riggs; Zelle, Heather; Kalbeitzer, Rachel; Mesiarik, Constance; Wolbransky, Melinda

    2011-01-01

    This article describes the psychometric properties of the "Miranda Rights Comprehension Instruments", the revised version of Grisso's "Miranda" instruments. The original instruments demonstrated good reliability and validity in a normative sample. The revised instruments updated the content of the original instruments and were administered to a…

  15. Outer shelf storm deposits of Upper Cretaceous Chico Formation, California

    SciTech Connect

    Russell, J.S.

    1987-05-01

    The Kingsley Cave member of the Upper Cretaceous Chico Formation, northeastern Sacramento Valley, California, is an outer shelf sequence consisting of muddy siltstones deposited below storm wave base. Silty fine-grained sandstone interbeds, interpreted as distal tempestites, are common within this member and are typically parallel laminated and devoid of shell material. Fossil concentrations within this member are rare, occurring as internally simple lenses within fine-grained sandstone interbeds. These fossil concentrations are up to 1.0 m in thickness. The faunas within these lenses are allochthonous or, less commonly, parautochthonous. Comparisons of the faunas in these shell lenses with published faunal assemblages for the Chico Formation and other Upper Cretaceous west coast nearshore deposits indicate that they were displaced from shallower-water environments. Lenses typically contain faunal elements of shoreface and inner shelf environments, which were located to the east during this time, as well as outer shelf faunal elements. These fossil concentrations are sedimentologic in origin. The scoured bases and overlying hummocky cross-stratified to ripple laminated siltstones of these lenses, their relative thicknesses, and the allochthonous shallower-water faunal elements contained within them are all characteristics of proximal tempestites, normally found within inner shelf sandstones. Distal tempestites, typical of outer shelf facies, are the norm for the Kingsley Cave member, while these proximal tempestites are the exception. The former were deposited by normal-strength storm events, while the latter are indicative of rare, extremely high-intensity storm events. During these extremely high-intensity storms proximality trends shifted seaward (westward), causing proximal tempestites to form more offshore than the proximal tempestites generated by normal-strength storms.

  16. Obscurity and Gender Resistance in Patricia Duncker's James Miranda Barry

    PubMed Central

    Funke, Jana

    2012-01-01

    Since his death in 1865, military surgeon James Barry has alternately been classified as a cross-dressing woman or as an intersexed individual. Patricia Duncker's novel James Miranda Barry (1999) poses an important challenge to such readings, as it does not reveal any foundational truth about Barry's sex. Resting on obscurity rather than revelation, the text frustrates the desire to know the past in terms of gender binaries and stable sexual identity categories. Drawing on feminist and queer theorisations of the relation between gender and time, this essay demonstrates that Duncker's use of obscurity opens up alternative strategies of gender resistance. PMID:25400502

  17. CHICO2, a two-dimensional pixelated parallel-plate avalanche counter

    DOE PAGES

    Wu, C. Y.; Cline, D.; Hayes, A.; Flight, R. S.; Melchionna, A. M.; Zhou, C.; Lee, I. Y.; Swan, D.; Fox, R.; Anderson, J. T.

    2016-01-27

    CHICO2 (Compact Heavy Ion COunter), is a large solid-angle, charged-particle detector array developed to provide both θ and Φ angle resolutions matching those of GRETINA (Gamma-Ray Energy Tracking In-beam Nuclear Array). CHICO2 was successfully tested at the Argonne National Laboratory where it was fielded as an auxiliary detector with GRETINA for γ-ray spectroscopic studies of nuclei using a 252Cf spontaneous fission source, stable beams, and radioactive beams from CARIBU. In field tests of the 72,76Ge beams on a 0.5 mg/cm2208Pb target at the sub-barrier energy, CHICO2 provided charged-particle angle resolutions (FWHM) of 1.55° in θ and 2.47° in Φ. Thismore » achieves the design goal for both coordinates assuming a beam-spot size (>3 mm) and the target thickness (>0.5 mg/cm 2). The combined angular resolution of GRETINA/CHICO2 resulted in a Doppler-shift corrected energy resolution of 0.60% for 1 MeV coincident de-excitation γ-rays. This is nearly a factor of two improvements in resolution and sensitivity compared to Gammasphere/CHICO. Kinematically-coincident detection of scattered ions by CHICO2 still maintains the mass resolution (ΔM/M) of ~5% that enhanced isolation of scattered weak beams of interest from scattered contaminant beams.« less

  18. CHICO2, a two-dimensional pixelated parallel-plate avalanche counter

    NASA Astrophysics Data System (ADS)

    Wu, C. Y.; Cline, D.; Hayes, A.; Flight, R. S.; Melchionna, A. M.; Zhou, C.; Lee, I. Y.; Swan, D.; Fox, R.; Anderson, J. T.

    2016-04-01

    CHICO2 (Compact Heavy Ion COunter), is a large solid-angle, charged-particle detector array developed to provide both θ and ϕ angle resolutions matching those of GRETINA (Gamma-Ray Energy Tracking In-beam Nuclear Array). CHICO2 was successfully tested at the Argonne National Laboratory where it was fielded as an auxiliary detector with GRETINA for γ-ray spectroscopic studies of nuclei using a 252Cf spontaneous fission source, stable beams, and radioactive beams from CARIBU. In field tests of the 72,76Ge beams on a 0.5 mg/cm2208Pb target at the sub-barrier energy, CHICO2 provided charged-particle angle resolutions (FWHM) of 1.55° in θ and 2.47° in ϕ. This achieves the design goal for both coordinates assuming a beam-spot size (>3 mm) and the target thickness (>0.5 mg/cm2). The combined angular resolution of GRETINA/CHICO2 resulted in a Doppler-shift corrected energy resolution of 0.60% for 1 MeV coincident de-excitation γ-rays. This is nearly a factor of two improvements in resolution and sensitivity compared to Gammasphere/CHICO. Kinematically-coincident detection of scattered ions by CHICO2 still maintains the mass resolution (ΔM/M) of ~5% that enhanced isolation of scattered weak beams of interest from scattered contaminant beams.

  19. Assessing the condition of bayous and estuaries: Bayou Chico Gulf of Mexico demonstration study

    SciTech Connect

    Dickson, K.; Acevedo, M.; Waller, T.; Kennedy, J.; Simons, J.; Mayer, F.; Lewis, M.; Walker, W.; Ammann, L.

    1995-12-31

    A demonstration study was conducted in May 1994 on Bayou Chico to assess the utility of various assessment and measurement endpoints in determining the condition of bayous and estuaries. Bayou Chico has water quality problems attributed to its low flushing rate and urban/industrial land use in its watershed. The sampling scheme assessed the within-sampling station and spatial variability of measurement endpoints. Fourteen sampling stations in Bayou Chico and 3 stations in Pensacola Bay were selected based on an intensified EMAP sampling grid. Time and space coordinated sampling was conducted for: sediment contaminants and properties, sediment toxicity, water quality, benthic infauna, zooplankton and phytoplankton populations. Fish and crabs were also collected and analyzed for a suite of biomarkers and organic chemical residues. Primary productivity was measured via the light bottle dark bottle oxygen method and via diurnal oxygen measurements made with continuous recording data sondes. Stream sites were evaluated for water and sediment quality, water and sediment toxicity, benthic invertebrates and fish. Watershed analyses included assessment of land use/landcover (via SPOT and TM images), soils, pollution sources (point and non-point) and hydrography. These data were coordinated via an Arc/Info GIS system for display and spatial analysis. 1994 survey data were used to parameterize environmental fate models such as SWMM (Storm Water Management Model), DYNHYD5 (WASP5 hydrodynamics model) and WASP5 (Water Quality Analysis Simulation Program) to make predictions about the dynamics and fate of chemical contaminants in Bayou Chico. This paper will present an overview, and report on the results in regards to within-site and spatial variability in Bayou Chico. Conclusions on the efficacy of the assessment and measurement endpoints in evaluating the condition (health) of Bayou Chico will be presented.

  20. The role of secondary resonances in the orbital history of Miranda

    NASA Technical Reports Server (NTRS)

    Malhotra, Renu; Dermott, Stanley F.

    1990-01-01

    A simple 'perturbed pendulum' model is developed in order to ascertain the origin and dynamics of the secondary resonances in the tidal evolution of Miranda and Umbriel through the 1:3 mean motion commensurability. Long-term evolution is addressed on the basis of the computation-accelerating method of algebraic mappings. It is found that the present 4.34-deg value of Miranda's orbital inclination is probably a result of capture into the primary resonance, as well as subsequent capture into the 3/1 secondary resonance. The damping of an eccentricity as high as 0.035 by tidal dissipation in the satellite may account for the surface features of Miranda.

  1. Dynamics of the Uranian and Saturnian satellite systems - A chaotic route to melting Miranda?

    NASA Technical Reports Server (NTRS)

    Dermott, Stanley F.; Malhotra, Renu; Murray, Carl D.

    1988-01-01

    Miranda's anomalously large inclination, in conjunction with the postaccretional resurfacing of both Miranda and Ariel and anomalously large eccentricities characterizing the inner Uranian satellites, are presently held to suggest the disruption of resonant configurations that once existed in this satellite system. Classical analytical methods for the dynamics of resonance are here used to demonstrate how temporary capture into a second- or higher-order resonance can generate large increases in eccentricity and inclination on comparatively short time-scales. Such capture into resonance may result in chaotic motion.

  2. Mutation in the Drosophila insulin-like receptor substrate, chico, affects the neuroendocrine stress-reaction development.

    PubMed

    Karpova, E K; Rauschenbach, I Yu; Burdina, E V; Gruntenko, N E

    2016-07-01

    It is shown for the first time that the insulin receptor substrate gene chico controls the functioning of the systems of metabolism of dopamine and juvenile hormone in Drosophila melanogaster females under normal conditions and in thermal stress. PMID:27599505

  3. Rates and Patterns of Chromosomal Evolution in Drosophila pseudoobscura and D. miranda

    PubMed Central

    Bartolomé, Carolina; Charlesworth, Brian

    2006-01-01

    Comparisons of gene orders between species permit estimation of the rate of chromosomal evolution since their divergence from a common ancestor. We have compared gene orders on three chromosomes of Drosophila pseudoobscura with its close relative, D. miranda, and the distant outgroup species, D. melanogaster, by using the public genome sequences of D. pseudoobscura and D. melanogaster and ∼50 in situ hybridizations of gene probes in D. miranda. We find no evidence for extensive transfer of genes among chromosomes in D. miranda. The rates of chromosomal rearrangements between D. miranda and D. pseudoobscura are far higher than those found before in Drosophila and approach those for nematodes, the fastest rates among higher eukaryotes. In addition, we find that the D. pseudoobscura chromosome with the highest level of inversion polymorphism (Muller's element C) does not show an unusually fast rate of evolution with respect to chromosome structure, suggesting that this classic case of inversion polymorphism reflects selection rather than mutational processes. On the basis of our results, we propose possible ancestral arrangements for the D. pseudoobscura C chromosome, which are different from those in the current literature. We also describe a new method for correcting for rearrangements that are not detected with a limited set of markers. PMID:16547107

  4. A Little Knowledge is a Dangerous Thing...Emerging Miranda Research and Professional Roles for Psychologists

    ERIC Educational Resources Information Center

    Rogers, Richard

    2008-01-01

    In Miranda v. Arizona (1966), the 20th century's most prominent and consequential legal decision on constitutionally guaranteed rights against compelled self-incrimination, the Supreme Court of the United States mandated the delivery of specific warnings to persons facing custodial interrogation. Owing in large part to popularization of these…

  5. Tidal evolution of the Uranian satellites. III - Evolution through the Miranda-Umbriel 3:1, Miranda-Ariel 5:3, and Ariel-Umbriel 2:1 mean-motion commensurabilities

    NASA Astrophysics Data System (ADS)

    Tittemore, W. C.; Wisdom, J.

    1990-06-01

    Numerical experiments have been conducted which indicate that the orbital eccentricity of Miranda may have reached a value sufficiently large to have affected its thermal evolution. There is a large chaotic zone associated with the Miranda-Ariel 5:3 mean-motion commensurability, even in the planar approximation; the orbital eccentricities of both satellites may vary chaotically for a considerable period. Since the anomalously high orbital inclination of Miranda is a consequence of passage through the 3:1 commensurability with Umbriel, the requirement that the satellites encountered this resonance places a lower limit on the Uranian specific dissipation function of 39,000.

  6. Tidal evolution of the Uranian satellites. III - Evolution through the Miranda-Umbriel 3:1, Miranda-Ariel 5:3, and Ariel-Umbriel 2:1 mean-motion commensurabilities

    NASA Technical Reports Server (NTRS)

    Tittemore, William C.; Wisdom, Jack

    1990-01-01

    Numerical experiments have been conducted which indicate that the orbital eccentricity of Miranda may have reached a value sufficiently large to have affected its thermal evolution. There is a large chaotic zone associated with the Miranda-Ariel 5:3 mean-motion commensurability, even in the planar approximation; the orbital eccentricities of both satellites may vary chaotically for a considerable period. Since the anomalously high orbital inclination of Miranda is a consequence of passage through the 3:1 commensurability with Umbriel, the requirement that the satellites encountered this resonance places a lower limit on the Uranian specific dissipation function of 39,000.

  7. Intracavitary Radiation Therapy for Recurrent Cystic Brain Tumors with Holmium-166-Chico : A Pilot Study

    PubMed Central

    Ha, Eun Jin; Rhee, Chang Hun; Youn, Sang Min; Choi, Chang-Woon; Cheon, Gi Jeong

    2013-01-01

    Objective Intracavitary injection of beta-emitting radiation source for control of cystic tumors has been tried with a benefit of localized internal radiation. The authors treated cystic brain tumor patients with Holmium-166-chitosan complex (Ho-166-chico), composed of a beta-emitting radionuclide Holmium-166 and biodegradable chit polymer, and evaluated the safety and effective measurement for response. Methods Twenty-two patients with recurrent cystic brain tumor and/or located in a deep or eloquent area were enrolled in this pilot study. The cyst volume and wall thickness were determined on CT or MRI to assess radiological response. The activity of Ho-166-chico injected via Ommaya reservoir was prescribed to be 10-25 Gy to the cyst wall in a depth of 4 mm. Results There was neither complications related to systemic absorption nor leakage of Ho-166-chico in all 22 patients. But, two cases of oculomotor paresis were observed in patients with recurrent craniopharyngioma. Radiological response was seen in 14 of 20 available follow-up images (70%). Seven patients of 'evident' radiological response experienced more than 25% decrease of both cyst volume and wall thickness. Another 7 patients with 'suggestive' response showed decrease of cyst volume without definitive change of the wall thickness or vice versa. All patients with benign tumors or low grade gliomas experienced symptomatic improvement. Conclusion Ho-166-chico intracavitary radiation therapy for cystic tumor is a safe method of palliation without serious complications. The determination of both minimal effective dosage and time interval of repeated injection through phase 1 trial could improve the results in the future. PMID:24278644

  8. Pediatric diseases in Juan Carreño de Miranda's paintings.

    PubMed

    Martínez-Lage, Juan F; Pérez-Espejo, Miguel A; Galarza, Marcelo

    2012-02-01

    Pediatric obesity has become a widespread problem of health in developed countries. Overweight in the pediatric population obeys to a variety of causes. A few of Carreño de Miranda's paintings show pathological conditions occurring in children of his epoch. We briefly illustrate the significance of Carreño's paintings that portray some of these diseases. Two of his best-known works constitute an artistic representation of childhood obesity.

  9. Estimating the Parameters of Selection on Nonsynonymous Mutations in Drosophila pseudoobscura and D. miranda

    PubMed Central

    Haddrill, Penelope R.; Loewe, Laurence; Charlesworth, Brian

    2010-01-01

    We present the results of surveys of diversity in sets of >40 X-linked and autosomal loci in samples from natural populations of Drosophila miranda and D. pseudoobscura, together with their sequence divergence from D. affinis. Mean silent site diversity in D. miranda is approximately one-quarter of that in D. pseudoobscura; mean X-linked silent diversity is about three-quarters of that for the autosomes in both species. Estimates of the distribution of selection coefficients against heterozygous, deleterious nonsynonymous mutations from two different methods suggest a wide distribution, with coefficients of variation greater than one, and with the average segregating amino acid mutation being subject to only very weak selection. Only a small fraction of new amino acid mutations behave as effectively neutral, however. A large fraction of amino acid differences between D. pseudoobscura and D. affinis appear to have been fixed by positive natural selection, using three different methods of estimation; estimates between D. miranda and D. affinis are more equivocal. Sources of bias in the estimates, especially those arising from selection on synonymous mutations and from the choice of genes, are discussed and corrections for these applied. Overall, the results show that both purifying selection and positive selection on nonsynonymous mutations are pervasive. PMID:20516497

  10. Using Quantitative Skills in Introductory Geology Lab Activities at CSU Chico

    NASA Astrophysics Data System (ADS)

    Teasdale, R.; Karin, H.

    2006-12-01

    The "Rivers and Streams" activity for the introductory Geology course at CSU Chico has become an opportunity to engage students in hands-on data collection and synthesis of multiple data sets. Students collect stream flow data on campus from Big Chico Creek during week 1 of the semester as one activity in a "preview" lab. Measurements, unit conversions, and simple algebraic calculations are completed, along with discussions of the data. Students collect similar data sets approximately 5 miles upstream during a mid- semester fieldtrip and again during week 14 as part of the "Rivers and Streams" lab activity at the on-campus site. In each case stream velocity, width, depth, and discharge are determined. As part of the "Rivers and Streams" activity students also construct hydrographs and compare the measurements of all three sample sets. By collecting data three times during the semester students are able to observe and measure stream flow variations at different points along Big Chico Creek and consider seasonal variations. For some students the quantitative activities are a good opportunity to practice algebraic calculations as they learn geologic concepts, but other students are challenged by the quantitative operations and so benefit from multiple opportunities to learn and then improve their comprehension of the quantitative skills. Laboratory instructors (graduate teaching assistants) initially reported that review of simple calculations consumed excessive amounts of time in class so a "pre-work" was developed to give students a quick review of skills needed to complete lab work. Some students report completing the pre-work very quickly and others indicate that it provided a good opportunity for them to recall rusty skills or seek help from classmates or teaching assistants. Ongoing developments include a web based interface for data entry so that students can access data sets collected in previous semesters (new for Spring 2007).

  11. Cosmogenic nuclides in core samples of the Chico L6 chondrite - Evidence for irradiation under high shielding

    NASA Technical Reports Server (NTRS)

    Garrison, D. H.; Bogard, D. D.; Albrecht, A. A.; Vogt, S.; Herzog, G. F.; Klein, J.; Fink, D.; Dezfouly-Arjomandy, B.; Middleton, R.

    1992-01-01

    Results are presented from an analysis of core samples obtained from different depths of the Chico (New Mexico) L6 chondrite for various cosmogenic nuclides (Be-10, Al-26, and stable isotopes of He, Ne, and Ar). The relationships between the measured abundances of cosmogenic nuclides and cosmogenic Ne-22/Ne-21 ratio were compared with predictions of recent semiempirical models of Graf et al. (1990) and Reedy (1991), and it was found that both models closely reproduce the observed trends and absolute values of the data obtained. Noble gas data indicate that Chico experienced shielding similar to that of Jilin and greater than those of the Knyahinya or the Keyes chondrites. The exposure history for Chico is discussed.

  12. Cosmogenic nuclides in core samples of the Chico L6 chondrite - Evidence for irradiation under high shielding

    NASA Astrophysics Data System (ADS)

    Garrison, D. H.; Bogard, D. D.; Albrecht, A. A.; Vogt, S.; Herzog, G. F.; Klein, J.; Fink, D.; Dezfouly-Arjomandy, B.; Middleton, R.

    1992-09-01

    Results are presented from an analysis of core samples obtained from different depths of the Chico (New Mexico) L6 chondrite for various cosmogenic nuclides (Be-10, Al-26, and stable isotopes of He, Ne, and Ar). The relationships between the measured abundances of cosmogenic nuclides and cosmogenic Ne-22/Ne-21 ratio were compared with predictions of recent semiempirical models of Graf et al. (1990) and Reedy (1991), and it was found that both models closely reproduce the observed trends and absolute values of the data obtained. Noble gas data indicate that Chico experienced shielding similar to that of Jilin and greater than those of the Knyahinya or the Keyes chondrites. The exposure history for Chico is discussed.

  13. Airborne gamma-ray spectrometer and magnetometer survey: Chico quadrangle, California. Final report

    SciTech Connect

    Not Available

    1981-05-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Chico, California, map area. Traverse lines were flown in an east-west direction at a line spacing of three. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 3026.4 line miles are in the quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  14. Fault geometries on Uranus' satellite Miranda: Implications for internal structure and heat flow

    NASA Astrophysics Data System (ADS)

    Beddingfield, C. B.; Burr, D. M.; Emery, J. P.

    2015-02-01

    Miranda, a ∼470-km-diameter uranian icy satellite, has a surface that exhibits evidence of a complex tectonic history. Tectonic structures are mostly localized in three regions termed coronae, but also form a rift system inferred to be global in extent. Ridges within the boundary of Arden Corona, and those that make up the 340° Chasma, part of the global rift system, have been interpreted as normal fault blocks. Using Voyager data, we test the hypothesis that these Arden Corona faults, as well as those at the northern edge of the 340° Chasma, are listric in geometry. For this testing, we use four geometric criteria for listric faults: (1) progressive down-dip decrease in fault scarp dip, (2) progressive down-dip increase in back-tilted face slope, (3) concavity of the exposed scarp surface, and (4) presence of a rollover structure. Results of this analysis support the hypothesis that the faults within the Arden Corona boundary are listric in geometry, but do not strongly support the hypothesis for the faults within the 340° Chasma. By analogy with terrestrial structures, the listric character of faults within the Arden Corona boundary suggests the presence of a subsurface detachment. This detachment likely occurred at Miranda's brittle-ductile transition zone at the time of faulting. Measurements of the Arden Corona fault system geometry are used to estimate depths to the proposed brittle-ductile transition zone at the time of faulting, resulting in values of 6.7-9.0 km. Those depths in turn are used to estimate a thermal gradient of 6-25 K km-1 and a surface heat flux of 31-112 mW m-2. The weaker evidence of a listric geometry for the faults of the 340° Chasma suggests that those faults did not interact with a brittle-ductile transition at the time of their formation. Our estimated thermal gradient of the Arden Corona region is consistent with a previous heating event on Miranda that was as significant as Europa's current resonance-induced tidal heating

  15. Spectroscopic observations of the Uranus' satellite Miranda in Near-IR

    NASA Astrophysics Data System (ADS)

    Gourgeot, F.; Dumas, C.; Merlin, F.; Vernazza, P.; Alvarez-Candal, A.

    2013-09-01

    We present new Near-IR spectra of the Uranus' icy satellite Miranda. This body is probably the most remarkable of all satellites of Uranus, displaying series of surface features such as faults, craters and largescale upwelling, remnant of a geologically very active past. The observations were performed first at the Palomar Observatory with the PHARO instrument (Palomar High Angular Resolution Observer) and then at the Mauna Kea Observatory with SpeX instrument based on the IRTF (Infra-Red Telescope Facility). Water ice is clearly visible in K-band (large 2.0 μm absorption band) and crystalline water ice (at 1.65 μm) seems to cover the most part of the satellite's surface. We focused the study in H band on the 1.42-1.72 μm range at observations dates corresponding to the leading and trailing hemispheres of Miranda. Contrary to the other outer Uranus' moons (Grundy et al. 2006), we did not found any significative differences between both hemispheres in this spectral range. We also studied the possible presence of volatiles like ammonia hydrate and do not exclude the possible presence of a tiny 2.22 μm band yet observed by Bauer et al. 2002. No significant features of carbon dioxide were identified on any spectra. We performed spectral models, based on bi-hemispherical reflectance theory (Hapke 1993) in order to obtain more details on the chemical compounds possibly present on the surface of this Uranian satellite.

  16. "I'm Very Not About the Law Part": Nonnative Speakers of English and the Miranda Warnings

    ERIC Educational Resources Information Center

    Pavlenko, Aneta

    2008-01-01

    This article presents a case study of a police interrogation of a nonnative speaker (NNS) of English. I show that the high linguistic and conceptual complexity of police cautions, such as the Miranda warnings, complicates understanding of these texts even by NNSs of English with a high level of interactional competence. I argue that the U.S.…

  17. Water-quality investigation near the Chico and Hunters geothermal lease-application areas, Park and Sweet Grass Counties, Montana

    USGS Publications Warehouse

    Leonard, Robert B.; Shields, Ronald R.; Midtlyng, Norman A.

    1978-01-01

    Water quality in and adjacent to geothermal lease-application areas in Montana near Chico and Hunters Hot Springs was investigated during two surveys in October 1976 and April 1977. The data were needed to evaluate the effects of proposed geothermal exploration and development on the Yellowstone River and its tributaries. Water from the two hot springs, the Yellowstone River, and its tributaries that drain the proposed lease areas are generally suitable for drinking, except for excessive concentrations of fluoride and hydrogen sulfide in waters from Hunters Hot Springs. The water from Chico Hot Springs is suitable for irrigation, but the water from Hunters Hot Springs presents a very high sodium and medium salinity hazard and is generally unsatisfactory for irrigation. The effect of the thermal waters on streamflow and chemical discharge of the Yellowstone River during the surveys was negligible. (Woodard-USGS)

  18. Formation conditions of igneous regions in ordinary chondrites: Chico, Rose City, and other heavily shocked H and L chondrites

    NASA Astrophysics Data System (ADS)

    Yolcubal, Irfan; Sack, Richard O.; Wang, Ming-Sheng; Lipschutz, Michael E.

    1997-09-01

    We report microprobe and radiochemical neutron activation analysis (RNAA) data for hosts and igneous inclusions in the heavily shocked ordinary chondrites Rose City (H5), Yanzhuang (H6), Farmington (L5), Malakal (L5), Chantonnay (L6), Chico (L6), and Tuan Tuc (L6). Based on these analytical results, equilibrium crystallization calculations [Ghiorso and Sack, 1995], phase equilibrium analysis [e.g., Sack and Ghiorso, 1994a,b; Sack et al., 1994], and experimental cooling rate studies [e.g., Walker et al., 1976], we have assessed the metamorphic and magmatic histories of these seven heavily shocked chondrites. We infer that (1) unfractionated chondritic liquids were intruded to depths >0.1km in the parent asteroid of Rose City; (2) early chondritic liquids experiencing 5-10% olivine fractionation were erupted onto the surface of the parent asteroid(s) of Yanzhuang and Chantonnay; and (3) near-surface crystallization is also indicated for the liquids in Tuan Tuc and Farmington, with Chico and Malakal crystallizing at slightly greater depths. In all but Chantonnay, liquids appear to have derived from melting of chondrite types corresponding to their hosts. In the L chondrite Chantonnay, the intrusive liquids derive from melting an H chondrite source region in which chondritic melts were stored for a sufficient time to produce pigeonite in zoned pyroxene xenocrysts. Heating effects are also reflected in the trace element contents of the chondrites. Our RNAA data for Rose City seem to reflect only the siderophile-lithophile fractionation evident in the metal distribution. The Yanzhuang RNAA data are generally similar to those of other H chondrites: severe shock not involving phase transport seems to leave H chondrites unaffected compositionally. Contents of the four most mobile elements (Cd, Bi, Tl, In) and Cs in Chico indicate loss, so that this assemblage experienced extended, low-temperature cooling after injection of dike material into the Chico host. RNAA data for

  19. On the type locality of Sorubim trigonocephalus Miranda-Ribeiro, 1920 (Siluriformes: Pimelodidae).

    PubMed

    Ohara, Willian Massaharu; Neuhaus, Emanuel Bruno

    2016-01-01

    Sorubim trigonocephalus was described in 1920 by Alípio de Miranda Ribeiro, based on a single specimen collected in a locality identified as "Porto Velho", during the "Comissão das Linhas Telegráficas Estratégicas de Mato Grosso ao Amazonas" (more commonly known as Rondon Commission). Given that the type locality is Porto Velho, the species has been referred to the Madeira River basin (Lundberg & Littmann, 2003; Littmann, 2007; Eschmeyer et al., 2016). Nevertheless, after its description, no additional specimens were collected in the Madeira basin despite several ichthyological expeditions undertaken to the area (Santos, 1996; Camargo & Giarrizzo, 2007; Rapp Py-Daniel et al., 2007; Perin et al., 2007; Pedroza et al., 2012; Casatti et al., 2013; Queiroz et al., 2013a), some of them including region of Porto Velho (Fowler, 1913; Araújo et al., 2009; Torrente-Vilara et al., 2011; Queiroz et al., 2013b). PMID:27470724

  20. On the type locality of Sorubim trigonocephalus Miranda-Ribeiro, 1920 (Siluriformes: Pimelodidae).

    PubMed

    Ohara, Willian Massaharu; Neuhaus, Emanuel Bruno

    2016-07-11

    Sorubim trigonocephalus was described in 1920 by Alípio de Miranda Ribeiro, based on a single specimen collected in a locality identified as "Porto Velho", during the "Comissão das Linhas Telegráficas Estratégicas de Mato Grosso ao Amazonas" (more commonly known as Rondon Commission). Given that the type locality is Porto Velho, the species has been referred to the Madeira River basin (Lundberg & Littmann, 2003; Littmann, 2007; Eschmeyer et al., 2016). Nevertheless, after its description, no additional specimens were collected in the Madeira basin despite several ichthyological expeditions undertaken to the area (Santos, 1996; Camargo & Giarrizzo, 2007; Rapp Py-Daniel et al., 2007; Perin et al., 2007; Pedroza et al., 2012; Casatti et al., 2013; Queiroz et al., 2013a), some of them including region of Porto Velho (Fowler, 1913; Araújo et al., 2009; Torrente-Vilara et al., 2011; Queiroz et al., 2013b).

  1. Surfaces of section in the Miranda-Umbriel 3:1 inclination problem

    NASA Astrophysics Data System (ADS)

    Moons, Michele; Henrard, Jacques

    1994-06-01

    The recent numerical simulations of Tittemore and Wisdom (1988, 1989, 1990), Dermott et al. (1988), Malhotra and Dermott (1990) concerning the tidal evolution through resonances of some pairs of Uranian satellites have revealed interesting dynamical phenomena related to the interactions between close-by resonances. These interactions produce chaotic layers and strong secondary resonances. The slow evolution of the satellite orbits in this dynamical landscape is responsible for temporary capture into resonance, enhancement of eccentricity or inclination and subsequent escape from resonance. The present contribution aims at developing analytical tools for predicting the location and size of chaotic layers and secondary resonances. The problem of the 3:1 inclination resonance between Miranda and Umbriel is analyzed.

  2. The origin of chaotic behaviour in the Miranda-Umbriel 3 : 1 resonances

    NASA Astrophysics Data System (ADS)

    Henrard, Jacques; Sato, Massae

    1989-12-01

    We have investigated the pericentric resonances through which Miranda and Umbriel are believed to have passed when, due to tidal evolution, their orbital mean motions reached a 3 : 1 commensurability. Our investigation is based upon a perturbative treatment. The predictions of this theory are in good agreement with the results of numerical integrations concerning both the extend of the chaotic layers generated by the separatrices of the primary resonances and the location of the secondary resonances. The effect of tidal evolution is discussed on the bases of the adiatatic invariant theory and its extension to separatrix crossing. We recover qualitatively the mean features of the numerical experiments of Tittermore and Wisdom (1988 1989), Dermott et al (1988) and Malhotra and Dermott (1989).

  3. Dating the Late Archaic occupation of the Norte Chico region in Peru.

    PubMed

    Haas, Jonathan; Creamer, Winifred; Ruiz, Alvaro

    2004-12-23

    The Norte Chico region on the coast of Peru north of Lima consists of four adjacent river valleys--Huaura, Supe, Pativilca and Fortaleza--in which archaeologists have been aware of a number of apparently early sites for more than 40 years (refs 1- 3). To clarify the early chronology in this region, we undertook fieldwork in 2002 and 2003 to determine the dates of occupation of sites in the Fortaleza and Pativilca valleys. Here we present 95 new radiocarbon dates from a sample of 13 of more than 20 large, early sites. These sites share certain basic characteristics, including large-scale monumental architecture, extensive residential architecture and a lack of ceramics. The 95 new dates confirm the emergence and development of a major cultural complex in this region during the Late Archaic period between 3000 and 1800 calibrated calendar years bc. The results help to redefine a broader understanding of the respective roles of agricultural and fishing economies in the beginnings of civilization in South America.

  4. MIRANDA PINE, HORSESHOE SPRINGS, TEPUSQUET PEAK, LA BREA, SPOOR CANYON, FOX MOUNTAIN, AND LITTLE PINE ROADLESS AREAS, CALIFORNIA.

    USGS Publications Warehouse

    Frizzell, Virgil A., Jr.; Kuizon, Lucia

    1984-01-01

    The Miranda Pine, Horseshoe Springs, Tepusquet Peak, La Brea, Spoor Canyon, Fox Mountain and Little Pine Roadless Areas together occupy about 246 sq mi in the Los Padres National Forest, California. Mineral-resource surveys indicate demonstrated resources of barite, copper, and zinc at two localities in the La Brea Roadless Area and demonstrated resources of phosphate at a mine in the Fox Mountain Roadless Area. A building stone quarry is present on the southern border of the Horseshoe Spring Roadless Area and an area of substantiated resource potential extends into the area. The Miranda Pine, Tepusquet Peak, Spoor Canyon, and Little Pine Roadless Areas have little promise for the occurrence of mineral resources and there is little promise for the occurrence of energy resources in any of the roadless areas.

  5. New Program for New Faculty Mentoring at California State University, Chico

    NASA Astrophysics Data System (ADS)

    Teasdale, R.; McCarthy, K.; Phillips, C.; Silliman, K.; Fosen, C.; Thomas, M.

    2015-12-01

    CSU, Chico is a comprehensive university with high expectations for both teaching (4 courses per semester) and scholarly work. In an attempt to introduce faculty to their new positions, a two-day New Faculty Orientation has been offered for the last two decades. In AY 2014-15, in an attempt to improve the first year experience for new faculty, the Office of Faculty Affairs established and assessed a New Faculty Mentoring program. Eight college-based mentors were selected based on recommendations by College Deans who suggested successful teachers and scholars who could provide the social and leadership skills to effectively guide others. Based on a needs-assessment survey new faculty completed during orientation, mentors met with their new faculty cohort at least monthly to discuss campus resources, host workshops and provide other support in areas of time management, work-life balance, teaching pedagogies, discipline-specific internal and external funding resources, student support resources, and the preparation of Review/Retention documents. Mentors were paid a small stipend for their work and met twice each semester to discuss readings on mentoring best practices, their mentoring activities with new faculty and to compare the needs of their mentees. Survey results from 28 of 37 new faculty respondents indicate they valued Review/Retention workshops, mentor reviews of teaching and the opportunity to visit mentor classrooms for examples of good teaching practices. Social events helped establish cohorts, although some mentees indicated that some cohorts were too large. An unforeseen outcome was recognition that mid-year hires need to also be included in new faculty cohort groups. Moving forward, mentors will continue to work with their original mentees for a 2nd year. A new group of mentors will be identified for faculty starting in fall 2015 who will work with smaller first-year faculty cohorts and will coordinate with the first generation mentors for peer support.

  6. The structural basis of Miranda-mediated Staufen localization during Drosophila neuroblast asymmetric division.

    PubMed

    Jia, Min; Shan, Zelin; Yang, Ying; Liu, Chunhua; Li, Jianchao; Luo, Zhen-Ge; Zhang, Mingjie; Cai, Yu; Wen, Wenyu; Wang, Wenning

    2015-01-01

    During the asymmetric division of Drosophila neuroblasts (NBs), the scaffold Miranda (Mira) coordinates the subcellular distribution of cell-fate determinants including Staufen (Stau) and segregates them into the ganglion mother cells (GMCs). Here we show the fifth double-stranded RNA (dsRNA)-binding domain (dsRBD5) of Stau is necessary and sufficient for binding to a coiled-coil region of Mira cargo-binding domain (CBD). The crystal structure of Mira514-595/Stau dsRBD5 complex illustrates that Mira forms an elongated parallel coiled-coil dimer, and two dsRBD5 symmetrically bind to the Mira dimer through their exposed β-sheet faces, revealing a previously unrecognized protein interaction mode for dsRBDs. We further demonstrate that the Mira-Stau dsRBD5 interaction is responsible for the asymmetric localization of Stau during Drosophila NB asymmetric divisions. Finally, we find the CBD-mediated dimer assembly is likely a common requirement for Mira to recognize and translocate other cargos including brain tumour (Brat). PMID:26423004

  7. Phosphotyrosyl phosphatase activator facilitates localization of Miranda through dephosphorylation in dividing neuroblasts.

    PubMed

    Zhang, Fan; Huang, Zhen-Xing; Bao, Hongcun; Cong, Fei; Wang, Huashan; Chai, Phing Chian; Xi, Yongmei; Ge, Wanzhong; Somers, W Gregory; Yang, Ying; Cai, Yu; Yang, Xiaohang

    2016-01-01

    The mechanism for the basal targeting of the Miranda (Mira) complex during the asymmetric division of Drosophila neuroblasts (NBs) is yet to be fully understood. We have identified conserved Phosphotyrosyl phosphatase activator (PTPA) as a novel mediator for the basal localization of the Mira complex in larval brain NBs. In mutant Ptpa NBs, Mira remains cytoplasmic during early mitosis and its basal localization is delayed until anaphase. Detailed analyses indicate that PTPA acts independent of and before aPKC to localize Mira. Mechanistically, our data show that the phosphorylation status of the T591 residue determines the subcellular localization of Mira and that PTPA facilitates the dephosphorylation of T591. Furthermore, PTPA associates with the Protein phosphatase 4 complex to mediate localization of Mira. On the basis of these results, a two-step process for the basal localization of Mira during NB division is revealed: cortical association of Mira mediated by the PTPA-PP4 complex is followed by apical aPKC-mediated basal restriction.

  8. Reproductive Patterns in the Non-Breeding Season in Asinina de Miranda Jennies.

    PubMed

    Quaresma, M; Silva, S R; Payan-Carreira, R

    2015-10-01

    This study aims to characterize the reproductive patterns in Asinina de Miranda jennies during the non-breeding season. Reproductive activity was surveyed in 12 females, aged between 3 and 18 years old, using ultrasound and teasing with a jack. The animals were monitored from September to April, six in each consecutive year. Of these 12 females, nine showed disruption to the normal pattern of ovarian activity during the non-breeding season. Loss of normal cyclicity included anoestrus (41.7%), silent ovulatory oestrus (25%), and persistence of corpus luteum (8.3%). Only three females maintained a regular cyclic pattern with oestrous behaviour during the non-breeding season. Anoestrus began in early November and lasted for an average of 147 ± 28 days (113-191 days), ending near to the spring equinox. Onset of silent oestrous cycles began more erratically, between October and February. In both groups the first behavioural ovulation of the year occurred around the time of the spring equinox. Disrupted reproductive activity was preceded by a shorter oestrous cycle only in females entering anoestrus. The mean follicle size in the first ovulation of the year was larger than in the reproductive season (44.7 ± 2.45 mm vs 39.2 ± 3.60 mm) in anoestrous jennies with protracted oestrus. Though age and body condition score (BCS) were associated, changes in BCS below a threshold of four points (for anoestrus) and five points (for silent oestrus) contributed greatly to disruption of reproductive cycles. BCS in females with regular oestrous cycles during the winter season remained unchanged or exceeded five points prior to the winter solstice. PMID:26281788

  9. Reproductive Patterns in the Non-Breeding Season in Asinina de Miranda Jennies.

    PubMed

    Quaresma, M; Silva, S R; Payan-Carreira, R

    2015-10-01

    This study aims to characterize the reproductive patterns in Asinina de Miranda jennies during the non-breeding season. Reproductive activity was surveyed in 12 females, aged between 3 and 18 years old, using ultrasound and teasing with a jack. The animals were monitored from September to April, six in each consecutive year. Of these 12 females, nine showed disruption to the normal pattern of ovarian activity during the non-breeding season. Loss of normal cyclicity included anoestrus (41.7%), silent ovulatory oestrus (25%), and persistence of corpus luteum (8.3%). Only three females maintained a regular cyclic pattern with oestrous behaviour during the non-breeding season. Anoestrus began in early November and lasted for an average of 147 ± 28 days (113-191 days), ending near to the spring equinox. Onset of silent oestrous cycles began more erratically, between October and February. In both groups the first behavioural ovulation of the year occurred around the time of the spring equinox. Disrupted reproductive activity was preceded by a shorter oestrous cycle only in females entering anoestrus. The mean follicle size in the first ovulation of the year was larger than in the reproductive season (44.7 ± 2.45 mm vs 39.2 ± 3.60 mm) in anoestrous jennies with protracted oestrus. Though age and body condition score (BCS) were associated, changes in BCS below a threshold of four points (for anoestrus) and five points (for silent oestrus) contributed greatly to disruption of reproductive cycles. BCS in females with regular oestrous cycles during the winter season remained unchanged or exceeded five points prior to the winter solstice.

  10. Variation in Activities of Amylase Allozymes Associated with Chromosome Inversions in DROSOPHILA PSEUDOOBSCURA, D. PERSIMILIS and D. MIRANDA

    PubMed Central

    Norman, R. A.; Prakash, Satya

    1980-01-01

    Different electrophoretic alleles of amylase show associations with particular chromosome 3 inversions in D. pseudoobscura and D. persimilis. Relative adult amylase activities were compared in 37, 37 and 10 strains of D. pseudoobscura, D. persimilis and D. miranda, respectively. Strains carrying the same electrophoretic allele were compared by crossing these lines individually to a reference strain carrying a different electrophoretic mobility allele. This procedure allows comparisons among species, inversions, electromorphs and strains for genetic variation in amylase activity. F2 analysis established that the activity variation co-segregates with the structural amylase locus. This type of variation could be due to either structural gene differences or differences in closely linked, cis-acting regulatory regions. Variation has been detected among and within electrophoretic mobility classes. Moreover, this variation is clearly nonrandom and reveals more of the genetic structure associated with the chromosomal inversion phylogeny of D. pseudoobscura and D. persimilis.—Some of the findings are: (1) Similar electromorphs in D. pseudoobscura and D. persimilis usually show different activities. These species show nearly complete differentiation of amylase alleles, based on activities. (2) D. persimilis has the broadest range of variation in amylase activity, about four-fold between the highest and lowest alleles. D. pseudoobscura and D. miranda are also polymorphic for activity, but have more constrained ranges of variation. D. miranda alleles show on the average about four times the activity of D. pseudoobscura alleles. (3) Some association of electrophoretic mobility and activity has been found. Alleles 1.09 of D. persimilis, as well as 1.43 and 1.55 of D. miranda, have relatively high activity. It may be that these high activity alleles are part of an adaptation to cooler habitats. (4) Within electrophoretic classes, associations of activities with inversions have

  11. Tidal evolution of the Uranian satellites. II - An explanation of the anomalously high orbital inclination of Miranda

    NASA Technical Reports Server (NTRS)

    Tittemore, William C.; Wisdom, Jack

    1989-01-01

    It is proposed that the current, anomalously high orbital inclination of the Uranian satellite, Miranda, can be accounted for by temporary capture into the 3:1 resonance with Umbriel. This would imply that the orbits of the satellites have tidally evolved sufficiently to have permitted passage through this resonance. Escape from resonance is suggested to have occurred by way of a novel dynamical mechanism, in which the trajectory encounters low-order commensurabilities between the libration frequency of the resonant argument and other fundamental system frequencies.

  12. Protolith age of Santa Maria Chico granulites dated on zircons from an associated amphibolite-facies granodiorite in southernmost Brazil.

    PubMed

    Hartmann, Léo A; Liu, Dunyi; Wang, Yenbin; Massonne, Hans-Joachim; Santos, João O S

    2008-09-01

    U-Pb dating of zircon was undertaken with the Beijing SHRIMP II (sensitive high resolution ion microprobe) on anamphibolite facies granodiorite and an almandine-albite granulite from the Santa Maria Chico Granulitic Complex, southern Brazilian Shield. This work was also done to unravel protolith ages which are often hidden in the array of partly reset data. The obtained metamorphic ages of the granodiorite gneiss and the granulite are 2035 +/- 9 Ma and 2006 +/- 3 Ma, respectively. These data are within the range of metamorphic ages determined in previous studies (2022 +/- 18 Ma and 2031 +/- 40 Ma). However, protolith ages for the granodiorite (2366 +/- 8 Ma) and the granulite (2489 +/- 6 Ma) were obtained which are outside the previously recognized range (> 2510-2555 Ma). The magmatic protolith age of the granodiorite refers to a previously little known magmatic event in the shield. Further investigations may demonstrate that amphibolite facies zircon crystals are useful as a window into geological events in associated granulites, because zircon ages are blurred in the studied granulites.

  13. Intercomparison exercise on external gamma dose rate under field conditions at the laboratory of natural radiation (Saelices el Chico, Spain).

    PubMed

    Gutierrez-Villanueva, J L; Sainz-Fernández, C; Fuente-Merino, I; Sáez-Vergara, J C; Correa-Garcés, E; Quindos-Poncela, L S

    2013-08-01

    The last nuclear accident in Fukushima nuclear power plant has increased the necessity for measuring radiation in the environment. Therefore, radiation monitors providing results traceable throughout the country become essential and it is very important to test them under the same environmental conditions. The first intercomparison of natural radioactivity under field conditions was held in Saelices el Chico (Salamanca, Spain) in May 2011, including an exercise on environmental dose rate. This article presents the results achieved by 19 instruments belonging to 12 institutions from 7 different countries. The tested detectors are proportional counters, ionisation chambers, Geiger-Müller and scintillators measuring dose rate in three stations with reference values from 110 to 1800 nGy h(-1). All the results were given in terms of air kerma (nGy h(-1)) and the measurements show agreement within 25 % in all the sites. Evaluation criteria based on accuracy and statistical uncertainty were also carried out and 25 % of participants passed the test in all sites.

  14. Preliminary AMS Study in Cretaceous Igneous Rocks of Valle Chico Complex, Uruguay: Statistical Determination of Magnetic Susceptibility

    NASA Astrophysics Data System (ADS)

    Barcelona, H.; Mena, M.; Sanchez-Bettucci, L.

    2009-05-01

    The Valle Chico Complex, at southeast Uruguay, is related Paraná-Etendeka Province. The study involved basaltic lavas, quarz-syenites, and rhyolitic and trachytic dikes. Samples were taken from 18 sites and the AMS of 250 specimens was analyzed. The AMS is modeled by a second order tensor K and it graphical representation is a symmetric ellipsoid. The axes relations determine parameters which describe different properties like shape, lineation, and foliation, degree of anisotropy and bulk magnetic susceptibility. Under this perspective, one lava, dike, or igneous body can be considered a mosaic of magnetic susceptibility domains (MSD). The DSM is an area with specific degree of homogeneity in the distribution of parameters values and cinematic conditions. An average tensor would weigh only one MSD, but if the site is a mosaic, subsets of specimens with similar parameters can be created. Hypothesis tests can be used to establish parameter similarities. It would be suitable considered as a MSD the subsets with statistically significant differences in at least one of its means parameters, and therefore, be treated independently. Once defined the MSDs the tensor analysis continues. The basalt-andesitic lavas present MSD with an NNW magnetic foliation, dipping 10. The K1 are sub-horizontal, oriented E-W and reprsent the magmatic flow direction. The quartz-syenites show a variable magnetic fabric or prolate ellipsoids mayor axes dispose parallel to the flow direction (10 to the SSE). Deformed syenites show N300/11 magnetic foliation, consistent with the trend of fractures. The K1 is subvertical. The MSD defined in rhyolitic dikes have magnetic foliations consistent with the structural trend. The trachytic dikes show an important indetermination in the magnetic response. However, a 62/N90 magnetic lineation was defined. The MSDs obtained are consistent with the geological structures and contribute to the knowledge of the tectonic, magmatic and kinematic events.

  15. Fluvial architecture variations linked to changes in accommodation space: Río Chico Formation (Late Paleocene), Golfo San Jorge basin, Argentina

    NASA Astrophysics Data System (ADS)

    Foix, Nicolás; Paredes, José M.; Giacosa, Raúl E.

    2013-08-01

    The Upper Paleocene Río Chico Formation is a 50-180 m thick fluvial succession developed in a passive-margin setting, Golfo San Jorge basin, Central Patagonia, Argentina. A detailed description and interpretation of outcrops was carried out, analyzing exposures from the northern basin margin to the most complete successions at the southern depocenter. The unit is characterized by a regional fluvial system that flowed to the south-east. Five main lithofacies associations were defined: (I) active fluvial channels, with three sub-types: braided, meandering and low-sinuosity, (II) sheet-flood deposits, (III) proximal floodplain (natural levee and crevasse-splay), (IV) distal floodplain, and (V) abandoned channels. Lateral/vertical changes in fluvial architecture of the Río Chico Formation were recognized by variations in preserved thickness, fluvial styles, geometry of fluvial channels, regional paleoflow directions, and channel/floodplain ratios. Close to the northern basin margin, the fluvial succession is 50-60 m thick, composed of braided channels, sheet-flow deposits, and high channel/floodplain ratio. In a basinward direction, the alluvial succession increases to 180 m in thickness, the dominant fluvial styles change to low-sinuosity and meandering channels and channel/floodplain ratio reduces. The fluvial architecture of the Río Chico Formation shows two main depositional trends that resulted from changes in accommodation space across the basin. The interpreted break-point coincides with the underlying Cretaceous basin-boundary, thus the synsedimentary extensional reactivation of the pre-existing tectonic lineament generated differential subsidence, delimiting two different accommodation settings.

  16. Phylogeny of Parablennius Miranda Ribeiro, 1915 reveals a paraphyletic genus and recent Indo-Pacific diversification from an Atlantic ancestor.

    PubMed

    Levy, A; von der Heyden, S; Floeter, S R; Bernardi, G; Almada, V C

    2013-04-01

    A molecular phylogeny of 15 (out of 26 recognized) species of Parablennius Miranda Ribeiro, 1915 was constructed based on two mitochondrial and two nuclear gene fragments, and using maximum parsimony, maximum likelihood and Bayesian approaches. The closely related genera Hypleurochilus, Salaria and Scartella were also studied to ascertain their relationship with Parablennius. Phylogenetic analyses were compared with morphology-based taxonomical studies. Hypleurochilus, Salaria and Scartella appear well supported within a clade including all Parablennius, indicating that this genus is paraphyletic. The species pairs P. parvicornis-P. sanguinolentus and P. gattorugine-P. ruber are well-supported and relatively distant from remaining Parablennius. Remaining Parablennius form two distinct well-supported groups: (1) a clade of Atlantic-Mediterranean Parablennius (P. pilicornis, P. marmoreus, P. rouxi, P. salensis and P. tentacularis); (2) a clade including Hypleurochilus, the Indo-Western Pacific Parablennius (P. cornutus, P. intermedius, P. tasmanianus and P. yatabei) and the Atlantic-Mediterranean P. incognitus and P. zvonimiri. Use of a relaxed molecular clock suggests that Indo-Pacific Parablennius originated recently from an Atlantic Parablennius that may have dispersed via southern Africa, rather than via the Tethys seaway. PMID:23277159

  17. Radioactive source materials in Los Estados Unidos de Venezuela

    USGS Publications Warehouse

    Wyant, Donald G.; Sharp, William N.; Rodriguez, Carlos Ponte

    1953-01-01

    This report summarizes the data available on radioactive source materials in Los Estados Unidos de Venezuela accumulated by geologists of the Direccions Tecnica de Geolgia and antecedent agencies prior to June 1951, and the writers from June to November 1951. The investigation comprised preliminary study, field examination, office studies, and the preparation of this report, in which the areas and localities examined are described in detail, the uranium potentialities of Venezuela are summarized, and recommendations are made. Preliminary study was made to select areas and rock types that were known or reported to be radioactive or that geologic experience suggests would be favorable host for uranium deposits, In the office, a study of gamma-ray well logs was started as one means of amassing general radiometric data and of rapidly scanning many of ye rocks in northern Venezuela; gamma-ray logs from about 140 representative wells were examined and their peaks of gamma intensity evaluated; in addition samples were analyzed radiometrically, and petrographically. Radiometic reconnaissance was made in the field during about 3 months of 1951, or about 12 areas, including over 100 localities in the State of Miranda, Carabobo, Yaracuy, Falcon, Lara, Trujillo, Zulia, Merida, Tachira, Bolivar, and Territory Delta Amacuro. During the course of the investigation, both in the filed and office, information was given about geology of uranium deposits, and in techniques used in prospecting and analysis. All studies and this report are designed to supplement and to strengthen the Direccion Tecnica de Geologias's program of investigation of radioactive source in Venezuela now in progress. The uranium potentialities of Los Estados de Venezuela are excellent for large, low-grade deposits of uraniferous phospahtic shales containing from 0.002 to 0.027 percent uranium; fair, for small or moderate-sized, low-grade placer deposits of thorium, rare-earth, and uranium minerals; poor, for

  18. A BamHI repeat element is predominantly associated with the degenerating neo-Y chromosome of Drosophila miranda but absent in the Drosophila melanogaster genome.

    PubMed Central

    Ganguly, R; Swanson, K D; Ray, K; Krishnan, R

    1992-01-01

    In Drosophila miranda, females have two X1 and two evolving X2 chromosomes, and males have one of each of these two X chromosomes and a Y chromosome. In males, the homologue of the X2 chromosome, the neo-Y chromosome, is attached to the Y chromosome and is under the process of degenerative evolution. We have examined a developmentally regulated X2/neo-Y chromosome-linked gene, 549mr, of D. miranda and found that the neo-Y chromosome-linked copy of this gene (549mr-NY) contains an insertional DNA. We discovered that sequences similar to those in the insertional DNA are present in multiple copies in the genome of both sexes of D. miranda but are more abundant in the males. The insertional DNA also identified a 1.1-kilobase BamHI repeat that is present in at least 6-fold excess in the male genome as compared to the female. This BamHI repeat and similar DNA sequences are predominantly concentrated on the evolving neo-Y chromosome, but very few are found on the homologous X2 and other chromosomes. The BamHI repeat also hybridizes with 2.0- and 1.8-kb RNAs and many other RNA species, which together are also approximately 6-fold greater in males. No sequences similar to the BamHI repeat are found in Drosophila melanogaster. Moreover, the BamHI repeat is not homologous to P, copia, or other D. melanogaster transposable elements. This repeat, named the NY element, may be involved in gene disruption and the process of degenerative evolution of the neo-Y chromosome. Images PMID:1311096

  19. Transcriptionally active MuDR, the regulatory element of the mutator transposable element family of Zea mays, is present in some accessions of the Mexican land race Zapalote chico.

    PubMed Central

    de la Luz Gutiérrez-Nava, M; Warren, C A; León, P; Walbot, V

    1998-01-01

    To date, mobile Mu transposons and their autonomous regulator MuDR have been found only in the two known Mutator lines of maize and their immediate descendants. To gain insight into the origin, organization, and regulation of Mutator elements, we surveyed exotic maize and related species for cross-hybridization to MuDR. Some accessions of the mexican land race Zapalote chico contain one to several copies of full-length, unmethylated, and transcriptionally active MuDR-like elements plus non-autonomous Mu elements. The sequenced 5.0-kb MuDR-Zc element is 94.6% identical to MuDR, with only 20 amino acid changes in the 93-kD predicted protein encoded by mudrA and ten amino acid changes in the 23-kD predicted protein of mudrB. The terminal inverted repeat (TIR) A of MuDR-Zc is identical to standard MuDR; TIRB is 11.2% divergent from TIRA. In Zapalote chico, mudrA transcripts are very rare, while mudrB transcripts are as abundant as in Mutator lines with a few copies of MuDR. Zapalote chico lines with MuDR-like elements can trans-activate reporter alleles in inactive Mutator backgrounds; they match the characteristic increased forward mutation frequency of standard Mutator lines, but only after outcrossing to another line. Zapalote chico accessions that lack MuDR-like elements and the single copy MuDR a1-mum2 line produce few mutations. New mutants recovered from Zapalote chico are somatically stable. PMID:9584107

  20. Evidence for maize (Zea mays) in the Late Archaic (3000–1800 B.C.) in the Norte Chico region of Peru

    PubMed Central

    Haas, Jonathan; Creamer, Winifred; Huamán Mesía, Luis; Goldstein, David; Reinhard, Karl; Rodríguez, Cindy Vergel

    2013-01-01

    For more than 40 y, there has been an active discussion over the presence and economic importance of maize (Zea mays) during the Late Archaic period (3000–1800 B.C.) in ancient Peru. The evidence for Late Archaic maize has been limited, leading to the interpretation that it was present but used primarily for ceremonial purposes. Archaeological testing at a number of sites in the Norte Chico region of the north central coast provides a broad range of empirical data on the production, processing, and consumption of maize. New data drawn from coprolites, pollen records, and stone tool residues, combined with 126 radiocarbon dates, demonstrate that maize was widely grown, intensively processed, and constituted a primary component of the diet throughout the period from 3000 to 1800 B.C. PMID:23440194

  1. An Experimental Investigation of the Unit Charge Model of Protein Polymorphism and Its Relation to the Esterase-5 Locus of DROSOPHILA PSEUDOOBSCURA, DROSOPHILA PERSIMILIS, and DROSOPHILA MIRANDA

    PubMed Central

    Cobbs, Gary; Prakash, Satya

    1977-01-01

    The relationship between charge changes and electrophoretic mobility changes is investigated experimentally. The charge of several proteins is altered by reaction with small molecules of known structure and the change in electrophoretic mobility is measured. The method of Ferguson plots is used to separate charge and shape components of mobility differences. The average effect of an amino acid charge change on the mobility of the esterase-5 1.00 allele of Drosophila pseudoobscura is estimated to be 0.046. This estimate is then used to apply the step model of Ohta and Kimura (1973) to electrophoretic mobility data for the esterase-5 locus of D. pseudoobscura and D. miranda. The variation in electrophoretic mobility at this locus was found to be in agreement with the predictions of the step model. PMID:17248784

  2. Pooling birth cohorts in allergy and asthma: European Union-funded initiatives - a MeDALL, CHICOS, ENRIECO, and GA²LEN joint paper.

    PubMed

    Bousquet, Jean; Anto, Josep; Sunyer, Jordi; Nieuwenhuijsen, Mark; Vrijheid, Martine; Keil, Thomas

    2013-01-01

    Long-term birth cohort studies are essential to understanding the life course and childhood predictors of allergy and the complex interplay between genes and the environment (including lifestyle and socioeconomic determinants). Over 100 cohorts focusing on asthma and allergy have been initiated in the world over the past 30 years. Since 2004, several research initiatives funded under the EU Framework Program for Research and Technological Development FP6-FP7 have attempted to identify, compare, and evaluate pooling data from existing European birth cohorts (GA(2)LEN: Global Allergy and European Network, FP6; ENRIECO: Environmental Health Risks in European Birth Cohorts, FP7; CHICOS: Developing a Child Cohort Research Strategy for Europe, FP7; MeDALL: Mechanisms of the Development of ALLergy, FP7). However, there is a general lack of knowledge about these initiatives and their potentials. The aim of this paper is to review current and past EU-funded projects in order to make a summary of their goals and achievements and to suggest future research needs of these European birth cohort networks.

  3. A new species of Heterosentis Van Cleave, 1931 (Acanthocephala: Arhythmacanthidae) parasitic in Pseudopercis numida Miranda Ribeiro, 1903 (Perciformes: Pinguipedidae) from southeastern Brazilian coastal zone.

    PubMed

    Vieira, Fabiiano M; Felizardo, Nilza N; Luque, José L

    2009-06-01

    Heterosentis brasiliensis n. sp. (Acanthocephala, Arhythmacanthidae), parasitic in namorado sandperch Pseudopercis numida Miranda-Ribeiro, 1903 (Perciformes, Pinguipedidae) from the littoral of Cabo Frio, State of Rio de Janeiro, Brazil, is described and illustrated herein. Heterosentis brasiliensis n. sp. differs from all congeneric species by having 10 longitudinal rows of hooks in the proboscis, 6 or 7 hooks in each row, 3 or 4 small basal hooks in each row, and spines in the anterior ventral surface of the body. The similar species, Heterosentis heteracanthus (Linstow, 1896) and Heterosentis caballeroi Gupta & Fatma, 1983, also have 10 longitudinal rows of hooks, but H. heteracanthus differs from the new species by possessing trunk spines in the ventral and dorsal body surface. Heterosentis caballeroi differs from H. brasiliensis by the presence of 1 apical and 1 subapical hook in each longitudinal row; the largest apical, subapical, and basal hooks; lemnisci that are smaller than the proboscis receptacles; and a pre-equatorial male reproductive system. This is the first record of a Heterosentis species in a pinguipedid fish and from Brazilian coastal zone.

  4. Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil.

    PubMed

    Freitas, T M S; Prudente, B S; Oliveira, V A; Oliveira, M N C; Prata, E G; Leão, H; Montag, L F A

    2015-08-01

    This study investigates the influence of the flood pulse on the reproductive biology of the auchenipterids Tocantisia piresi (Miranda Ribeiro, 1920) and Auchenipterus nuchalis (Spix & Agassiz, 1829) from the middle Xingu River in the Brazilian state of Pará. The specimens were collected every three months between April, 2012, and January, 2014, covering four distinct periods (flood, ebb, dry, and filling). The sex ratio, size at first maturity, gonadosomatic index, and condition factor were analysed in the two species, and evaluated in the context of the different hydrological periods. A total of 897 specimens of T. piresi were collected, of which 467 were female, and 430 males, and 383 A. nuchalis (286 females and 97 males). In T. piresi, the sex ratio was biased only in the filling and ebb periods, whereas in A. nuchalis, it departed significantly from the expected ratio of 1:1 in all periods, with a predominance of females. The female T. piresi mature at a smaller size than the males, with the opposite of the pattern being recorded in A. nuchalis. In T. piresi, the breeding peak was observed during the low water periods, whereas in A. nuchalis, the peak was recorded in the flood periods. Male and female T. piresi presented similar positively allometric growth rates, whereas in A. nuchalis, growth was negatively allometric, but rates were different between genders. A higher condition factor was recorded in the females of both species during the ebb period. Overall, the results of this study reveals distinct flood pulse effects on the reproductive parameters of the two auchenipterid species studied; for A. nuchalis the spawning seems to happen at the flood period and for T. piresi at the dry season of the middle Xingu River.

  5. Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil.

    PubMed

    Freitas, T M S; Prudente, B S; Oliveira, V A; Oliveira, M N C; Prata, E G; Leão, H; Montag, L F A

    2015-08-01

    This study investigates the influence of the flood pulse on the reproductive biology of the auchenipterids Tocantisia piresi (Miranda Ribeiro, 1920) and Auchenipterus nuchalis (Spix & Agassiz, 1829) from the middle Xingu River in the Brazilian state of Pará. The specimens were collected every three months between April, 2012, and January, 2014, covering four distinct periods (flood, ebb, dry, and filling). The sex ratio, size at first maturity, gonadosomatic index, and condition factor were analysed in the two species, and evaluated in the context of the different hydrological periods. A total of 897 specimens of T. piresi were collected, of which 467 were female, and 430 males, and 383 A. nuchalis (286 females and 97 males). In T. piresi, the sex ratio was biased only in the filling and ebb periods, whereas in A. nuchalis, it departed significantly from the expected ratio of 1:1 in all periods, with a predominance of females. The female T. piresi mature at a smaller size than the males, with the opposite of the pattern being recorded in A. nuchalis. In T. piresi, the breeding peak was observed during the low water periods, whereas in A. nuchalis, the peak was recorded in the flood periods. Male and female T. piresi presented similar positively allometric growth rates, whereas in A. nuchalis, growth was negatively allometric, but rates were different between genders. A higher condition factor was recorded in the females of both species during the ebb period. Overall, the results of this study reveals distinct flood pulse effects on the reproductive parameters of the two auchenipterid species studied; for A. nuchalis the spawning seems to happen at the flood period and for T. piresi at the dry season of the middle Xingu River. PMID:26691087

  6. The strength of Miranda's lithosphere

    NASA Technical Reports Server (NTRS)

    Pappalardo, Robert; Greeley, Ronald

    1991-01-01

    In attempting to understand the endogenic processes which have shaped the surface of an icy satellite, it is desirable to quantify the failure strength of the satellite's lithosphere. In a crust that is fractured on a large scale, frictional sliding along pre-existing fractures occurs in response to lower differential stresses than required to initiate fracture of pristine rock, thus governing failure of a brittle lithosphere. Failure is predicted along favorably oriented fracture planes; if fractures of all orientations are assumed to be present in the crust (as is expected of a heavily cratered lithosphere), frictional failure relations are directly applicable. The Coulomb criterion predicts that the shear stress (sigma sub t) and normal stress (sigma sub n) components on a fracture plane at failure are related as sigma sub t = mu-sigma sub n + S sub o, where S sub o is the cohesion and mu is the coefficient of friction. At moderate to high pressures, the frictional sliding strength of most materials is found to be sigma sub t = 0.85 sigma sub n.

  7. Well known outstanding geoid and relief depressions as regular wave woven features on Eartg (Indian geoid minimum), Moon (SPA basin), Phobos (Stickney crater), and Miranda (an ovoid).

    NASA Astrophysics Data System (ADS)

    Kochemasov, Gennady G.

    2010-05-01

    by the sector highest elevation. Procellarum Ocean is filled with basalts and Ti-basalts. The SPA basin must be filled with even denser rocks. One expects here feldspar-free, pyroxene enriched rocks with some admixture of Fe metal and troilite. The spectral observations of Carle Pieters [4] confirm orthopyroxene enrichment and absence of feldspar. Enigmatic large and deep depression of crater Stickney on Phobos with an appropriate scale adjustment to much larger Earth and Moon occupies a similar structural position to the Indian geoid minimum and the SPA basin. Such situation cannot be random and proves a common origin of these remarkable tectonic features at so different celestial bodies. This conclusion is reinforced by taking for a comparison another small heavenly body- Uranus satellite Miranda. Imaged by Voyager 2 spacecraft in 1986 it shows two kinds of terrains (PIA01980 & others). Subsided provinces (ovoids) characterized by intensive curvilinear folding and faulting interrupt uplifted densely cratered old provinces. One of the deeply subsided ovoids with curvilinear folds pattern (compression under subsidence) perfectly fits into a sector boundary. References: [1] Kochemasov G. (1999) Theorems of wave planetary tectonics // Geophys. Res. Abstr., V.1, #3, 700. [2] Kochemasov G.G. (1998) The Moon: Earth-type sectoral tectonics, relief and relevant chemical features // The 3rd International Confernce on Exploration and Utilization of the Moon, Oct. 11-14, 1998, Moscow, Russia, Abstracts, p. 29. [3] Kochemasov G.G. (1998) Moon-Earth: similarity of sectoral organization // 32nd COSPAR Scientific Assembly, Nagoya, Japan, 12-19 July 1998, Abstracts, p. 77. [4] Pieters C. (1997) Annales Geophys., v. 15, pt. III, p. 792.

  8. The CHICO (Children's Cough) Trial protocol: a feasibility randomised controlled trial investigating the clinical and cost-effectiveness of a complex intervention to improve the management of children presenting to primary care with acute respiratory tract infection

    PubMed Central

    Turnbull, Sophie L; Redmond, Niamh M; Lucas, Patricia; Cabral, Christie; Ingram, Jenny; Hollinghurst, Sandra; Hay, Alastair D; Peters, Tim J; Horwood, Jeremy; Little, Paul; Francis, Nick; Blair, Peter S

    2015-01-01

    Introduction While most respiratory tract infections (RTIs) will resolve without treatment, many children will receive antibiotics and some will develop severe symptoms requiring hospitalisation. There have been calls for evidence to reduce uncertainty regarding the identification of children who will and will not benefit from antibiotics. The aim of this feasibility trial is to test recruitment and the acceptance of a complex behavioural intervention designed to reduce antibiotic prescribing, and to inform how best to conduct a larger trial. Methods and analysis The CHICO (Children's Cough) trial is a single-centre feasibility cluster randomised controlled trial (RCT) comparing a web-based, within-consultation, behavioural intervention with usual care for children presenting to general practitioner practices with RTI and acute cough. The trial aims to recruit at least 300 children between October 2014 and April 2015, in a single area in South West England. Following informed consent, demographic information will be recorded, and symptoms and signs measured. Parents/carers of recruited children will be followed up on a weekly basis to establish symptom duration, resource use and cost of the illness to the parent until the child's cough has resolved or up to 8 weeks, whichever occurs earlier. A review of medical notes, including clinical history, primary care reconsultations and hospitalisations will be undertaken 2 months after recruitment. The trial feasibility will be assessed by: determining acceptability of the intervention to clinicians and parent/carers; quantifying differential recruitment and follow-up; determining intervention fidelity; the success in gathering the data necessary to conduct a cost-effectiveness analysis; and collecting data about antibiotic prescribing rates to inform the sample size needed for a fully powered RCT. Ethics and dissemination The study was approved by the North West—Haydock Research Ethics Committee, UK (reference

  9. An innovative, interdisciplinary, and multi-technique study of gilding and painting techniques in the decoration of the main altarpiece of Miranda do Douro Cathedral (XVII-XVIII(th) centuries, Portugal).

    PubMed

    Sandu, Irina Crina Anca; Murta, Elsa; Veiga, Rita; Muralha, Vânia Solange F; Pereira, Manuel; Kuckova, Stepanka; Busani, Tito

    2013-07-01

    The research results presented in this paper are part of a larger study on the materials and techniques used in polychrome altarpieces of gilded woodcarving decoration ("talha dourada") in Portugal. The paper focuses on a narrative Portuguese Altarpiece from Miranda do Douro, considered one of the masterpieces of "talha dourada" among all the retables of the Iberian Peninsula in XVII(th) and XVIII(th) centuries. Although on the Portuguese territory, the altarpiece was made by artists from the Royal Spanish school of Valladolid, under a mannerist style. Thus the study opens a window on the artists' circulation between Spain and Portugal and influences of the Spanish schools in Baroque epoch on the Portuguese "talha". During its history this altarpiece underwent several transformations and extensive conservation treatments in 1989. On this occasion more than 50 samples were collected and analyzed using an interdisciplinary multi-technique methodology. 27 of these samples are chosen for this study in order to investigate the chromatic palette, the materials and techniques used in the polychromy of the retable. A novel protocol of investigation using different conventional and unconventional analytical techniques (OM + fluorescent staining tests on cross-sections, Raman microscopy, XRD, XRF, X-ray micro-CT, SEM-EDX, MALDI-TOF-MS and LC-MS/MS) was established within an innovative research project (http://sites.fct.unl.pt/gilt-teller/) and applied on these samples. This protocol is necessary to confirm the results obtained in the 1989 campaign and to have further insight into the gilding and polychrome decoration materials and techniques and the additional information reported in the historical documents. The material and technical history of this important altarpiece will be thus re-documented from a scientific perspective, meant to confirm and bring new information on the decorative technique used in the creation of this complex Portuguese monument. PMID:23650028

  10. Disminuyen en los Estados Unidos las infecciones por VPH.

    Cancer.gov

    La infección por los tipos del virus del papiloma humano (VPH) en el blanco de la vacuna cuadrivalente se redujo en casi dos tercios en las adolescentes desde que se recomendó la vacunación en los Estados Unidos.

  11. Faculty Activity Analysis in the Universidad Tecnica Del Estado Campuses.

    ERIC Educational Resources Information Center

    Karadima, Oscar

    An analysis of academic activities of college faculty at the eight campuses of Chile's Universidad Tecnica del Estado was conducted. Activities were grouped into seven categories: direct teaching, indirect teaching, research, community services, faculty development, academic administration, and other activities. Following the narrative…

  12. Miranda Rights: Implications for Juveniles with Disabilities

    ERIC Educational Resources Information Center

    Katsiyannis, Antonis; Barrett, David E.; Losinski, Mickey L.

    2011-01-01

    Juvenile delinquency in the United States has been a persistent concern for decades. Consequently, because more juveniles have been referred to juvenile court and the arrest rate of preteen offenders has increased to almost three times that of older youth, the persistent and often controversial issue of the capacity of juvenile offenders to waive…

  13. H3+: superficies de energía potencial, estados y transiciones rovibracionales

    NASA Astrophysics Data System (ADS)

    Aguado, M. Paniagua Y. A.

    Hemos calculado varias superficies globales de energía potencial para el estado fundamental y excitados del sistema H3+ en más de ocho mil geometrías diferentes usando una base (9s 3p 1d)/[4s 3p 1d] en cada átomo de Hidrógeno y mediante un método de cálculo de interacción de configuraciones completa (FCI). Hemos ajustado las superficies a formas analíticas del tipo Aguado y Paniagua con un error promedio menor de 50 cm-1 y menor en el pozo de potencial del estado fundamental. Finalmente hemos calculado y analizado los niveles vibracionales para los dos estados electrónicos más bajos, siendo la desviación respecto de los mejores valores publicados, tanto experimentales como teóricos, de unos pocos números de onda.

  14. COMPARATIVE ECLOGICAL CONDITION OF BAYOUS TEXAR, CHICO AND GRANDE

    EPA Science Inventory

    Water and sediment quality in three urban bayous or tidal estuaries located near Pensacola, Florida, were determined at 23 sampling stations over a three year period during which hurricane and dredging activity occurred. Our primary objective was to determine the environmental co...

  15. Informe Anual a la Nación sobre el Estado del Cáncer, 1975 a 2012

    Cancer.gov

    El Informe Anual a la Nación sobre el Estado del Cáncer, 1975 a 2012, es una actualización de los índices de casos nuevos, muertes y tendencias de los cánceres más comunes en los Estados Unidos.

  16. Specimen Days: The Teaching Diaries of Miranda Field.

    ERIC Educational Resources Information Center

    Field, Miranda

    2002-01-01

    Describes the author's experiences teaching Girl Scouts writing and poetry. Concludes that she learned many crucial lessons from her students including lessons on power relations in the classroom, on communication across cultural and even generational divides, and on the varieties of poetry that can be made by the varieties of imaginative…

  17. Actividad funcional cerebral en estado de reposo: REDES EN CONEXIÓN

    PubMed Central

    Proal, Erika; Alvarez-Segura, Mar; de la Iglesia-Vayá, Maria; Martí-Bonmatí, Luis; Castellanos, F. Xavier

    2015-01-01

    Resumen El análisis de la conectividad funcional mediante resonancia magnética funcional (RMf) puede llevarse a cabo durante la realización de una tarea, la percepción de un estímulo o en estado de reposo. Estos análisis han demostrado su fiabilidad y reproducibilidad con diferentes enfoques (matemáticos, estadísticos, físicos) para seleccionar los vóxeles activados. El estudio de la señal de baja frecuencia en la actividad cerebral a través del contraste BOLD en estado de reposo ha revelado patrones de actividad cortical sincronizados, permitiendo describir la arquitectura funcional intrínseca del cerebro humano. La comunidad científica internacional dispone de recursos compartidos que contribuirán mediante este análisis de RMf en estado de reposo a la obtención de diagnósticos y tratamientos más precisos y avanzados en el campo de las neurociencias. PMID:21365601

  18. La guerra de los Estados Unidos contra la inmigración. Efectos paradójicos1

    PubMed Central

    Massey, Douglas S.; Pren, Karen A.

    2016-01-01

    Resumen A finales de la década de los cincuenta, Estados Unidos permitía la entrada de aproximadamente medio millón de inmigrantes mexicanos al año, de los cuales 450.000 entraban con visados de trabajo temporal y 50.000 llegaban con visados de residentes permanentes. A mediados de los años sesenta, los cambios en la política migratoria de Estados Unidos realizados en nombre de los derechos civiles redujeron drásticamente las oportunidades de entrada legal a Estados Unidos. Se eliminaron los visados de trabajo temporal y se limitaron los visados de residentes a 20.000 por año. Con las oportunidades de entrada legal restringidas, los flujos migratorios ya establecidos simplemente continuaron, fuera de los límites legales, dando comienzo a una inesperada reacción en cadena de eventos que culminaron en una guerra total contra los inmigrantes y el rápido crecimiento -sin precedentes- de población residente no autorizada en Estados Unidos. El presente artículo demuestra que el aumento de inmigración indocumentada en los Estados Unidos y el crecimiento de la población sin papeles son un producto de políticas migratorias y fronterizas mal concebidas. PMID:27076695

  19. Developing Flexible Dual Master's Degree Programs at UPAEP (Universidad Popular Autonoma del Estado de Puebla) and OSU (Oklahoma State University)

    ERIC Educational Resources Information Center

    Fabregas-Janeiro, Maria G.; de la Parra, Pablo Nuno

    2012-01-01

    In 2006, UPAEP (Universidad Popular Autonoma del Estado de Puebla) and OSU (Oklahoma State University) signed a MOU (memorandum of understanding) to develop more than 20 dual master's degree programs. This special partnership has allowed students from Mexico and the United States to study two master degree programs, in two languages, in two…

  20. Strategic Planning for Institutions of Higher Education: A Content Analysis for the Universidad Tecnica del Estado Planning System.

    ERIC Educational Resources Information Center

    Karadima, Oscar

    Ten-year development plans of each of the eight campuses of the Universidad de Santiago de Chile, formerly called Universidad Tecnica del Estado, are evaluated, using content analysis. In addition to narrative descriptions, diagrams illustrate the features of each plan, which covers the period 1983-1993. Topics covered by the plans were grouped…

  1. FLOATING COMMUNITIES OF ALGAE IN AN ARTIFICIAL POND IN THE PARQUE DO ESTADO, SÃO PAULO, BRAZIL(1).

    PubMed

    de Mattos Bicudo, C E; Teixeira Bicudo, R M

    1967-12-01

    A fresluvater floating algal community was repeatedly observed in an artificial pond in the Parque do Estado São Paulo, Brazil. The ontogeny and composition of the community are discussed and are related to oxygen liberation during photosynthesis of the periphyton, or of the pond-bottom algne, which carries up portions of the algae growing there. PMID:27065035

  2. [Men of the sugarcane fields and their hospitals: the architecture of health under the Estado Novo].

    PubMed

    Monteiro, Marcia Rocha

    2011-12-01

    The article explores the emergence of an architectural heritage in the realm of healthcare assistance for workers in the sugarcane agroindustry in Brazil following enactment of the law known as the Estatuto da Lavoura Canavieira (1941), under the auspices of the Instituto do Açúcar e do Álcool and as part of Estado Novo policies (1937-1945). The institute proposed solutions based on surveys conducted at sugarcane mills in cane-producing states and on the medical and hospital system adopted by the institute's enlightened bureaucracy in the 1940s, which took the U.S. system as its model. Special focus is given to the central hospitals in Pernambuco and especially in Alagoas, which opposed institute guidelines.

  3. Susceptibility mapping in the Río El Estado watershed, Pico de Orizaba volcano, Mexico

    NASA Astrophysics Data System (ADS)

    Legorreta Paulin, G.; Bursik, M. I.; Lugo Hubp, J.; Paredes Mejía, L.; Aceves Quesada, F.

    2013-12-01

    In volcanic terrains, dormant stratovolcanoes are very common and can trigger landslides and debris flows continually along stream systems, thereby affecting human settlements and economic activities. It is important to assess their potential impact and damage through the use of landslide inventory maps and landslide models. This poster provides an overview of the on-going research project (Grant SEP-CONACYT no 167495) from the Institute of Geography at the National Autonomous University of Mexico (UNAM) that seeks to conduct a multi-temporal landslide inventory and produce a landslide susceptibility map by using Geographic Information Systems (GIS). The Río El Estado watershed on the southwestern flank of Pico de Orizaba volcano, the highest mountain in Mexico, is selected as a study area. The catchment covers 5.2 km2 with elevations ranging from 2676.79 to 4248.2 m a.s.l. and hillslopes between 5° and 56°. The stream system of Río El Estado catchment erodes Tertiary and Quaternary lavas, pyroclastic flows, and fall deposits. The geologic and geomorphologic factors in combination with high seasonal precipitation, high degree of weathering, and steep slopes predispose the study area to landslides. The method encompasses two main levels of analysis to assess landslide susceptibility. The first level builds a historic landslide inventory. In the study area, an inventory of more than 100 landslides was mapped from interpretation of multi-temporal aerial orthophotographs and local field surveys to assess and describe landslide distribution. All landslides were digitized into a GIS, and the spatial geo-database of landslides was constructed from standardized GIS datasets. The second level calculates the susceptibility for the watershed. Multiple Logistic Regression (MLR) was used to examine the relationship between landsliding and several independent variables (elevation, slope, terrain curvature, flow direction, saturation, contributing area, land use, and geology

  4. El Informe a la Nación sobre el Estado del Cáncer, 1975-2012

    Cancer.gov

    El Informe a la Nación sobre el Estado del Cáncer (1975-2012) indica que continuó la baja de tasas de mortalidad de todos los cánceres juntos, así como de la mayoría de los cánceres en hombres y mujeres de todos los grupos raciales y étnicos principales.

  5. Servicio de Mapas en Internet para la Salud Ambiental en la Region Fronteriza Entre los Estados Unidos y Mexico

    USGS Publications Warehouse

    Buckler, Denny; Stefanov, Jim

    2004-01-01

    La region fronteriza de los Estados Unidos y Mexico abarca una gran diversidad de ambientes fisicos y habitaciones, entre los cuales estan los humedales, desiertos, pastos, montanas, y bosques. Estos a su vez son unicos en cuanto a su diversidad de recursos acuaticos minerales, y biologicos. La region se interconecta economica, politica, y socialmente debido a su herencia binacional. En 1995, cerca de 11 millones de habitantes vivian en la zona adyacente a la frontera. Un estudio sugiere que esa poblacion podria doblarse antes del ano 2020.

  6. [Proposal for early detection of ethanol consumption in students of the Universidad Autónoma del Estado de Morelos].

    PubMed

    García-Jiménez, Sara; Erazo-Mijares, Miguel; Toledano-Jaimes, Cairo D; Monroy-Noyola, Antonio; Bilbao-Marcos, Fernando; Sánchez-Alemán, Miguel A; Déciga-Campos, Myrna

    2016-01-01

    The present study determined through analytic techniques the quantification of some biomarkers that have been useful to detect early ethanol consumption in a college population. A group of 117 students of recent entry to the Universidad Autónoma del Estado de Morelos was analyzed. The enzyme determination of aspartate aminotransferase, alanine aminotransferase, and gamma glutamyltransferase as metabolic markers of ethanol, as well as the carbohydrate-deficient transferrin (CDT) detected by high chromatographic liquid (up to 1.8% of CDT), allowed us to identify that 6% of the college population presented a potential risk of alcohol consumption. The use of the biochemical-analytical method overall with the psychological drug and a risk factor instrument established by the Universidad Autónoma del Estado de Morelos permit us to identify students whose substance abuse consumption puts their terminal efficiency at risk as well as their academic level. The timely detection on admission to college can monitor and support a student consumer's substance abuse.

  7. Nuevos escenarios de la migración México-Estados Unidos. Las consecuencias de la guerra antiinmigrante

    PubMed Central

    MASSEY, Douglas S.; PREN, Karen A.; DURAND, Jorge

    2010-01-01

    La historia de la migración México-Estados Unidos se caracteriza por una serie de periodos durante los cuales los patrones migratorios se transforman y evolucionan como respuesta a los cambios en la política migratoria de Estados Unidos. En la década de 1990 se dio uno de estos cambios, lo que provocó el paso de la ‘era de la contradicción’ a la ‘era de la marginalización’. Actualmente, un gran número de migrantes indocumentados permanecen al margen de la ley, precisamente en un periodo en el que las penas se han incrementado y la persecución ha alcanzado niveles récord. De manera cada vez más notoria, los migrantes indocumentados, por la represión interna y fronteriza, quedan obligados a romper los lazos que los vinculaban con sus lugares de destino, pero al mismo tiempo se sienten cada vez más extraños en una tierra donde la aplicación de políticas antiinmigrantes es cosa de todos los días, lo que los sitúa en una posición de marginalización y gran vulnerabilidad. PMID:21209790

  8. [Proposal for early detection of ethanol consumption in students of the Universidad Autónoma del Estado de Morelos].

    PubMed

    García-Jiménez, Sara; Erazo-Mijares, Miguel; Toledano-Jaimes, Cairo D; Monroy-Noyola, Antonio; Bilbao-Marcos, Fernando; Sánchez-Alemán, Miguel A; Déciga-Campos, Myrna

    2016-01-01

    The present study determined through analytic techniques the quantification of some biomarkers that have been useful to detect early ethanol consumption in a college population. A group of 117 students of recent entry to the Universidad Autónoma del Estado de Morelos was analyzed. The enzyme determination of aspartate aminotransferase, alanine aminotransferase, and gamma glutamyltransferase as metabolic markers of ethanol, as well as the carbohydrate-deficient transferrin (CDT) detected by high chromatographic liquid (up to 1.8% of CDT), allowed us to identify that 6% of the college population presented a potential risk of alcohol consumption. The use of the biochemical-analytical method overall with the psychological drug and a risk factor instrument established by the Universidad Autónoma del Estado de Morelos permit us to identify students whose substance abuse consumption puts their terminal efficiency at risk as well as their academic level. The timely detection on admission to college can monitor and support a student consumer's substance abuse. PMID:27160612

  9. The Prince, the Captain and "The State": An Examination of the Mesquita Family Ownership of "O Estado de Sao Paulo" to 1969.

    ERIC Educational Resources Information Center

    Etsinger, Jean

    Julio Mesquita joined the staff of "O Estado de Sao Paulo" in 1885 and became a director in 1891, when he also began his first term as a deputy of the Sao Paulo state assembly. Until his death in 1927, Mesquita guided the newspaper's growth in all respects--editorial, political, technological, and economic. Julio de Mesquita Filho assumed…

  10. Chicos, Chucos, and Chamacos: Perspectives in Chicana/o Educational History

    ERIC Educational Resources Information Center

    Perez, Mario Rios

    2009-01-01

    Thomas Woody, a reputable and well-published historian of education during the early twentieth century, made a thrashing call to historians in the field nearly sixty years ago in his article titled "Fields That Are White," where he depicted the history of education as a barren landscape awaiting the arrival of scholars who would alter the…

  11. Review of Proposal for a Community College Center in Chico. Report 09-30

    ERIC Educational Resources Information Center

    Jones, Jessika

    2009-01-01

    The California Postsecondary Education Commission (CPEC) recognizes the importance of educational centers as a cost-effective means for meeting increased student demand. Educational centers are an economical way of serving a region's educational needs because they often involve collaboration and shared facility use with high schools, university…

  12. Petrogenesis of fertile mantle peridotites from the Monte del Estado massif (southwest Puerto Rico): a preserved section of Proto-Caribbean oceanic lithospheric mantle?

    NASA Astrophysics Data System (ADS)

    Marchesi, Claudio; Jolly, Wayne T.; Lewis, John F.; Garrido, Carlos J.; Proenza, Joaquín. A.; Lidiak, Edward G.

    2010-05-01

    The Monte del Estado massif is the largest and northernmost serpentinized peridotite belt in southwest Puerto Rico. It is mainly composed of spinel lherzolite and minor harzburgite with variable clinopyroxene modal abundances. Mineral and whole rock major and trace element compositions of peridotites coincide with those of fertile abyssal peridotites from mid ocean ridges. Peridotites lost 2-14 wt% of relative MgO and variable amounts of CaO by serpentinization and seafloor weathering. HREE contents in whole rock indicate that the Monte del Estado peridotites are residues after low to moderate degrees (2-15%) of fractional partial melting in the spinel stability field. However, very low LREE/HREE and MREE/HREE in clinopyroxene cannot be explained by melting models of a spinel lherzolite source and support that the Monte del Estado peridotites experienced initial low fractional melting degrees (~ 4%) in the garnet stability field. The relative enrichment of LREE in whole rock is not due to secondary processes but probably reflects the capture of percolating melt fractions along grain boundaries or as microinclusions in minerals, or the presence of exotic micro-phases in the mineral assemblage. We propose that the Monte del Estado peridotite belt represents a section of ancient Proto-Caribbean (Atlantic) lithospheric mantle originated by seafloor spreading between North and South America in the Late Jurassic-Early Cretaceous. This portion of oceanic lithospheric mantle was subsequently trapped in the forearc region of the Greater Antilles paleo-island arc generated by the northward subduction of the Caribbean plate beneath the Proto-Caribbean ocean. Finally, the Monte del Estado peridotites belt was emplaced in the Early Cretaceous probably as result of the change in subduction polarity of the Greater Antilles paleo-island arc without having been significantly modified by subduction processes.

  13. Informe Anual a la Nación sobre el Estado del Cáncer con una sección especial sobre la prevalencia d

    Cancer.gov

    El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos

  14. An Evaluation of "Miranda" Rights and Interrogation in Autism Spectrum Disorders

    ERIC Educational Resources Information Center

    Salseda, Lindsay M.; Dixon, Dennis R.; Fass, Tracy; Miora, Deborah; Leark, Robert A.

    2011-01-01

    The primary deficits present in autism spectrum disorders (ASD) may lead to increased susceptibility to involvement in the criminal justice system. The same deficits may also cause individuals with ASD to be more vulnerable to interrogation techniques and other aspects of the legal system. Due to the increased level of vulnerability as well as…

  15. Three new species of Proceratophrys Miranda-Ribeiro 1920 from Brazilian Cerrado (Anura, Odontophrynidae).

    PubMed

    Brandão, Reuber Albuquerque; Caramaschi, Ulisses; Vaz-Silva, Wilian; Campos, Leandro Ambrósio

    2013-01-01

    Based on the analyses of specimens collected at several areas in the Cerrado domain from Central Brazil and others housed in scientific collections and on specimens collected at the type-locality, herein we describe three new species belonging to the P. cristiceps group: Proceratophrys bagnoi sp. nov., from UHE Serra da Mesa power plant (13°49'47.5"S, 48°19'17"W; 570 m a.s.l.; WGS84 datum), Municipality of Minaçu, State of Goiás; Proceratophrys branti sp. nov., from Jalapão, Municipality of Mateiros (05o15'25"S, 48o12'00"W; 109 m a.s.l.; WGS84 datum), State of Tocantins; and Proceratophrys dibernardoi sp. nov., Municipality of Mineiros (17o33'52"S, 52o33'20"W; 803 m a.s.l.; WGS84 datum), State of Goiás. The diversity of Proceratophrys in Brazilian Cerrado is still underscored and several species will be described in the following years.

  16. Three new species of Proceratophrys Miranda-Ribeiro 1920 from Brazilian Cerrado (Anura, Odontophrynidae).

    PubMed

    Brandão, Reuber Albuquerque; Caramaschi, Ulisses; Vaz-Silva, Wilian; Campos, Leandro Ambrósio

    2013-01-01

    Based on the analyses of specimens collected at several areas in the Cerrado domain from Central Brazil and others housed in scientific collections and on specimens collected at the type-locality, herein we describe three new species belonging to the P. cristiceps group: Proceratophrys bagnoi sp. nov., from UHE Serra da Mesa power plant (13°49'47.5"S, 48°19'17"W; 570 m a.s.l.; WGS84 datum), Municipality of Minaçu, State of Goiás; Proceratophrys branti sp. nov., from Jalapão, Municipality of Mateiros (05o15'25"S, 48o12'00"W; 109 m a.s.l.; WGS84 datum), State of Tocantins; and Proceratophrys dibernardoi sp. nov., Municipality of Mineiros (17o33'52"S, 52o33'20"W; 803 m a.s.l.; WGS84 datum), State of Goiás. The diversity of Proceratophrys in Brazilian Cerrado is still underscored and several species will be described in the following years. PMID:25113702

  17. Mycobacterium tuberculosis population structure and molecular epidemiological analysis in Sucre municipality, Miranda state, Venezuela.

    PubMed

    Patiño, Margareth A; Abadía, Edgar; Solalba Gómez; Maes, Mailis; Muñoz, Mariana; Gómez, Daniela; Guzmán, Patricia; Méndez, María Victoria; Ramirez, Carmen; Mercedes, España; de Waard, Jacobus; Takiff, Howard

    2014-12-01

    Sucre municipality is a large, densely populated marginal area in the eastern part of Caracas, Venezuela that consistently has more cases of tuberculosis than other municipalities in the country. To identify the neighborhoods in the municipality with the highest prevalence of tuberculosis, and determine whether the Mycobacterium tuberculosis strain distribution in this municipality is different from that previously found in the western part of Caracas and the rest of Venezuela, we collected data on all tuberculosis cases in the municipality diagnosed in 2005-6. We performed two separate molecular epidemiological studies, spoligotyping 44 strains in a first study, and spoligotyping 131 strains, followed by MIRU-VNTR 15 on 21 clustered isolates in the second. With spoligotyping, the most common patterns were Shared International Type SIT17 (21%); SIT42 (15%); SIT93 (11%); SIT20 (7%); SIT53 (6%), a distribution similar to other parts of Venezuela, except that SIT42 and SIT20 were more common. MIRU-VNTR 15 showed that six of seven SIT17 strains examined belonged to a large cluster previously found circulating in Venezuela, but all of the SIT42 strains were related to a cluster centered in the neighborhoods of Unión and Maca, with a MIRU-VNTR pattern not previously seen in Venezuela. It appears that a large percentage of the tuberculosis in the Sucre municipality is caused by the active transmission of two strain families centered within distinct neighborhoods, one reflecting communication with the rest of the country, and the other suggesting the insular, isolated nature of some sectors. PMID:25558753

  18. Global Vulnerability Assessment in Santa María Tixmadeje, Estado de México, México

    NASA Astrophysics Data System (ADS)

    Monroy Salazar, S.; Novelo-Casanova, D. A.

    2010-12-01

    Santa María Tixmadejé (SMT), Estado de México, Mexico is a town located very close to the Acambay-Tixmadejé fault. This fault is located in the middle of the Trans Volcanic Belt in the center of the Mexican territory and generated a large seismic event in 1912 with magnitude 6.9 which combined with the local vulnerability, caused a disaster. In this work we measure the different vulnerabilities of the SMT community: structural, economical, social and educational. In addition, we determinate the total vulnerability, by summing all estimated vulnerabilities, for the critical facilities identified in this town. Vulnerability was determined using the methodology proposed by National Oceanic Atmospheric Administration (NOAA) and by Disaster Prevention National Center (CENAPRED). Besides, we considered a minimum sample statistically significant of the total houses with a random sampling for our survey. Our results indicate that 50% of the critical facilities have high and very high and the other 50% between low and moderate level of total vulnerability. The results for independent vulnerabilities are as follows: (1) Near to 75% of the community has high and very high level of social vulnerability and the range for the another 25% is between low and moderate; (2) About 43% of the community has high and very high economical vulnerability and 57% low and moderate; (3) Approximately 38% of the population has high and very high educational vulnerability. The 62% present low and moderate vulnerability; and (4) About 42% of the community has very high structural vulnerability and 58% between low and moderate.

  19. Assessing landslide susceptibility, hazards and sediment yield in the Río El Estado watershed, Pico de Orizaba volcano, Mexico

    NASA Astrophysics Data System (ADS)

    Legorreta Paulin, G.; Bursik, M. I.; Lugo Hubp, J.; Aceves Quesada, J. F.

    2014-12-01

    This work provides an overview of the on-going research project (Grant SEP-CONACYT # 167495) from the Institute of Geography at the National Autonomous University of Mexico (UNAM) that seeks to conduct a multi-temporal landslide inventory, analyze the distribution of landslides, and characterize landforms that are prone to slope instability by using Geographic Information Systems (GIS). The study area is the Río El Estado watershed that covers 5.2 km2 and lies on the southwestern flank of Pico de Orizaba volcano.The watershed was studied by using aerial photographs, fieldwork, and adaptation of the Landslide Hazard Zonation Protocol of the Washington State Department of Natural Resources, USA. 107 gravitational slope failures of six types were recognized: shallow landslides, debris-avalanches, deep-seated landslides, debris flows, earthflows, and rock falls. This analysis divided the watershed into 12 mass-wasting landforms on which gravitational processes occur: inner gorges, headwalls, active scarps of deep-seated landslides, meanders, plains, rockfalls, non-rule-identified inner gorges, non-rule-identified headwalls, non-rule-identified converging hillslopes and three types of hillslopes classified by their gradient: low, moderate, and high. For each landform the landslide area rate and the landslide frequency rate were calculated as well as the overall hazard rating. The slope-stability hazard rating has a range that goes from low to very high. The overall hazard rating for this watershed was very high. The shallow slide type landslide was selected and area and volume of individual landslides were retrieved from the watershed landslide inventory geo-database, to establish an empirical relationship between area and volume that takes the form of a power law. The relationship was used to estimate the total volume of landslides in the study area. The findings are important to understand the long-term evolution of the southwestern flank stream system of Pico de

  20. Preparación de los adultos mayores en los Estados Unidos para hacer frente a los desastres naturales: encuesta a escala nacional*

    PubMed Central

    Al-rousan, Tala M.; Rubenstein, Linda M.; Wallace, Robert B.

    2015-01-01

    Objetivos. Nos propusimos determinar el grado de preparación frente a los desastres naturales de los adultos mayores en los Estados Unidos y evaluar los factores que pueden afectar negativamente la salud y la seguridad durante este tipo de incidentes. Métodos. Obtuvimos una muestra de adultos de 50 años en adelante (n = 1 304) de la encuesta del 2010 del Estudio de la Salud y la Jubilación (HRS por su sigla en inglés). La encuesta recogió datos sobre las características demográficas generales, el estado de discapacidad o las limitaciones funcionales, y también sobre factores y comportamientos relacionados con la preparación frente a los desastres. Calculamos una puntuación global de preparación mediante indicadores individuales a fin de evaluar el grado de preparación general. Resultados. La media de la edad de los participantes (n = 1 304) fue de 70 años (desviación estándar [DE] = 9,3). Solo 34,3% informaron que habían participado en un programa formativo o que habían leído materiales sobre la preparación para los desastres. Casi 15% indicaron que usaban dispositivos médicos eléctricos que podían correr riesgo de no funcionar si se interrumpiera el suministro eléctrico. La puntuación de preparación indicó que la edad más avanzada, la discapacidad física y el menor nivel de escolaridad y de ingresos se asociaban independiente y significativamente a un grado de preparación general inferior. Conclusiones. A pesar de la mayor vulnerabilidad ante los desastres y del número cada vez mayor de adultos mayores en los Estados Unidos, muchos de los problemas sustanciales que encontramos son remediables y requieren atención en los sectores de la sociedad dedicados a la atención clínica, a la salud pública y al manejo de situaciones de emergencia.

  1. Allele frequencies of the 15 AmpF/Str Identifiler loci in the population of Metztitlán (Estado de Hidalgo), México.

    PubMed

    Gorostiza, A; González-Martín, A; Ramírez, C López; Sánchez, C; Barrot, C; Ortega, M; Huguet, E; Corbella, J; Gené, M

    2007-03-01

    The 15 AmpF/STR Identifiler loci (D8S1179, D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, vWA, TPOX, D18S51, D5S818 and FGA) were analyzed in the sample of 180 unrelated autochthonous healthy adults born in Meztitlán City from the valley of Metztitlán (Estado de Hidalgo, México). The agreement with Hardy-Weinberg equilibrium was confirmed for all loci. From the forensic point of view, the heterozygosity value, power of discrimination and the a priori chance of exclusion were calculated.

  2. Las propiedades de las estrellas extrañas en el marco de una nueva ecuación de estado para la materia extraña

    NASA Astrophysics Data System (ADS)

    Lugones, G.; Benvenuto, O. G.

    Se estudian las propiedades generales de las estrellas constituídas por materia extraña (ME) en el marco de una nueva ecuación de estado (EOS) en la que consideramos la masa de los quarks como dependiente del número medio de bariones por unidad de volumen. Se asume esta dependencia de forma que los quarks sean livianos (pesados) a densidades altas (bajas). En esta aproximación, la EOS de la ME es similar a la predicha por el modelo de la Bolsa del MIT, pero es significativamente mas dura a bajas densidades. Esta propiedad modifica las propiedades de las estrellas extrañas en forma notable. Encontramos que, con esta nueva EOS, los objetos pueden ser más masivos que en el caso de la EOS de la bolsa del MIT y que, además, pueden presentar mayores redshifts gravitatorios en hasta un 10%. En el caso de las oscilaciones radiales de estos objetos, calculamos la relación período vs. redshift gravitacional y encontramos una expresión analítica simple para el caso de las oscilaciones de objetos de baja masa. Encontramos que, aún con hipótesis muy diferentes en cuanto a la ecuación de estado de la materia extraña, las propiedades generales de estos objetos no se ve afectada en forma fundamental, y, por lo tanto, no deberían ser muy diferentes de las aquí expuestas.

  3. Extension of Drosophila lifespan by cinnamon through a sex-specific dependence on the insulin receptor substrate chico.

    PubMed

    Schriner, Samuel E; Kuramada, Steven; Lopez, Terry E; Truong, Stephanie; Pham, Andrew; Jafari, Mahtab

    2014-12-01

    Cinnamon is a spice commonly used worldwide to flavor desserts, fruits, cereals, breads, and meats. Numerous health benefits have been attributed to its consumption, including the recent suggestion that it may decrease blood glucose levels in people with diabetes. Insulin signaling is an integral pathway regulating the lifespan of laboratory organisms, such as worms, flies, and mice. We posited that if cinnamon truly improved the clinical signs of diabetes in people that it would also act on insulin signaling in laboratory organisms and increase lifespan. We found that cinnamon did extend lifespan in the fruit fly, Drosophila melanogaster. However, it had no effect on the expression levels of the 3 aging-related Drosophila insulin-like peptides nor did it alter sugar, fat, or soluble protein levels, as would be predicted. In addition, cinnamon exhibited no protective effects in males against oxidative challenges. However, in females it did confer a protective effect against paraquat, but sensitized them to iron. Cinnamon provided no protective effect against desiccation and starvation in females, but sensitized males to both. Interestingly, cinnamon protected both sexes against cold, sensitized both to heat, and elevated HSP70 expression levels. We also found that cinnamon required the insulin receptor substrate to extend lifespan in males, but not females. We conclude that cinnamon does not extend lifespan by improving stress tolerance in general, though it does act, at least in part, through insulin signaling.

  4. Air-To-Water Heat Pumps with Radiant Delivery in Low Load Homes: Tucson, Arizona and Chico, California (Fact Sheet)

    SciTech Connect

    Not Available

    2013-11-01

    Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

  5. 78 FR 55225 - Determination of Attainment for the Chico Nonattainment Area for the 2006 Fine Particle Standard...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-10

    ..., Louisiana area); 71 FR 6352 (February 8, 2006) (Ajo, Arizona area); 71 FR 13021 (March 14, 2006) (Yuma... Executive Order Reviews I. Summary of EPA's Proposed Action On October 30, 2012 (77 FR 65651), EPA proposed... 10 and lead NAAQS. See 78 FR 65651, at 65654 (October 30, 2012). EPA notes that on January 4,...

  6. A new derived and highly polymorphic chromosomal race of Liolaemus monticola (Iguanidae) from the 'Norte Chico' of Chile.

    PubMed

    Lamborot, M

    1998-06-01

    A multiple Robertsonian fission chromosomal race of the Liolaemus monticola complex in Chile is described and is shown to be the most derived and the most complex among the Liolaemus examined thus far. The 29 karyotyped lizards analysed from the locality of Mina Hierro Viejo, Petorca, Provincia de Valparaiso, Chile, exhibited a diploid chromosomal number ranging from 42 to 44, and several polymorphisms. The polymorphisms included: a pair 1 fission; a pair 2 fission plus a pericentric inversion in one of the fission products, which moved the NOR and satellite from the tip of the long arm of the metacentric 2 to the short arm of the fission product; a fission in pair 3; a polymorphism for an enlarged chromosome pair 6; and a polymorphism for a pericentric inversion in pair 7. This population is fixed for a fission of chromosome pair 4. A total of 76% of the lizards analysed were polymorphic for one or more pairs of chromosomes. We have compared these data with other Liolaemus monticola chromosomal races and calculated the Hardy-Weinberg ratios for the polymorphic chromosome pairs in this Multiple-Fission race. Karyotypic differences between the Northern (2n = 38-40) and the Multiple-Fission (2n = 42-44) races were attributed mainly to Robertsonian fissions, an enlarged chromosome and pericentric inversions involving the macrochromosomes and one microchromosome pair. PMID:9688513

  7. Examining Wikipedia's Value as an Information Source Using the California State University-Chico Website Evaluation Guidelines

    ERIC Educational Resources Information Center

    Upchurch, John

    2011-01-01

    The purpose of this work is to examine Wikipedia's role as a tool for instruction in website evaluation. Wikipedia's purpose, structural elements and potential failings as an authoritative information source are examined. Also presented are rationales for using Wikipedia as an instructional tool, namely the overwhelming popularity of Wikipedia.…

  8. 77 FR 65651 - Determination of Attainment for the Chico Nonattainment Area for the 2006 Fine Particle Standard...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-30

    ... PM 2.5 ); 76 FR 18650 (April 5, 2011) (Rome, Georgia, 1997 PM 2.5 ); 76 FR 31239 (May 31, 2011... Current Attainment IV. How does EPA's Clean Data Policy apply to this action? A. Application of EPA's... primary and secondary \\1\\ annual and 24-hour standards for PM 2.5 (62 FR 38652). The annual standard...

  9. La inserción en el mercado laboral de los inmigrantes latinos en España y en los Estados Unidos: Diferencias por país de origen y estatus legal

    PubMed Central

    Connor, Phillip; Massey, Douglas

    2013-01-01

    Resumen Este artículo compara los resultados económicos entre los inmigrantes latinoamericanos en España y Estados Unidos. Detectamos un efecto de selección por el que la mayoría de los inmigrantes latinoamericanos en España proceden de Sudamérica de un entorno de clases medias, mientras la mayoría de los inmigrantes que van a los Estados Unidos son centroamericanos de clase baja. Este efecto de selección explica las diferencias transnacionales en la probabilidad de empleo, logro ocupacional y salarios obtenidos. A pesar de las diferencias en los orígenes y las características de los latinoamericanos en ambos países, los factores demográficos, humanos y de capital social parecen operar de forma similar en ambos países; y cuando los modelos se estiman separadamente por estatus legal, descubrimos que los efectos se acentúan más entre los inmigrantes irregulares cuando se los compara con los regulares, especialmente en Estados Unidos. PMID:24532857

  10. Description of the population structure and genetic diversity of tuberculosis in Estado de México, a low prevalence setting from Mexico.

    PubMed

    Zenteno-Cuevas, Roberto; Mendoza-Damián, Fabiola; Muñoz, Irving Cansino; Enciso-Moreno, Leonor; Pérez-Navarro, Lucia Monserrat; Ramírez-Hernández, Ma Dolores; Vázquez-Medina, Karen; Widrobo-García, Lorena; Lauzardo, Michael; Enciso-Moreno, José Antonio

    2015-02-01

    In order to identify the genetic characteristics of the strains of mycobacteria circulating in the Estado de México, one of the states with the lowest prevalence of tuberculosis in Mexico, spoligotyping and 12-loci MIRU-VNTR typing were used to genotype tuberculosis clinical isolates. The average age of the 183 patients analyzed was 50 (± 17) years, drug resistance was noted in 57 (31%) and multidrug resistance in 22 (12%) individuals. The results from the isolates recovered showed that 80% were located in four major Euro-American lineages: Haarlem (17%), LAM (15%), T (20%) and X (29%). Other lineages found in lower proportions were: EAI, S, Beijing, West African, Turkey, Vole and Bovis. Eighteen isolates were orphans. Only 57 isolates were grouped in nine clusters and the SIT119 (X1) showed the highest number of members (23). The LAM lineage showed an increased risk for development of drug resistance (RR=4, IC: 95%: 1.05-14.2, p = 0.03). Despite the important prevalence of four major lineages found and the diversity of strains circulating in the population, we found the presence of one of the largest populations of isolates clustered to the X lineage in a setting from a Latin American country.

  11. The Adventures of Miranda in the Brave New World: Learning in a Web 2.0 Millennium

    ERIC Educational Resources Information Center

    Barnes, Cameron; Tynan, Belinda

    2007-01-01

    This paper looks at the implications of Web 2.0 technologies for university teaching and learning. The latest generation of undergraduates already live in a Web 2.0 world. They have new service expectations and are increasingly dissatisfied with teacher-centred pedagogies. To attract and retain these students, universities will need to rethink…

  12. ZZ/ZW sex chromosome system in the endangered fish Lignobrycon myersi Miranda-Ribeiro, 1956 (Teleostei, Characiformes, Triportheidae)

    PubMed Central

    Rodrigues, Alexandre dos Santos; Medrado, Aline Souza; Diniz, Débora; Oliveira, Claudio; Affonso, Paulo Roberto Antunes de Mello

    2016-01-01

    Abstract Lignobrycon myersi is an endemic fish species from a few coastal rivers in northeastern Brazil. Based on molecular evidence, Lignobrycon myersi and genera Triportheus Cope, 1872, Agoniates Müller & Troschel, 1845, Clupeacharax Pearson, 1924 and Engraulisoma Castro, 1981 were placed in the family Triportheidae. In the present work, we report the first cytogenetic data for Lignobrycon myersi to test the hypothesis that Lignobrycon and Triportheus are closely related. Studied specimens presented 2n=52 with 28 metacentric (m), 18 submetacentric (sm) and six subtelocentric (st) chromosomes for males and 27 m, 19 sm and 6 st for females, characterizing a ZZ/ZW sex chromosome system. The Z chromosome corresponds to the largest chromosome in karyotype while the W is about 50% smaller than the Z and largely heterochromatic. Terminal nucleolus organizer regions, GC-rich sites and 18S rDNA signals were detected on pair 14. However, additional 18S rDNA sites were observed in the W chromosome. The 5S rDNA was mainly detected on long arms of pair 7. The apparent synapomorphic chromosomal traits of Triportheus and Lignobrycon myersi reinforce their close phylogenetic relationship, suggesting that the ZZ/ZW chromosome system in both genera has arisen before cladogenic events. PMID:27551346

  13. Evolutionary cytogenetics of the Hoplias lacerdae, Miranda Ribeiro, 1908 group. A particular pathway concerning the other Erythrinidae fish.

    PubMed

    Morelli, S; Vicari, M R; Bertollo, L A C

    2007-12-01

    The taxonomy/systematics of the Erythrinidae fish is still imprecise, with several doubts on their relationships. Karyotypes and chromosomal characteristics of some species of the Hoplias lacerdae group (Erythrinidae), from different Brazilian hydrographic basins and pisciculture stations, were analyzed in the present study, using conventional Giemsa staining, C-banding, silver staining, Mithramycin and Distamycin/DAPI fluorochromes, and fluorescent in situ hybridization (FISH). A diploid chromosome number of 2n = 50 and karyotypes composed of meta- and submetacentric chromosomes without sex-related differences were found. Only one active NOR (Nucleolar Organizer Region) site was found, which was identified by silver staining (Ag-NOR) and FISH, located on the chromosome pair 11, although additional 45S rDNA sites were also mapped on other chromosome pairs only by FISH. The Ag-NOR of the chromosome pair 11 was found to be GC-rich, appearing positive after Mithramycin staining. Mithramycin-positive/DAPI-negative sites were also observed in the centromeric/pericentomeric regions of the chromosome pairs 4, 6, 15, and 19, which have also affinity to silver nitrate. However, these four sites were not detected by FISH with the rDNA probe, indicating to be only argentophilic GC-rich heterochromatic regions. Chromosome data show that the karyotype evolution in Hoplias lacerdae group is relatively conserved and follows a particular pathway concerning the other Erythrinidae fishes, such as Hoplias malabaricus, Hoplerythrinus unitaeniatus, and Erythrinus erythrinus, in which polytypic karyotypes are found. Thus, the H. lacerdae group shows chromosome features that are not closely related to those of the congeneric H. malabaricus group. These finds, together with genetic and morphologic data, are important tools to be considered in a major revision of the Erythrinidae family, as well as for conservation programs. PMID:18278357

  14. ZZ/ZW sex chromosome system in the endangered fish Lignobrycon myersi Miranda-Ribeiro, 1956 (Teleostei, Characiformes, Triportheidae).

    PubMed

    Rodrigues, Alexandre Dos Santos; Medrado, Aline Souza; Diniz, Débora; Oliveira, Claudio; Affonso, Paulo Roberto Antunes de Mello

    2016-01-01

    Lignobrycon myersi is an endemic fish species from a few coastal rivers in northeastern Brazil. Based on molecular evidence, Lignobrycon myersi and genera Triportheus Cope, 1872, Agoniates Müller & Troschel, 1845, Clupeacharax Pearson, 1924 and Engraulisoma Castro, 1981 were placed in the family Triportheidae. In the present work, we report the first cytogenetic data for Lignobrycon myersi to test the hypothesis that Lignobrycon and Triportheus are closely related. Studied specimens presented 2n=52 with 28 metacentric (m), 18 submetacentric (sm) and six subtelocentric (st) chromosomes for males and 27 m, 19 sm and 6 st for females, characterizing a ZZ/ZW sex chromosome system. The Z chromosome corresponds to the largest chromosome in karyotype while the W is about 50% smaller than the Z and largely heterochromatic. Terminal nucleolus organizer regions, GC-rich sites and 18S rDNA signals were detected on pair 14. However, additional 18S rDNA sites were observed in the W chromosome. The 5S rDNA was mainly detected on long arms of pair 7. The apparent synapomorphic chromosomal traits of Triportheus and Lignobrycon myersi reinforce their close phylogenetic relationship, suggesting that the ZZ/ZW chromosome system in both genera has arisen before cladogenic events. PMID:27551346

  15. Diversity of Sex Chromosome Systems in Ancistrini (Loricariidae, Hypostominae): ZZ/ZW in Ancistrus taunayi Miranda Ribeiro, 1918.

    PubMed

    Thums Konerat, Jocicléia; Bueno, Vanessa; Margarido, Vladimir P; Portela-Castro, Ana L B; Martins-Santos, Isabel C

    2015-01-01

    The karyotype of the Ancistrini catfish Ancistrus taunayi was analyzed by conventional (Giemsa staining, AgNOR staining and C-banding) and molecular cytogenetic (5S and 18S rDNA-FISH) methods. The diploid chromosome number was 2n = 50 (22 metacentrics + 10 submetacentrics + 10 subtelocentrics + 8 acrocentrics) for both sexes. A single NOR-bearing acrocentric chromosome pair (No. 24) was detected after Ag-staining and 18S rDNA-FISH, while 5S rDNA was found only in the subtelocentric pair No. 21. Conspicuous GC-rich heterochromatin blocks corresponded to the NOR sites and were also observed in the distal regions of the acrocentric chromosome pairs Nos. 22 and 25. Chromosome pair No. 22 differed between males and females; in males, only a small interstitial block of GC-rich heterochromatin was present in both chromosomes, whereas in females, 2 blocks of GC-rich heterochromatin flanked a euchromatic region in one of the homologues, suggesting the occurrence of a ZZ/ZW sex chromosome system. Two mechanisms for the origin and evolution of this simple ZZ/ZW sex chromosome system in A. taunayi are proposed: (1) a paracentric inversion followed by amplification of the proximal heterochromatin and (2) amplification of the interstitial heterochromatin followed by a paracentric inversion. Although ZZ/ZW systems have already been described for other Ancistrus species, our results do not show the same pattern, suggesting an independent origin. PMID:26523437

  16. A new species of Pseudopaludicola Miranda-Ribeiro (Leiuperinae: Leptodactylidae: Anura) from the Cerrado of Southeastern Brazil.

    PubMed

    De Andrade, Felipe Silva; De Carvalho, Thiago Ribeiro

    2013-01-22

    A new species of Pseudopaludicola is described from the Cerrado of southeastern Brazil. Pseudopaludicola facureae sp. nov. is diagnosed from the P. pusilla species group by the absence of either T-shaped terminal phalanges or toe tips expanded, and distinguished from almost all recognized taxa currently assigned to Pseudopaludicola (except P. canga, P. giarettai, and P. hyleaustralis) by possessing a non-pulsed advertisement call. However, the advertisement call of the new species consists of the emission of well-defined call series, whereas the advertisement call of P. giarettai is long (117-187 ms) and with an isolated emission pattern; respecting to P. canga, the new species emits very long notes series (up to 53 notes/advertisement call), compared to the short call series of P. canga (up to 9 notes/advertisement call); considering P. hyleaustralis, the new species has a shorter note duration (15-35 ms), higher note rate per minute (480-1860), and higher dominant frequency (4076-5108).

  17. Espectroscopia multi-objeto e imageamento de Abell 586 com GMOS - o estado dinâmico de um aglomerado de galáxias com arcos gravitacionais

    NASA Astrophysics Data System (ADS)

    Cypriano, E. S.; Sodrã©, L., Jr.; Kneib, J.-P.; Campusano, L.

    2003-08-01

    Nesse trabalho é apresentado um estudo do conteúdo de massa do aglomerado de galáxias A586 (z = 0.171) bem como sua distribuição espacial. Isso foi feito a partir de dados de espectroscopia multi-objeto e imageamento obtidos com o instrumento GMOS acoplado ao telescópio Gemini-Norte. A massa desse aglomerado foi estudada a partir da posição dos seus arcos gravitacionais (lentes fortes), da medida estatística da distorção na forma das galáxias de fundo (lentes fracas) e através da dispersão de velocidades de uma amostra de cerca de 30 galáxias pertencentes ao aglomerado (teorema do virial). Os dois primeiros métodos não dependem do estado dinâmico do aglomerado, enquanto que o terceiro sim. Desse modo, comparando seus resultados pode-se estimar o grau de relaxamento desse sistema. Dados de raios X presentes na literatura também serão incluídos nessa análise. Nossos resultados preliminares a partir das técnicas de lentes fracas, mostram que, supondo que a distribuição de massa desse aglomerado seja a de uma esfera isotérmica, espera-se que ele apresente uma dispersão de velocidades de 1330+/-78 km s-1, em contradicao com medidas similares feitas por Dahle et al. 2002 que encontram valores tão altos quanto 1680 km s-1. Já o estudo dinâmico resultou numa dispersão de velocidades de ~950 km s-1.

  18. Records of environmental changes during the Holocene from Isla de los Estados (54.4°S), southeastern Tierra del Fuego

    NASA Astrophysics Data System (ADS)

    Unkel, Ingmar; Fernandez, Marilen; Björck, Svante; Ljung, Karl; Wohlfarth, Barbara

    2010-12-01

    Southernmost Patagonia, located at the relatively narrow passage between Antarctica and South America, is a highly sensitive region for recording meridional and zonal changes in the pattern of oceanic and atmospheric circulation. The island of Isla de los Estados, situated at 54.5°S, 64°W, east of Argentinean Tierra del Fuego, provides an exceptional possibility, to investigate terrestrial records of atmospheric conditions in an oceanic setting during the last deglaciation and the Holocene. Here we present geochemical and diatom analyses from 10 600 to c. 1500 cal BP of one sequence (LGB) with peat, lake sediments and lagoon deposits at the northern coast of the island, and a lake sediment sequence (CAS) 3 km further inland. The data comprise TC, TN, loss on ignition analyses and continuous XRF scanning as well as age-depth modeling based on AMS- 14C dating on both cores. Diatom analysis of the CAS record complements the geochemical proxies. During the Holocene, our two sites have been impacted by two different forcings: changes in the regional climate regime largely influenced by the varying strength and position of the Southern Hemisphere Westerlies (SHW), while relative sea-level changes affected the deposits of the coastal site. In concert with the onset of the Antarctic thermal optimum, our data suggest fairly warm conditions and the establishment of denser peat and forest vegetation on the island c. 10 600 cal BP. Between 8500 and 4500 cal BP geochemistry and diatoms from the CAS record indicate stronger Westerlies at this latitude, which means higher wind speed or higher storm frequency and more precipitation, resulting in more pronounced surface run-off. After 4500 cal BP, the geochemical proxies and large changes in diatom assemblages indicate a decrease in precipitation, weaker winds and possibly cooler conditions, probably as an effect of weaker SHW and/or a latitudinal shift. The depositional environment of CAS changed from gyttja to peat around 1000

  19. Natural Hazards and Vulnerability in Valle de Chalco Solidaridad Estado de Mexico, Mexico. Case studies: El Triunfo, Avandaro and San Isidro

    NASA Astrophysics Data System (ADS)

    Ponce-Pacheco, A. B.; Novelo-Casanova, D. A.; Espinosa-Campos, O.; Rodriguez, F.; Huerta-Parra, M.; Reyes-Pimentel, T.; Benitez-Olivares, I.

    2010-12-01

    On February 5, 2010, occurred a fracture on a wall of the artificial water channel called “La Compañía (CC)” in the section of the municipality of Valle de Chalco Solidaridad (VCS), Estado de Mexico, Mexico. The dimensions of this fracture were 70m length, 20m wide and 5m height, and cause severe wastewater flooding that affected surrounding communities. This area was also impacted by a similar event in 2000 and 2005. In this study, we assess the social, economic, structural, and physical vulnerability to floods, earthquakes, subsidence, and landslides hazards in the communities of El Triunfo, San Isidro and Avandaro of VCS. This area is located in soil of the old Chalco Lake, and in recent decades has experienced a large population growth. Due to urban development and the overexploitation of aquifers, the zone is also exposed to subsidence up to 40 cm per year. For these reasons, CC is at present, well above ground level. In this research, we applied the methodology developed by the National Oceanic and Atmospheric Administration (NOAA) to assess vulnerability. As a first step, we established the level of exposure of the communities to the four main hazards. We also analyzed the economic and social vulnerability of the area using data collected from a field survey. From the total family houses in the studied communities, we estimated a minimum sample statistically significant and the households from this sample were selected randomly. We defined five levels of vulnerability: very low, low, moderate, high, and very high. Our results indicate that San Isidro is the community with the highest level of structural vulnerability, as for the physical vulnerability it was found that the homes most affected by flooding are those located close to CC but we did not found a direct relationship between the physical vulnerability and structural vulnerability. The main hazard to which the zone of study is exposed is flooding because its period of recurrence is about five

  20. Technology Solutions Case Study: Air-To-Water Heat Pumps with Radiant Delivery in Low Load Homes, Tucson, Arizona and Chico, California

    SciTech Connect

    2013-11-01

    Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

  1. Highlighting Changes in the Classrooms of a Successful One-to-One Program in Rural Argentina: Case Studies of "Todos los Chicos en la Red" in San Luis

    ERIC Educational Resources Information Center

    Light, Daniel; Pierson, Elizabeth

    2012-01-01

    One-to-one computing programs and laptop programs have been a popular approach to education reform in developing countries over the last decade. A motivation behind so many one-to-one laptop programs is the desire to overcome with one powerful resource the historical lack of educational tools and resources available in developing countries.…

  2. An overview of a GIS method for mapping landslides and assessing landslide hazards at Río El Estado watershed, on the SW flank of Pico de Orizaba Volcano, Mexico

    NASA Astrophysics Data System (ADS)

    Legorreta Paulin, G.; Bursik, M. I.; Contreras, T.; Polenz, M.; Ramírez Herrera, M.; Paredes Mejía, L.; Arana Salinas, L.

    2012-12-01

    This poster provides an overview of the on-going research project (Grant SEP-CONACYT no 167495) from the Institute of Geography at the National Autonomous University of Mexico (UNAM) that seeks to conduct a multi-temporal landslide inventory, produce a landslide susceptibility map, and estimate sediment production by using Geographic Information Systems (GIS). The Río El Estado watershed on the southwestern flank of Pico de Orizaba volcano, the highest mountain in Mexico, is selected as a study area. The catchment covers 5.2 km2 with elevations ranging from 2676.79 to 4248.2 m a.s.l. and hillslopes between 0° and 56°. The stream system of Río El Estado catchment erodes Tertiary and Quaternary lavas, pyroclastic flows, and fall deposits. The geologic and geomorphologic factors in combination with high seasonal precipitation, high degree of weathering, and steep slopes predispose the study area to landslides. The methodology encompasses three main stages of analysis to assess landslide hazards: Stage 1 builds a historic landslide inventory. In the study area, an inventory of more than 170 landslides is created from multi-temporal aerial-photo-interpretation and local field surveys to assess landslide distribution. All landslides were digitized into a geographic information system (GIS), and a spatial geo-database of landslides was constructed from standardized GIS datasets. Stage 2 Calculates the susceptibility for the watershed. During this stage, Multiple Logistic Regression and SINMAP) will be evaluated to select the one that provides scientific accuracy, technical accessibility, and applicability. Stage 3 Estimate the potential total material delivered to the main stream drainage channel by all landslides in the catchment. Detailed geometric measurements of individual landslides visited during the field work will be carried out to obtain the landslide area and volume. These measurements revealed an empirical relationship between area and volume that took the

  3. A new species of Pseudopaludicola Miranda-Ribeiro, 1926 (Anura: Leptodactylidae: Leiuperinae) from northwestern state of São Paulo, Brazil.

    PubMed

    Pansonato, André; Mudrek, Jessica Rhaiza; Veiga-Menoncello, Ana Cristina Prado; Rossa-Feres, Denise De Cerqueira; Martins, Itamar Alves; Strüssmann, Christine

    2014-09-15

    A new species of Pseudopaludicola is described from human-altered areas originally covered by Semideciduous Forest in northwestern state of São Paulo, southeastern Brazil. Morphologically, the new species differs from four species belonging to the P. pusilla group by the absence of either T-shaped terminal phalanges or toe tips expanded, and from all other congeners except P. canga and P. facureae by possessing an areolate vocal sac, with dark reticulation. The higher duration (300-700 ms) of each single, pulsed note (9-36 nonconcatenated pulses) that compose the call in the new species distinguishes it from all other 14 species of Pseudopaludicola with calls already described (10-290 ms). Absence of harmonics also differ the advertisement call of the new species from the call of its sister species P. facureae, even though these two species presented unexpected low genetic distances. Although we could not identify any single morphological character distinguishing the new species from P. facureae, a PCA and DFA performed using 12 morphometric variables evidenced significant size differences between these two species. 

  4. Early Detection of Cervical Intraepitelial Neoplasia in a Heterogeneos Group of Colombian Women Using Electrical Impedance Spectroscopy and the Miranda-López Algorithm

    NASA Astrophysics Data System (ADS)

    Miranda, David A.; Corzo, Sandra P.; González-Correa, Carlos-A.

    2012-12-01

    Electrical Impedance Spectroscopy (EIS) allows the study of the electrical properties of materials and structures such as biological tissues. EIS can be used as a diagnostic tool for the identification of pathological conditions such as cervical cancer. We used EIS in combination with genetic algorithms to characterize cervical epithelial squamous tissue in a heterogeneous sample of 56 Colombian women. All volunteers had a cytology taken for Papanicolau test and biopsy taken for histopathological analysis from those with a positive result (9 subjects). ROC analysis of the results suggest a sensitivity and specificity in the order of 0.73 and 0.86, respectively.

  5. Estudio de la fotoabsorción y fotoionización de la molécula de alta relevancia atmosférica no a través de los estados Rydberg con la metodología MQDO

    NASA Astrophysics Data System (ADS)

    Bustos, E.; Velasco, A. M.; Martín, I.; Lavín, C.

    Los procesos de fotoionización son de una importancia fundamental [1] y encuentran aplicación en un gran número de contextos científicos: Astrofísica [2], química de las radiaciones, biología. Los investigadores de dichos campos, necesitan de valores de fiables de secciones eficaces para la fotoionización parcial, la Fotoabsorción, así como para los procesos de fotofragmentación en amplios intervalos espectrales, particularmente en estudios de modelización [3-5]. En este trabajo se ha centrado la atención sobre el oxido nítrico, que se ha considerado apropiado y relevante por varios motivos: por el trascendental papel que representa en la física y química de la alta atmosfera [6], aparte de por estar íntimamente relacionado con los problemas de contaminación. Los procesos de recombinación disociativa [7] del NO, donde los estados Rydberg se encuentran directamente implicados, son relevantes, por ejemplo, en las regiones E y F de la ionosfera [7]. En este trabajo se estudia la fotoionización del NO desde el estado fundamental con la versión molecular del método del orbital de defecto cuántico (MQDO). Para ello se calcula el diferencial de las fuerzas de oscilador parciales que constituyen los canales de fotoionización del NO desde el estado fundamental. La continuidad del diferencial de fuerza de oscilador calculada a través del umbral de fotoionización, esto es, en las regiones del espectro discreta y del continua, se adopta como criterio de calidad la escasez de datos comparativos [8].

  6. Physical, Structural and Operational Vulnerability of Critical Facilities in Valle de Chalco Solidaridad, Estado de Mexico, Mexico. Case of study: Avándaro, San Isidro and El Triunfo

    NASA Astrophysics Data System (ADS)

    Garcia Payne, D. G.; Novelo-Casanova, D. A.; Ponce-Pacheco, A. B.; Espinosa-Campos, O.; Huerta-Parra, M.; Reyes-Pimentel, T.; Rodriguez, F.; Benitez-Olivares, I.

    2010-12-01

    Valle de Chalco Solidaridad is located in Mexico City Metropolitan Area in Estado de Mexico, Mexico. In this town there is a sewage canal called “La Compañía”. A wall of this canal collapsed on February 5, 2010 due to heavy rains creating the flooding of four surrounding communities. It is important to point out that this area is frequently exposed to floods. In this work, we consider a critical facility as an essential structure for performance, health care and welfare within a community or/and as a place that can be used as shelter in case of emergency or disaster. Global vulnerability (the sum of the three measured vulnerabilities) of the 25 critical facilities identified in the locations of Avándaro, San Isidro and El Triunfo was assessed using the Community Vulnerability Assessment Tool developed by the National Oceanic and Atmospheric Administration (NOAA). For each critical facility we determined its operational, structural and physical vulnerabilities. For our analysis, we considered the four main natural hazards to which Valle de Chalco is exposed: earthquakes, floods, landslides and sinking. We considered five levels of vulnerability using a scale from 1 to 5, where values range from very low to very high vulnerability, respectively. A critical facilities database was generated by collecting general information for three categories: schools, government and church. Each facility was evaluated considering its location in relation to identified high-risk areas. Our results indicate that in average, the global vulnerability of all facilities is low, however, there are particular cases in which this global vulnerability is high. The average operational vulnerability of the three communities is moderate. The global structural vulnerability (sum of the structural vulnerability for the four analyzed hazards) is moderate. In particular, the structural vulnerability to earthquakes is low, to landslides is very low, to flooding is moderate and to sinking is

  7. Medicina integrativa en América: De qué forma se está practicando la medicina integrativa en los centros clínicos en los Estados Unidos

    PubMed Central

    Horrigan, Bonnie; Lewis, Sheldon; Abrams, Donald I.; Pechura, Constance

    2012-01-01

    RESUMEN EJECUTIVO El impulso para desarrollar e implementar estrategias de medicina integrativa está enraizado en el deseo de mejorar la atención al paciente. The Bravewell Collaborative, una organización sin ánimo de lucro dedicada a la mejora de la atención sanitaria, define la medicina integrativa como “un enfoque de la medicina que coloca al paciente en el centro y se dirige al conjunto completo de influencias físicas, emocionales, mentales, sociales, espirituales y ambientales que afectan a la salud de la persona. Con una estrategia personalizada que considera las condiciones, necesidades y circunstancias únicas del paciente, utiliza las intervenciones más apropiadas de una variedad de disciplinas científicas para curar la afección y la enfermedad y ayudar a las personas a recobrar y mantener una salud óptima”. En las pasadas dos décadas, se ha documentado un número creciente de centros clínicos que proporcionan medicina integrativa, el número de facultades y escuelas médicas que enseñan estrategias integrativas, el número de investigadores que estudian intervenciones integrativas, y el número de pacientes que solicitan cuidados integrativos. Pero se desconocía si la medicina integrativa se estaba ofreciendo de manera igual, similar, o dispar. Además, mientras que los estudios anteriores se centraban en la prevalencia y el uso de la medicina complementaria o alternativa (MCA) por parte de los pacientes1,2 o de los médicos en hospitales3, enumerando la utilización de terapias MCA individuales, se había recogido muy poca información con respecto a la práctica real de la medicina integrativa que, por definición, trata a la persona en su conjunto. En 2011, The Bravewell Collaborative encargó una encuesta para determinar la forma en que la medicina integrativa se estaba practicando en los Estados Unidos: (1) describiendo las poblaciones de pacientes y las afecciones sanitarias tratadas más habitualmente; (2) definiendo las pr

  8. Sobre el estado evolutivo de β Pictoris

    NASA Astrophysics Data System (ADS)

    Brunini, A.; Benvenuto, O. G.

    Desde el descubrimiento de fuertes excesos infrarrojos en β Pictoris, esta estrella ha sido muy estudiada y es considerada candidata a poseer un sistema planetario propio. β Pic está rodeada de un disco asimétrico de polvo que se observa de canto y que esta vacío a distancias <= 40 AU. Esto se considera una fuerte evidencia en favor de la presencia de (al menos) un planeta gigante. Recientemente se han observado líneas de material circunestelar que se han interpretado como consecuencia de la caída de objetos cometarios sobre esta estrella. Recientemente se ha utilizado la existencia del disco de polvo para atribuir una edad corta (pre - secuencia principal) a βPic. Sin embargo, la evaporación de estos cometas provee suficiente polvo como para explicar la presencia del disco observado sin necesidad de edades cortas. En este trabajo mostramos que la comparación entre la tasa de impactos cometarios estimada en el Sistema Solar para diferentes etapas de su evolución y los datos observados en β Pic indica edades avanzadas para β Pic. Esta estimación debe tomarse con cautela ya que depende de la estructura de los sistemas planetarios. Además mostramos que, desde el punto de vista de la evolución estelar y con las incertezas presentes en la luminosidad y la temperatura efectiva, existe un continuo de edades posible para β Pic. Sin embargo, empleando los datos provenientes de los flujos cometarios encontramos que una edad prolongada es consistente con ambos tratamientos.

  9. The Thrust and Scope of Teacher Centers and the Prospects for Curriculum Improvement.

    ERIC Educational Resources Information Center

    Romero, J. Christian; Heerman, Charles E.

    California State University, Chico (CSU, Chico) has had a teacher center program underway for two years. By coupling the concept of centers with the traditional California requirement of a fifth year of professional training for preservice teachers CSU, Chico has designed, within a 70-mile radius of the campus, 14 teacher training centers, each…

  10. New bioacoustic and distributional data on Bokermannohyla sapiranga Brandão et al., 2012 (Anura: Hylidae): revisiting its diagnosis in comparison with B. pseudopseudis (Miranda-Ribeiro, 1937).

    PubMed

    De Carvalho, Thiago Ribeiro; Giaretta, Ariovaldo Antonio; Teixeira, Bernardo Franco Da Veiga; Martins, Lucas Borges

    2013-12-11

    In this paper, we provide new bioacoustic and distributional data on Bokermannohyla sapiranga, as well as additional comparative bioacoustic data on topotypes of B. pseudopseudis, and re-evaluate the differential diagnosis of the former species with respect to the latter. Head shapes (dorsal and lateral views) presented such variation that should not be used to differentially diagnose them as originally proposed. On the other hand, the presence of a dermal ridge along outer tarsi, and color patterns of the eyes and dorsal surface of hand/toe disks still represent diagnostic characters between both species. We also found differences in temporal (call duration; notes per call), spectral (dominant frequency; harmonics), and structural (pulsed/non-pulsed note structure) traits of their calls. Distribution of B. sapiranga is extended eastward (Paracatu), which corresponds to the first record for the State of Minas Gerais, whereas B. pseudopseudis distribution seems to be restricted to rocky montane field environments of northern Goiás State.

  11. Evaluations of the Antimicrobial Activities and Chemical Compositions of Body Fat from the Amphibians Leptodactylus macrosternum Miranda-Ribeiro (1926) and Leptodactylus vastus Adolf Lutz (1930) in Northeastern Brazil

    PubMed Central

    Cabral, Mario Eduardo Santos; Dias, Diógenes de Queiroz; Sales, Débora Lima; Oliveira, Olga Paiva; Teles, Diego Alves; Filho, João Antonio de Araujo; de Sousa, José Guilherme Gonçalves; Coutinho, Henrique Douglas Melo; da Costa, José Galberto Martins; Kerntopf, Marta Regina; Alves, Rômulo Romeu da Nóbrega; Almeida, Waltécio de Oliveira

    2013-01-01

    Leptodactylus macrosternum and L. vastus (family: Leptodactylidae) are commonly encountered in the “Caatinga” biome in northern Brazil. The body fat of L. vastus is used as a zootherapeutic for treating a number of human maladies. The aim of this work was to determine the chemical composition of the body fats of L. macrosternum and L. vastus and to evaluate their antimicrobial activities as well as the ecological implications of their use in traditional folk medicine. Oils were extracted from body fat located in the ventral region of L. macrosternum (OLM) and L. vastus (OLV) using hexane as a solvent. The fatty acids were identified by GC-MS. The antimicrobial activities of the oils, either alone or in combination with antibiotics and antifungal drugs, were tested on standard strains of microorganisms as well as on multiresistant strains of Escherichia coli and Staphylococcus. OLM contained 40% saturated and 60% unsaturated fatty acids, while OLV contained 58.33% saturated and 41.67% unsaturated fatty acids. Our results indicated that both OLM and OLV demonstrated relevant antimicrobial activities (with MIC 256 μg/mL for both) against Pseudomonas aeruginosa and Candida krusei. However, no antimicrobial effects were observed when these oils were combined with antibiotics or antifungal drugs. PMID:23710241

  12. Observatorio Pierre Auger: motivación y estado actual

    NASA Astrophysics Data System (ADS)

    Rovero, A. C.; Etchegoyen, A.; García, B.

    The Pierre Auger Observatory is aiming to understand the origin, nature and acceleration mechanisms of the most energetic cosmic rays (E>10 E18 eV). It will consist of one hybrid detector in each hemisphere, giving a total acceptance of 14200 km2 sr. The southern observatory is being constructed in Malargue, Mendoza, Argentina, and will be finished in 2006. No final statement can be made so far about any feature in the most energetic part of the spectrum. However, good candidate events were observed to have a primary energy of about 10 E20 eV.

  13. [Not Available].

    PubMed

    Flores Navarro-Pérez, Carmen; González-Jiménez, Emilio; Schmidt-RioVilla, Jacqueline; Meneses-Echávez, José Francisco; Correa-Bautista, Jorge Enrique; Correa-Rodríguez, María; Ramírez-Vélez, Robinson

    2016-01-01

    Objetivos: los objetivos de este estudio fueron analizar el nivel nutricional en una población de niños y adolescentes colombianos y determinar la posible relación entre el nivel nutricional y el estado nutricional según el índice de masa corporal (IMC) y la circunferencia de cintura (CC).Material y métodos: estudio transversal en 6.383 niños y adolescentes de entre 9 y 17,9 años de edad, de Bogotá, Colombia. Se aplicó de manera autodiligenciada el cuestionario Krece Plus validado en el estudio enKid como indicador del nivel nutricional con las categorías alto (test ≥ 9), medio (test 6-8) y bajo (test ≤ 5). Se tomaron medidas de peso, talla, CC, y se calculó el IMC como marcadores del estado nutricional.Resultados: de la población general, el 57,9% eran chicas (promedio de edad 12,7 ± 2,3 años). En todas las categorías del IMC, más del 50% de chicos y chicas siguen una dieta de muy baja calidad, que empeora progresivamente con el avance en edad. En ambos sexos, se observaron tendencias entre un nivel nutricional muy bajo con el desarrollo de sobrepeso. Asimismo, la obesidad abdominal por CC se relacionó con una puntuación baja en el Krece Plus en ambos sexos.Conclusiones: en escolares de Bogotá, una dieta de muy baja calidad se relacionó con alteraciones del estado nutricional (IMC y CC), especialmente entre chicas y adolescentes. Estos resultados deben alentar el desarrollo de intervenciones orientadas a mejorar los hábitos nutricionales entre los escolares colombianos. PMID:27571667

  14. [Not Available].

    PubMed

    Flores Navarro-Pérez, Carmen; González-Jiménez, Emilio; Schmidt-RioVilla, Jacqueline; Meneses-Echávez, José Francisco; Correa-Bautista, Jorge Enrique; Correa-Rodríguez, María; Ramírez-Vélez, Robinson

    2016-07-19

    Objetivos: los objetivos de este estudio fueron analizar el nivel nutricional en una población de niños y adolescentes colombianos y determinar la posible relación entre el nivel nutricional y el estado nutricional según el índice de masa corporal (IMC) y la circunferencia de cintura (CC).Material y métodos: estudio transversal en 6.383 niños y adolescentes de entre 9 y 17,9 años de edad, de Bogotá, Colombia. Se aplicó de manera autodiligenciada el cuestionario Krece Plus validado en el estudio enKid como indicador del nivel nutricional con las categorías alto (test ≥ 9), medio (test 6-8) y bajo (test ≤ 5). Se tomaron medidas de peso, talla, CC, y se calculó el IMC como marcadores del estado nutricional.Resultados: de la población general, el 57,9% eran chicas (promedio de edad 12,7 ± 2,3 años). En todas las categorías del IMC, más del 50% de chicos y chicas siguen una dieta de muy baja calidad, que empeora progresivamente con el avance en edad. En ambos sexos, se observaron tendencias entre un nivel nutricional muy bajo con el desarrollo de sobrepeso. Asimismo, la obesidad abdominal por CC se relacionó con una puntuación baja en el Krece Plus en ambos sexos.Conclusiones: en escolares de Bogotá, una dieta de muy baja calidad se relacionó con alteraciones del estado nutricional (IMC y CC), especialmente entre chicas y adolescentes. Estos resultados deben alentar el desarrollo de intervenciones orientadas a mejorar los hábitos nutricionales entre los escolares colombianos.

  15. [VALUES OF WAIST/HIP RATIO AMONG CHILDREN AND ADOLESCENTS FROM BOGOTÁ, COLOMBIA: THE FUPRECOL STUDY].

    PubMed

    Rodríguez-Bautista, Yenni Paola; Correa-Bautista, Jorge Enrique; González-Jiménez, Emilio; Schmidt-RioValle, Jacqueline; Ramírez-Vélez, Robinson

    2015-11-01

    Objetivo: determinar los valores del índice cintura/cadera (ICC) en una población escolar de Bogotá, Colombia, pertenecientes al estudio FUPRECOL. Métodos: estudio descriptivo y transversal, realizado en 3.005 niños y 2.916 adolescentes de entre 9 y 17,9 años de edad, pertenecientes a instituciones educativas oficiales de Bogotá, Colombia. Se tomaron medidas de peso, talla, circunferencia de cintura, circunferencia de cadera y estado de maduración sexual por autorreporte. Se calcularon los percentiles (P3, P10, P25, P50, P75, P90 y P97) según sexo y edad y se realizó una comparación entre los valores del ICC observados y los estándares internacionales. Resultados: de la población general (n = 5.921), el 57,0% eran chicas (promedio de edad 12,7 ± 2,3 años). En todas las edades el ICC fue mayor en los chicos que en las chicas, observándose un descenso en la media de los valores obtenidos desde los 9 hasta los 17,9 años. En los chicos, los valores del ICC mayores del P90 (asociados a riesgo cardiovascular) estuvieron en el rango 0,87 y 0,93 y en las chicas entre 0,85 y 0,89. Al comparar los resultados de este estudio, por grupos de edad y sexo, con trabajos internacionales de niños y adolescentes de Europa, Suramérica, Asia y África, se observa que los valores del ICC fueron menores en este estudio en ambos sexos, con excepción de los escolares originarios de Grecia y Venezuela. Conclusiones: se presentan percentiles del ICC según edad y sexo que podrán ser usados como de referencia en la evaluación del estado nutricional y en la predicción del riesgo cardiovascular desde edades tempranas.

  16. The Formation and Development of the Mindful Campus

    ERIC Educational Resources Information Center

    DuFon, Margaret A.; Christian, Jennifer

    2013-01-01

    This chapter recounts the development of faculty and student groups whose purposes are to promote mindfulness and contemplative pedagogy on the California State University-Chico campus through work both on the campus and in the greater Chico community. The "Mindful Campus" a student organization formed in 2011, merged with the "Faculty Initiative…

  17. Analysis of the life-style and dietary habits of a population of adolescents.

    PubMed

    González-Jiménez, Emilio; Cañadas, Gustavo R; Fernández-Castillo, Rafael; Cañadas-De la Fuente, Guillermo Arturo

    2013-11-01

    Objetivos: En primer lugar verificar una posible mejora del estado nutricional en una población de alumnos tras el desarrollo de una intervención educativa. Comprobar la adopción de hábitos alimentarios y de actividad física saludables por los alumnos, tras el desarrollo de una intervención educativa en salud. Por último, verificar una reducción en el tiempo que los alumnos dedican al ocio sedentario. Muestra y metodología: La población de estudio estaba compuesta por 138 adolescentes de entre 14 y 19 años de edad, 67 chicos (48,6%) y 71 chicas (51,4 %), pertenecientes a dos centros educativos públicos de la ciudad de Almería (España). El estudio se articuló en tres fases. Una primera etapa, que comprendería la segunda quincena del mes de septiembre de 2011. En ella se realizó una valoración del estado nutricional de todos los alumnos mediante antropometría. Una segunda etapa (desde octubre de 2011 hasta la primera quincena de junio de 2012), donde tendría lugar la intervención educativa sobre alimentación saludable y actividad física. Y una última fase (segunda quincena de junio de 2012), donde sería evaluada la eficacia de la intervención desarrollada. Resultados: Tras la intervención, se encontraron diferencias estadísticamente significativa (p.

  18. [C-reactive protein as a biochemical marker of cardiovascular risk].

    PubMed

    González-Jiménez, Emilio; Montero-Alonso, Miguel A; Schmidt-Ríovalle, Jacqueline

    2013-11-01

    Resumen: Objetivos: Los objetivos de este estudio fueron analizar el perfil metabólico de la población de estudio. En segundo lugar, verificar una asociación significativa entre el estado nutricional de los sujetos y los niveles séricos de proteína-C reactiva. Por último, comprobar la existencia de una correlación entre los niveles séricos de proteína-C reactiva y los valores del índice de cintura-cadera. Muestra y metodología: Una población de 1001 adolescentes de entre 9 y 17 años de edad, pertenecientes a 18 centros educativos de las provincias de Granada y Almería. Se evaluó el estado nutricional de los alumnos mediante antropometría. Para el estudio metabólico, se practicó una extracción sanguínea mediante punción venosa a cada alumno, analizando proteína-C reactiva, glucemia basal, ceruloplasmina, hemoglobina glicosilada (HBA1c), insulina basal, niveles séricos de lipoproteína (a) y ácidos grasos de cadena larga (NEFA). Resultados: El estudio bioquímico evidenció un perfil metabólico normal, destacando niveles séricos de proteína-C reactiva, glucemia basal, ceruloplasmina, hemoglobina glicosilada, insulina basal, lipoproteína (a) y ácidos grasos libres ligeramente superiores en chicos. Se encontró una asociación estadísticamente significativa (p.

  19. [Analysis of food intake and dietary habits in a population of adolescents in the city of Granada (Spain)].

    PubMed

    González-Jiménez, Emilio; Schmidt-Río-Valle, Jacqueline; García-López, Pedro A; García-García, Carmen J

    2013-01-01

    Objetivos: Los objetivos de este estudio fueron realizar un análisis de la ingesta de macronutrientes y micronutrientes en una población de adolescentes. En segundo lugar, verificar una correlación significativa entre el hábito de desayunar a diario en casa y el estado nutricional de dicha población. Muestra y metodología: La población de estudio estaba compuesta por 100 adolescentes de entre 12 y 15 años de edad, pertenecientes a 2 centros educativos públicos de la ciudad de Granada. Estudio descriptivo, transversal y multicéntrico en el que se llevó a cabo una valoración completa del estado nutricional de los alumnos mediante antropometría. Para el análisis de la ingesta alimentaria y hábitos nutricionales se utilizó un registro alimentario de 72 horas, específicamente elaborado y validado por el equipo investigador. Resultados: La ingesta energética fue superior en ambos sexos a la recomendada por la RDA. Se encontró una ingesta proteica media en chicas del 16% respecto del valor calórico total (VCT) y de un 15% del VCT en varones. Se evidenció un consumo medio de grasas de (106,1 gramos) en chicos, frente a los 100,4 gramos en chicas. Éstas ingerían más carbohidratos, destacando una ingesta media de 279,4 gramos/día frente a los 251 gramos/día ingeridos en varones. La ingesta de minerales fue variable en ambos sexos, siendo inferior a las recomendaciones de la RDA en chicas. En los varones resaltó una ingesta de calcio y zinc por encima de dichas recomendaciones. El aporte vitamínico fue variado y equilibrado en ambos sexos, cubriendo los requerimientos para edad y sexo. Respecto de la variable desayuno, se encontró una relación significativa (p < 0,0001) entre el hábito de desayunar en casa, antes de ir al instituto y el estado nutricional de los alumnos. Conclusiones: Un óptimo estado nutricional y de salud implica necesariamente mantener una alimentación equilibrada en sus nutrientes y unos hábitos nutricionales saludables.

  20. Prevalence of underweight, overweight, general and central obesity among 8-15-years old Bulgarian children and adolescents (Smolyan region, 2012-2014).

    PubMed

    Mladenova, Silviya; Andreenko, Emiliya

    2015-06-01

    Objetivo: el objetivo de este trabajo es investigar la distribucion de peso insuficiente, demasiado pesado, la obesidad general y central en 8 ninos bulgaros de 15 anos y adolescentes, a traves del uso de los indices antropometricos BMI y WHtR. Materiales y métodos: el objeto de este estudio son 878 ninos y adolescentes (437 ninos y 441 ninas) de la region de Smolyan, Bulgaria, con edades de 8 a 15 anos. El estudio es transversal y se llevo a cabo en el periodo 2012- 2014. Se miden la altura, el peso y la circunferencia de la cintura, asi como el indice de masa corporal. El sobrepeso y la obesidad se definen de acuerdo con los puntos de corte de BMI, recomendado por la IOTF y desarrollado por Cole et al. (2000:2007). La obesidad central fue definida de acuerdo con los valores discriminatorios de 0,500 de WHtR. Los datos obtenidos fueron analizados por los paquetes de software estadistico STATISTICA 10.0 y SPSS 16. Resultados: el sobrepeso se produce entre el 18,8% de los chicos y el 17,0% de las ninas, y la obesidad entre el 7,6% de los varones y el 3,7% de las chicas. Presentan bajo peso el 8,0% de los chicos y el 10,4% de las chicas. La obesidad central (RCEst ≥ 0.500) se produce en promedio, en el 12,75% de todos los ninos investigados, independientemente de su estado nutricional (16,2% de los varones y el 9,3% de las chicas). Presentan obesidad central (RCEst ≥ 0.500), en promedio, el 2,7% de todos los ninos y ninas con peso normal (n = 96) y un promedio 46,82% de todos los participantes con sobrepeso y con obesidad (n = 205). Con el aumento de riesgo para la salud (RCEst ≥ 0.500) son total de 2,01% (n = 16) de todos los ninos encuestados (n = 793) de las categorias de peso normal. Conclusión: se ha producido un aumento de la prevalencia de sobrepeso y obesidad en ninos y adolescentes bulgaros de la region de Smolyan durante mas de una decada. El porcentaje de insuficiencia ponderal entre los ninos, es relativamente alto especialmente entre el grupo de

  1. El Estado de la Educacion para los Hispanos en los Estados Unidos (The Condition of Education for Hispanics in the United States).

    ERIC Educational Resources Information Center

    Brown, George H.; And Others

    Organized into 4 chapters, the report provides tabular data portraying the educational condition for about 12 million Hispanic Americans in the United States, and shows how Hispanics compare with the majority population on various measures of educational participation and achievement. Providing an overview of Hispanic Americans in the U.S.,…

  2. Diabetes Research Institute Foundation

    MedlinePlus

    ... Hope George Lopez DRI Invention Parents Empower Parents Stern Chairman Exenatide Avandia Distinguished Professor Drug Discovery Initiative ... Ph.D. Shari Messinger Cayetano, ME, Ph.D. Daniel H. Mintz, M.D. Bresta Miranda-Palma, M. ...

  3. 76 FR 15046 - Office of Hazardous Materials Safety; Notice of Applications for Modification of Special Permit

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-18

    ... missile gas storage system. 11911-M Transfer Flow, Inc., 49 CFR 178.700 thru To modify the special Chico, CA. 178.819. permit to authorize new part numbers; to add several new refueling systems; to add...

  4. Dynamics of satellites, asteroids, and rings

    NASA Technical Reports Server (NTRS)

    Dermott, Stanley F.

    1987-01-01

    Work is reported on: (1) the shapes and the internal structures of satellites; (2) the tidal heating of Miranda; (3) the dynamics of arc-like rings; and (4) the structure of the zodiacal cloud that was revealed by the Infrared Astronomy Satellite. Significant progress was made in determining the shape and internal structure of Mimas and in understanding the dynamical evolution of Miranda's orbit.

  5. Resistance to Spodoptera frugiperda (Lepidoptera: Noctuidae) and Euxesta stigmatias (Diptera: Ulidiidae) in sweet corn derived from exogenous and endogenous genetic systems.

    PubMed

    Nuessly, G S; Scully, B T; Hentz, M G; Beiriger, R; Snook, M E; Widstrom, N W

    2007-12-01

    Field trials using Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) and Euxesta stigmatias Loew (Diptera: Ulidiidae) were conducted to evaluate resistance and potential damage interactions between these two primary corn, Zea mays L., pests against Lepidoptera-resistant corn varieties derived from both endogenous and exogenous sources. The endogenous source of resistance was maysin, a C-glycosyl flavone produced in high concentrations in varieties 'Zapalote Chico 2451' and 'Zapalote Chico sh2'. The exogenous resistance source was the Bacillus thuringiensis (Bt)11 gene that expresses Cry1A(b) insecticidal protein found in 'Attribute GSS-0966'. Damage by the two pests was compared among these resistant varieties and the susceptible 'Primetime'. Single-species tests determined that the Zapalote Chico varieties and GSS-0966 effectively reduced S. frugiperda larval damage compared with Primetime. E. stigmatias larval damage was less in the Zapalote Chico varieties than the other varieties in single-species tests. E. stigmatias damage was greater on S. frugiperda-infested versus S. frugiperda-excluded ears. Ears with S. frugiperda damage to husk, silk and kernels had greater E. stigmatias damage than ears with less S. frugiperda damage. Reversed phase high-performance liquid chromatography analysis of nonpollinated corn silk collected from field plots determined that isoorientin, maysin, and apimaysin plus 3'-methoxymaysin concentrations followed the order Zapalote Chico sh2 > Zapalote Chico 2451 > Attribute GSS-0966 = Primetime. Chlorogenic acid concentrations were greatest in Zapalote Chico 2451. The two high maysin Zapalote Chico varieties did as well against fall armyworm as the Bt-enhanced GSS-0966, and they outperformed GSS-0966 against E. stigmatias. PMID:18232407

  6. Otomi de San Andres Cuexcontitlan, Estado de Mexico (Otomi of San Andres Cuexcontitlan, State of Mexico).

    ERIC Educational Resources Information Center

    Lastra, Yolanda

    This document is one of 17 volumes on indigenous Mexican languages and is the result of a project undertaken by the Archivo de Lenguas Indigenas de Mexico. This volume contains information on Otomi, an indigenous language of Mexico spoken in San Andres Cuexcontitlan, in the state of Mexico. The objective of collecting such a representative…

  7. Comunicado de prensa del Informe Anual sobre el Estado del Cáncer 2015

    Cancer.gov

    Por primera vez, los investigadores han usado datos a nivel nacional para determinar la incidencia de los cuatro subtipos moleculares principales de cáncer de seno (mama) por edad, raza y grupo étnico, nivel de pobreza y varios otros factores. El informe

  8. One Language for the United States? (Un Idioma para Los Estados Unidos?) CSG Backgrounder.

    ERIC Educational Resources Information Center

    Ford, Mark L.

    The United States has become increasingly multilingual in recent decades, and while English is the most commonly spoken language, almost 11 percent of Americans prefer to speak another language at home. Bilingualism is promoted by governmental units at the federal, state, and local levels through a variety of programs, particularly in education…

  9. Búsqueda de sitio en el Noroeste Argentino: estado de avance al 2004

    NASA Astrophysics Data System (ADS)

    Recabarren, P.; Muriel, H.; Vrech, R.; García Lambas, D.; Sarazin, M.; Giovanelli, R.

    We report the activities corresponding to the site testing project that the IATE group in collaboration with ESO and IAR have developed during the last year. We report the installation of a weather station at 4600 meters over the sea level in the Macon mountain range near the small town of Tolar Grande. We discuss the adopted criteria for the election of this site as well as the future plans.

  10. Múltiples estados de desorden en el etanol sólido

    NASA Astrophysics Data System (ADS)

    Fernández-Perea, R.

    El diagrama de fases del etanol por debajo de los 169 K será presentado. Se mostrará que el etanol puede solidificarse en tres fases con diversos niveles de desorden,(como un vidrio(G), como un vidrio orientacional (OG) y como un cristal de fase rotora (RP)) además de en una fase totalmente cristalina. Las estructuras de estas tres fases serán presentadas tal y como se deducen a partir de diversas medidas de difracción de neutrones al igual que las proporciones de los isómeros de dicho material en las fases desordenadas y se compararán con los resultados de la fase cristalina y del líquido superenfriado. Igualmente diversas medidas sobre su dinámica serán presentadas, tanto de dispersión de neutrones, como de capacidad calorífica y de medidas dieléctricas y comparadas con modelos teóricos y simulaciones para tratar de explicar los procesos de relajación observados y las transiciones entre las diversas fases.

  11. La Lengua Espanol en los Estados Unidos (The Spanish Language in the United States).

    ERIC Educational Resources Information Center

    Barnach-Calbo, Ernesto

    This report on the use of the Spanish language in the United States discusses the Spanish-speaking population, the language itself, and bilingual education in the United States. The background about the Spanish-speaking population includes the following topics: (1) "A Nations of Immigrants," (2) "The Population of the Spanish-Speaking Minority,"…

  12. Nebraska State Report Card, 1999-2000 = Tarjeta informativa del Estado de Nebraska, 1999-2000.

    ERIC Educational Resources Information Center

    Nebraska State Dept. of Education, Lincoln.

    This report, printed in English and Spanish versions, is the first Nebraska State Report Card. It provides a snapshot of Nebraska schools using statewide averages. Nebraska students scored better than students nationwide in reading, with 60% of Nebraska students in grades 3-4, 7-8, and 10-12 scoring above the median on a standardized reading test.…

  13. La Hispanidad en los Estados Unidos (Spanish Influence in the United States)

    ERIC Educational Resources Information Center

    Da Silva, Zenia Sacks

    1975-01-01

    This paper recounts a brief history of Spanish exploration in the territory of the United States and surveys Spanish influence in industry, agriculture, foods, architecture and vocabulary. (Text is in Spanish.) (CK)

  14. Estado evolutivo de estrellas con fenómeno B[e

    NASA Astrophysics Data System (ADS)

    Aidelman, Y. J.; Cidale, L.; Borges Fernandes, M.; Kraus, M.

    The B[e] phenomenon is related to certain peculiar features observed in the spectrum of some B stars, which are mainly linked to the physical conditions of their circumstellar medium. As these stars are embedded in dense and optically thick circumstellar media, the determination of the spectral type and luminosity class of the central objects is quite difficult. As a consequence, their evolutionary stage and distances present huge uncertainties. In this work we study 4 B[e] stars and discuss their stellar fundamental parameters and evolutionary stages using the BCD spectrophotometric system. FULL TEXT IN SPANISH

  15. Cuentos Hispanos de los Estados Unidos (Hispanic Stories of the United States).

    ERIC Educational Resources Information Center

    Olivares, Julian, Ed.

    This anthology of 21 short stories is intended for Spanish-speaking students of Spanish, other students in intermediate and advanced Spanish-language courses, and students commencing study of the Hispanic literature of the United States. Twelve of the 15 authors are, by birth or descent, of Mexican, Cuban, or Puerto Rican origin. Eight were born…

  16. Cirugía de los trastornos del comportamiento: el estado del arte

    PubMed Central

    Yampolsky, Claudio; Bendersky, Damián

    2014-01-01

    Introducción: La cirugía de los trastornos del comportamiento (CTC) se está convirtiendo en un tratamiento más común desde el desarrollo de la neuromodulación. Métodos: Este artículo es una revisión no sistemática de la historia, indicaciones actuales, técnicas y blancos quirúrgicos de la CTC. Dividimos su historia en 3 eras: la primera comienza en los inicios de la psicocirugía y termina con el desarrollo de las tícnicas estereotácticas, cuando comienza la segunda era. Ésta se caracteriza por la realización de lesiones estereotácticas. Nos encontramos transitando la tercera era, que comienza cuando la estimulación cerebral profunda (ECP) comienza a ser usada en CTC. Resultados: A pesar de los errores graves cometidos en el pasado, hoy en día, la CTC está renaciendo. Los trastornos psiquiátricos que se más frecuentemente se tratan con cirugía son: depresión refractaria, trastorno obsesivo-compulsivo y síndrome de Tourette. Además, algunos pacientes con agresividad fueron tratados quirúrgicamente. Hay varios blancos estereotácticos descriptos para estos trastornos. La estimulación vagal puede ser usada también para depresión. Conclusión: Los resultados de la ECP en estos trastornos parecen alentadores. Sin embargo, se necesitan más estudios randomizados para establecer la efectividad de la CTC. Debe tenerse en cuenta que una apropiada selección de pacientes nos ayudará a realizar un procedimiento más seguro así como también a lograr mejores resultados quirúrgicos, conduciendo a la CTC a ser más aceptada por psiquiatras, pacientes y sus familias. Se necesita mayor investigación en varios temas como: fisiopatología de los trastornos del comportamiento, indicaciones de CTC y nuevos blancos quirúrgicos. PMID:25165612

  17. Sistemas binarios viuda negra: conectando sus orígenes con su estado final

    NASA Astrophysics Data System (ADS)

    Benvenuto, O. G.; De Vito, M. A.; Horvath, J. E.

    ``Black widow'' systems are located in a well determined region of the plane (where is the mass of the pulsar companion and is the orbital period of the system). An attempt has been made to understand which are the mechanisms that lead to companions of ``black widows'' to be located in this region; since standard binary evolution does not provide a satisfactory response. From our evolutionary calculations; we study the path performed in the plane by a binary system to reach the state of ``black widow''. We also discuss whether there is a connection between ``redbacks'' and ``black widows''. FULL TEXT IN SPANISH

  18. Estado y rendimiento del espectrógrafo infrarrojo criogénico F2

    NASA Astrophysics Data System (ADS)

    Diaz, R. J.; Gomez, P.; Schirmer, M.; Navarrete, F.; Stephens, A.; Bosch, G.; Gaspar, G.; Camperi, J.; Gunthardt, G.

    First results related to the commissioning phase of Flamingos-2 spectrograph are reported. The available operation modes for observation and expected performance for 2014 are also presented. After the replacement of the first collimator lens; broken in 2012; a problem persisted in the optical alignment. The troubleshooting will require a new instrument refurbishing schedule; meanwhile; the available operation modes are limited to direct image and longslit spectroscopy. We found that the direct image () achieves its highest quality (0.4'') only in the inner 3' of the field and resolution drops toward the spectrum ends. The longslit mode provides for the / ranges; and for the R3k grism in the ranges ; or . We also determine the uncertainties for emission line kinematics; and study the relative flexion between the guiding system; the slit and the detector. FULL TEXT IN SPANISH

  19. Su Nueva Vida en los Estados Unidos. (Your New Life in the United States).

    ERIC Educational Resources Information Center

    Escobar, Vivian; And Others

    An illustrated guide to aspects of life in the United States is presented in Spanish for recent Hispanic arrivals. The guidelines address such topics as resettlement agencies, community relations and national customs, the U.S. government, local and long distance transport, mail and telephone communication systems, employment practices, the…

  20. Guide for Migrants in the State of Illinois = Guia para Migrantes en el Estado de Illinois.

    ERIC Educational Resources Information Center

    Langemach, Sharon; Koepplinger, Jessica

    Prepared for migrant farmworkers traveling in the State of Illinois, the booklet, written in English and Spanish, provides basic information on (1) employment conditions--requirements of crew leaders and employers, deductions from wages, and laws regulating child labor; (2) housing--conditions of the camp grounds and of living units; (3)…

  1. ASSESSMENT OF SOMATIC MATURATION OF VENEZUELAN ADOLESCENTS.

    PubMed

    Méndez Pérez, Betty; Marrodán Serrano, María Dolores; Prado Martínez, Consuelo; Aréchiga Viramontes, Julieta; Cabañas Armesillas, María Dolores

    2015-11-01

    Introducción: la adolescencia es un período de cambios en la composición corporal, los cuales deben ser considerados en la evaluación del estado de maduración somática. Objetivos: desarrollar un método no invasivo para evaluar el estado de maduración en una muestra transversal de adolescentes venezolanos, a partir del punto de máxima velocidad de crecimiento (PHV), mediante medidas antropométricas. Métodos: la muestra comprende 681 adolescentes venezolanos entre 9 y 18 años. Se aplicó la ecuación de Mirwald para estimar el PHV. De igual manera se efectuó un análisis de regresión para construir el modelo de la muestra venezolana y se aplicaron curvas ROC para evaluar la sensibilidad y especificidad de las variables antropométricas. Resultados: las ecuaciones predictivas para uno y otro sexo mostraron un elevado coeficiente de determinación (< 0,99) y un mínimo error de estimación (0,06). La edad media decimal a la que se alcanza el punto de PHV obtenido por ambas ecuaciones: criterio y modelo, fueron similares para chicos (13,27 vs. 13,39) y para chicas (11,62 vs. 11,77). El test de Bland-Altman mostró una elevada concordancia entre ambas ecuaciones y todos los indicadores antropométricos mostraron un área bajo la curva > 0,75, en especial la talla sentado. Discusion y conclusiones: dada la dificultad de realizar estudios longitudinales, se han utilizado muestras transversales para estimar la maduración somática en diferentes poblaciones. El presente trabajo proporciona ecuaciones predictivas para este propósito, ajustadas a la población venezolana y desarrolladas a partir de la fórmula de Mirwald. Las mismas pueden ser usadas como ayuda en la evaluación nutricional y de salud en general, así como en la disminución de los riesgos asociados con la clasificación errónea de la edad cronológica.

  2. Neutron-capture Cl-36, Ca-41, Ar-36, and Sm-150 in large chondrites: Evidence for high fluences of thermalized neutrons

    NASA Technical Reports Server (NTRS)

    Bogard, D. D.; Nyquist, L. E.; Bansal, B. M.; Garrison, D. H.; Wiesmann, H.; Herzog, G. F.; Albrecht, A. A.; Vogt, S.; Klein, J.

    1995-01-01

    We have measured significant concentrations of Cl-36, Ca-41, Ar-36 from decay of Cl-36, and Sm-150 produced from the capture of thermalized neutrons in the large Chico L6 chondrite. Activities of Cl-36 and Ca-41, corrected for a high-energy spallogenic component and a terrestrial age of approximately 50 ka, give average neutron-capture production rates of 208 atoms/min/g-Cl and 1525 atoms/min/kg-Ca, which correspond to thermal neutron (n) fluxes of 6.2 n/sq cm/s and 4.3 n/sq cm/s, respectively. If sustained for the approximately 65 Ma single-stage, cosmic ray exposure age of Chico, these values correspond to thermal neutron fluences of approximately 1.3 x 10(exp 16) and 0.8 x 10(exp 16) n/sq cm for Cl-36 and Ca-41, respectively. Stepwise temperature extraction of Ar in Chico impact melt shows Ar-36/Ar-38 ratios as large as approximately 9. The correlation of high Ar-36/Ar-38 with high Cl/Ca phases in neutron-irradiated Chico indicates that the excess Ar-36 above that expected from spallation is due to decay of neutron-produced Cl-36. Excess Ar-36 in Chico requires a thermal neutron fluence of 0.9-1.7 x 10(exp 16) n/sq cm. Decreases in Sm-149/Sm-152 due to neutron-capture by Sm-149 correlate with increases in Sm-150/Sm-152 for three samples of Chico, and one of the Torino H-chondrite. The 0.08% decrease in Sm-149 shown by Chico corresponds to a neutron fluence of 1.23 x 10(exp 16) n/sq cm. This fluence derived from Sm considers capture of epithermal neutrons and effects of chemical composition on the neutron energy distribution. Excess Ar-36 identified in the Arapahoe, Bruderheim, and Torino chondrites and the Shallowater aubrite suggest exposure to neutron fluences of approximately 0.2-0.2 x 10(exp 16) n/sq cm. Depletion of Sm-149 in Torino and the LEW86010 angrite suggest neutron fluences of 0.8 x 10(exp 16) n/sq cm and 0.25 x 10(exp 16) n/sq cm, respectively. Neutron fluences of approximately 10(exp 16) n/sq cm in Chico are almost as large as those previously

  3. Blood glucose responses of diabetes mellitus type II patients to some local fruits.

    PubMed

    Guevarra, M T; Panlasigui, L N

    2000-12-01

    To determine the glucose responses of diabetes mellitus type II subjects to fruits, four locally available fruits (containing 25 g of available carbohydrates per serving portion) of chico, mango, pineapple, and papaya were tested among ten type II diabetic subjects, using wheat bread as the control. Results of the in vivo test indicated that chico and mango had significantly lower (P ≤ 0.05) blood glucose areas compared to wheat bread. Chico and mango also had a much lower glycemic index (GI), 57 and 59, respectively, compared to pineapple, 73 and papaya, 86. Differences in glucose responses to fruits and their varying GI are attributed to the amount of fiber, type and amount of sugars found, presence of antinutrients, acidity and physical characteristics of the fruits when chewed. The high fiber content of chico (7.9%), its fructose content (5.3%), its grainy texture when chewed and the presence of antinutrients (saponin, sapotin and achrasaponin) may contribute to its slow digestion and absorption. The low GI and blood glucose response of mango may be because of its fructose content (3.0%), acidity content (malic, citric and tartaric) and its phytic acid content (0.03%). Furthermore, starch, which is a possible factor contributing to low GI, is present in chico (0.8%) and mango (0.3%). Pineapple and papaya, the test fruits that elicited higher blood glucose responses and GI, have much lower fiber contents, less acids and contain glucose and sucrose sugars.

  4. Evaluation of mercury pollution in cultivated and wild plants from two small communities of the Tapajós gold mining reserve, Pará State, Brazil.

    PubMed

    Egler, Silvia G; Rodrigues-Filho, Saulo; Villas-Bôas, Roberto C; Beinhoff, Christian

    2006-09-01

    This study examines the total Hg contamination in soil and sediments, and the correlation between the total Hg concentration in soil and vegetables in two small scale gold mining areas, São Chico and Creporizinho, in the State of Para, Brazilian Amazon. Total Hg values for soil samples for both study areas are higher than region background values (ca. 0.15 mg/kg). At São Chico, mean values in soils samples are higher than at Creporizinho, but without significant differences at alpha<0.05 level. São Chico's aboveground produce samples possess significantly higher values for total Hg levels than samples from Creporizinho. Creporizinho's soil-root produce regression model were significant, and the slope negative. Creporizinho's soil-aboveground and root wild plants regression models were also significant, and the slopes positives. Although, aboveground:root ratios were >1 in all of São Chico's produce samples, soil-plant parts regression were not significant, and Hg uptake probably occurs through stomata by atmospheric mercury deposition. Wild plants aboveground:root ratios were <1 at both study areas, and soil-plant parts regressions were significant in samples of Creporizinho, suggesting that they function as an excluder. The average total contents of Hg in edible parts of produces were close to FAO/WHO/JECFA PTWI values in São Chico area, and much lower in Creporizinho. However, Hg inorganic small gastrointestinal absorption reduces its adverse health effects.

  5. Orbital evolution of the main Uranian satellites

    NASA Astrophysics Data System (ADS)

    Verheylewegen, E.; Noyelles, B.

    2011-10-01

    Since Voyager 2 space mission, we know some properties of the main Uranian satellites (Miranda, Ariel, Umbriel, Titania, Oberon): on the one hand, we observe an important resurfacing of both Miranda and Ariel, and on the other hand some strangenesses in the orbital elements such as the anomalously high inclinaison of Miranda or the anomalously high eccentricity of Ariel. The aim of this study is to use some modern methods including advances in computing resources to revise some studies developed in the last 20 years (see for instance [1], [2], [3], [4]). We therefore consider a model of a n-body problem which takes into account of the mutual perturbations of the five main satellites and of the planet Uranus and meet/improve some previous results.

  6. Coupled orbital-thermal evolution of the main Uranian satellites

    NASA Astrophysics Data System (ADS)

    Noyelles, B.; Verheylewegen, E.; Karatekin, O.

    2013-12-01

    Some of the main satellites of Uranus, in particular Miranda and Ariel, present evidence of a past geophysical activity. This activity can be associated with internal heating during its history and several causes for this heating are envisaged, like the tides and impact(s), following radiogenic heating at the early stage of the evolution. Here, we present a coupled thermal-orbital model of the history of the main satellites of Uranus, in which not only the orbit acts on the heating, but the heating acts also on the orbit in affecting tidal dissipation. We focus in particular on the past mean-motion resonance Miranda-Umbriel, responsible for Miranda's current high inclination.

  7. Guia para su incorporacion a los Estados Unidos de America (A Guide to Resettlement in the United States. Spanish).

    ERIC Educational Resources Information Center

    Center for Applied Linguistics, Washington, DC. Refugee Service Center.

    This resettlement guide, entirely in Spanish, describes the initial stage of resettlement and the processes that refugees undergo as new arrivals. Subjects covered in this guide include pre-arrival procedures, admissions criteria, immigrant's statement of understanding, travel costs and U.S. Customs; resettlement procedures, immigrants'…

  8. Women of Spanish Origin in the United States, 1976. La Mujer de Origen Hispano en los Estados Unidos, 1976.

    ERIC Educational Resources Information Center

    Employment Standards Administration (DOL), Washington, DC. Women's Bureau.

    The report presents data on selected social, economic, and demographic characteristics of women of Spanish origin in the United States. Derived from the population reports of the U.S. Census Bureau and the March 1973 Manpower Report of the President, the statistical data pertain to age, residence, marital status, heads of families and households,…

  9. [Psychiatry and mental health in the Institutp de Seguridad Social para los Trabajadores del Estado. Philosophy of its development].

    PubMed

    Dallal y Castillo, E

    1977-01-01

    In 1972, prepaid medical care for government employees provided by their social security institute, ISSSTE, was reorganized. A division of planning and technical standards was established, within which a Department of Psychiatry was included. Psychiatric care was restructured at three levels: psychiatric hospital, psychiatric OPD at clinic and hospital level and a pilot program in community psychiatry. A three-year psychiatric residency program was established, in addition to participation in other postgraduate, in-service training and monographic courses. Systematic research was started, as well as a publications program, working relationship with other institutions and societies were enhanced. A descriptive example is Child Psychiatry. Most frequent diagnoses are reviewed, and development of services is followed in relation to pediatric departments.

  10. [Group psychotherapy. Operative groups at the Instituto del servico de seguridad Social de los Trabajadores del Estado (ISSSTE)].

    PubMed

    Margolis, J

    1977-01-01

    An operational group is defined; how operational groups theory was applied at an ISSSTE clinic is described. It is underlined how operational groups promote change around the corerstone of a "task". The vicissitudes of an operational group with four psychiatrists who worked in community psychiatry at the ISSSTE, are described.

  11. [Family psychotherapy in medical institutions of the Instituto del Servicio de Seguridad Social de los Trabajadores del Estado].

    PubMed

    Serrano, H

    1977-01-01

    The evolution of family therapy in Mexico is briefly reviewed. It is considered that the reach of this method is limited in institutions due to the lack of qualified psychotherapists with the different orientations of this speciality. The illness, as a sign of family imbalance within the humanistic concept, acquires an even if the treatment is given to the marital couple, the adolescent or the child. Family therapy helps in marital disagreements, behavior problems, anorexia, reactive depression, drug addictions, alcoholism and many other problems. The ISSSTE population has a stable location and is more or less homogeneous; in it family therapy is stimulating and possible; even though the institution imposes certain limitations to family therapy, the enthusiasm for this therapeutic method prevails.

  12. [Risk of death 4 years after a 1st cerebral infarction: prospective study in Barquisimeto, Estado Lara, Venezuela].

    PubMed

    Poni, E; Granero, R; Escobar, B

    1995-12-01

    Stroke, the 5th. cause of death in Venezuela, has been associated to cerebral infarction. However, there is little information concerning lethality factors. 33 atherothrombotic subtype stroke patients, 31 (96%) Latino and 2(4%) white, were admitted into a prospective study to analyze the role of 11 mortality risk factors for those patients. A mortality relative risk (RR) > 1.5 or < 1 (protective) was considered clinically important if 1 was excluded from the 95% confidence interval (95%CI). The Mantel-Haenszel Chi-square procedure was use to test statistical significance (p < 0.05). Mortality RR for patients age 65 and over (RR = 2.95) and 4 year mortality RR for male patients (RR = 2.04) were clinically and statistically significant. History of high blood pressure was protective (RR = 0.62) probably due to good medical control. Cumulative mortality was higher than that of comparable studies, even from the first week of follow-up, reaching 67% at the 4th year.

  13. Innovative manure treatments in the USA – state of the art (Tratamientos Innovadores de estiercoles en USA - estado del arte)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Currently, the potential impact of manure on the environment represents one of the world agriculture’s major challenges. Treatment technologies can play an important role in the management of livestock manure by providing a more flexible approach to land application and acreage limitations and by so...

  14. Geoquímica orgánica de los carbones de fila maestra, estado anzoátegui, Venezuela

    NASA Astrophysics Data System (ADS)

    Moreno, O.; Martinezy, M.; Escobar, M.

    1995-04-01

    The vertical and lateral variability of organic geochemical parameters was established for the Seam 4 of the Fila Maestra coal deposit (Quebradon Formation, Oligocene-Early Miocene age) through the study of coals and carbonaceous shales collected in different outcrops of the coal seam. Chemical and physical analysis included moisture and ash contents, maceral groups, vitrinite reflectance, total carbon, bitumen and its fractions, as well as characterization of saturated hydrocarbons by gas chromatography ( n-alkane distributions and {pristane}/{phytane} ratios). A production sample, representative of the Seam 4, was further analyzed for S, Cl, C, H, O and its calorific value determined. The data collected allowed us to classify these samples as high-volatile bituminous coals, types B and C, according to ASTM classification. The results of the analysis showed little vertical or lateral variation in the properties studied. A gradual increase in ash content in the westward direction, together with a thinning of the coal seam, suggest a greater proximity of the basin border in this direction. High values in {pristane}/{phytane} ratio (4-7), predominance of heavy alkanes and high contents in vitrinites clearly indicates that primigenic organic matter was essentially continental in character. However, the bimodal n-alkane distribution, together with a nigh sulfur (2.7%) and chlorine (0.12%) contents suggest a marine-influenced environment. In consequence, it is proposed that these coals were formed in a transitional environment, as salt-marshs in coastal lagoons or in low deltaic plains. These results are in agreement with the stratigraphic analysis of the sedimentary unit.

  15. Situacion del Chicano en las Universidades de Los Estados Unidos (Situation of the Chicano in the United States Universities).

    ERIC Educational Resources Information Center

    Dolz-Blackburn, Ines

    Chicanos attending universities in the United States are, in general, frustrated individuals. With two languages and two cultures, they feel uneasy in both and usually go to the university with an inferiority complex. In spite of these shortcomings, Chicanos are, generally, subjected to the same entrance exams and requirements as the rest of the…

  16. Bienvenido a los Estados Unidos. Una Guia para Refugiados (Welcome to the United States. A Guide for Refugees). First Edition.

    ERIC Educational Resources Information Center

    Economic and Social Research Council, Edinburgh (Scotland). Centre for Educational Sociology.

    This guidebook provides Spanish-speaking refugees being resettled in the United States with general information about what they will encounter and the services they can receive in their first months in the country. This is the Spanish version, and is available in several other languages. The book is distributed to overseas processing agencies,…

  17. Alternancia entre el estado de emisión de Rayos-X y Pulsar en Sistemas Binarios Interactuantes

    NASA Astrophysics Data System (ADS)

    De Vito, M. A.; Benvenuto, O. G.; Horvath, J. E.

    2015-08-01

    Redbacks belong to the family of binary systems in which one of the components is a pulsar. Recent observations show redbacks that have switched their state from pulsar - low mass companion (where the accretion of material over the pulsar has ceased) to low mass X-ray binary system (where emission is produced by the mass accretion on the pulsar), or inversely. The irradiation effect included in our models leads to cyclic mass transfer episodes, which allow close binary systems to switch between one state to other. We apply our results to the case of PSR J1723-2837, and discuss the need to include new ingredients in our code of binary evolution to describe the observed state transitions.

  18. Rutinas para reducción de observaciones polarimétricas: evolución y estado actual

    NASA Astrophysics Data System (ADS)

    Cellone, S. A.

    I briefly review the evolution experimented by the software for reduction of observational data obtained with the CasProf photopolarimeter, ten years after its "first light" at the Jorge Sahade telescope. Our original routines for the calculation of Stokes parameters were complemented with new ones used to improve the quality of our results, and to adapt the software to different needs, in particular, to obtain polarimetric variability curves (applied to blazar studies). FULL TEXT IN SPANISH

  19. Perspectiva Historica de la Educacion Bilingue en los Estados Unidos (A Historical Perspective of Bilingual Education in the United States)

    ERIC Educational Resources Information Center

    Zamora, Juan Clemente

    1978-01-01

    This article defines bilingualism and bilingual education and traces the history of bilingual education in the United States, starting with the Spanish missions in the west. (Text is in Spanish.) (NCR)

  20. Hacia una adaptación cultural para el tratamiento de trastornos alimentarios en latinos en Estados Unidos

    PubMed Central

    Reyes-Rodríguez, Mae Lynn; Bulik, Cynthia M.

    2011-01-01

    Eating disorders affect all ethnic and socioeconomic groups. However, evidence based treatments for eating disorders have been developed and tested exclusively on Caucasian populations. With the purpose to develop a culturally sensitive framework for the eating disorders treatment in Latinos/as, the objectives of this work were: 1) identify and describe some of the relevant cultural elements for eating disorders in the Latino population and, 2) to draft a culturally sensitive intervention model for eating disorders in Latino population in the United States. Providing culturally sensitive treatments for Latinos with psychiatric disorders is essential to reverse public health disparities. PMID:22003472

  1. About mechanisms of tetonic activity of the satellites

    NASA Astrophysics Data System (ADS)

    Barkin, Yu. V.

    2003-04-01

    analytical formulae. Obtained theoretical evaluations of the force and power characteristics are in good agreement with observational date and in particular they explain some from the well known problems of planetology. The following phenomena obtain an explanation: 1. Higher endogenous activity of Io; 2. Europe crack systems; 3. high endogenous activity of Ganimede, Titan, Miranda, Enceladus, Ariel. Well known relations of tectonic activity between satellites: Ariel and Umbriel, Reiha and Diona, Titania and Oberon have been explained in terms of numerical values of force and energy characteristics. Conclusion about high endogenous activity of Titan also presents important interest. The work was accepted and financed by RFBR grant N 02-05-64176 and by grant SAB2000-0235 of Ministry of Education of Spain (Secretaria de Estado de Educacion y Universidades).

  2. Linguistic isolates in Portugal: insights from the mitochondrial DNA pattern.

    PubMed

    Mairal, Quim; Santos, Cristina; Silva, Marina; Marques, Sofia L; Ramos, Amanda; Aluja, Maria Pilar; Amorim, Antonio; Prata, Maria João; Alvarez, Luis

    2013-12-01

    Miranda do Douro, located in the northeastern region of Portugal, has notable characteristics not only from a geographic or naturalistic point of view, but also from a cultural perspective. A remarkable one is the coexistence of two different languages: Portuguese and Mirandese, the second being an Astur-Leonese dialect. The current persistence of the Astur-Leonese dialect in this population falls on the singularity of the region: relative isolation, implying difficulties to communicate with other Portuguese regions, while the same location facilitated the establishment of social and commercial relationships with adjacent Spanish territories, origin of the Astur-Leonese language. The objective of this study was to characterize the population from Miranda through the analysis of maternal lineages in order to evaluate whether its mitochondrial DNA diversity fitted the patterns previously reported for other populations from the Iberian Peninsula. Viewing that, the entire control region of mitochondrial DNA from 121 individuals was examined. Miranda showed a haplogroup composition usual for a Western European population, in the sense that as high as 63.6% of sequences belonged to macro-haplogroup R0. Lineages ascribed to have an African (L2a and L1b) origin, were detected, but reaching an amount commonly found in Portugal. Miranda also presented a few haplogroups typically found in Jewish populations, while rarely observed in other Iberian populations. The finding can be explained by gene flow with crypto-Jew communities that since long are known to be established in the region where Miranda is located. In Miranda, both genetic and nucleotide diversities presented low values (0.9292 ± 0.0180 and 0.01101 ± 0.00614 respectively) when compared to populations from its micro-geographical framework, which constitute a sign of population isolation that certainly provided conditions for the survival of the Astur-Leonese dialect in the region. PMID:24041913

  3. Cricket body size is altered by systemic RNAi against insulin signaling components and epidermal growth factor receptor.

    PubMed

    Dabour, Noha; Bando, Tetsuya; Nakamura, Taro; Miyawaki, Katsuyuki; Mito, Taro; Ohuchi, Hideyo; Noji, Sumihare

    2011-09-01

    A long-standing problem of developmental biology is how body size is determined. In Drosophila melanogaster, the insulin/insulin-like growth factor (I/IGF) and target of rapamycin (TOR) signaling pathways play important roles in this process. However, the detailed mechanisms by which insect body growth is regulated are not known. Therefore, we have attempted to utilize systemic nymphal RNA interference (nyRNAi) to knockdown expression of insulin signaling components including Insulin receptor (InR), Insulin receptor substrate (chico), Phosphatase and tensin homologue (Pten), Target of rapamycin (Tor), RPS6-p70-protein kinase (S6k), Forkhead box O (FoxO) and Epidermal growth factor receptor (Egfr) and observed the effects on body size in the Gryllus bimaculatus cricket. We found that crickets treated with double-stranded RNA (dsRNA) against Gryllus InR, chico, Tor, S6k and Egfr displayed smaller body sizes, while Gryllus FoxO nyRNAi-ed crickets exhibited larger than normal body sizes. Furthermore, RNAi against Gryllus chico and Tor displayed slow growth and RNAi against Gryllus chico displayed longer lifespan than control crickets. Since no significant difference in ability of food uptake was observed between the Gryllus chico(nyRNAi) nymphs and controls, we conclude that the adult cricket body size can be altered by knockdown of expressions of Gryllus InR, chico, Tor, S6k, FoxO and Egfr by systemic RNAi. Our results suggest that the cricket is a promising model to study mechanisms underlying controls of body size and life span with RNAi methods. PMID:21777227

  4. The control networks of the satellites of Uranus

    NASA Astrophysics Data System (ADS)

    Davies, M. E.; Colvin, T. R.; Katayama, F. Y.

    1987-07-01

    Control networks of the five large satellites of Uranus have been established photogrammetrically from pictures taken by the Voyager 2 spacecraft. The control networks cover the illuminated southern hemisphere of each satellite. Coordinates are listed for 103 points on Miranda, 52 points on Ariel, 43 points on Umbriel, 46 points on Titania, and 34 points on Oberon; some points are identified on the U.S. Geological Survey maps of these satellites. Miranda is ellipsoidal in shape with radii of 241, 235, and 232 km. Mean radii are 579 km for Ariel, 586 km for Umbriel, 790 km for Titania, and 762 km for Oberon.

  5. Extensional and compressional instabilities in icy satellite lithospheres

    NASA Astrophysics Data System (ADS)

    Herrick, D. L.; Stevenson, D. J.

    1990-05-01

    The plausibility of invoking a lithospheric instability mechanism to account for the grooved terrains on Ganymede, Encedalus, and Miranda is presently evaluated in light of the combination of a simple mechanical model of planetary lithospheres and asthenospheres with recent experimental data for the brittle and ductile deformation of ice. For Ganymede, high surface gravity and warm temperatures render the achievement of an instability sufficiently great for the observed topographic relief virtually impossible; an instability of sufficient strength, however, may be able to develop on such smaller, colder bodies as Encedalus and Miranda.

  6. A Collection of The Movies

    NASA Technical Reports Server (NTRS)

    1991-01-01

    This video contains computer-generated animation made from still data sets processed by computer to give the illusion of flying around the objects. 'Earth - The Movie' uses cloud data from satellites and geographical data from maps. 'L.A. - The Movie' was taken from Landsat data of the Los Angeles area. This was the first experimental demonstration of the technology. 'Mars - The Movie' was taken from Viking orbiter data. 'Miranda - The Movie' was made from a mosaic of 9 frames taken by Voyager of the Uranium moon, Miranda. The last movie is 'Monterey - The Bay.'

  7. CCD photometry of the Uranian satellites

    NASA Technical Reports Server (NTRS)

    Buratti, Bonnie J.; Gibson, James; Mosher, Joel A.

    1992-01-01

    Broadband V and R CCD observations of the Uranian satellite system have been obtained over the full range of solar phase angles observable from earth. These first visual observations of the phase curves of Miranda, Ariel, and Umbriel show that Ariel and Miranda exhibit the large opposition surges previously seen on the two outer Uranian Satellites. Umbriel, however, lacks an appreciable opposition surge; its surface is either extremely compact or consists of small particles which lack a backscattered component. The tenuous structure of the other satellites is most likely due to the effects of eons of meteoritic gardening.

  8. A Tensor Hyperviscosity Model in Kull

    SciTech Connect

    Ulitsky, M

    2005-06-28

    A tensor artificial hyper-viscosity model has recently been added to the available list of artificial viscosities that one can chose from when running KULL. This model is based on the theoretical work of A. Cook and B. Cabot, and the numerical results of running the model in the high-order spectral/compact finite difference framework of the Eulerian MIRANDA code. The viscosity model is based on filtering a Laplacian or bi-Laplacian of the strain rate magnitude, and it was desired to investigate whether the formalism that worked so well for the MIRANDA research code could be carried over to an unstructured ALE code like KULL.

  9. State of Oklahoma v. Tracy Smith. 1999-2000 Oklahoma High School Mock Trial Program.

    ERIC Educational Resources Information Center

    Stucky, Melanie; Eberle, April; Cale, Stephen

    This mock trial curriculum is intended to help high school students learn about the law and the legal system. The curriculum is divided into the following sections: Statement of the Case, Stipulations, Legal Authorities, Witness Statements/Narrative Report (Prosecution Witnesses; Defense Witnesses), and Exhibits (Statement of Miranda Rights; Front…

  10. Proceedings of the Annual Conference of the Midwest Philosophy of Education Society (Chicago, Illinois, November 9-10, 1979).

    ERIC Educational Resources Information Center

    Smith, Michael C., Ed.; Dupuis, Adrian, Ed.

    Six papers presented by philosophy of education specialists are gathered in this volume. The first, "Implications in Dewey for Feminist Theory in Education" by Wilma R. Miranda, discusses the social thought of John Dewey and argues that domestic virtues are significant as modes of political action. In "Jim Teaches Fang to Sit," James F. Andris…

  11. Student Uses of Technology in Learning: Two Lenses

    ERIC Educational Resources Information Center

    McNeill, Margot; Diao, Ming Ming; Gosper, Maree

    2011-01-01

    Purpose: In their 2007 article, "Miranda in the brave new world: learning in a Web 2.0 millennium", Barnes and Tynan tell the story of an imaginary British student who uses technology seamlessly to stay connected almost 24 x 7 with friends, peers and teachers in a global learning environment. Whether she is representative of the majority of…

  12. Examining the Effects of School-Provided E-Readers on Middle School Students' Reading Ability

    ERIC Educational Resources Information Center

    Brown, H. Quincy

    2016-01-01

    Nationwide, the increasing popularity of e-books is undeniable; sales of e-books increased an astounding 4,456% over a 5-year period. Researchers, Miranda, Johnson, and Rossi-Williams, determined that e-readers have a positive impact on students' desire to read. This study attempted to determine if the use of institution issued e-readers would…

  13. Focus: alien volcanos

    NASA Astrophysics Data System (ADS)

    Carroll, Michael; Lopes, Rosaly

    2007-03-01

    Part 1: Volcanoes on Earth - blowing their top; Part 2: Volcanoes of the inner Solar System - dead or alive: the Moon, Mercury, Mars, Venus; Part 3: Volcanoes of the outer Solar System - fire and ice: Io, Europa, Ganymede and Miranda, Titan, Triton, Enceladus.

  14. Welcome to the Fun House: When Is a Children's Room Not a Children's Room? When It's The Trove

    ERIC Educational Resources Information Center

    Kenney, Brian

    2006-01-01

    In this article, the author talks about The Trove, a children's space--library doesn't quite cut it--located in the White Plains Public Library, New York. Sandra Miranda, the library's director, came up with the idea for The Trove, although it took the work of many--from her staff to the architects to theatrical designers and fabrications--to…

  15. The Supreme Court Speaks.

    ERIC Educational Resources Information Center

    Cunningham, Albert J.; Coplan, Carol

    1987-01-01

    Reviews recent decisions of the U.S. Supreme Court. The decisions involve student rights, the Gramm-Rudman budget law, homosexuals' right to privacy, the regulation of state primary elections, pregnancy and employment policy, Miranda Rights, and the legality of certain police searches. (JDH)

  16. The Youngest Minority: Are They Competent to Waive Their Constitutional Rights?

    ERIC Educational Resources Information Center

    Brewer, Saundra

    Although juveniles are not considered criminals, it has been only in the last decade that they have been accorded the constitutional rights to fairness and due process of law accorded to adults - - basic rights guaranteed by the United States Supreme Court decision in the Miranda case. However, since a large proportion of youthful arrestees are of…

  17. Examining Diversity Research Literature in School Psychology from 2004 to 2010

    ERIC Educational Resources Information Center

    Grunewald, Stephanie; Shriberg, David; Wheeler, Anitra S.; Miranda, Antoinette Halsell; O'Bryon, Elisabeth C.; Rogers, Margaret R.

    2014-01-01

    One indicator of school psychology's capacity to provide culturally responsive practice is the percentage of articles in leading school psychology journals that have a "significant diversity focus." To date, there have been three published empirical studies (Brown, Shriberg, & Wang; Miranda & Gutte; Rogers Wiese) that have…

  18. Civic Engagement in the Community: Undergraduate Clinical Legal Education

    ERIC Educational Resources Information Center

    Allen, Mahalley D.; Parker, Sally A.; DeLorenzo, Teodora C.

    2012-01-01

    The Community Legal Information Center (CLIC) of California State University, Chico, provides a unique civic engagement program designed to serve the legal service needs of Northern California. Founded in 1969, CLIC is now a 12-program, on-campus law clinic staffed by up to 125 undergraduate students each semester and is the most extensive…

  19. Diversity in Northeastern California: Television as a Partial Solution to the Solution.

    ERIC Educational Resources Information Center

    Wright, Leslie J.; Urbanowicz, Charles F.

    This paper gives a brief overview and history of the Instructional Television Fixed Service (ITFS) begun at California State University, Chico (CSUC) in the spring of 1975, and describes the on-going operations of television activities at CSUC, the only five-year institution of higher education in Northeastern California. Currently known as…

  20. Sacred and Profane American History: Does It Exist in Textbooks?

    ERIC Educational Resources Information Center

    Henry, Michael

    2011-01-01

    Tony Waters, a sociologist at California State University, Chico, has raised an interesting issue about the intellectual conflict some of his students experienced when they arrived on campus and enrolled in American history classes. He reported students were perplexed to find there were two kinds of American history--the version they learned in…

  1. Introducing a New Guided Design into the Classroom.

    ERIC Educational Resources Information Center

    Allen, Charles W.

    Based on a workshop presented by Charles Wales, a guided design project was developed for a junior mechanical design class at California State University-Chico. This course involves lectures on the design process and an extension of the basic mechanics of materials concepts, particularly as related to design and prevention of failure. The…

  2. The Town Hall Meeting: Imagining a Self through Public-Sphere Pedagogy

    ERIC Educational Resources Information Center

    Swiencicki, Jill; Fosen, Chris; Burton, Sofie; Gonder, Justin; Wolf, Thia

    2011-01-01

    What lasting impact could a required general education writing course have on students' well-being? The authors examined this question in the context of the California State University- Chico Town Hall Meeting, a campus event sponsored jointly by the Academic Writing Program and the First-Year Experience Program from 2006 to 2009. In the Town…

  3. Bonds Boom.

    ERIC Educational Resources Information Center

    Reynolds, Cathryn

    1989-01-01

    The combined effect of the "Serrano" decision and Proposition 13 left California school districts with aging, overcrowded facilities. Chico schools won a $18.5 million general obligation bond election for facilities construction. With $11 billion needed for new school construction, California will need to tap local sources. A sidebar outlines…

  4. Golden News Nuggets

    ERIC Educational Resources Information Center

    Diverse: Issues in Higher Education, 2007

    2007-01-01

    This article provides snapshots of recent events and programs at colleges and universities in the state of California: (1) A graduate student in kinesiology at California State University, Chico, is talking the talk and walking the walk to promote physical fitness; (2) First-generation Latino students enrolled in nutrition science and health…

  5. Activity Based Learning in a Freshman Global Business Course: Analyses of Preferences and Demographic Differences

    ERIC Educational Resources Information Center

    Levine, Mark F.; Guy, Paul W.

    2007-01-01

    The present study investigates pre-business students' reaction to Activity Based Learning in a lower division core required course entitled Introduction to Global Business in the business curriculum at California State University Chico. The study investigates students' preference for Activity Based Learning in comparison to a more traditional…

  6. "White Privilege": A Shield against Reason

    ERIC Educational Resources Information Center

    Campbell, Douglas G.

    2010-01-01

    In this article, the author takes a stand against the unthinking evocation of so-called white privilege he found on campus and among his students at California State University, Chico, and argues for the reinstatement of true diversity--intellectual diversity. He says people in the academia should be clear in the classroom, on committees, in…

  7. Research, Teaching, and Professional Development at a Comprehensive University

    ERIC Educational Resources Information Center

    Ball, David B.; Wood, Mike; Lindsley, Craig; Mollard, Paul; Buzard, D. J.; Vivian, Randy; Mahoney, Max; Taft, Benjamin R.

    2004-01-01

    The convergent synthesis of borrelidin is an actively pursued research project by undergraduate chemistry students at Chico State and the varied laboratory techniques, chemistry and required spectral analysis give them a rich undergraduate research experience. Each student who has worked on borrelidin has made a positive contribution to the…

  8. The Gift of the Poinsettia = El regalo de la flor de Nochebuena.

    ERIC Educational Resources Information Center

    Mora, Pat; Berg, Charles Ramirez

    This bilingual (English and Spanish) illustrated children's book relates the story of Carlos, a young boy who lives with his aunt Nina and dog Chico in the small Mexican town of San Bernardo. Nina and Carlos are poor, but their house is full of love. Carlos is excited because he is getting ready to attend the first night of "las posadas," a…

  9. 75 FR 59780 - Privacy Act of 1974, as Amended; Computer Matching Program (SSA/Railroad Retirement Board (RRB...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-28

    ... recording on the Supplemental Security Income Record (SSR) of railroad annuity amounts paid to SSI and SVB... Operation (CHICO) Benefit Payment Master. SSA will match the RRB data with data maintained in the SSR... on the SSR. E. Inclusive Dates of the Matching Program The effective date of this matching program...

  10. Freshman General Studies Thematic. 1973-.

    ERIC Educational Resources Information Center

    California State Univ., Chico.

    The Freshman General Studies Thematic Program (GST) at California State University, Chico was established in 1973 to create a general education program for freshmen and to give faculty the opportunity to explore innovative teaching methods. What resulted was a 33-unit, year-long interdisciplinary course for 36 well-motivated, well-prepared…

  11. Prosthesis, Surrogation, and Relation in Arturo Islas's "The Rain God"

    ERIC Educational Resources Information Center

    Cutler, John Alba

    2008-01-01

    This essay seeks to intervene in critical discussions about Arturo Islas's 1984 novel "The Rain God", as well as to suggest the potential for synthesizing discourses heretofore deployed in disparate conversations about disability, sexuality, and ethnicity. I first demonstrate how the novel's queer characters, Miguel Chico and Felix, pose critical…

  12. 78 FR 21603 - Change in Bank Control Notices; Acquisitions of Shares of a Bank or Bank Holding Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-11

    ... Santiago Clariond Reyes and Alejandra Rangel Hinojosa both of Nuevo Leon, Mexico; ETH Trigo Holding, S.A... Mexico City, Mexico; MBI Holding, LP, Mexico City, Mexico and Fernando Gerardo Chico Pardo, Mexico City..., Elias Abadi Cherem, all of Mexico City, Mexico; Tenedora FAMVA, S.A. de C.V., Fernando Manuel del...

  13. University Television in Northeastern California: A Partial Solution for the Future?

    ERIC Educational Resources Information Center

    Urbanowicz, Charles F.

    The Instructional Television Fixed Service (ITFS) closed circuit delivery system, which became operational on the California State University (CSU), Chico campus in 1975, has offered 61 courses (up to 13 per semester) with up to 27 transmission hours per week to campus students and people at six surrounding Regional Learning Centers (RLC). CSU,…

  14. Modelo Crosscultural de Pasantias para Lideres de la Educacion: Cooperacion entre Estados Unidos y Venezuela (Designing an Effective School Administrator Internship Program: United States and Venezuela Cooperation).

    ERIC Educational Resources Information Center

    Serafin, Ana Gil; Thompson, Eugene W.

    A model was developed of an internship program designed to give valuable cross-cultural experience to school administrators in training at universities in the United States and Venezuela. A naturalistic approach was used to develop the model. Leading school administrators and educational leadership theorists in both countries were interviewed by…

  15. Parent's Guide to Special Education in Washington State, 1985-86 [and] Guia para Padres: Para Educacion Especial en el Estado de Washington.

    ERIC Educational Resources Information Center

    Washington Office of the State Superintendent of Public Instruction, Olympia.

    This pamphlet guides parents of children with disabilities through the procedures for acquiring special education services in the state of Washington. Following an overview of special education, the pamphlet presents information on notice and consent procedures, confidentiality of records, individualized education programs (IEP), the placement…

  16. The Assessment of the Intelligence of Latinos in the United States. (La Medicion de la Inteligencia de los Latinos en los Estados Unidos).

    ERIC Educational Resources Information Center

    Cauce, Ana M.; And Others

    Most of the research on the assessment of the intelligence of Latinos in the United States appears to be based on some possibly erroneous or at least dubious assumptions. Among these are the following: (1) the assumption of bilinguality; (2) the assumption of equal proficiency in the English language; (3) the assumption of the equivalence of…

  17. [Group psychotherapy. Experience with a changing process at a clinic of the Instituto del Servicio de Seguridad Social de los Trabajadores del Estado (ISSSTE)].

    PubMed

    Velasco de Ongay, M E

    1977-01-01

    The problems of an ISSSTE clinic were approached within the general systems theory and it was observed that within the group there existed forces to maintain the status-quo and forces towards change; to produce the latter the group was handled during 20 hours with a slightly directive technique. The goals were to improve interpersonal relationships, to increase communication, to make known to individuals their attitudes within a group and make them sensitive to problems they shared with others. The results were good, the status-quo was broken and change started occurring.

  18. Feedback Cheerleader, Mean-Spirited Feedback Estudio Critico Discursivo De Ideologias Sobre El Feedback Escrito En Un Departamento Universitario De Espanol En Estados Unidos

    ERIC Educational Resources Information Center

    Dominguez-Mujica, Maria Eugenia

    2012-01-01

    The aim of this research is to investigate ideologies that monitor and control styles of written feedback as well as discursive resources used in the expression of those ideologies. Using socio-cognitive analysis, a development of critical discourse studies, I have analyzed 44 sessions of chat on the Internet, 78 journal notes, 31 emails and 12…

  19. El Mantenimiento o Desplazamiento Linguistico: El Futuro del Espanol en los Estados Unidos. (Linguistic Maintenance or Replacement: The Future of Spanish in the United States)

    ERIC Educational Resources Information Center

    Gaarder, Bruce A.

    1976-01-01

    What is the probability that Spanish, as a vernacular language, will survive in the U.S. with an increasing usage and prestige? Or will its usage, its speakers and its importance diminish rapidly in number and geographical extension? Can it be retained or will there be a shift into English? This article, written in Spanish, addresses these…

  20. A Transferencia do Controle da Educacao da Igreja para o Estado (The Transfer of Educational Control from the Church to the State).

    ERIC Educational Resources Information Center

    Silva, Marcos

    2000-01-01

    Analyzes the principal phases in the historical process of the occidental world that resulted in the transfer of educational control from the church to the state, demonstrating some of the consequences of this historic turn. (BT)

  1. Estados unidos puede tomar la delantera en la educacion: 50 consejos utiles (The United States Can Take the Lead in Education: 50 Suggestions).

    ERIC Educational Resources Information Center

    Education Excellence Partnership, Washington, DC.

    The Spanish-language booklet lists ways that parents, employers, teachers, administrators, principals, and grandparents, neighbors, and concerned citizens can help America reach the National Educational Goals. First, the booklet summarizes the National Education Goals in the areas of school readiness; school completion; student achievement and…

  2. Queridos Padres: En Los Estados Unidos...La Escuela es Nuestra Tambien (Dear Parents: In the United States...It's Our School Too).

    ERIC Educational Resources Information Center

    Nicolau, Siobhan; Ramos, Carmen Lydia

    This guidebook for Hispanic parents advises that children's success in school may depend on the home environment during the formative years. Hispanic youth drop out of school at a rate of 40 percent; 25 percent of those who graduate are not qualified for good jobs. In Latin American countries, parents are expected to leave education to the…

  3. Latino Families in the United States. A Resourcebook for Family Life Education = Las Familias Latinas en los Estados Unidos. Recursos para la Capacitacion Familiar.

    ERIC Educational Resources Information Center

    Andrade, Sally J., Ed.

    The primary objectives of this resource book are to increase family life educators' knowledge and understanding of Latinos and to encourage advocacy by Latinos for appropriate family life programs in their communities. English and Spanish versions of the same text are included. There are six chapters. Chapter 1 outlines the book's objectives and…

  4. Electronic Griffiths Phases and Quantum Criticality at Disordered Mott Transitions

    NASA Astrophysics Data System (ADS)

    Dobrosavljevic, Vladimir

    2012-02-01

    The effects of disorder are investigated in strongly correlated electronic systems near the Mott metal-insulator transition. Correlation effects are foundootnotetextE. C. Andrade, E. Miranda, and V. Dobrosavljevic, Phys. Rev. Lett., 102, 206403 (2009). to lead to strong disorder screening, a mechanism restricted to low-lying electronic states, very similar to what is observed in underdoped cuprates. These results suggest, however, that this effect is not specific to disordered d-wave superconductors, but is a generic feature of all disordered Mott systems. In addition, the resulting spatial inhomogeneity rapidly increasesootnotetextE. C. Andrade, E. Miranda, and V. Dobrosavljevic, Phys. Rev. Lett., 104 (23), 236401 (2010). as the Mott insulator is approached at fixed disorder strength. This behavior, which can be described as an Electronic Griffiths Phase, displays all the features expected for disorder-dominated Infinite-Randomness Fixed Point scenario of quantum criticality.

  5. Origin and Evolution of the Uranian and Neptunian Satellites: Some Dynamical Considerations

    NASA Technical Reports Server (NTRS)

    Dermott, S. F.

    1984-01-01

    The satellite system of Neptune is so irregular that some formation mechanism or subsequent dynamical evolution that sets it apart from the other, more regular, satellite systems is obviously indicated. McKinnon argued that satellite capture is the most likely possibility and has shown that tidal circularization of Triton's presumably highly eccentric initial orbit probably resulted in melting of the satellite's interior. The satellite system of Uranus, although somewhat bland, also has a number of special features that indicate an interesting dynamical history. These include the anomalously high orbital inclination of Miranda and the probable coexistence of small satellites and narrow rings inside the plant's Roche limit. The possibility that orbital evolution due to tidal dissipation is involved in both of these phenomena is discussed. Other topics discussed are: the origin of rings; the formation of coorbital satellites; the lack of stable orbit-orbit resonances in the Uranian satellite system; and chaos, tidal heating and the shapes of Miranda and Ariel.

  6. Uranus satellites - Surface properties

    NASA Technical Reports Server (NTRS)

    Veverka, J.; Brown, R. H.; Bell, Jeffrey F.

    1991-01-01

    The post-Voyager knowledge of the photometric, colorimetric, spectral, and thermal properties of the Uranian satellites is reviewed, focusing on such fundamental physical properties as albedo, color, and surface texture. While albedo variations of at least a factor of 2 exist, color differences are almost absent (Miranda) or subdued (Oberon). In the case of Titania, the strong opposition effect reported by ground-based observers was confirmed by Voyager. Voyager did not observe the opposition parts of the phase curves of the other satellites. Voyager thermal observations of Ariel and Miranda suggest that both have highly porous regoliths, thermophysically similar to those of Jupiter's icy satellites. At the time of the flyby (south pole facing the sun), maximum surface temperatures reached or exceeded 85 K, but nighttime polar temperatures are predicted to drop to 20 to 30 K because each pole spends about 40 yr in darkness. Ground-based spectroscopy identified water ice as an important surface constituent.

  7. Models of Uranium continuum radio emission

    NASA Technical Reports Server (NTRS)

    Romig, Joseph H.; Evans, David R.; Sawyer, Constance B.; Schweitzer, Andrea E.; Warwick, James W.

    1987-01-01

    Uranium continuum radio emission detected by the Voyager 2 Planetary Radio Astronomy experiment during the January 1986 encounter is considered. The continuum emissions comprised four components (equatorial emissions, anomaly emissions, strong nightside emissions, and weak nightside emissions) associated with different sources. The equatorial emissions appeared most prominently during the days before closest approach and extended from 40 kHz or below to about 120 kHz. The anomaly emissions were seen about 12 hours before closest approach and extended to about 250 kHz. The agreement found between Miranda's phase and strong radio emission at 20.4 kHz, just after closest approach, suggests intense dynamic activity on the Miranda L shell.

  8. Human exposure and risk assessment associated with mercury contamination in artisanal gold mining areas in the Brazilian Amazon.

    PubMed

    Castilhos, Zuleica; Rodrigues-Filho, Saulo; Cesar, Ricardo; Rodrigues, Ana Paula; Villas-Bôas, Roberto; de Jesus, Iracina; Lima, Marcelo; Faial, Kleber; Miranda, Antônio; Brabo, Edilson; Beinhoff, Christian; Santos, Elisabeth

    2015-08-01

    Mercury (Hg) contamination is an issue of concern in the Amazon region due to potential health effects associated with Hg exposure in artisanal gold mining areas. The study presents a human health risk assessment associated with Hg vapor inhalation and MeHg-contaminated fish ingestion, as well as Hg determination in urine, blood, and hair, of human populations (about 325 miners and 321 non-miners) from two gold mining areas in the Brazilian Amazon (São Chico and Creporizinho, Pará State). In São Chico and Creporizinho, 73 fish specimens of 13 freshwater species, and 161 specimens of 11 species, were collected for total Hg determination, respectively. The hazard quotient (HQ) is a risk indicator which defines the ratio of the exposure level and the toxicological reference dose and was applied to determine the threat of MeHg exposure. The mean Hg concentrations in fish from São Chico and Creporizinho were 0.83 ± 0.43 and 0.36 ± 0.33 μg/g, respectively. More than 60 and 22 % of fish collected in São Chico and Creporizinho, respectively, were above the Hg limit (0.5 μg/g) recommended by WHO for human consumption. For all sampling sites, HQ resulted from 1.5 to 28.5, except for the reference area. In Creporizinho, the values of HQ are close to 2 for most sites, whereas in São Chico, there is a hot spot of MeHg contamination in fish (A2-São Chico Reservoir) with the highest risk level (HQ = 28) associated with its human consumption. Mean Hg concentrations in urine, blood, and hair samples indicated that the miners group (in São Chico: urine = 17.37 μg/L; blood = 27.74 μg/L; hair = 4.50 μg/g and in Creporizinho: urine = 13.75 μg/L; blood = 25.23 μg/L; hair: 4.58 μg/g) was more exposed to mercury compared to non-miners (in São Chico: urine = 5.73 μg/L; blood = 16.50 μg/L; hair = 3.16 μg/g and in Creporizinho: urine = 3.91 μg/L; blood = 21.04 μg/L, hair = 1.88 μg/g). These high Hg levels (found

  9. Relationship of physical activity and sedentarism with tobacco and alcohol consumption, and Mediterranean diet in Spanish teenagers.

    PubMed

    Grao-Cruces, Alberto; Nuviala, Alberto; Fernández-Martínez, Antonio; Martínez-López, Emilio-José

    2015-04-01

    Introducción y objetivos: Este estudio examinó la asociación de la actividad física y el sedentarismo con el consumo de alcohol y tabaco, y la adherencia a la dieta mediterránea en adolescentes de ambos sexos. Métodos: Un total de 1897 adolescentes españoles (12-16 años) participaron en el presente estudio transversal. Las variables fueron medidas mediante cuestionarios previamente validados para estas edades. Resultados: La actividad física estuvo positivamente asociada con el grado de adherencia a la dieta mediterránea en ambos sexos (ß = ,144, P < ,001 para chicos y ß = ,066, P < ,05 en chicas), e inversamente asociada con el tabaquismo en chicos (ß = -,135, P =.

  10. Aspects of the coriolis interaction in U235

    SciTech Connect

    Ward, D.; Clark, R.M.; Cromaz, M.; Deleplanque, M.A.; Diamond, R.M.; Fallon, P.; Lane, G.J.; Lee, I.Y.; Gorgen, A.; Macchiavelli, A.O.; Stephens, F.S.; Svensson, C.E.; Vetter, K.; Cline, D.; Hayes, A.B.; Teng, R.; Wu, C.-Y.; Nakatsukasa, T.

    2005-01-01

    We have performed three separate experiments at LBNL's 88-Inch Cyclotron over a period of several years in which {sup 235}U (thick target) was Coulomb-excited. It involved stand-alone experiments with Gammasphere and with the 8PI Spectrometer using {sup 136}Xe beams at 720 MeV, and a CHICO-Gammasphere experiment with an {sup 40}Ar beam at 180 MeV. In addition to extending the known negative-parity bands to high spin, we have assigned levels in some seven positive-parity bands which are in some cases (e.g. [631]1/2, [624]7/2 and [622]5/2) strongly populated by E3 excitation. The CHICO data has been analyzed to extract E2 and E3 matrix elements from the observed yields. Additionally, many E1 and M1 matrix elements could be extracted from the {gamma}-ray branching ratios.

  11. Aspects Of The Coriolis Interaction In 235U

    SciTech Connect

    Ward, D.; Clark, R.M.; Cromaz, M.; Deleplanque, M.A.; Diamond, R.M.; Fallon, P.; Lee, I.Y.; Macchiavelli, A.O.; Stephens, F.S.; Lane, G.J.; Goergen, A.; Svensson, C.E.; Vetter, K.; Cline, D.; Hayes, A.B.; Teng, R.; Wu, C.-Y.; Nakatsukasa, T.

    2005-04-05

    We have performed three separate experiments at LBNL's 88-Inch Cyclotron over a period of several years in which 235U (thick target) was Coulomb-excited. It involved stand-alone experiments with Gammasphere and with the 8PI Spectrometer using 136Xe beams at 720 MeV, and a CHICO-Gammasphere experiment with an 40Ar beam at 180 MeV. In addition to extending the known negative-parity bands to high spin, we have assigned levels in some seven positive-parity bands which are in some cases ( e.g. [631]1/2, [624]7/2 and [622]5/2) strongly populated by E3 excitation. The CHICO data has been analyzed to extract E2 and E3 matrix elements from the observed yields. Additionally, many E1 and M1 matrix elements could be extracted from the {gamma}-ray branching ratios.

  12. Revision of the Japanese species of Trichoclinocera Collin (Diptera: Empididae: Clinocerinae).

    PubMed

    Saigusa, Toyohei; Sinclair, Bradley J

    2016-01-01

    The Japanese species of Trichoclinocera are revised and include nine species, of which seven are new species (T. dasy-scutellum (Saigusa), T. fuscipennis Saigusa, T. gracilis sp. nov., T. grandis sp. nov., T. miranda sp. nov., T. setigera sp. nov., T. shinogii sp. nov., T. stigmatica sp. nov., T. takagii sp. nov.). A key to all nine species is provided, their distributions mapped and affinities discussed. PMID:27394729

  13. New Zealand geothermal: Wairakei -- 40 years

    SciTech Connect

    1998-09-01

    This quarterly bulletin highlights the geothermal developments in New Zealand with the following articles: A brief history of the Wairakei geothermal power project; Geothermal resources in New Zealand -- An overview; Domestic and commercial heating and bathing -- Rotorua area; Kawerau geothermal development: A case study; Timber drying at Kawerau; Geothermal greenhouses at Kawerau; Drying of fibrous crops using geothermal steam and hot water at the Taupo Lucerne Company; Prawn Park -- Taupo, New Zealand; Geothermal orchids; Miranda hot springs; and Geothermal pipeline.

  14. Astrometry in the Uranian system of satellites

    NASA Astrophysics Data System (ADS)

    Birlan, Mirel; Nedelcu, Dan Alin

    2008-09-01

    The predicted occultation between the satellites Miranda(UV) and Oberon(UIV) was observed on July 30, 2007 using SpeX/IRTF system and CODAM-Paris Observatory facility. Data analysis reveals that the predicted magnitude drop for this phenomenon was overestimated and we establish an upper limit of 0m.05 for the phenomenon, perhaps due to a non-lambertian limb scattering. The astrometry obtained from this run reveals good agreement with the LA06 numerical model.

  15. Electrostatic waves in the magnetosphere of Uranus

    NASA Technical Reports Server (NTRS)

    Kurth, W. S; Gurnett, D. A.; Barbosa, D. D.; Scarf, F. L.

    1987-01-01

    Observations of electrostatic waves in the magnetosphere of Uranus are discussed with attention focused on the Bernstein emissions. The most intense Bernstein waves were observed near the magnetic equator of the planet, even though the tilt of the Uranian magnetic moment is very large relative to the rotational axis. In addition to the Bernstein modes, a number of highly sporadic emissions were detected in the vicinity of the Miranda L shell.

  16. Psychiatric aspects of criminal responsibility: insanity and mitigation.

    PubMed

    Burrows, Maureen; Reid, William H

    2011-11-01

    Forensic psychiatry expertise may be useful to criminal courts in several ways, including evaluating competence (e.g., to stand trial, waive Miranda rights, confess, plead, represent oneself, or be sentenced), assessing responsibility for alleged criminal behavior, and clarifying mental or psychosocial factors that may mitigate criminal charges or the form and severity of punishment. This column focuses on psychiatric/psychological aspects of mitigation in criminal matters.

  17. Revision of the Japanese species of Trichoclinocera Collin (Diptera: Empididae: Clinocerinae).

    PubMed

    Saigusa, Toyohei; Sinclair, Bradley J

    2016-01-01

    The Japanese species of Trichoclinocera are revised and include nine species, of which seven are new species (T. dasy-scutellum (Saigusa), T. fuscipennis Saigusa, T. gracilis sp. nov., T. grandis sp. nov., T. miranda sp. nov., T. setigera sp. nov., T. shinogii sp. nov., T. stigmatica sp. nov., T. takagii sp. nov.). A key to all nine species is provided, their distributions mapped and affinities discussed.

  18. First Report of Orange Rust of Sugarcane Caused by Puccinia kuehnii in Mexico, El Salvador and Panama.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Symptoms of sugarcane orange rust were observed on July 17, 2008 in sugarcane varieties, Mex 57-1285, Mex 61-230 and Co 301 (a clone received in Mexico in 1953) at the Centro de Investigación y Desarrollo de la Caña de Azúcar en Tuxtla Chico, Chiapas, Mexico.In El Salvador, from August 2008 through ...

  19. Shape evolution in neutron-rich nuclei near the r-process path

    SciTech Connect

    Wu, Ching-Yen

    2015-10-01

    To assess the resources needed to field a quantitative measurement to advance our knowledge on shape evolution, we have carried out a numerical simulation of the Coulomb excitation for 112Ru at 460 MeV bombarding energy on a 208Pb target of 1 mg/cm2 using a semiclassical code, GOSIA with GRETINA/CHICO2.

  20. Sandstone provenance and diagenesis in relation to Late Cretaceous regional depositional systems and paleogeography, Sacramento Basin, CA

    SciTech Connect

    Mertz, K.A. Jr. ); Nilsen, T.H. )

    1990-05-01

    Petrographic modal analyses of sandstone samples from the Upper Cretaceous Guinda, Forbes, Kone, Marsh Creek, Chico, Starky, Winters, and Mokelumne River formations of the Sacramento basin reveal that samples are dominated by plutoniclastic and volcaniclastic detritus, have intermediate plagioclase-to-total=feldspar ratios (0.48-0.65), and have high but variable L{sub v}/L ratios (0.51-0.80). Forbes/Kione sandstones, in comparison to Starkey/Winters samples, have higher proportions of volcaniclastic (plagioclase) to plutoniclastic (Q{sub m}, K) detritus and higher W{sub p}/total Q and L{sub m}/L{sub v} ratios. The Chico Formation, like the Starkey/Winters, is dominated by plutoniclastic material; in comparison to Forbes/Kione samples, the Chico has higher total lithic values (L{sub t}), especially in the L{sub m} fraction. These data strongly support derivation of the sands from the Cordilleran magmatic arc system to the north and east. Sandstones from the Chico, Starkey, Winters, and Mokelumne River formations were derived primarily from the dissected Sierran magmatic arc complex to the east, with a minor but significant secondary source in foothill belt metamorphic complexes. Forbes and Kione sandstones, in contrast, appear to have been derived from the Idaho Batholith and Blue Mountain regions of Idaho/Oregon to the north and northeast. When corrections are applied to account for significant diagenetic dissolution of plagioclase and compactional alteration of lithic fragments (especially L{sub v}), the dissected or transitional arc provenance for most samples is strengthened. Modal data and paleogeographic reconstructions suggest that during the early and middle Campanian, most detritus in the Sacramento basin was derived from the north/northeast (erosion of the Idaho batholith arc system), reflecting southward progradation of the Kion/Forbes delta-submarine fan system into the longitudinal forearc basin.

  1. NOTE: Red, Gray, and Blue: Near Infrared Spectrophotometry of Faint Moons of Uranus and Neptune

    NASA Astrophysics Data System (ADS)

    Trilling, David E.; Brown, Robert H.

    2000-11-01

    Using the CoCo Cold Coronagraph at NASA's Infrared Telescope Facility on Mauna Kea, we observed the uranian satellites Miranda, Puck, Portia, and Rosalind and the neptunian satellite Proteus in the near infrared (JHK) to determine the albedos of those faint satellites. In V-J, all of Puck, Portia, Rosalind, and Proteus are very blue, similar to the colors of many icy satellites and of water ice. The satellites we observed have a wide range of J-H colors, with Miranda being blue, Proteus being gray, and Puck, Portia, and Rosalind being red. For the satellites for which we could determine H-K (Miranda, Puck, and Proteus), the colors are gray to red. As a whole, spectrally, these five satellites lie between icy Solar System satellites (e.g., saturnian satellites or the major uranian satellites) and Kuiper belt objects. The redness of Proteus and Puck and perhaps other satellites suggests the presence of organic material, although the redness is also similar to that of C- and D-class asteroids and some outer jovian moons. In all cases, diagnostic spectral features could be masked by broadband photometry.

  2. Dehumidification of Iberia by enhanced summer upwelling

    NASA Astrophysics Data System (ADS)

    Miranda, P. M.; Costa, V.; Nogueira, M.; Semedo, A.

    2015-12-01

    Dehumidification of Iberia by enhanced summer upwelling Miranda PMA, Costa V, Semedo AIDL, Faculdade de Ciências, University of LisbonA 24-year simulation of the recent Iberian climate, using the WRF model at 9km resolution forced by ERA-Interim reanalysis (1989-2012), is analysed for the decadal evolution of the upwelling forcing coastal wind and for column integrated Precipitable water vapour (PWV). Results indicate that, unlike what was found by Bakun et al. (2009) for the Peruvian region, a statistically significant trend in the upwelling favourable (northerly) wind has been accompanied by a corresponding decrease in PWV, not only inland but also over the coastal waters. Such increase is consistent with a reinforced northerly coastal jet in the maritime boundary layer contributing to atmospheric Ekman pumping of dry continental air into the coastal region. Diagnostics of the prevalence of the Iberian thermal low following Hoinka and Castro (2003) also show a positive trend in its frequency during an extended summer period (April to September). These results are consistent with recent studies indicating an upward trend in the frequency of upwelling in SW Iberia (Alves and Miranda 2013), and may be relevant for climate change applications as an increase in coastal upwelling (Miranda et al 2013) may lead to substantial regional impacts in the subtropics. Aknowledgements: Study supported by FCT Grant RECI/GEO-MET/0380/2012Alves JMR, Miranda PMA (2013) Variability of Iberian upwelling implied by ERA-40 and ERA-Interim reanalyses, Tellus A 2013, http://dx.doi.org/10.3402/tellusa.v65i0.19245.Bakun et al (2010) Greenhouse gas, upwelling-favorable winds, and the future of coastal ocean upwelling ecosystems, Global Change Biology, doi: 10.1111/j.1365-2486.2009.02094.xHoinka KP, Castro M (2003) The Iberian Peninsula thermal low. QJRMS, 129, 1491- 1511, doi: 10.1256/qj.01.189.Miranda et al (2013) Climate change and upwelling: response of Iberian upwelling to atmospheric

  3. A preliminary combined geochemical and rock-magnetic study of tailings of non-magnetic ores from Tlalpujahua-El Oro mining districts, Michoacán and Estado de México States

    NASA Astrophysics Data System (ADS)

    Morales, J.; Hernández-Bernal, M.; Corona-Chávez, P.

    2013-05-01

    Mining activities in Mexico have been continuously developed since 1550. Since then several thousands of million tons of waste produced as a result of the mining activity have been accumulated and scattered throughout the territory. These wastes can contain minerals with potentially toxic elements (PTEs) such as Cr, As, Cd, Cu, Pb, Zn, which show a distribution and mobility in the environment according to the chemical species in which are hosted. The Tlalpujahua - El Oro mining district (TOMD) concentrates an impressive number of mines and historical tailings. Due to their in-slope hydrographic position, the mining activities increase the risk of generating anthropogenic effluent that could contribute with a certain amount of mine-water with high contents of PTEs. Although magnetic methods have been widely applied to pollution studies of regions with high anthropogenic impact, its application to tailings is scarce in spite of the several studies that document the environmental effects as a result of the mining waste. We present the results obtained by combined geochemical and rock-magnetic studies in these tailings. Similarly to the traditional EPTs vs SiO2 diagrams, EPTs vs Fe show good linear (inverse) correlation with most of these health-risk elements. Fe concentrations determined magnetically from room-temperature susceptibility measurements agrees with those obtained by traditionally geochemical methods.

  4. PROCENTAJE DE PSILIDOS PORTADORES DE Canidatus Liberibacter asiaticus Y SU RELACION CON LA INCIDENCIA DE HLB EN CINCO HUERTAS COMERCIALES DE LIMON MEXICANO {Citrus aurantifolia (Christm) Swingle} EN EL ESTADO DE COLIMA MEXICO

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Asian citrus psyllids (Diaphorina citri) were individually analyzed by qPCR to detect Candidatus Liberibacter asiaticus (CLas). The psyllids were collected in Mexican lime (Citrus aurantifolia) trees in five commercial orchards in Tecomán and Manzanillo, Colima with severe symptoms of classical mott...

  5. Guia para estudiantes: Ayuda economica del Departamento de Educacion de los Estados Unidos, 2003-2004 (The Student Guide: Financial Aid from the U.S. Department of Education, 2003-2004).

    ERIC Educational Resources Information Center

    Office of Federal Student Aid (ED), Washington, DC.

    This Spanish language publication explains what federal student financial aid is and the types of student financial aid that are available. The guide opens with an overview of federal student financial aid, and then discusses how to find out about student aid. A section of general information discusses eligibility and dependency. Types of federal…

  6. Opportunities at Independent Colleges and Universities in New York State through the Higher Education Opportunity Program = Oportunidades en los colegios y universidades independientes en el Estado de Nueva York a traves de los programas de oportunidad en educacion.

    ERIC Educational Resources Information Center

    State Univ. of New York, Albany.

    Information on programs that address special needs of students from disadvantaged backgrounds who attend private colleges and universities in New York State is provided in separate English and Spanish reports. The Higher Education Opportunity Program (HEOP) provides supportive services and financial aid. Information is provided on: eligibility for…

  7. Opportunities at Independent Colleges and Universities in New York State through the Higher Education Opportunity Program = Las Oportunidades en las Instituciones Independendientes de Nivel Universitario en el Estado de Nueva York a traves de los Programas de Oportunidades Educativas Universitarias.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Bureau of Higher Education Opportunity Programs.

    A guide to the opportunities at private colleges and universities in New York State through the Higher Education Opportunity Program (HEOP) is presented. The HEOP is designed to meet the special needs of students from disadvantaged backgrounds through screening, testing, counseling, tutoring, teaching, and financial assistance. Generally, students…

  8. La Naturaleza del Estado Cubano y el Llamado a La Inversion Extranjera: Crisis o Invitacion al Cambio (The Nature of the Cuban State and the Call for Foreign Investment: Crisis or Invitation to Change).

    ERIC Educational Resources Information Center

    Campbell, Luis E. Hartly

    1995-01-01

    Presents a study of the period of crisis in modern Cuba dating back to 1991. An overview of the Cuban character is given in order to promote understanding of the environment that has permitted the present socialist government to remain in power since 1959. It is concluded that Cuba requires massive foreign investment in every sector for its…

  9. Libros bilingues, traducciones desparpajadas y traducciones pobres: libros en espanol publicados en los Estados Unidos (Bilingual Books, Careless Translations, and Bad Translations: Books in Spanish Published in the United States).

    ERIC Educational Resources Information Center

    Schon, Isabel

    2003-01-01

    Discusses the importance of providing Spanish-speaking students with high-quality reading materials in Spanish and avoiding materials that have been badly translated into Spanish. Provides an annotated list of 10 books recommended for young children and a Spanish grammar for more advanced readers. Lists 29 badly translated books. Describes a Web…

  10. Reaching Higher. A Parent's Guide to the Washington Assessment of Learning. Revised = Para llegar mas arriba. Una guia para padres sobre la evaluacion del aprendizaje de los estudiantes del estado de Washington (Washington Assessment of Student Learning). Revisado.

    ERIC Educational Resources Information Center

    Washington Office of the State Superintendent of Public Instruction, Olympia.

    This guide in English and Spanish is designed to answer questions parents may have about the Washington Assessment of Student Learning (WASL), including how it will help improve their children's education, how it is scored, and how to use the information it provides. In Washington, clear educational goals for subject content, thinking skills, and…

  11. Factors influencing tropical island freshwater fishes:Species, status, and management implications in puerto rico [Factores que influencian a los peces tropicales de agua dulce: Especies, estado actual e implicaciones para el manejo en Puerto Rico

    USGS Publications Warehouse

    Wesley, Neal J.; Lilyestrom, C.G.; Kwak, T.J.

    2009-01-01

    Anthropogenic effects including river regulation, watershed development, contamination, and fish introductions have substantially affected the majority of freshwater habitats in Europe and North America. This pattern of resource development and degradation is widespread in the tropics, and often little is known about the resources before they are lost. This article describes the freshwater resources of Puerto Rico and identifies factors that threaten conservation of native fishes. The fishes found in freshwater habitats of Puerto Rico represent a moderately diverse assemblage composed of 14 orders, 29 families, and 82 species. There are fewer than 10 species of native peripherally-freshwater fish that require a link to marine systems. Introductions of nonindigenous species have greatly expanded fish diversity in freshwater systems, and native estuarine and marine species (18 families) also commonly enter lowland rivers and brackish lagoons. Environmental alterations, including land use and development, stream channelization, pollution, and the impoundment of rivers, combined with nonnative species introductions threaten the health and sustainability of aquatic resources in Puerto Rico. Six principal areas for attention that are important influences on the current and future status of the freshwater fish resources of Puerto Rico are identified and discussed.

  12. [Food consumption and the nutritional status of schoolchildren of the Community of Madrid (CAENPE): general methodology and overall food consumption. Consumo de alimentos y estado nutricional de la población escolar].

    PubMed

    Vázquez, C; de Cos, A I; Martínez, P; Jaunsolo, M A; Román, E; Gómez, C; López, T; Hernáez, I; Seijas, V; Ramos, V

    1995-01-01

    The CAENPE study (Food Consumption and Nutritional State of the School Population) was a transversal observational study funded and promoted by the Directorate-General of Food Hygiene in the Ministry of Health, implemented in 1991-93, with the main aim of quantifying food consumption in the school population (6-14 years of age) in the Regional Community of Madrid, together with an anthropometric study and nutritional analysis of that population. This project sets our the General Methodology for the study, paying particular attention to the sampling design, to ensure that the sample is representative of the community, and the results of the overall consumption of food and its comparison with recommended diet and other population studies. Quantification shows a high and rising consumption of meat, meat products, sweets, snacks and prepared dishes, suitable consumption of eggs, legumes and fruit and a notable lack of greens, vegetables and potatoes. The basic results underline the need to introduce educational measures with practical effect on home and school menus.

  13. Un Nuevo Convenio para el Aprendizaje: Una Sociedad para Mejorar los Resultados Educativos en el Estado de Nueva York (A New Compact for Learning: A Partnership To Improve Educational Results in New York State).

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Office of Elementary, Middle and Secondary Education.

    This Spanish translation of the abridged version of "A New Compact for Learning" acknowledges the current U.S. education system's inadequacy to educate U.S. citizenry and introduces New York State's New Compact for Learning, intended as a plan to reorganize New York's own system. The compact's fundamental principles are: (1) recognizing that all…

  14. Variability in biochemical components of the mussel (Mytilus galloprovincialis) cultured after Prestige oil spill.

    PubMed

    Peteiro, Laura G; Labarta, Uxío; Fernández-Reiriz, María José

    2007-05-01

    The biochemical composition (proteins, carbohydrates, glycogen, total lipids and lipid classes) of the mussel Mytilus galloprovincialis was investigated during an experimental culture using mussel seed from areas with different degree of exposure to the Prestige oil spill. The aim of the study was to identify alterations in the biochemical composition of mussel seed from natural populations commonly used in Galicia for mussel raft culture that might be linked to previous oil exposure. We have selected three mussel seed populations from Pindo, Miranda and Redes, that were characterised in a previous study according to the oil exposure three months after the spill. These populations were transplanted to a raft culture system in the Ría de Ares-Betanzos where our experimental culture followed standard commercial techniques from March 2003 to February 2004. Mussels from Pindo (characterised as the most affected area by the oil spill) showed marked differences in lipid composition with regard to other populations in the content of triacylglycerols, (P<0.001), free fatty acids (P<0.001) and phospholipids (P<0.05) at the onset of the culture. Although these differences in lipid composition might reflect their previous exposition to hydrocarbons, this pattern did not last longer most likely due to depuration of hydrocarbons stored in the tissues or by the development of certain tolerance to PAHs. These significant differences were not detected between Miranda (designed as hardly affected area) and Redes (designed as reference area) which may reflect that Miranda mussels were not affected or only hardly affected by the spill. With the exception of the onset of the culture, biochemical composition showed similar patterns in all mussel populations. Then, the fact of being cultured in a common environment seemed to be more responsible for the long-term variability in the energetic reserve than the origin of the populations or their previous biochemical status. PMID:17360242

  15. Variability in biochemical components of the mussel (Mytilus galloprovincialis) cultured after Prestige oil spill.

    PubMed

    Peteiro, Laura G; Labarta, Uxío; Fernández-Reiriz, María José

    2007-05-01

    The biochemical composition (proteins, carbohydrates, glycogen, total lipids and lipid classes) of the mussel Mytilus galloprovincialis was investigated during an experimental culture using mussel seed from areas with different degree of exposure to the Prestige oil spill. The aim of the study was to identify alterations in the biochemical composition of mussel seed from natural populations commonly used in Galicia for mussel raft culture that might be linked to previous oil exposure. We have selected three mussel seed populations from Pindo, Miranda and Redes, that were characterised in a previous study according to the oil exposure three months after the spill. These populations were transplanted to a raft culture system in the Ría de Ares-Betanzos where our experimental culture followed standard commercial techniques from March 2003 to February 2004. Mussels from Pindo (characterised as the most affected area by the oil spill) showed marked differences in lipid composition with regard to other populations in the content of triacylglycerols, (P<0.001), free fatty acids (P<0.001) and phospholipids (P<0.05) at the onset of the culture. Although these differences in lipid composition might reflect their previous exposition to hydrocarbons, this pattern did not last longer most likely due to depuration of hydrocarbons stored in the tissues or by the development of certain tolerance to PAHs. These significant differences were not detected between Miranda (designed as hardly affected area) and Redes (designed as reference area) which may reflect that Miranda mussels were not affected or only hardly affected by the spill. With the exception of the onset of the culture, biochemical composition showed similar patterns in all mussel populations. Then, the fact of being cultured in a common environment seemed to be more responsible for the long-term variability in the energetic reserve than the origin of the populations or their previous biochemical status.

  16. The grandest tour - Voyager

    NASA Technical Reports Server (NTRS)

    Murrill, Mary B.

    1993-01-01

    The Voyager mission based on two spacecraft, Voyager 1 and Voyager 2, launched on September 5, 1977 and August 20 1977, respectively, is reviewed. The mission was designed to take advantage of a rare geometric arrangement of Jupiter, Saturn, Uranus, and Neptune that occurs only once every 176 years. Particular attention is given to data on Jupiter's ring and moons, the discovery of active volcanoes on Io, Jovian magnetism, Saturn's atmosphere, Titan and other moons, Uranus and Miranda, Uranian moons and rings, Triton's atmosphere.

  17. Computational identification of putative miRNAs and their target genes in pathogenic amoeba Naegleria fowleri.

    PubMed

    Padmashree, Dyavegowda; Swamy, Narayanaswamy Ramachandra

    2015-01-01

    Naegleria fowleri is a parasitic unicellular free living eukaryotic amoeba. The parasite spreads through contaminated water and causes primary amoebic meningoencephalitis (PAM). Therefore, it is of interest to understand its molecular pathogenesis. Hence, we analyzed the parasite genome for miRNAs (microRNAs) that are non-coding, single stranded RNA molecules. We identified 245 miRNAs using computational methods in N. fowleri, of which five miRNAs are conserved. The predicted miRNA targets were analyzed by using miRanda (software) and further studied the functions by subsequently annotating using AmiGo (a gene ontology web tool). PMID:26770029

  18. Urey prize lecture: On the diversity of plausible planetary systems

    NASA Technical Reports Server (NTRS)

    Lissauer, J. J.

    1995-01-01

    Models of planet formation and of the orbital stability of planetary systems are used to predict the variety of planetary and satellite systems that may be present within our galaxy. A new approximate global criterion for orbital stability of planetary systems based on an extension of the local resonance overlap criterion is proposed. This criterion implies that at least some of Uranus' small inner moons are significantly less massive than predicted by estimates based on Voyager volumes and densities assumed to equal that of Miranda. Simple calculations (neglecting planetary gravity) suggest that giant planets which acrete substantial amounts of gas while their envelopes are extremely distended ultimately rotate rapidly in the prgrade direction.

  19. Early LLNL Application Scaling Results on BlueGene/L

    SciTech Connect

    Cook, A W; Greenough, J A; Gygi, F; Streitz, F H; Kubota, A; Bulatov, V V; Louis, S

    2004-11-01

    Miranda is a high order hydrodynamics code for computing fluid instabilities and turbulent mixing. It employs FFTs and band-diagonal matrix solvers for computing spectrally-accurate derivatives, combined with high-order integration methods for time advancement; e.g., fourth-order Runge-Kutta. Fluid properties, i.e., viscosity, diffusivity and thermal conductivity, are computed from kinetic theory. The code contains solvers for both compressible and incompressible flows. It has been used primarily for studying Rayleigh-Taylor (R-T) and Richtmyer-Meshkov (R-M) instabilities, which occur in supernovae and Inertial Confinement Fusion (ICF).

  20. Advertisement call of Scinax camposseabrai (Bokermann, 1968) (Anura: Hylidae), with comments on the call of three species of the Scinax ruber clade.

    PubMed

    Novaes, Gabriel; Zina, Juliana

    2016-01-01

    Scinax camposseabrai was allocated into the Scinax ruber clade by Caramaschi & Cardoso (2006) by overall similarities as snout not pointed, breeding in open areas, and an advertisement calls with multipulsed notes. This assumption about the call was based solely on an onomatopoeia provided by Bokermann (1968). Herein we provide a formal description of the advertisement call of S. camposseabrai and compare it with described calls of other S. ruber clade species. Additionally, we provide descriptions of the advertisement calls of three sympatric species of the S. ruber clade: S. eurydice (Bokermann), S. pachycrus (Miranda-Ribeiro) and S. cf. x-signatus. PMID:27394262

  1. Taxonomic review of catsharks of the Scyliorhinus haeckelii group, with the description of a new species (Chondrichthyes: Carcharhiniformes: Scyliorhinidae).

    PubMed

    Soares, Karla D A; Gomes, Ulisses L; Carvalho, Marcelo R De

    2016-01-19

    Sharks of the genus Scyliorhinus from the southwestern Atlantic are reviewed; identification problems and taxonomic misinformation given in the literature are rectified. After extensive examination of the external and internal morphology of specimens collected mostly off southeastern and southern Brazil, Scyliorhinus besnardi Springer & Sadowsky, 1970 is placed in the synonymy of S. haeckelii (Miranda Ribeiro, 1907), which is thoroughly redescribed. Additionally, a new species, Scyliorhinus cabofriensis, sp. nov., is described from the state of Rio de Janeiro, distinguished from all southwestern Atlantic congeners by its color pattern, clasper and neurocranial morphology, and proportional measurements. A key to Scyliorhinus species occurring in the southwestern Atlantic is also provided.

  2. Computational identification of putative miRNAs and their target genes in pathogenic amoeba Naegleria fowleri.

    PubMed

    Padmashree, Dyavegowda; Swamy, Narayanaswamy Ramachandra

    2015-01-01

    Naegleria fowleri is a parasitic unicellular free living eukaryotic amoeba. The parasite spreads through contaminated water and causes primary amoebic meningoencephalitis (PAM). Therefore, it is of interest to understand its molecular pathogenesis. Hence, we analyzed the parasite genome for miRNAs (microRNAs) that are non-coding, single stranded RNA molecules. We identified 245 miRNAs using computational methods in N. fowleri, of which five miRNAs are conserved. The predicted miRNA targets were analyzed by using miRanda (software) and further studied the functions by subsequently annotating using AmiGo (a gene ontology web tool).

  3. Computational identification of putative miRNAs and their target genes in pathogenic amoeba Naegleria fowleri

    PubMed Central

    Padmashree, Dyavegowda; Swamy, Narayanaswamy Ramachandra

    2015-01-01

    Naegleria fowleri is a parasitic unicellular free living eukaryotic amoeba. The parasite spreads through contaminated water and causes primary amoebic meningoencephalitis (PAM). Therefore, it is of interest to understand its molecular pathogenesis. Hence, we analyzed the parasite genome for miRNAs (microRNAs) that are non-coding, single stranded RNA molecules. We identified 245 miRNAs using computational methods in N. fowleri, of which five miRNAs are conserved. The predicted miRNA targets were analyzed by using miRanda (software) and further studied the functions by subsequently annotating using AmiGo (a gene ontology web tool). PMID:26770029

  4. A general theory for the Uranian satellites

    NASA Technical Reports Server (NTRS)

    Laskar, J.

    1986-01-01

    A general analytical theory of the five main satellites of Uranus, including the secular and short period terms hereafter denoted by GUST, is presented. A comparison is made with an internal numerical integration with nominal masses of Veillet (1983). The precision of the theory goes from about 10 km for Miranda to 100 km for Oberon. The short period terms in the motions of Titania and Oberon are larger than 500 km. They should make possible the determination of the masses of the outer satellites through the optical data of Voyager encounter.

  5. [Position statement. Protein/creatinine in a randomly obtained urine sample in the diagnosis of proteinuria in pregnant patients with arterial hypertension].

    PubMed

    2012-01-01

    Leaños Miranda and collaborators published that the measurement of protein/creatinine ratio in a single random urine sample is a reliable indicator of significant proteinuria and may be reasonably used as alternative to the 24-hours urine collection method as a diagnostic criteria for urinary protein, and it is also a criterion for identifying the disease severity. This leads us to present this successful result of the investigation as a position statement in the care of pregnant women with hypertension.

  6. The advertisement call of Bokermannohyla flavopicta Leite, Pezzuti & Garcia, 2012 (Anura: Hylidae) from the mountains of Chapada Diamantina, Bahia, Brazil.

    PubMed

    Rocha, Pedro Carvalho; Thompson, Julia Resende; Leite, Felipe Sá Fortes; Garcia, Paulo Christiano De Anchietta

    2016-01-07

    Bokermannohyla Faivovich, Haddad, Garcia, Frost, Campbell & Wheeler (2005) is a Brazilian treefrog genus currently composed of 32 species (Brandão et al. 2012; Leite et al. 2012; Frost 2015). The genus comprehends four, putatively monophyletic, species groups: B. circumdata, B. claresignata, B. martinsi, and B. pseudopseudis (sensu Faivovich et al. 2005). The B. pseudopseudis group includes nine species: B. alvarengai (Bokermann 1956), B. flavopicta Leite et al. 2012, B. ibitiguara (Cardoso 1983), B. itapoty Lugli & Haddad 2006a, B. oxente Lugli & Haddad 2006b, B. pseudopseudis (Miranda-Ribeiro 1937), B. sagarana Leite et al. 2011, B. sapiranga Brandão et al. 2012, and B. saxicola (Bokermann 1964).

  7. Recent decadal trends in Iberian water vapour: GPS analysis and WRF process study

    NASA Astrophysics Data System (ADS)

    Miranda, Pedro M. A.; Nogueira, Miguel; Semedo, Alvaro; Benevides, Pedro; Catalao, Joao; Costa, Vera

    2016-04-01

    A 24-year simulation of the recent Iberian climate, using the WRF model at 9km resolution forced by ERA-Interim reanalysis (1989-2012), is analysed for the decadal evolution of the upwelling forcing coastal wind and for column integrated Precipitable water vapour (PWV). Results indicate that, unlike what was found by Bakun et al. (2009) for the Peruvian region, a statistically significant trend in the upwelling favourable (northerly) wind has been accompanied by a corresponding decrease in PWV, not only inland but also over the coastal waters. Such increase is consistent with a reinforced northerly coastal jet in the maritime boundary layer contributing to atmospheric Ekman pumping of dry continental air into the coastal region. Diagnostics of the prevalence of the Iberian thermal low following Hoinka and Castro (2003) also show a positive trend in its frequency during an extended summer period (April to September). These results are consistent with recent studies indicating an upward trend in the frequency of upwelling in SW Iberia (Alves and Miranda 2013), and may be relevant for climate change applications as an increase in coastal upwelling (Miranda et al 2013) may lead to substantial regional impacts in the subtropics. The same analysis with ERA-Interim reanalysis data, which was used to force the WRF simulations, does not reveal the same signal in PWV, and indeed correlates poorly with the GPS observations, indicating that the data assimilation process makes the water vapour data in reanalysis unusable for climate change purposes. The good correlation between the WRF simulated data and GPS observations allow for a detailed analysis of the processes involved in the evolution of the PWV field. Akcnowledgements: Study done within FCT Grant RECI/GEO-MET/0380/2012, financially supported by FCT Grant UID/ GEO/50019/2013-IDL Alves JMR, Miranda PMA (2013) Variability of Iberian upwelling implied by ERA-40 and ERA-Interim reanalyses, Tellus A 2013, http

  8. Taxonomic review of catsharks of the Scyliorhinus haeckelii group, with the description of a new species (Chondrichthyes: Carcharhiniformes: Scyliorhinidae).

    PubMed

    Soares, Karla D A; Gomes, Ulisses L; Carvalho, Marcelo R De

    2016-01-01

    Sharks of the genus Scyliorhinus from the southwestern Atlantic are reviewed; identification problems and taxonomic misinformation given in the literature are rectified. After extensive examination of the external and internal morphology of specimens collected mostly off southeastern and southern Brazil, Scyliorhinus besnardi Springer & Sadowsky, 1970 is placed in the synonymy of S. haeckelii (Miranda Ribeiro, 1907), which is thoroughly redescribed. Additionally, a new species, Scyliorhinus cabofriensis, sp. nov., is described from the state of Rio de Janeiro, distinguished from all southwestern Atlantic congeners by its color pattern, clasper and neurocranial morphology, and proportional measurements. A key to Scyliorhinus species occurring in the southwestern Atlantic is also provided. PMID:27395851

  9. Satellite masses in the Uranus and Neptune systems

    SciTech Connect

    Greenberg, R.

    1984-10-01

    Satellite masses are derivation with emphasis on implications for bulk densities and albedos is reviewed. In the Uranian system the inner satellites have lower densities and/or higher albedos than the outer ones. However, uncertainties are great enough that all five satellites may have nearly equal densities. In such a case the albedo would decrease with semimajor axis. A more severe constraint is placed on Miranda's mass, and hence on its density and albedo. The recent radiometric value for Triton's diameter, combined with mass determinations, yields a density greater than 4 gm/cm3.

  10. Satellite Masses in the Uranus and Neptune Systems

    NASA Technical Reports Server (NTRS)

    Greenberg, R.

    1984-01-01

    Satellite masses are derivation with emphasis on implications for bulk densities and albedos is reviewed. In the Uranian system the inner satellites have lower densities and/or higher albedos than the outer ones. However, uncertainties are great enough that all five satellites may have nearly equal densities. In such a case the albedo would decrease with semimajor axis. A more severe constraint is placed on Miranda's mass, and hence on its density and albedo. The recent radiometric value for Triton's diameter, combined with mass determinations, yields a density greater than 4 gm/cu cm.

  11. The control networks of the satellites of Uranus

    NASA Technical Reports Server (NTRS)

    Davies, Merton E.; Colvin, Tim R.; Katayama, Frank Y.; Thomas, Peter C.

    1987-01-01

    The present photogrammetric derivation of control networks for the five Uranus satellites Miranda, Ariel, Umbriel, Titania, and Oberon, on the basis of Voyager 2 images, covers the illuminated southern hemisphere of each satellite and respectively yields 103, 52, 43, 46, and 34 coordinate points. It is found that Titania is ellipsoidal, with 241-, 235-, and 232-km radii.In addition, mean radii are determined to be 579 km for Ariel, 586 km for Umbriel, 790 km for Titania, and 762 km for Oberon. Some of the control points used have been identified on the U.S. Geological Survey maps of these satellites.

  12. A revision of Megalocraerus Lewis, 1902 (Coleoptera, Histeridae: Exosternini)

    PubMed Central

    Caterino, Michael S.; Tishechkin, Alexey K.

    2016-01-01

    Abstract The formely monotypic Neotropical genus Megalocraerus Lewis is revised to include five species, known from southeastern Brazil to Costa Rica: Megalocraerus rubricatus Lewis, Megalocraerus mandibularis sp. n., Megalocraerus chico sp. n., Megalocraerus madrededios sp. n., and Megalocraerus tiputini sp. n. We describe the species, map their distributions, and provide a key for their identification. Their subcylindrical body form and emarginate mesosternum have previously hindered placement to tribe, although their curent assignment to Exosternini now appears well supported by morphological evidence. Nothing is known of the natural history of the species. PMID:26877699

  13. Sensitivity of tomato cultivars to sulfur dioxide

    SciTech Connect

    Howe, T.K.; Woltz, S.S.

    1982-04-01

    The sensitivity of 26 cultivars of tomato (Lycopersicon esculentum Mill.) were compared at 2 concentrations of SO/sub 2/in specially designed exposure greenhouses. Cultivars studied included fresh market, processing, and specialty types. Insensitive and sensitive cultivars were identified by assessment of acute SO/sub 2/-induced foliar necrosis. Cultivars found to be insensitive to SO/sub 2/ included: 'Ace', 'Bonanza', 'Heinz 1350', 'Tarquinia Tondino', and 'VF 145-B 7879'. Cultivars found to be sensitive to SO/sub 2/ included: 'Bellarina', 'Chico III', 'Flora-Dade', 'Red Cherry Large' 'Sub-Arctic Delight', and 'Vetomold. 10 figures, 1 table.

  14. ISHI, MILL CREEK, POLK SPRINGS, AND BUTT MOUNTAIN ROADLESS AREAS, CALIFORNIA.

    USGS Publications Warehouse

    Peterson, Jocelyn A.; Denton, David K.

    1984-01-01

    The Ishi, Mill Creek, Polk Springs, and Butt Mountain Roadless Areas occupy approximately 50 sq mi in an area about 25 mi north of Chico, California, and 25 mi south of Mount Lassen. Mineral surveys indicated little promise for the occurrence of mineral resources in much of the areas. Portions of Deer and Mill Creeks are considered to have probable resource potential for small amounts of gold. The geologic setting precludes the occurrence of energy resources and no other metallic mineral resources were identified.

  15. Dynamics of Mediterranean late Quaternary fluvial activity: An example from the River Ebro (north Iberian Peninsula)

    NASA Astrophysics Data System (ADS)

    Soria-Jáuregui, Ángel; González-Amuchástegui, María José; Mauz, Barbara; Lang, Andreas

    2016-09-01

    Late Pleistocene and Holocene fluvial evolution of the upper River Ebro (Miranda basin, north Spain) is analysed using geomorphological, sedimentological, and optical dating techniques. Maximum regional crustal uplift of 0.98 m/ka approximately helped preserve a suite of terraces in the Miranda basin: 5 river terraces (T1-5) were identified and their formation attributed to MIS 6 (T1), MIS 5d (T2), MIS 4 (T3), MIS 2 (T4), MIS 1 (T5). Alluvium deposited in terraces T1, T2, T3, and T4 is well-sorted, clast-supported gravels; whereas the T5 deposit is exclusively composed of silt. Gravels were deposited during cold and dry periods when reduced vegetation cover on hillslopes increased sediment supply to the trunk river. Silt was deposited in overbank settings under warmer and wetter climate conditions when vegetation cover stabilised hillslopes and restricted sediment supply. It also resulted in lower peak discharge and reduced flow velocities over vegetated floodplains. The chronological sequence of terraces indicates that incision occurred during climatic transitions. We conclude that the upper River Ebro responded to fluctuations in sediment supply and discharge controlled by late Quaternary climate cycles.

  16. The impact cratering record on Triton

    NASA Astrophysics Data System (ADS)

    Strom, Robert G.; Croft, Steven K.; Boyce, Joseph M.

    1990-10-01

    Impact craters on Triton are scarce owing to the relatively recent resurfacing by icy melts. The most heavily cratered surface has a crater density about the same as the lunar maria. The transition diameter from simple to complex craters occurs at a diameter of about 11 kilometers, and the depth-diameter relationship is similar to that of other icy satellites when gravity is taken into account. The crater size-frequency distribution has a differential -3 slope (cumulative -2 slope) and is the same as that for the fresh crater population on Miranda. The most heavily cratered region is on the leading hemisphere in Triton's orbit. Triton may have a leading-trailing asymmetry in its crater population. Based primarily on the similarity of size distributions on Triton and Miranda and the relatively young surface on Triton, the source of Triton's craters is probably comets. The very peculiar size distribution of sharp craters on the 'cantaloupe' terrain and other evidence suggests thay are volcanic explosion craters.

  17. LETTERS AND COMMENTS: Adiabatic process reversibility: microscopic and macroscopic views

    NASA Astrophysics Data System (ADS)

    Anacleto, Joaquim; Pereira, Mário G.

    2009-05-01

    The reversibility of adiabatic processes was recently addressed by two publications. In the first (Miranda 2008 Eur. J. Phys. 29 937-43), an equation was derived relating the initial and final volumes and temperatures for adiabatic expansions of an ideal gas, using a microscopic approach. In that relation the parameter r accounts for the process reversibility, ranging between 0 and 1, which corresponds to the free and reversible expansion, respectively. In the second (Anacleto and Pereira 2009 Eur. J. Phys. 30 177-83), the authors have shown that thermodynamics can effectively and efficiently be used to obtain the general law for adiabatic processes carried out by an ideal gas, including compressions, for which r \\ge 1. The present work integrates and extends the aforementioned studies, providing thus further insights into the analysis of the adiabatic process. It is shown that Miranda's work is wholly valid for compressions. In addition, it is demonstrated that the adiabatic reversibility coefficient given in terms of the piston velocity and the root mean square velocity of the gas particles is equivalent to the macroscopic description, given just by the quotient between surroundings and system pressure values.

  18. On the Long-term Dynamical Evolution of the Main Satellites of Uranus

    NASA Astrophysics Data System (ADS)

    Verheylewegen, Emilie; Noyelles, B.; Karatekin, O.; Lemaître, A.

    2013-05-01

    Abstract (2,250 Maximum Characters): Voyager II mission that explored the Uranian system and its main satellites in 1986, revealed a combination of geophysical and dynamical abnormalities. These abnormalities can be explained as a set by a complete orbital-thermal model: in particular the resurfacing of Miranda combined with its high orbital inclination 4.338°) currently observed could be explained by a capture in the past in a 3:1 mean motion resonance with Umbriel. The dynamical part of the problem has already been studied by several authors 20 years ago (Dermott et al. 1988; Tittemore & Wisdom 1989; Malhotra 1990; Moons & Henrard 1993) and revisited by us with other powerful numerical tools (Verheylewegen et al. 2013, submitted). We have in particular analyzed the different secondary resonances that the system might have encountered. In parallel, we are working on a thermal model using the evolution of the temperature inside the satellite, with radiogenic and tidal heating sources. The analytical expressions of the viscosity and the rigidity allow to compute new tidal parameters at each step of the evolution to inject them in the orbital part of the model. The objective is to show the first results of the combination of the two parts during the evolution through the mean-motion resonance 3:1 between Miranda and Umbriel.

  19. Rapid molecular identification of armored scale insects (Hemiptera: Diaspididae) on Mexican 'Hass' avocado.

    PubMed

    Rugman-Jones, Paul F; Morse, Joseph G; Stouthamer, Richard

    2009-10-01

    'Hass' avocado, Persea americana Mill., fruit imported into California from Mexico are infested with high levels of armored scale insects (Hemiptera: Diaspididae), constituting several species. The paucity and delicate nature of morphological characters traditionally used to diagnose armored scales often require careful preparation of slide-mounted specimens and expert knowledge of the group, for their accurate identification. Here, we present a simple, quick, and accurate means to identify armored scales on Mexican avocados, based on amplification of the internal transcribed spacer two of ribosomal DNA, by using the polymerase chain reaction (PCR). This region seems to show a high level of intraspecific conformity among scale specimens originating from different localities. A suite of species-specific reverse PCR primers are combined in a single reaction, with a universal forward primer, and produce a PCR product of a unique size, that after standard gel electrophoresis, allows the direct diagnosis of six diaspidid species: Abgrallaspis aguacatae Evans, Watson & Miller; Hemiberlesia lataniae (Signoret); Hemiberlesia sp. near latania; Hemiberlesia rapax (Comstock); Acutaspis albopicta (Cockerell); and Pinnaspis strachani (Cooley). Two additional species, Diaspis miranda (Cockerell) and Diaspis sp. near miranda, also are separated from the others by using this method and are subsequently diagnosed by secondary digestion of the PCR product with the restriction endonuclease smaI.

  20. Review of the Southeast Asian millipede genus Antheromorpha Jeekel, 1968 (Diplopoda, Polydesmida, Paradoxosomatidae)

    PubMed Central

    Likhitrakarn, Natdanai; Golovatch, Sergei I.; Panha, Somsak

    2016-01-01

    Abstract The genus Antheromorpha is redefined and shown to comprise 11 valid species: Antheromorpha miranda (Pocock, 1895), Antheromorpha bistriata (Pocock, 1895), Antheromorpha comotti (Pocock, 1895), Antheromorpha festiva (Brölemann, 1896), Antheromorpha harpaga (Attems, 1937), Antheromorpha mediovirgata (Carl, 1941), Antheromorpha minlana (Pocock, 1895), Antheromorpha pardalis (Pocock, 1895), Antheromorpha paviei (Brölemann, 1896), comb. n., Antheromorpha rosea Golovatch, 2013 and Antheromorpha uncinata (Attems, 1931). Three new synonymies are proposed: Antheromorpha bivittata (Pocock, 1895) and Antheromorpha melanopleuris (Pocock, 1895) are synonymized under Antheromorpha miranda (Pocock, 1895), and Antheromorpha orophila (Carl, 1941) under Antheromorpha comotti (Pocock, 1895). Detailed descriptions and illustrations of fresh material from Thailand and Malaysia are given, especially regarding colour patterns which appear to be crucial for accurate species identifications. Two Antheromorpha species proposed by Attems are redescribed, based on type material. The genus is rediagnosed and a key and a distribution map are also provided. At least in Thailand, adult Antheromorpha rosea have been found to occur every year only for one or two weeks in September or October, disappearing thereafter. PMID:27110157

  1. The masses of Uranus and its major satellites from Voyager tracking data and earth-based Uranian satellite data

    NASA Technical Reports Server (NTRS)

    Jacobson, R. A.; Campbell, J. K.; Taylor, A. H.; Synnott, S. P.

    1992-01-01

    Improved values for the masses of the Uranian system and the satellites Ariel, Umbriel, Titania, Oberon, and Miranda are obtained on the basis of an analysis of the Doppler-tracking data and star-satellite imaging from the Voyager 2 spacecraft combined with earth-based astrometric satellite observations. Masses are expressed as the product, the universal gravitational constant times the mass of the body, in units of (cu km/sq s). The satellite masses are (4.4 +/- 0.5) for Miranda, (90.3 +/- 8.0) for Ariel, (78.2 +/- 9.0) for Umbriel, (235.3 +/- 6.0) for Titania, and (201.1 +/- 5.0) for Oberon. Quoted errors are standard errors and are the present assessment of the true rather than the formal errors. The Uranus rotational pole orientation angles and gravity harmonic coefficients were fixed at the values determined by French et al. (1988) from stellar occultations of the Uranian rings observed from both the earth and Voyager 2 and from the occultation of the spacecraft radio signal.

  2. [Not Available].

    PubMed

    Grao-Cruces, Alberto; Loureiro, Nuno; Fernández-Martínez, Antonio; Mota, Jorge

    2016-07-19

    Introducción y objetivos: examinar la asociación del apoyo de los padres y de los amigos con diferentes intensidades de actividad física durante el tiempo libre de adolescentes españoles de ambos sexos.Métodos: un total 352 adolescentes españoles (51.70% chicos; 12-16 años) cumplimentaron el International Physical Activity Questionnarie for Adolescents y un cuestionario validado sobre apoyo social. Se realizaron análisis de regresión linear ajustados por edad.Resultados: el apoyo social de padres y amigos influyó positivamente sobre los niveles de actividad física vigorosa que los adolescentes españoles realizan durante su tiempo libre (β=.226 y β=.285 en chicos y β=.167 y β=.181 en chicas, para el apoyo de padres y amigos respectivamente) y sobre los de intensidad moderada en el caso de las chicas (β=.195 y β=.200, respectivamente).Conclusiones: el apoyo de padres y amigos contribuye a los niveles de actividad física moderada o vigorosa en adolescentes españoles.

  3. [Not Available].

    PubMed

    Grao-Cruces, Alberto; Loureiro, Nuno; Fernández-Martínez, Antonio; Mota, Jorge

    2016-01-01

    Introducción y objetivos: examinar la asociación del apoyo de los padres y de los amigos con diferentes intensidades de actividad física durante el tiempo libre de adolescentes españoles de ambos sexos.Métodos: un total 352 adolescentes españoles (51.70% chicos; 12-16 años) cumplimentaron el International Physical Activity Questionnarie for Adolescents y un cuestionario validado sobre apoyo social. Se realizaron análisis de regresión linear ajustados por edad.Resultados: el apoyo social de padres y amigos influyó positivamente sobre los niveles de actividad física vigorosa que los adolescentes españoles realizan durante su tiempo libre (β=.226 y β=.285 en chicos y β=.167 y β=.181 en chicas, para el apoyo de padres y amigos respectivamente) y sobre los de intensidad moderada en el caso de las chicas (β=.195 y β=.200, respectivamente).Conclusiones: el apoyo de padres y amigos contribuye a los niveles de actividad física moderada o vigorosa en adolescentes españoles. PMID:27571649

  4. In vivo high-resolution magic angle spinning magnetic resonance spectroscopy of Drosophila melanogaster at 14.1 T shows trauma in aging and in innate immune-deficiency is linked to reduced insulin signaling

    PubMed Central

    RIGHI, VALERIA; APIDIANAKIS, YIORGOS; MINTZOPOULOS, DIONYSSIOS; ASTRAKAS, LOUKAS; RAHME, LAURENCE G.; TZIKA, A. ARIA

    2010-01-01

    In vivo magnetic resonance spectroscopy (MRS), a non-destructive biochemical tool for investigating live organisms, has yet to be used in the fruit fly Drosophila melanogaster, a useful model organism for investigating genetics and physiology. We developed and implemented a high-resolution magic-angle-spinning (HRMAS) MRS method to investigate live Drosophila at 14.1 T. We demonstrated, for the first time, the feasibility of using HRMAS MRS for molecular characterization of Drosophila with a conventional MR spectrometer equipped with an HRMAS probe. We showed that the metabolic HRMAS MRS profiles of injured, aged wild-type (wt) flies and of immune deficient (imd) flies were more similar to chico flies mutated at the chico gene in the insulin signaling pathway, which is analogous to insulin receptor substrate 1–4 (IRS1–4) in mammals and less to those of adipokinetic hormone receptor (akhr) mutant flies, which have an obese phenotype. We thus provide evidence for the hypothesis that trauma in aging and in innate immune-deficiency is linked to insulin signaling. This link may explain the mitochondrial dysfunction that accompanies insulin resistance and muscle wasting that occurs in trauma, aging and immune system deficiencies, leading to higher susceptibility to infection. Our approach advances the development of novel in vivo non-destructive research approaches in Drosophila, suggests biomarkers for investigation of biomedical paradigms, and thus may contribute to novel therapeutic development. PMID:20596596

  5. Comparison of an analog direct detection and a micropulse aerosol lidar at 1.5-μm wavelength for wind field observations-with first results over the ocean

    NASA Astrophysics Data System (ADS)

    Mayor, Shane D.; Dérian, Pierre; Mauzey, Christopher F.; Spuler, Scott M.; Ponsardin, Patrick; Pruitt, Jeff; Ramsey, Darrell; Higdon, Noah S.

    2016-01-01

    The performance of two direct-detection atmospheric lidar systems with very different methods of generating and detecting laser radiation is compared as the result of a field experiment held in March 2015, in Chico, California. During the noncontinuous, 11-day test period, in which the systems operated side by side, the micropulse lidar was operated at its maximum pulse repetition frequency (15 kHz) and integrated elastic backscatter over the interpulse period of the analog direct-detection lidar (0.1 s). Operation at the high pulse repetition frequency resulted in second-trip echoes that contaminated portions of the data. The performance of the micropulse lidar varied with background brightness-as expected with a photon-counting receiver-yet showed equal or larger backscatter intensity signal-to-noise ratio throughout the experiment. Examples of wind fields and time series of wind vectors from both systems during the Chico experiment are presented. In addition, scans over the ocean that were collected by the micropulse lidar during a subsequent deployment on the northern California coast are presented. We conclude by reviewing the advantages and disadvantages of each system and make some suggestions to improve the design and performance of future systems.

  6. [Distribution and taxonomy of Pyrgophorus platyrachis (Caenogastropoda: Hydrobiidae) in the Sistema de Maracaibo, Venezuela].

    PubMed

    Nava, Mario; Severeyn, Héctor; Machado, Nakary

    2011-09-01

    The presence of a microgastropod identified as Potamopyrgus sp. was detected previously in the Maracaibo System; nevertheless, a detailed morphological analysis identified this snail in other genera. The objective of this work is to update the distribution and taxonomy of Pyrgophorus platyrachis in the Maracaibo System, Venezuela in samples obtained between 2001 and 2009. The presence of hundreds of individuals of P. platyrachis were observed in the estuary, indeed in the localities of the Gran Eneal lagoon (4 111 snails), Peonías lagoon (229 snails), Punta Capitán Chico (758 snails), San Francisco (2 517 snails), Curarire (240 snails), Apon River mouth (173 snails), Ojeda City (240 snails), Bachaquero (128 snails) and Tomoporo de Agua (385 snails). We performed a taxonomical analysis, and emphasized in ecological aspects, such as the distribution of the species and habitat features, as near vegetation and type of associated sediment. We found three morphotypes of the species, one smooth, another with spiral striations and the other with spines. Smooth morphotype was exclusive of the Gran Eneal lagoon, Peonías lagoon, Punta Capitan Chico and Apon River mouth localities, whereas the other two morphotypes were found together in the remaining localities. According to our detailed anatomical and taxonomical analysis we propose a synonymy between P. platyrachis and the other species described like Pyrgophorus parvulus and Pyrgophorus spinosus.

  7. GAMUT: GPU accelerated microRNA analysis to uncover target genes through CUDA-miRanda

    PubMed Central

    2014-01-01

    Background Non-coding sequences such as microRNAs have important roles in disease processes. Computational microRNA target identification (CMTI) is becoming increasingly important since traditional experimental methods for target identification pose many difficulties. These methods are time-consuming, costly, and often need guidance from computational methods to narrow down candidate genes anyway. However, most CMTI methods are computationally demanding, since they need to handle not only several million query microRNA and reference RNA pairs, but also several million nucleotide comparisons within each given pair. Thus, the need to perform microRNA identification at such large scale has increased the demand for parallel computing. Methods Although most CMTI programs (e.g., the miRanda algorithm) are based on a modified Smith-Waterman (SW) algorithm, the existing parallel SW implementations (e.g., CUDASW++ 2.0/3.0, SWIPE) are unable to meet this demand in CMTI tasks. We present CUDA-miRanda, a fast microRNA target identification algorithm that takes advantage of massively parallel computing on Graphics Processing Units (GPU) using NVIDIA's Compute Unified Device Architecture (CUDA). CUDA-miRanda specifically focuses on the local alignment of short (i.e., ≤ 32 nucleotides) sequences against longer reference sequences (e.g., 20K nucleotides). Moreover, the proposed algorithm is able to report multiple alignments (up to 191 top scores) and the corresponding traceback sequences for any given (query sequence, reference sequence) pair. Results Speeds over 5.36 Giga Cell Updates Per Second (GCUPs) are achieved on a server with 4 NVIDIA Tesla M2090 GPUs. Compared to the original miRanda algorithm, which is evaluated on an Intel Xeon E5620@2.4 GHz CPU, the experimental results show up to 166 times performance gains in terms of execution time. In addition, we have verified that the exact same targets were predicted in both CUDA-miRanda and the original miRanda

  8. Triton's cratering record and its time of capture

    NASA Technical Reports Server (NTRS)

    Strom, R. G.; Croft, S. K.

    1993-01-01

    Recent impact crater counts on the Voyager 2 high resolution images of Triton have resulted in a more accurate crater size/frequency distribution down to about 3 km diameter. These counts reveal a size/frequency distribution characterized by a differential -4 slope. This is consistent with the observation that there are no craters larger than 27 km diameter on the 20 percent of Triton viewed at resolutions capable of detecting them. A -4 slope is deficient in large craters and at the very low crater density on Triton no craters larger than about 30 km are expected on just 20 percent of the satellite. The Triton size distribution is significantly different from the differential -3 slope of the fresh crater population on Miranda, but both show leading/trailing asymmetries. Since Miranda is in prograde orbit this crater population is probably due to objects in heliocentric orbit, i.e., comets. If this crater population is due to comets, then the significantly different crater population on Triton is probably due to some other population of impacting objects. The most likely origin of these objects is planetesimals in planetocentric orbits. Because Triton is in retrograde orbit, objects in prograde planetocentric orbits will also produce a leading/trailing asymmetry. If the Triton craters are largely the result of objects in planetocentric orbit, then where are the comet craters that should be there if they have a differential -3 distribution function as inferred from the Miranda fresh crater population? The most likely answer is that they are there, but at such a low density that they can not be distinguished from the planetocentric population. An upper bound on this density can be estimated by determining the density of a crater population with a differential -3 slope where no craters larger than 27 km would be expected on the 20 percent of Triton viewed by Voyager at resolutions sufficient to detect them. This density is at the density of the largest crater. At this

  9. Annual Continuation And Progress Report For Low-Energy Nuclear Physics Research At Lawrence Livermore National Laboratory

    SciTech Connect

    Scielzo, N. D.; Wu, C.

    2015-10-27

    (I)In this project, the Beta-­decay Paul Trap, an open-­geometry RFQ ion trap that can be instrumented with sophisticated radiation detection arrays, is used for precision β-­decay studies. Measurements of β-­decay angular correlations, which are sensitive to exotic particles and other phenomena beyond the Standard Model (SM) of particle physics that may occur at the TeV-­energy scale, are being performed by taking advantage of the favorable properties of the mirror 8Li and 8B β± decays and the benefits afforded by using trapped ions. By detecting the β and two α particles emitted in these decays, the complete kinematics can be reconstructed. This allows a simultaneous measurement of the β-­n, β-­n-­α, and β-α correlations and a determination of the neutrino energy and momentum event by event. In addition, the 8B neutrino spectrum, of great interest in solar neutrino oscillation studies, can be determined in a new way. Beta-­delayed neutron spectroscopy is also being performed on neutron-­rich isotopes by studying the β-­decay recoil ions that emerge from the trap with high efficiency, good energy resolution, and practically no backgrounds. This novel technique is being used to study isotopes of mass-­number A~130 in the vicinity of the N=82 neutron magic number to help understand the rapid neutron-­capture process (r-­process) that creates many of the heavy isotopes observed in the cosmos. (II)A year-long CHICO2 campaign at ANL/ATLAS together with GRETINA included a total of 10 experiments, seven with the radioactive beams from CARIBU and three with stable beams, with 82 researchers involved from 27 institutions worldwide. CHICO2 performed flawlessly during this long campaign with achieved position resolution matching to that of GRETINA, which greatly enhances the sensitivity in the study of nuclear γ-­ray spectroscopy. This can be demonstrated in our results on 144Ba and 146

  10. Commentary: ethics-related implications and neurobiological correlates of false confessions in juveniles.

    PubMed

    Weinstock, Robert; Thompson, Christopher

    2009-01-01

    Forensic psychiatrists typically have no role in the process of obtaining confessions. They may believe, as do others, that a confession removes any doubt about guilt, but false confessions are not rare. Like the police, forensic psychiatrists can inadvertently elicit or solidify a false confession through the evaluation process by presuming guilt and forgetting that they are ethically obligated to strive for objectivity. Adolescents are at high risk of making false confessions because of their immaturity and vulnerability, extrinsic factors (such as interrogation techniques), and the dynamic interplay between them. Adolescent immaturity can have a direct bearing on a juvenile's appreciation of his Miranda rights and his vulnerability to making a confession (or a false confession) when exposed to coercive interrogation techniques designed for adults. Adolescents need special protection from such interrogation techniques. Forensic psychiatrists have an obligation to be alert to the potential for false confessions and to avoid compounding the problem by presuming guilt. PMID:19767499

  11. A United States forensic sample for the Gudjonsson Suggestibility Scales.

    PubMed

    Frumkin, I Bruce; Lally, Stephen J; Sexton, James E

    2012-01-01

    The Gudjonsson Suggestibility Scales (GSS) is a valuable test to use as part of a comprehensive assessment of psychological and interrogative factors relevant to a defendant's vulnerability to giving a false or involuntary confession. One limitation of the test is that the manual only provides information for samples from Iceland and Great Britain. This report describes the results of 334 individuals in the United States, who were administered the tests as part of an evaluation to assess confession-related issues in a forensic context (i.e., capacity to waive Miranda rights or vulnerability in providing a false or involuntary confession). This forensic sample includes both juveniles and adults. Results are consistent with Gudjonsson's British and Icelandic samples, in which the Yield 1 score is more affected by intellectual and cognitive variables, but Shift and, to a lesser extent, Yield 2 scores are more related to emotional and personality characteristics. PMID:23001717

  12. Police-induced confessions: risk factors and recommendations.

    PubMed

    Kassin, Saul M; Drizin, Steven A; Grisso, Thomas; Gudjonsson, Gisli H; Leo, Richard A; Redlich, Allison D

    2010-02-01

    Recent DNA exonerations have shed light on the problem that people sometimes confess to crimes they did not commit. Drawing on police practices, laws concerning the admissibility of confession evidence, core principles of psychology, and forensic studies involving multiple methodologies, this White Paper summarizes what is known about police-induced confessions. In this review, we identify suspect characteristics (e.g., adolescence; intellectual disability; mental illness; and certain personality traits), interrogation tactics (e.g., excessive interrogation time; presentations of false evidence; and minimization), and the phenomenology of innocence (e.g., the tendency to waive Miranda rights) that influence confessions as well as their effects on judges and juries. This article concludes with a strong recommendation for the mandatory electronic recording of interrogations and considers other possibilities for the reform of interrogation practices and the protection of vulnerable suspect populations. PMID:19603261

  13. Sex-specific adaptation drives early sex chromosome evolution in Drosophila.

    PubMed

    Zhou, Qi; Bachtrog, Doris

    2012-07-20

    Most species' sex chromosomes are derived from ancient autosomes and show few signatures of their origins. We studied the sex chromosomes of Drosophila miranda, where a neo-Y chromosome originated only approximately 1 million years ago. Whole-genome and transcriptome analysis reveals massive degeneration of the neo-Y, that male-beneficial genes on the neo-Y are more likely to undergo accelerated protein evolution, and that neo-Y genes evolve biased expression toward male-specific tissues--the shrinking gene content of the neo-Y becomes masculinized. In contrast, although older X chromosomes show a paucity of genes expressed in male tissues, neo-X genes highly expressed in male-specific tissues undergo increased rates of protein evolution if haploid in males. Thus, the response to sex-specific selection can shift at different stages of X differentiation, resulting in masculinization or demasculinization of the X-chromosomal gene content.

  14. [Diseases of hunger: Mexico 1915].

    PubMed

    Viesca-Treviño, Carlos

    2016-01-01

    1915 was a terrible year for Mexican people. After dictator Huerta’s fall, fratricide fighting involved diverse revolutionary groups. Mexico City was assaulted and occupied successively by different armies and, following the war came hunger and epidemics. Many people died from starvation, 30 to 40 every day in July and August. In this paper I review the medical texts written by physicians involved in the treatment of these patients. The main were E. Landa, M. Torroella and F. de P. Miranda and all of them concurred in the observation of important edema increasing to become generalized, important anemia and a watery aspect of the blood, facts that determine the term edema employed to characterize this disease. PMID:27382846

  15. Rights of the mentally ill: the gulf between theory and reality.

    PubMed

    Meisel, A

    1975-06-01

    Within the last few years several lawsuits have significantly increased both the procedural and the substantive rights of mental patients; among them are Lessard v. Schmidt, in which the court held that persons facing involuntary civil commitment are entiltled to dueprocess safeguards, and Wyatt v. Stickney and Donaldson v. O'Connor, concerned with the right ot adequate treatment. The author draws on the problems of implementing the landmark decree of Miranda v. Arizona, guaranteeing the rights of criminal suspects, in discussing the difficulties of translating rights promulgated in the courts into reality. He believes that enofrcement of patients' rights depends not on the law alone but also on the sensitivity and good faith of mental health workers.

  16. Implementation of a fast time-domain processor for FMCW Synthetic Aperture Radar data

    NASA Astrophysics Data System (ADS)

    Frioud, Max; Wellig, Peter; Stanko, Stephan; Meier, Erich

    2015-10-01

    For the purpose of getting sensitive information relevant to civil or military security, high-resolution airborne Synthetic Aperture Radar (SAR) provides the possibility to organize missions at short notice regardless of the daylight and of the weather conditions. The use of compact millimeter-wave FMCW SAR systems allows reaching these goals more safely and at lower cost using unmanned lightweight platforms. As a counterpart these platforms are relatively unstable, making the data-processing more difficult. In order to reach optimum focusing quality also in unfavorable flight conditions or for highly non-linear tracks we developed a fast Time-Domain Processor that relies on parallelization using the GPU resources. A production areal processing rate as high as 6 km2/h using 20 cm ground pixel spacing on a single PC station was achieved. The processing quality and efficiency is demonstrated using real data from the MIRANDA35 Ka-band SAR system.

  17. Cognitive dissonance and the perception of natural environments.

    PubMed

    Balcetis, Emily; Dunning, David

    2007-10-01

    Two studies demonstrated that the motivation to resolve cognitive dissonance affects the visual perception of physical environments. In Study 1, subjects crossed a campus quadrangle wearing a costume reminiscent of Carmen Miranda. In Study 2, subjects pushed themselves up a hill while kneeling on a skateboard. Subjects performed either task under a high-choice, low-choice, or control condition. Subjects in the high-choice conditions, presumably to resolve dissonance, perceived the environment to be less aversive than did subjects in the low-choice and control conditions, seeing a shorter distance to travel (Study 1) and a shallower slope to climb (Study 2). These studies suggest that the impact of motivational states extends from social judgment down into perceptual processes.

  18. VizieR Online Data Catalog: Astrometry of the main satellites of Uranus (Camargo+, 2015)

    NASA Astrophysics Data System (ADS)

    Camargo, J. I. B.; Magalhaes, F. P.; Assafin, M.; Braga-Ribas, F.; Dias-Oliveira, A.; Benedetti-Rossi, G.; Gomes-Junior, A. R.; Andrei, A. H.; da Silva Neto, D. N.

    2015-09-01

    Positions of the main satellites of Uranus - Miranda, Ariel, Umbriel, Titania, and Oberon, are presented. Positions of Uranus, as derived from those of the satellites, are also presented. Note that these positions of Uranus are not observed ones. Also, as requested by the editor of A&A, the X,Y coordinates on the CCD of the observed satellites and reference stars are given. To extend the time span of our observations to older epochs, positions from Veiga et al. (2003AJ....125.2714V, hereafter V03) for the main satellites are provided. In the same way as mentioned above, positions of Uranus were determined. Note that no X,Y coordinates are given to the positions from V03 because the raw data was unfortunately lost. (18 data files).

  19. The Orbits of the Inner Uranian Satellites

    NASA Astrophysics Data System (ADS)

    Brozovic, Marina; Jacobson, R. A.

    2009-05-01

    We report on the numerically integrated orbits for the thirteen inner Uranian satellites. Our dataset includes Voyager imaging data as well as HST and Earth-based astrometric data. The observations span time period from 1985 to 2003. Our model of the inner moons' orbits accounts for the equatorial bulge of Uranus, the perturbations from the external bodies and the perturbations from the large moons of Uranus (Miranda, Umbriel, Ariel, Oberon, and Titania). The inner satellites were initially considered massless, but we found that this assumption may need to be revised in order to fine-tune the system's dynamics and obtain the orbital solutions with adequate residuals.The results are given in terms of state vectors,post-fit residuals and mean orbital elements.

  20. The advertisement call of Bokermannohyla flavopicta Leite, Pezzuti & Garcia, 2012 (Anura: Hylidae) from the mountains of Chapada Diamantina, Bahia, Brazil.

    PubMed

    Rocha, Pedro Carvalho; Thompson, Julia Resende; Leite, Felipe Sá Fortes; Garcia, Paulo Christiano De Anchietta

    2016-01-01

    Bokermannohyla Faivovich, Haddad, Garcia, Frost, Campbell & Wheeler (2005) is a Brazilian treefrog genus currently composed of 32 species (Brandão et al. 2012; Leite et al. 2012; Frost 2015). The genus comprehends four, putatively monophyletic, species groups: B. circumdata, B. claresignata, B. martinsi, and B. pseudopseudis (sensu Faivovich et al. 2005). The B. pseudopseudis group includes nine species: B. alvarengai (Bokermann 1956), B. flavopicta Leite et al. 2012, B. ibitiguara (Cardoso 1983), B. itapoty Lugli & Haddad 2006a, B. oxente Lugli & Haddad 2006b, B. pseudopseudis (Miranda-Ribeiro 1937), B. sagarana Leite et al. 2011, B. sapiranga Brandão et al. 2012, and B. saxicola (Bokermann 1964). PMID:27395500

  1. [Wood anatomy and uses of 7 tropical tree species from Mexico].

    PubMed

    Rebollar, S; Quintanar, A

    2000-01-01

    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, simple perforation plates, numerous and small rays; libriform fibres are common, as well as ergastic material in gum forms, calcium carbonate and silica crystals. These characteristics explain aesthetical, weight, hardness and resistance (to mechanical and biological damage) characters that fit traditional use by the Maya.

  2. [Diseases of hunger: Mexico 1915].

    PubMed

    Viesca-Treviño, Carlos

    2016-01-01

    1915 was a terrible year for Mexican people. After dictator Huerta’s fall, fratricide fighting involved diverse revolutionary groups. Mexico City was assaulted and occupied successively by different armies and, following the war came hunger and epidemics. Many people died from starvation, 30 to 40 every day in July and August. In this paper I review the medical texts written by physicians involved in the treatment of these patients. The main were E. Landa, M. Torroella and F. de P. Miranda and all of them concurred in the observation of important edema increasing to become generalized, important anemia and a watery aspect of the blood, facts that determine the term edema employed to characterize this disease.

  3. Life cycle of Cyclestheria hislopi (Baird, 1859) (Crustacea, Branchiopoda).

    PubMed

    Yashima, M N; Baldochi, A; Rocha, O

    2011-05-01

    The Conchostraca (clam shrimps) are a group of microcrustaceans found in freshwater habitats. They inhabit the benthos, yet many can swim actively and are often associated with macrophytes. They are filter-feeders, deriving their food from suspended particles or solids stirred up from the bottom. In Brazil, five species have been recorded and the life cycle of one of these, Cyclestheria hislopi (Baird, 1859) was investigated in this study. Specimens were collected from fish-farming tanks in upstate São Paulo and from the floodplain of the Miranda River, in the Mato Grosso swamplands of center-west, Brazil. We determined the following variables: post-embryonic development, duration of life cycle (longevity), mean period between broods, duration of instars and individual growth. Taxonomic features of the Cyclestheria sp. specimens from Mato Grosso were also assessed to check the possibility that they belonged to another species of the same genus or a separate ecotype of C. hislopi.

  4. Masses of the satellites of Uranus

    NASA Technical Reports Server (NTRS)

    Dermott, S. F.; Nicholson, P.D.

    1986-01-01

    A marked dichotomy in the density distribution of the Uranian satellites has been observed. The densities of Ariel and Umbriel are similar to those of the inner satellites of Saturn, and are consistent with a composition of 40 percent rock and 60 percent water ice, while Titania and Oberon appears to have much higher densities. It is argued here that the problem posed by this density distribution arises from a misunderstanding of the orbital dynamics and may be imaginary. It is also shown that the observed eccentricities of the inner satellites, Ariel and Miranda, may be partly forced by the outer satellites, and that these forced eccentricities may be maintained despite strong tidal damping.

  5. Quantitative analysis of the Dermott-Gold theory for Uranus's rings

    NASA Technical Reports Server (NTRS)

    Aksnes, K.

    1977-01-01

    A summary is presented of an investigation which supplements the largely qualitative analysis conducted by Dermott and Gold (1977). Dermott and Gold have attempted to explain the locations of Uranus's rings in terms of resonances between ring particles and pairs of satellites. An equation of motion, analogous to that of a pendulum, is derived, taking into account a study by Wilkens (1933) of possible three-body resonances involving one minor and two major planets. Dermott and Gold had concluded that the observed pattern is probably due primarily to the effect of Ariel-Titania and Ariel-Oberon pairs. However, on the basis of the values derived in the reported investigation it is seen that Miranda plays the key role rather than Ariel, in spite of the small mass of the former. It is concluded that a decisive test of the Dermott-Gold theory has to await further observational details concerning the Uranus's rings.

  6. Adolescence: booze, brains, and behavior.

    PubMed

    Monti, Peter M; Miranda, Robert; Nixon, Kimberly; Sher, Kenneth J; Swartzwelder, H Scott; Tapert, Susan F; White, Aaron; Crews, Fulton T

    2005-02-01

    This article represents the proceedings of a symposium at the 2004 Research Society on Alcoholism meeting in Vancouver, British Columbia, Canada, organized and chaired by Peter M. Monti and Fulton T. Crews. The presentations and presenters were (1) Introduction, by Peter M. Monti; (2) Adolescent Binge Drinking Causes Life-Long Changes in Brain, by Fulton T. Crews and Kim Nixon; (3) Functional Neuroimaging Studies in Human Adolescent Drinkers, by Susan F. Tapert; (4) Abnormal Emotional Reactivity as a Risk Factor for Alcoholism, by Robert Miranda, Jr.; (5) Alcohol-Induced Memory Impairments, Including Blackouts, and the Changing Adolescent Brain, by Aaron M. White and H. Scott Swartzwelder; and (6) Discussion, by Kenneth Sher. PMID:15714044

  7. Physical Properties of the Uranian Satellites

    NASA Technical Reports Server (NTRS)

    Brown, R. H.

    1984-01-01

    Recent work on the satellites of Uranus revealed many of their basic physical properties. Radiometric measurements showed that the Ariel, Umbriel, Titania and Oberon have diameters which range from 1630 to 1110 km and albedos which range from 0.30 to 0.18. Spectrophotometric observations of Miranda suggest that it may have the highest albedo of the known Uranian satellites and a diameter of about 500 km. Near-infrared measurements show that Ariel, Titania and Oberon have the largest known opposition surges. All five known satellites of Uranus have surfaces which are composed of water ice contaminated with small amounts of dark material. The dark material on the surfaces of Ariel, Umbriel, Titania and Oberon is spectrally bland and has spectral similarities to carbon black, charcoal, carbonaceous chondritic material and other dark, spectrally neutral materials. Recent density determinations suggest that there may be large density differences among Ariel, Umbriel, Titania and Oberon, with density increasing with distance from Uranus.

  8. Physical properties of the Uranian satellites

    SciTech Connect

    Brown, R.H.

    1984-10-01

    Recent work on the satellites of Uranus revealed many of their basic physical properties. Radiometric measurements showed that the Ariel, Umbriel, Titania and Oberon have diameters which range from 1630 to 1110 km and albedos which range from 0.30 to 0.18. Spectrophotometric observations of Miranda suggest that it may have the highest albedo of the known Uranian satellites and a diameter of about 500 km. Near-infrared measurements show that Ariel, Titania and Oberon have the largest known opposition surges. All five known satellites of Uranus have surfaces which are composed of water ice contaminated with small amounts of dark material. The dark material on the surfaces of Ariel, Umbriel, Titania and Oberon is spectrally bland and has spectral similarities to carbon black, charcoal, carbonaceous chondritic material and other dark, spectrally neutral materials. Recent density determinations suggest that there may be large density differences among Ariel, Umbriel, Titania and Oberon, with density increasing with distance from Uranus.

  9. Solid-state ice volcanism on the satellites of uranus.

    PubMed

    Jankowski, D G; Squyres, S W

    1988-09-01

    Voyager images of the uranian satellites Ariel and Miranda show flow features with morphologies indicating that ice has been extruded to the satellites' surfaces in the solid state. These images provide the first observational evidence for solid-state ice volcanism in the solar system. Topographic profiles have been measured across a number of flow features on Ariel. With a simple model of extrusion, spreading, and cooling of a viscous flow, the initial viscosity of the flow material is found to have been no more than about 10(16) poise, far lower than expected for H(2)O ice at the ambient surface temperatures in the uranian system. Sharply reduced viscosities may have resulted from incorporation of ices like NH(3) or CH(4) in the uranian satellites.

  10. Uranus and Neptune: The distant giants

    SciTech Connect

    Burgess, E.

    1988-01-01

    The history of observations and probe missions to the outer planets is reviewed, and major results are summarized, in an overview for general readers. Consideration is given to Voyager images of the Uranian satellite Miranda; the ring system of Uranus; zonal bands on Jupiter, Saturn, and Uranus; the Voyager instruments, mission profile, and ground support system; Saturn and its satellites; the discovery of Uranus by Herschel; the surface and atmosphere of Uranus; and theoretical models of the Uranian interior structure. Also discussed are the discovery of Neptune by Galle and d'Arrest, ground-based knowledge of Neptune and its satellites, the discovery of Pluto, and the possible existence of additional planets. Extensive diagrams, drawings, and photographs are provided.

  11. Debris ingestion by the Antillean Manatee (Trichechus manatus manatus).

    PubMed

    Attademo, Fernanda Loffler Niemeyer; Balensiefer, Deisi Cristiane; Freire, Augusto Carlos da Bôaviagem; de Sousa, Glaucia Pereira; da Cunha, Fábio Adonis Gouveia Carneiro; Luna, Fábia de Oliveira

    2015-12-15

    The Antillean manatee inhabits coastal regions of North and Northeastern Brazil and currently is considered an endangered species in the country. Aiming to gather information for the development of public policies focusing on the conservation of manatees, the National Center for Research and Conservation of Aquatic Mammals of the Chico Mendes Institute for Biodiversity has been rescuing, rehabilitating and releasing these mammals since the 1980s. Over the last 36 years, 40 manatees were released by the CMA/ICMBio and four of them were rescued again due to debris ingestion. Two of these manatees died and the other two were taken back into captivity for a new rehabilitation process. The four mammals had confirmed diagnosis of plastic debris ingestion. These findings demonstrate that the environment where the manatees live after being released had a significant amount of garbage which may hinder the success of the species conservation in Brazil.

  12. [The historical environment from which Social Service emerged].

    PubMed

    Ramírez López, Celia

    2012-01-01

    The historic background in which Social Service appeared dates back to the time when L. Cárdenas (1934-1940) was president of Mexico. In 1935, the reaction of the University to the reformation of article 3 was considered as an antirevolutionary behavior and was seen as opposite to the State's education project. Our history begins in this scenario. During L. Chico Goerne's term, the University signs a new agreement with the Government in which, among other things, the Social Service as a mandatory requirement to obtain a university degree is established. Thus, the mandatory Social Service organized by G. Baz, director of the Facultad de Medicina, who reinforced it as the University rector. Since the establishment of the Social Service, the University did not have to fight for financial support and also restored its prestige and social usefulness before the government that used to exclude the University from its project.

  13. Micronucleus test in fishes as indicators of environmental quality in subestuaries of the Río de la Plata (Uruguay).

    PubMed

    Gutiérrez, Juan Manuel; Villar, Silvia; Acuña Plavan, Alicia

    2015-02-28

    Genotoxic agents may exert damage that may be active through following generations. Micronuclei are cytoplasmic chromatin masses outside the main cell nucleus, indicators of chromosomal damage. This study applied micronuclei test to evaluate genetic damage of fish in three breeding and nursery areas of commercially important fishes exposed to differing degrees of anthropogenic impact: Pando, Solís Chico and Solís Grande sub-estuaries. The micronuclei test revealed differences in the presence and concentrations of genotoxic components in these sub-estuaries. Fish in the urban and industrialized Pando sub-estuary presented the highest percentages of micronuclei. The absence of seasonal changes in micronuclei in Pando fish could be explained by physical characteristics of the sub-estuary and by regional weather conditions. Odontesthes argentinensis (Valenciennes, 1835) was the species most susceptible to genotoxic components. It is recommended the use of a battery of biomarkers to better explain the health of organisms in that important nursery area.

  14. [The height target prediction by the Tanner method infra evaluates the final height in youths from the rural area of South East Spain].

    PubMed

    Ríos, Rafael; Bosch, Vicente; Santonja, Fernando; López, José Manuel; Garaulet, Marta

    2014-10-16

    Introducción: Conocer la talla final de un individuo antes de finalizar el crecimiento presenta utilidad clínica para el seguimiento de la salud infantil. Objetivo: Calcular la talla diana de una población rural del sudeste de España y comparar con la talla final alcanzada. Métodos: Fueron incluidos 50 jóvenes de 18 a 22 años (44% hombres) y 100 progenitores. La selección de los jóvenes se realizó en 2 fases: 1. Estudio retrospectivo a partir de historias clínicas. 2. Estudio prospectivo: reclutamiento y determinaciones antropométricas. Se calculó talla diana y el desvío de talla. Resultados: La talla final de los chicos fue de 4,44 cm superior a la talla diana (p.

  15. Thermoelectric Devices Advance Thermal Management

    NASA Technical Reports Server (NTRS)

    2007-01-01

    Thermoelectric (TE) devices heat, cool, and generate electricity when a temperature differential is provided between the two module faces. In cooperation with NASA, Chico, California-based United States Thermoelectric Consortium Inc. (USTC) built a gas emissions analyzer (GEA) for combustion research. The GEA precipitated hydrocarbon particles, preventing contamination that would hinder precise rocket fuel analysis. The USTC research and design team uses patent-pending dimple, pin-fin, microchannel and microjet structures to develop and design heat dissipation devices on the mini-scale level, which not only guarantee high performance of products, but also scale device size from 1 centimeter to 10 centimeters. USTC continues to integrate the benefits of TE devices in its current line of thermal management solutions and has found the accessibility of NASA technical research to be a valuable, sustainable resource that has continued to positively influence its product design and manufacturing

  16. [Law framework of the Social Service].

    PubMed

    Mazón Ramírez, Juan José

    2012-01-01

    November 22, 1910. During the celebrations of the first one-hundred anniversary of Mexico's Independence War, the solemn reopening of the Universidad Nacional de México takes place. July 22, 1937. Mexico's president general L. Cárdenas and the rector of the Universidad Nacional Autónoma de México, L. Chico Goerne, established an agreement by which the University would extend its function and complete its field of activity through teaching, research, and cultural services. Seventy-five years after the start of the Social Service, its regulations must be reformed to have a better law framework for his important activity. Hence, it is necessary to create a new National System of Social Service or a National Commission of Social Service which, based on general, uniform, equal and fair principles, coordinates, supervises, promotes, and structures students' Social Service for the benefit of the society and the State.

  17. Debris ingestion by the Antillean Manatee (Trichechus manatus manatus).

    PubMed

    Attademo, Fernanda Loffler Niemeyer; Balensiefer, Deisi Cristiane; Freire, Augusto Carlos da Bôaviagem; de Sousa, Glaucia Pereira; da Cunha, Fábio Adonis Gouveia Carneiro; Luna, Fábia de Oliveira

    2015-12-15

    The Antillean manatee inhabits coastal regions of North and Northeastern Brazil and currently is considered an endangered species in the country. Aiming to gather information for the development of public policies focusing on the conservation of manatees, the National Center for Research and Conservation of Aquatic Mammals of the Chico Mendes Institute for Biodiversity has been rescuing, rehabilitating and releasing these mammals since the 1980s. Over the last 36 years, 40 manatees were released by the CMA/ICMBio and four of them were rescued again due to debris ingestion. Two of these manatees died and the other two were taken back into captivity for a new rehabilitation process. The four mammals had confirmed diagnosis of plastic debris ingestion. These findings demonstrate that the environment where the manatees live after being released had a significant amount of garbage which may hinder the success of the species conservation in Brazil. PMID:26431561

  18. Recombining without Hotspots: A Comprehensive Evolutionary Portrait of Recombination in Two Closely Related Species of Drosophila.

    PubMed

    Smukowski Heil, Caiti S; Ellison, Chris; Dubin, Matthew; Noor, Mohamed A F

    2015-10-01

    Meiotic recombination rate varies across the genome within and between individuals, populations, and species in virtually all taxa studied. In almost every species, this variation takes the form of discrete recombination hotspots, determined in some mammals by a protein called PRDM9. Hotspots and their determinants have a profound effect on the genomic landscape, and share certain features that extend across the tree of life. Drosophila, in contrast, are anomalous in their absence of hotspots, PRDM9, and other species-specific differences in the determination of recombination. To better understand the evolution of meiosis and general patterns of recombination across diverse taxa, we present a truly comprehensive portrait of recombination across time, combining recently published cross-based contemporary recombination estimates from each of two sister species with newly obtained linkage-disequilibrium-based historic estimates of recombination from both of these species. Using Drosophila pseudoobscura and Drosophila miranda as a model system, we compare recombination rate between species at multiple scales, and we suggest that Drosophila replicate the pattern seen in human-chimpanzee in which recombination rate is conserved at broad scales. We also find evidence of a species-wide recombination modifier(s), resulting in both a present and historic genome-wide elevation of recombination rates in D. miranda, and identify broad scale effects on recombination from the presence of an inversion. Finally, we reveal an unprecedented view of the distribution of recombination in D. pseudoobscura, illustrating patterns of linked selection and where recombination is taking place. Overall, by combining these estimation approaches, we highlight key similarities and differences in recombination between Drosophila and other organisms.

  19. Surname frequency and the isonymy structure of Venezuela.

    PubMed

    Rodríguez-Larralde, Alvaro; Morales, Jorge; Barrai, Italo

    2000-05-01

    Isonymy in Venezuela was studied analyzing the surnames of 3.9 million adults 40 years and older, selected from the register of electors updated in 1991. The electors were not differentiated by sex and represented all 22 states of Venezuela and its Federal District. The states of Nueva Esparta, an island, and Mérida, in the Venezuelan Andes, have the highest coefficients of microdifferentiation (R(ST)) and of inbreeding due to random isonymy. The states of Miranda, Aragua, Carabobo, and the Federal District, which includes the capital, Caracas, or are very close to it, had the lowest R(ST) values. The weighted averages of Fisher's alpha, a measure of surname abundance, varied by state from 43 in Nueva Esparta to 226 in Miranda, with a value of 210 for the entire country, much smaller than those observed in Switzerland, Germany, or Italy (2,396, 2,855, and 5,855, respectively). The fact that 32% of the total Venezuelan sample has only 40 surnames easily accounts for this small alpha. The correlation between the Euclidean distance and the log of geographic distance between the capital cities of states in km is high and significant (r = 0.78). The dendrogram built with the Euclidean distance matrix indicates the presence of three main clusters. One is formed by 10 states located in the western-central part of the country. The states of Zulia and Falcón join this cluster at a distance of 0.54 Euclidean units. A second cluster is formed by Barinas and the three Andean states. After combining these two, a third cluster joins them, formed by six Eastern states. Finally, the state of Amazonas enters the dendrogram at a distance of 0.66 units. Am. J. Hum. Biol. 12:352-362, 2000. Copyright 2000 Wiley-Liss, Inc. PMID:11534025

  20. Voyager 2 in the Uranian system: Imaging science results

    USGS Publications Warehouse

    Smith, B.A.; Soderblom, L.A.; Beebe, R.; Bliss, D.; Boyce, J.M.; Brahic, A.; Briggs, G.A.; Brown, R.H.; Collins, S.A.; Cook, A.F.; Croft, S.K.; Cuzzi, J.N.; Danielson, G.E.; Davies, M.E.; Dowling, T.E.; Godfrey, D.; Hansen, C.J.; Harris, M. Camille; Hunt, G.E.; Ingersoll, A.P.; Johnson, T.V.; Krauss, R.J.; Masursky, H.; Morrison, D.; Owen, editors, Timothy W.; Plescia, J.B.; Pollack, James B.; Porco, C.C.; Rages, K.; Sagan, C.; Shoemaker, E.M.; Sromovsky, L.A.; Stoker, C.; Strom, R.G.; Suomi, V.E.; Synnott, S.P.; Terrile, R.J.; Thomas, P.; Thompson, W.R.; Veverka, J.

    1986-01-01

    Voyager 2 images of the southern hemisphere of Uranus indicate that submicrometersize haze particles and particles of a methane condensation cloud produce faint patterns in the atmosphere. The alignment of the cloud bands is similar to that of bands on Jupiter and Saturn, but the zonal winds are nearly opposite. At mid-latitudes (-70?? to -27??), where winds were measured, the atmosphere rotates faster than the magnetic field; however, the rotation rate of the atmosphere decreases toward the equator, so that the two probably corotate at about -20??. Voyager images confirm the extremely low albedo of the ring particles. High phase angle images reveal on the order of 10 2 new ringlike features of very low optical depth and relatively high dust abundance interspersed within the main rings, as well as a broad, diffuse, low optical depth ring just inside the main ring system. Nine of the newly discovered small satellites (40 to 165 kilometers in diameter) orbit between the rings and Miranda; the tenth is within the ring system. Two of these small objects may gravitationally confine the ?? ring. Oberon and Umbriel have heavily cratered surfaces resembling the ancient cratered highlands of Earth's moon, although Umbriel is almost completely covered with uniform dark material, which perhaps indicates some ongoing process. Titania and Ariel show crater populations different from those on Oberon and Umbriel; these were probably generated by collisions with debris confined to their orbits. Titania and Ariel also show many extensional fault systems; Ariel shows strong evidence for the presence of extrusive material. About half of Miranda's surface is relatively bland, old, cratered terrain. The remainder comprises three large regions of younger terrain, each rectangular to ovoid in plan, that display complex sets of parallel and intersecting scarps and ridges as well as numerous outcrops of bright and dark materials, perhaps suggesting some exotic composition.

  1. Evaluating the psycholegal abilities of young offenders with fetal alcohol spectrum disorder.

    PubMed

    McLachlan, Kaitlyn; Roesch, Ronald; Viljoen, Jodi L; Douglas, Kevin S

    2014-02-01

    Individuals with a diagnosis of fetal alcohol spectrum disorder (FASD) experience a range of physical, cognitive, and behavioral deficits thought to interfere with their ability to competently navigate the arrest, interrogation, and trial process. This study examined the psycholegal abilities of young offenders with FASD, including their understanding and appreciation of Miranda rights, and adjudication capacities (factual knowledge of criminal procedure, appreciation of the nature and object of the proceedings, ability to participate in a defense and communicate with counsel). Two groups of young offenders (50 with FASD and 50 without prenatal alcohol exposure) completed Grisso's Instruments for Assessing Understanding and Appreciation of Miranda rights and the Fitness Interview Test-Revised to assess overall rates of impairment in youth with FASD, as well as differences between the groups. Potentially important predictors of psycholegal abilities were also evaluated. Results indicated the majority of young offenders with FASD (90%) showed impairment in at least one psycholegal ability, and rates of impairment were significantly higher than the comparison group. However, considerable within-group variability was observed. IQ and reading comprehension emerged as robust predictors of participants' psycholegal abilities, while the FASD diagnosis differentiated participants' scores on the FIT-R. These findings underscore the importance of individualized and comprehensive forensic assessments of psycholegal abilities in this population when warranted. Additional system level strains for this population are discussed, including problems in approaching competency remediation, and the potentially growing need for accommodation and forensic assessments in the face of limited financial and professional resources in legal settings. PMID:23834387

  2. Voyager 2 in the uranian system: imaging science results.

    PubMed

    Smith, B A; Soderblom, L A; Beebe, R; Bliss, D; Boyce, J M; Brahic, A; Briggs, G A; Brown, R H; Collins, S A; Cook, A F; Croft, S K; Cuzzi, J N; Danielson, G E; Davies, M E; Dowling, T E; Godfrey, D; Hansen, C J; Harris, C; Hunt, G E; Ingersoll, A P; Johnson, T V; Krauss, R J; Masursky, H; Morrison, D; Owen, T; Plescia, J B; Pollack, J B; Porco, C C; Rages, K; Sagan, C; Shoemaker, E M; Sromovsky, L A; Stoker, C; Strom, R G; Suomi, V E; Synnott, S P; Terrile, R J; Thomas, P; Thompson, W R; Veverka, J

    1986-07-01

    Voyager 2 images of the southern hemisphere of Uranus indicate that submicrometersize haze particles and particles of a methane condensation cloud produce faint patterns in the atmosphere. The alignment of the cloud bands is similar to that of bands on Jupiter and Saturn, but the zonal winds are nearly opposite. At mid-latitudes (-70 degrees to -27 degrees ), where winds were measured, the atmosphere rotates faster than the magnetic field; however, the rotation rate of the atmosphere decreases toward the equator, so that the two probably corotate at about -20 degrees . Voyager images confirm the extremely low albedo of the ring particles. High phase angle images reveal on the order of 10(2) new ringlike features of very low optical depth and relatively high dust abundance interspersed within the main rings, as well as a broad, diffuse, low optical depth ring just inside the main rings system. Nine of the newly discovered small satellites (40 to 165 kilometers in diameter) orbit between the rings and Miranda; the tenth is within the ring system. Two of these small objects may gravitationally confine the e ring. Oberon and Umbriel have heavily cratered surfaces resembling the ancient cratered highlands of Earth's moon, although Umbriel is almost completely covered with uniform dark material, which perhaps indicates some ongoing process. Titania and Ariel show crater populations different from those on Oberon and Umbriel; these were probably generated by collisions with debris confined to their orbits. Titania and Ariel also show many extensional fault systems; Ariel shows strong evidence for the presence of extrusive material. About halfof Miranda's surface is relatively bland, old, cratered terrain. The remainder comprises three large regions of younger terrain, each rectangular to ovoid in plan, that display complex sets of parallel and intersecting scarps and ridges as well as numerous outcrops of bright and dark materials, perhaps suggesting some exotic

  3. [Waist-height ratio and risk of metabolic syndrome in Chilean adolescent].

    PubMed

    Garcia-Rubio, Javier; Lopez-Legarrea, Patricia; Gomez-Campos, Rossana; Cossio-Bolaños, Marco; Merellano-Navarro, Eugenio; Olivares, Pedro R

    2015-04-01

    Objetivos: El propósito de este estudio fue: i)analizar la prevalencia del riesgo de sufrir Síndrome Metabólico (SM) mediante la Relación Cintura-Estatura (RCE) en una muestra de adolescentes chilenos representativa a nivel nacional; y ii) obtener tablas de percentiles de la RCE por sexo y edad para esta población. Métodos: estudio transversal con una muestra de 23.180 adolescentes (chicos n= 11.253; chicas n= 11.927) de 13 a 16 años. Se llevaron a cabo medidas antropométricas de altura, peso y perímetro de cintura. El riesgo de sufrir SM se calculó mediante la RCE estableciendo el punto de corte en 0,5 y se obtuvo su prevalencia para todas las regiones chilenas. Se calcularon los percentiles de la RCE para esta población. Resultados: El 22,4% de los participantes mostraron una RCE superior a 0,5 siendo el riesgo la prevalencia de sufrir SM más elevada en las regiones extremas del país (norte y sur). Las chicas de 15 y 16 años mostraron valores de RCE superior a los chicos. Los resultados obtenidos muestran valores de RCE superiores a los publicados en otros estudios a nivel internacional. Conclusión: Se ha determinado el riesgo de sufrir SM en adolescentes chilenos a partir de la RCE, estando éste asociado al sexo y la región donde se vive. Adicionalmente se han obtenido los percentiles de RCE para los jóvenes chilenos de 13 a 16 años en una muestra representativa a nivel nacional.

  4. Mapping the Extent of the Lovejoy Basalt Beneath the Sacramento Valley, CA, Using Aeromagnetic Data

    NASA Astrophysics Data System (ADS)

    Langenheim, V. E.; Sweetkind, D. S.; Springhorn, S.

    2014-12-01

    The Lovejoy Basalt is a distinctive Miocene (~16 Ma) unit that erupted from Thompson Peak in the northeast Sierra Nevada, flowed southwest across the Sierra Nevada into the Sacramento Valley. It crops out in a few places in Sacramento Valley: (1) near Chico and Oroville on the east side of the valley, (2) Orland Buttes on the west side, and (3) Putnam Peak, some 250 km southwest of Thompson Peak. The basalt is also encountered in drill holes, but its extent is not entirely known. The Lovejoy Basalt is strongly magnetic and, in general, reversely magnetized, making it an excellent target for aeromagnetic mapping. Recently acquired aeromagnetic data (flight line spacing 800 m at an altitude of 240 m) indicate a characteristic, sinuous, short-wavelength magnetic pattern associated with outcrops and known subcrops of Lovejoy Basalt. Filtering of these data to enhance negative, short-wavelength anomalies defines two large bands of negative anomalies that trend southwest of Chico and Oroville and appear to coalesce about 25 km north of Sutter Buttes. Another band of negative anomalies extends north of the junction roughly along the Sacramento River 40 km to Deer Creek. The anomalies become more subdued to the north, suggesting that the Lovejoy thins to the north. Aeromagnetic data also indicate a large subcrop of Lovejoy Basalt that extends 25 km north-northeast from exposures at Orland Buttes. Driller logs from gas and water wells confirm our mapping of Lovejoy within these areas. The sinuous magnetic lows are not continuous south of Sutter Buttes, but form isolated patches that are aligned in a north-south direction south of the concealed Colusa Dome to Putnam Peak and an east-west, 20-km-long band about 15 km south of Sutter Buttes. Other reversed anomalies in the Sacramento Valley coincide with volcanic necks in the Sutter Buttes and Colusa Dome; these produce semicircular anomalies that are distinct from those caused by the Lovejoy Basalt.

  5. Educacion Bilingue: Una Declaraccion del Plan y Accion que Proponen los Regentes de la Universidad del Estado de Nueva York. Bilingual Education: A Statement of Policy and Proposed Action by the Regents of the University of the State of New York. Position Paper No. 16.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany.

    Large numbers of Puerto Rican and other non-English-speaking students live in school districts throughout New York State. To enable these students to function in an English-speaking society while retaining their own culture, a policy to promote bilingual program planning was established by the Board of Regents of New York State in 1972. In this…

  6. Reading: Students' Attitudes and Interests in Fourth, Fifth, and Sixth Grades in Official Portuguese Schools in the USA (A Leitura: Atitudes e Preferencias dos Educandos do 4th, 5th, e 6th Anos de Escolaridade nas Escolas Oficiais Portuguesas nos Estados Unidos da America).

    ERIC Educational Resources Information Center

    Castanho, Maria da Graca Borges

    A study investigated attitudes and preferences concerning reading among fourth-, fifth-, and sixth-grade students in Portuguese-language schools in the United States. Extrinsic factors influencing students (parents, teachers) were also analyzed. The research took place in 10 schools in 5 states. Data were obtained using questionnaires (students)…

  7. Proyecto Curricular Sobre la Herencia Iberoamericana. Latinos en la Formacion de los Estados Unidos de American: Ayer, Hoy y Manana. Procedimientos de la Conferencia Sequnda Conferencia Anual del Panel Consultivo Internacional en Santillana del Mar, Espana (The Ibero-American Heritage Curriculum Project. Latinos in the Making of the United States of America: Yesterday, Today, and Tomorrow).

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany.

    The Ibero-American Heritage Curriculum Project is an interdisciplinary curriculum development project designed to integrate the study of Ibero-American heritage and culture into classroom instructional programs, kindergarten through grade 12. The project was initiated by the New York State Education Department and involves the Spanish National…

  8. Palabras del Secretario de Educacion Publica en la reunion anual de directores de education federal e inspectores generales en los estados que se rigen por el calendario "A". (Address by the Minister of Education at the Annual Meeting of Directors of Federal Education and Inspectors General in Calendar "A" States).

    ERIC Educational Resources Information Center

    Yanez, Agustin

    This document is an English-language abstract (approximately 1,500 words) of a speech by the Mexican Minister of Education at an annual educators meeting. The Minister dealt with the administration and quality of education, the role of the directors and the duties towards them of the inspectors, and the main features of the reform of national…

  9. Educacion Bilingue: Una Declaracion del Plan y Accion que Proponen los Regentes de la Universidad del Estado de Nueva York (Bilingual Education: A Statement of Policy and Proposed Action by the Regents of the University of the State of New York.)

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany.

    The primary goal of the Regents in their bilingual education program is to provide equal educational opportunity for non-English-speaking children through activities capitalizing on their proficiency in their native language and developing competency in English. Two complementary goals are inherent: (1) a vitally needed national resource, the…

  10. El Derecho de su Hijo(a) a Una Educacion: Una guia para los Padres de Ninos Impedidos en el Estado de Nueva York (Your Child's Right to an Education: A Guide for Parents of Children with Handicapping Conditions in New York State).

    ERIC Educational Resources Information Center

    New York State Education Dept. Albany. Office for the Education of Children with Handicapping Conditions.

    Intended for parents of handicapped students, the guide (available in English, Spanish, or Chinese) sets forth the New York State policies for speical education. The following topics are among those considered: eligibility for special education, program types, alternative placements (such as residential settings), referral, evaluation,…

  11. Una Guia para Los Padres sobre La Educacion Especial: El Derecho de Su Hijo(a) a Adquirir una Educacion en el Estado de Nueva York (A Parent's Guide to Special Education: Your Child's Right to an Education in New York State).

    ERIC Educational Resources Information Center

    New York State Education Dept. Albany. Office for the Education of Children with Handicapping Conditions.

    This guide provides information to help parents of special needs children in New York become active partners in the planning and implementation of special education programs. The first part of the guide provides in-depth information related to the special education process in New York State public schools. A historical view of children's rights to…

  12. Los Hispanos: Problemas y Oportunidades. Resumen de la Actual Situacion Demografica, Economica, Social y Politica de los Hispanos en los Estados Unidos y de las Iniciativas Tomadas por la Fundacion Ford Para Hacer Frente a las Necesidades de esta Poblacion en Aumento y Determinar sus Efectos Sobre la Sociedad Estadounidense. Documento de Trabajo de la Fundacion Ford, No. 436.

    ERIC Educational Resources Information Center

    Ford Foundation, New York, NY.

    The Hispanic population's growing impact on American society has caused the Ford Foundation to explore new Foundation initiatives. The 1980 census revealed 14.6 million Hispanics: 60% Mexican American; 14% Puerto Rican; 6% Cuban, and 20% Other. The Hispanic population in the United States is growing and is characterized by diversity; rapid growth…

  13. Informe a la nación indica que los índices de muertes por cáncer siguen bajando

    Cancer.gov

    Los índices de mortalidad por todos los cánceres combinados para hombres, mujeres y niños siguieron bajando en Estados Unidos entre 2004 y 2008, según el Informe Anual a la Nación sobre el Estado del Cáncer de 1975 a 2008. El índice general de diagnóstico

  14. Informe a la Nación de mortalidad por cáncer sigue bajando

    Cancer.gov

    El Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2009, indica que los índices generales de mortalidad por cáncer siguen bajando en los Estados Unidos en hombres y mujeres, entre todos los grupos raciales y étnicos principales y para todo

  15. Tectonics of the Outer Planet Satellites

    NASA Technical Reports Server (NTRS)

    McKinnon, W. B.; Collins, G. C.; Moore, J. M.; Nimmo, F.; Pappalardo, R. T.; Prockter, L. M.; Schenk, P. M.

    2010-01-01

    pervasively tectonized, covered with a diverse array of exotic and incompletely understood tectonic features. The paucity of impact craters on Europa suggests that its tectonic activity is ongoing. Geysers on Triton show that some degree of current activity, while tectonic features that cross sparsely cratered terrain indicate that it may also be tectonically active. Ganymede and Miranda both exhibit ancient terrains that have been pulled apart by normal faulting. On Ganymede these faults form a global network, while they are confined to regional provinces on Miranda. Ariel, Dione, Tethys, Rhea, and Titania all have systems of normal faults cutting across their surfaces, though the rifting is less pronounced than it is on Ganymede and Miranda. Iapetus exhibits a giant equatorial ridge that has defied simple explanation. The rest of the large and middle-sized satellites show very little evidence for tectonic features on their surfaces, though the exploration of Titan's surface has just begun.

  16. Correlation between the Palaeozoic structures from West Iberian and Grand Banks margins using inversion of magnetic anomalies

    NASA Astrophysics Data System (ADS)

    Silva, Elsa A.; Miranda, J. M.; Luis, J. F.; Galdeano, A.

    2000-05-01

    The Ibero-Armorican Arc (IAA) is a huge geological structure of Pre-Cambrian origin, tightened during hercynian times and deeply affected by the opening of the Atlantic Ocean and the Bay of Biscay. Its remnants now lie in Iberia, north-western France and the Canadian Grand Banks margins. The qualitative correlation between these three blocks has been attempted by several authors (e.g. Lefort, J.P., 1980. Un 'Fit' structural de l'Atlantique Nord: arguments geologiques pour correler les marqueurs geophysiques reconnus sur les deux marges. Mar. Geol. 37, 355-369; Lefort, J.P., 1983. A new geophysical criterion to correlate the Acadian and Hercynian orogenies of Western Europe and Eastern America. Mem. Geol. Soc. Am. 158, 3-18; Galdeano, A., Miranda, J.M., Matte, P., Mouge, P., Rossignol, C., 1990. Aeromagnetic data: A tool for studying the Variscan arc of Western Europe and its correlation with transatlantic structures. Tectonophysics 177, 293-305) using magnetic anomalies, mainly because they seem to preserve the hercynian zonation, in spite of the strong thermal and mechanical processes that took place during rifting and ocean spreading. In this paper, we present a new contribution to the study of the IAA structure based on the processing of a compilation of magnetic data from Iberia and Grand Banks margins. To interpret the magnetic signature, a Fourier-domain-based inversion technique was applied, considering a layer with a constant thickness of 10 km, and taking into account only the induced field. The digital terrain model was derived from ETOPO5 (ETOPO5, 1986. Relief map of the earth's surface. EOS 67, 121) and TerrainBase (TerrainBase, 1995. In: Row III, L.W., Hastings, D.A., Dunbar, P.K. (Eds.), Worldwide Digital Terrain Data, Documentation Manual, CD-ROM Release 1.0. GEODAS-NGDC Key to Geophysical Records. Documentation N. 30, April) databases. The pseudo-susceptibility distribution obtained was repositioned for the 156.5 Ma epoch, using the Srivastava and

  17. 78 FR 47489 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to the Foreign...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-05

    ... MUNDIAL INMOBILIARIA, S.A. DE C.V., Huixquilucan, Estado de Mexico, Mexico; c/o UNION DE CONSTRUCTORES....; Linked To: RED MUNDIAL INMOBILIARIA, S.A. DE C.V.; Linked To: FUNDACION PARA EL BIENESTAR Y EL...

  18. Simulations of aerosols and their effects on photolysis and ozone formation in Mexico City

    NASA Astrophysics Data System (ADS)

    Li, G.; Zavala, M.; Lei, W.; Karydis, V. A.; Tsimpidi, A. P.; Pandis, S.; Molina, L. T.

    2009-04-01

    Atmospheric aerosols, formed from natural and anthropogenic sources, are believed to be associated with adverse human effects at high levels in polluted urban areas. They also play a key role in climate through direct and indirect effects. Therefore, accurate simulations of aerosol composition and distribution in the atmospheric models are important in evaluating their impact on environment and climate. In the present study, a flexible gas phase chemical module with SAPRC mechanism and the CMAQ/models3 aerosol module developed by EPA have been implemented into the WRF-CHEM model. Additionally, to further improve the aerosol, especially the secondary organic aerosol (SOA) simulations, an advanced SOA module [Tsimpidi et al., 2009] has been incorporated into the WRF-CHEM model. The new SOA module is based on the volatility basis-set approach in which both primary and secondary organic components are assumed to be semivolatile and photochemically reactive [Lane et al., 2008]. Gas phase species and aerosol simulation results are compared with the available measurements obtained during the MILAGRO 2006 campaign. When the advanced SOA mechanism is employed, the SOA simulations are significantly improved. Furthermore, the aerosol impacts on the photochemistry in Mexico City have been evaluated using the FTUV [Tie et al., 2005]. Aerosol optical properties are calculated using the Mie theory and compared with available observations in Mexico City [Paredes-Miranda et al., 2008]. Aerosols, principally black carbon, reduce the photolysis frequencies of J[O3(1D)] and J[NO2] in the planetary boundary layer and hence decrease the ground-level ozone concentration. Our study demonstrates that the impact of aerosols on photochemistry is significant in polluted urban atmosphere. References: Lane, T. E., N. M. Donahue, and S. N. Pandis (2008), Simulating secondary organic aerosol formation using the volatility basis-set approach in a chemical transport model, PMCAMx, Atmos. Environ

  19. Ephemerides of the main Uranian satellites

    NASA Astrophysics Data System (ADS)

    Emelyanov, N. V.; Nikonchuk, D. V.

    2013-12-01

    A new model of motions of the five main Uranian satellites is developed. The model is based on all published observations made since the dates of the satellites' discoveries until 2008. The corresponding periods are 220 yr for Titania and Oberon, 160 yr for Ariel and Umbriel and 60 yr for Miranda. To fit the parameters of the satellites' motion, 30 139 observations were used, including those made by the Voyager 2 spacecraft as well as astrometric results of the photometric observations of mutual occultations and eclipses of the main Uranian satellites in 2007-2008. The model is elaborated by the numerical integration of equations of motions of the satellites where all necessary perturbating factors were taken into consideration. Basing on the model, new ephemerides of the main Uranian satellites were generated for the period from 1787 to 2031. The ephemerides are put to the MULTI-SAT ephemeris server. The root-mean-square residual of observed topocentric positions of the satellites and their ephemeris positions is 0.43 arcsec. Taking into account the weighting factors of the observations, this value is 0.12 arcsec. An attempt is also made to define from observations the parameters of the mechanical energy dissipation of the satellites' motion. The dissipation can be caused by both tides in the planet and by the tides in the satellites' bodies. Approximate values of the quadratic terms in the orbital longitudes are obtained. These values are equal to -(0.64 ± 0.11) × 10-11 d-2 for Ariel, -(0.08 ± 0.24) × 10-11 d-2 for Umbriel, -(0.29 ± 0.09) × 10-11 d-2 for Titania, -(0.32 ± 0.07) × 10-11 d-2 for Oberon and -(7.56 ± 1.15) × 10-11 d-2 for Miranda. The obtained parameters reveal deceleration in the orbital motion of the satellites, which results from the influence of the tides raised on the interior of Uranus that is rotating faster than the satellites.

  20. Astrometry of the main satellites of Uranus: 18 years of observations

    NASA Astrophysics Data System (ADS)

    Camargo, J. I. B.; Magalhães, F. P.; Vieira-Martins, R.; Assafin, M.; Braga-Ribas, F.; Dias-Oliveira, A.; Benedetti-Rossi, G.; Gomes-Júnior, A. R.; Andrei, A. H.; da Silva Neto, D. N.

    2015-10-01

    Context. We contribute to developing dynamical models of the motions of Uranus' main satellites. Aims: We determine accurate positions of the main satellites of Uranus: Miranda, Ariel, Umbriel, Titania, and Oberon. Positions of Uranus, as derived from those of these satellites, are also determined. The observational period spans from 1992 to 2011. All runs were made at the Pico dos Dias Observatory, Brazil. Methods: We used the software called Platform for Reduction of Astronomical Images Automatically (PRAIA) to perform a digital coronography to minimise the influence of the scattered light of Uranus on the astrometric measurements and to determine accurate positions of the main satellites. The positions of Uranus were then indirectly determined by computing the mean differences between the observed and ephemeris positions of these satellites. A series of numerical filters was applied to filter out spurious data. These filters are mostly based on (a) the comparison between the positions of Oberon with those of the other satellites and on (b) the offsets as given by the differences between the observed and ephemeris positions of all satellites. Results: We have, for the overall offsets of the five satellites, -29 mas (±63 mas) in right ascension and -27 mas (±46 mas) in declination. For the overall difference between the offsets of Oberon and those of the other satellites, we have +3 mas (±30 mas) in right ascension and -2 mas (±28 mas) in declination. Ephemeris positions for the satellites were determined from DE432+ura111. Comparisons using other modern ephemerides for the solar system - INPOP13c - and for the motion of the satellites - NOE-7-2013 - were also made. They confirm that the largest contribution to the offsets we find comes from the motion of the barycenter of the Uranus system around the barycenter of the solar system, as given by the planetary ephemerides. For the period from 1992 to 2011, our final catalogues contain 584 observed positions of

  1. A refined age grid for the Central North Atlantic

    NASA Astrophysics Data System (ADS)

    Luis, J. M.; Miranda, J.

    2012-12-01

    We present a digital model for the age of the Central North Atlantic as a geographical grid with 1 arc minute resolution. Our seafloor isochrons are identified following the 'grid procedure' described in the work of Luis and Miranda (2008). The grid itself, which was initially a locally improved version of the Verhoef et al. (1996) compilation, was improved in 2011 (Luis and Miranda, 2011) and further refined with the inclusion of Russian data north of Charlie Gibbs FZ (personal communication, S. Mercuriev). The location and geometry of the Mid-Atlantic Ridge is now very well constrained by both magnetic anomalies and swath bathymetry data down to ~10 degrees N. We identified an extensive set of chrons 0, 2A, 3, 3A, 4, 4A, 5, 6, 6C, 11-12, 13, 18, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 32, 33r, M0, M2, M4, M10, M16, M21 and M25. The ages at each grid node are computed by linear interpolation of adjacent isochrons along the direction of the flow-lines. As a pre-processing step each conjugate pair of isochrones was simplified by rotating one of them about the finite pole of that anomaly and use both, original picks plus rotated ones, to calculate an average segment. Fractures zones are used to constrain the chron's shape. These procedures minimize the uncertainties in locations where on one side of the basin one has good identifications but the other is poorly defined as is typical of many of the old isochrones. Care has also taken to account for locations where significant ridge jumps were found. Ages of the ocean floor between the oldest identified magnetic anomalies and continental crust are interpolated using the oldest ages of the Muller at al. (2008), which were themselves estimated from the ages of passive continental margin segments. This is a contribution to MAREKH project (PTDC/MAR/108142/2008) funded by the Portuguese Science Foundation.

  2. Climate variability and Port wine quality

    NASA Astrophysics Data System (ADS)

    Gouveia, Celia; Liberato, Margarida L. R.; Trigo, Ricardo M.; Dacamara, Carlos

    2010-05-01

    Recent warming trends for Portugal have been found to be steepest in winter and spring and more pronounced for minimum than for maximum values of temperature (Miranda et al, 2002). These trends and associated changes in temperature and precipitation regimes may exert strong influences on agriculture systems. For instance, high values of the North Atlantic Oscillation (NAO) index have been shown to significantly reduce precipitation over Iberia and therefore induce low yield wheat crops in Portugal (Gouveia and Trigo, 2006). Port wine is produced from grapes grown in selected areas of the Douro valley, the so-called Região Demarcada do Douro, the first wine-producing region of the world (dating from 1758). A vintage wine is made from grapes that were grown and harvested in a single specified year and is classified as such because of the above average quality, a status that is attributed by Port houses in their best years. The Douro region presents distinctive climatic, topographic and soil characteristics. While the latest factors are fixed in time, the former may considerably change from year to year, exposing the Port wine productions to a large risk associated to interannual and intra-seasonal climatic variations. It is therefore to be expected that high quality wines are generally associated to optimum climatic conditions. In this work we have performed an analysis of the distinct behaviour of several meteorological fields in vintage versus non-vintage years. The relative importance of maximum and minimum temperature, precipitation and frost days is assessed for each individual month of the vegetative cycle and their importance to a high quality wine year is evaluated. Composites of 500 hPa geopotential height and sea level pressure fields over the Euro Atlantic region are also compared for vintage and non-vintage years. Results reveal a strong dependence of vintage production on maximum temperature and precipitation during spring and summer (the growing season

  3. Destructive gravitational encounters: Outcome and implications of catastrophic collisions and tidal splitting in the post-formation outer solar system

    NASA Astrophysics Data System (ADS)

    Movshovitz, Naor

    2015-06-01

    I present results from three theoretical numerical studies relating to destructive events in the lives of outer solar system satellites and smaller bodies. The first project is a study of the implications that a Late Heavy Bombardment in the outer solar system, such as predicted by the Nice model, might have had for the mid sized moons of Jupiter, Saturn, and Uranus. A Monte Carlo calculation shows that Mimas, Enceladus, Tethys, and Miranda each would almost certainly have experienced at least one catastrophic collision after formation. If true, these bodies would have disrupted and then reaccreted as scrambled mixtures of rock and ice---potentially preserving this signature in their present day structure. Conversely, if these satellites are fully differentiated today then they would have required a heat source sufficient for melting and differentiation in the absence of short half life radioactive elements. Tidal heating may have been sufficient for Tethys, Enceladus, and Miranda, but a differentiated Mimas would present a difficulty to either the Nice model or to the classical formation model of the Saturn system. The second study is a numerical investigation of the expected outcome of destructive collisions between gravity-dominated bodies; in particular of the conditions required for a collision to be catastrophic, defined as one that leaves behind a surviving body with less than half the total colliding mass. In this study I focus on bodies with radii between 100 and 1000 km, a previously neglected size range, and derive a simple scaling law for the threshold impact energy required for disruption in this size range. This scaling law is expected to hold for all projectile-to-target size ratios and is independent of material, so long as elastic strength may be ignored. Compared with scaling laws existing in the literature the newly derived scaling generally predicts lower threshold energy for disruption, except for highly oblique impacts by projectiles much

  4. Constraining the processes modifying the surfaces of the classical Uranian satellites

    NASA Astrophysics Data System (ADS)

    Cartwright, Richard J.; Emery, Joshua P.

    2016-10-01

    Near-infrared (NIR) observations of the classical Uranian moons have detected relatively weak H2O ice bands, mixed with a spectrally red, low albedo constituent on the surfaces of their southern hemispheres (sub-observer lat. ~10 – 75°S). The H2O bands and the degree of spectral reddening are greatest on the leading hemispheres of these moons. CO2 ice bands have been detected in spectra collected over their trailing hemispheres, with stronger CO2 bands on the moons closest to Uranus. Our preferred hypotheses to explain the distribution of CO2, H2O, and dark material are: bombardment by magnetospherically-embedded charged particles, primarily on the trailing hemispheres of these moons, and bombardment by micrometeorites, primarily on their leading hemispheres.To test these complementary hypotheses, we are constraining the distribution and spectral characteristics of surface constituents on the currently observable northern hemispheres (sub-observer lat. ~20 – 35°N) to compare with existing southern hemisphere data. Analysis of northern hemisphere data shows that CO2 is present on their trailing hemispheres, and H2O bands and the degree of spectral reddening are strongest on their leading hemispheres, in agreement with the southern hemisphere data. This longitudinal distribution of constituents supports our preferred hypotheses.However, tantalizing mysteries regarding the distribution of constituents remain. There has been no detection of CO2 on Miranda, and H2O bands are stronger on its trailing hemisphere. NIR slope measurements indicate that the northern hemisphere of Titania is redder than Oberon, unlike the spectral colors of their southern hemispheres. There are latitudinal variations in H2O band strengths on these moons, with stronger H2O bands at northern latitudes compared to southern latitudes on Umbriel and Titania. Several Miranda and Ariel spectra potentially include weak and unconfirmed NH3-hydrate bands, which could be tracers of cryovolcanic

  5. Prevalence of cardiovascular risk factors, the association with socioeconomic variables in adolescents from low-income region.

    PubMed

    Nascimento-Ferreira, Marcus Vinicius; De Moraes, Augusto Cesar F; Carvalho, Heraclito B; Moreno, Luis A; Gomes Carneiro, André Luiz; dos Reis, Victor Manuel M; Torres-Leal, Francisco Leonardo

    2014-01-01

    Objetivos: Estimar la prevalencia de obesidad y sobrepeso, obesidad abdominal y hipertensión arterial en una muestra de adolescentes pertenecientes a una ciudad de baja renta en Brasil y su relación con el nivel socioeconómico, nivel educativo de lo responsable de la familia y tipo de escuela. Métodos: Estudio transversal con una muestra de 1014 adolescentes (54,8% chicas), con edades entre 14-19 años, estudiantes de las escuelas de la ciudad de Imperatriz (Brasil), seleccionadas por un muestreo aleatorio. Las variables dependientes evaluadas son: obesidad general y sobrepeso, obesidad abdominal, y tensión arterial alta (sistólica y/o diastólica). Las variables independientes son: nivel socioeconómico de la familia (NSO), el nivel de educación de lo responsable de la familia (NERF) y tipo de escuela. Las variables de confusión son: sexo, edad y nivel de actividad física. La prevalencia fue estimada, y la asociación entre las variables dependientes y las variables independientes se analizaron mediante razón de prevalencia (RP), con intervalo de confianza (IC) del 95%, estimado por la regresión de Poisson. Resultados: La prevalencia de la obesidad general fue de 3,8%, sobrepeso 13,1%, obesidad abdominal 22,7% y la tesión arterial alta 21,3%. Las análisis ajustadas indicaron que las chicas con NSO alto tienen mayor probabilidad de tener sobrepeso (RP=1,71 [IC95%: 1,13 a 2,87]), y chicos de las escuelas privadas tienen más probabilidad de tener obesidad (RP=1,79 [IC95%: 1.04- 3,08]) y obesidad abdominal (RP=1,64 [IC95%: 1,06 a 2,54]). Conclusión: La prevalencia de los FRC es alta en adolescentes de una región de baja renta. Los chicos de las escuelas privadas son más propensos a tener obesi dad y obesidad abdominal, y las chicas con NSO alto son más propensas a tener sobrepeso.

  6. Miniaturization and Autonomous Deployment of the Optical Fiber Infrasound Sensor

    NASA Astrophysics Data System (ADS)

    DeWolf, S.; Walker, K. T.; Zumberge, M. A.

    2010-12-01

    A key difficulty in infrasound signal detection is the noise created by spatially incoherent turbulence that is usually present in wind. Increasing wind speeds correlate with increasing noise levels across the entire infrasound band. Spatial separation of sensors with array processing provides only limited signal-to-noise improvement. Mechanical wind filters, like rosette pipe arrays, also help to reduce wind noise, but the rosette infrasound response depends on the apparent speed and frequency of the signal that propagates across the ports as well as the rosette size. This response places an upper limit of about 70 m on the diameter of rosettes; larger rosettes, while better at wind noise reduction, attenuate important infrasound signals arriving from all directions. Optical fiber infrasound sensors (OFIS) are line microphones that instantaneously integrate pressure along their lengths with laser interferometry. We have developed and tested computationally efficient beamforming techniques that permit the rapid estimation of back azimuth using an array of OFIS arms as well as an array deconvolution technique that accurately stacks weighted versions of the recordings to obtain the infrasound signal. In this presentation we report on the major changes to our OFIS deployment strategies to accommodate a recent installment of a four element array in the Big Chico Creek Ecological Reserve, near Chico, CA. This includes significant improvement of the data acquisition and real-time digital signal processing systems, development of a robust and low-noise laser source, reduction of the power budget to that compatible with solar power, and data telemetry that enables each sensor to run autonomously. We also demonstrate that the sensitivity of the OFIS is linear over a wide range of pressures, which combined with the dynamic range of the digitizer, also makes the OFIS suitable for impulsive, near-field source studies. Using one of the aforementioned beamforming techniques, we

  7. EARLY IMPACT MELTING AND SPACE EXPOSURE HISTORY OF THE PAT91501 LCHONDRITE

    NASA Technical Reports Server (NTRS)

    Bogard, Donald D.; Garrison, D. H.; Herzog, G. F.; Xue, S.; Klein, J.; Middleton, R.

    2004-01-01

    Collisions probably occurred frequently in the early history of the asteroid belt. Their effects, which should be recorded in meteorites, must have included heating and melting along with shock alteration of mineral textures. Some non-chondritic meteorite types e.g., eucrites and IIE and IAB irons - do indeed give evidence of extensive impact heating more than 3.4 Gyr ago. The ordinary chondrites, in contrast, show little evidence of early impact heating. The Ar-Ar and Rb-Sr ages of ordinary chondrites that experienced intense shock are for the most part relatively young, many less than 1.5 Gyr. The numerous L-chondrites with Ar- Ar ages clustering near 0.5 Gy are a well-known example. One of them, the 105-kg Chico Lchondrite, shows the effects of unusually intense heating. It is approximately 60% impact melt and likely formed as a dyke beneath a large crater when the L-chondrite parent body underwent a very large impact approximately 0.5 Gyr ago. In rare instances, older shock dates are indicated for ordinary chondrites. Dixon et al show early impact resetting of Ar-Ar ages of a few LL-chondrites including MIL 99301 at 4.23 0.03 Gyr, but in none of these stones did shock lead to extensive melting. As of 2003, searches for chondritic melts attributable to early shock had turned up only the Shaw L-chondrite, which has an Ar-Ar age of approximately 4.42 Gyr. PAT91501 is an 8.55-kg L-chondrite containing vesicles and metal-troilite nodules. It is a unique, near-total impact melt, unshocked, depleted in siderophile and chalcophile elements, and contains only approximately 10% relic chondritic material. The authors conclude that PAT91501 crystallized rapidly and from a much more homogeneous melt than did Shaw. They suggest that PAT resembles Chico and likely formed as an impact melt vein within an impact crater. To define the history of PAT, we have determined its Ar-39-Ar-40 age and measured several radioactive and stable nuclides produced during its space exposure to

  8. [CONTRIBUTION OF PHYSICAL EDUCATION TO DAILY RECOMMENDATIONS OF PHYSICAL ACTIVITY IN ADOLESCENTS ACCORDING TO GENDER; A STUDY WITH ACCELEROMETRY].

    PubMed

    Viciana, Jesús; Martínez-Baena, Alejandro; Mayorga-Vega, Daniel

    2015-09-01

    Introducción: la institucionalización de la escuela como contexto propicio para el incremento de la actividad física (AF) saludable, la disparidad de resultados en el contexto internacional y la escasez de estudios españoles con medición objetiva en el marco de la Educación Física (EF) hacen necesaria la profundización en esta línea de investigación. Objetivos: los objetivos fueron determinar niveles objetivos de AF durante las clases de EF en adolescentes, comprobar su contribución a la AF diaria recomendable e identificar posibles diferencias según el género. Métodos: una muestra de 337 escolares (211 varones y 183 mujeres), de 13 a 16 años, participaron en esta investigación. La AF se estimó mediante medida objetiva (acelerómetro GT3X), registrándose dos horas completas de clase. Solo aquellos participantes que cumplieron con los criterios mínimos de registro fueron seleccionados para el estudio (n = 231). Resultados: los resultados mostraron que no se cumplen las recomendaciones de tiempo de práctica durante las clases de EF. Se encontraron diferencias significativas según el género en el tiempo de compromiso motor y los pasos/min, así como en los índices de AF moderada-vigorosa y en el tiempo de sedentarismo de los escolares estudiados (p < 0,05). Conclusiones: la EF tiene una escasa contribución a las recomendaciones de AF moderada-vigorosa (casi un tercio en chicos y un cuarto en chicas) y de pasos diarios (quinta parte en chicos/as), limitada además por su duración y frecuencia semanal. Incrementarla en el sistema educativo actual ayudaría a la consecución de estos estándares.

  9. Differential expression of microRNAs in shrimp Marsupenaeus japonicus in response to Vibrio alginolyticus infection.

    PubMed

    Zhu, Fei; Wang, Zhi; Sun, Bao-Zhen

    2016-02-01

    Till date numerous microRNAs (miRNAs) have been discovered from various organisms, including mammals, plants, insects, nematodes and viruses. They are known to have antiviral functions in crustaceans such as shrimp Marsupenaeus japonicas. However, little is known about the role of miRNAs against bacterial infection in this shrimp caused by Vibrio alginolyticus. We performed small RNA sequencing to characterize the differentially expressed microRNAs in V. alginolyticus challenged shrimp, in comparison to that in control uninfected shrimp, at 24 h and 48 h. In total, 55 host miRNAs were differentially expressed in response to the infection and most of these were downregulated at both the time-points. TargetScan and miRanda algorithms showed that the target genes of these down-regulated miRNAs were related to innate immune functions such as production of phenoloxidase enzyme, apoptosis and phagocytosis. Further, gene ontology analysis revealed that many immune signaling pathways were mediated by these miRNAs. This study is one of the earliest attempts at characterizing shrimp miRNAs that respond to V. alginolyticus infection, and will help unravel the miRNA pathways involved in antibacterial action in shrimp.

  10. Seed magnetic Fields Generated by Primordial Supernova Explosions

    NASA Astrophysics Data System (ADS)

    Miranda, Oswaldo D.; Opher, Merav; Opher, Reuven

    1998-12-01

    The origin of the magnetic field in galaxies is an open question in astrophysics. Several mechanisms have been proposed related, in general, to the generation of small seed fields amplified by a dynamo mechanism. In general, these mechanisms have difficulty in satisfying both the requirements of a sufficiently high strength for the magnetic field and the necessary large coherent scales. We show that the formation of dense and turbulent shells of matter, in the multiple explosion scenario of Miranda & Opher for the formation of the large-scale structures of the Universe, can naturally act as a seed for the generation of a magnetic field. During the collapse and explosion of Population III objects, a temperature gradient not parallel to a density gradient can naturally be established, producing a seed magnetic field through the Biermann battery mechanism. We show that seed magnetic fields ~10^-12-10^-14G can be produced in this multiple explosion scenario on scales of the order of clusters of galaxies (with coherence length L~1.8Mpc) and up to ~4.5x10^-10G on scales of galaxies (L~100kpc).

  11. Characterizing the Influence of Effective Population Size on the Rate of Adaptation: Gillespie’s Darwin Domain

    PubMed Central

    Jensen, Jeffrey D.; Bachtrog, Doris

    2011-01-01

    Characterizing the role of effective population size in dictating the rate of adaptive evolution remains a major challenge in evolutionary biology. Depending on the underlying distribution of fitness effects of new mutations, populations of different sizes may differ vastly in their rate of adaptation. Here, we collect polymorphism data at over 100 loci for two closely related Drosophila species with different current effective population sizes (Ne), Drosophila miranda and D. pseudoobscura, to evaluate the prevalence of adaptive evolution versus genetic drift in molecular evolution. Utilizing these large and consistently sampled data sets, we obtain greatly improved estimates of the demographic histories of both species. Specifically, although current Ne differs between these species, their ancestral sizes were much more similar. We find that statistical approaches capturing recent adaptive evolution (using patterns of polymorphisms) detect higher rates of adaptive evolution in the larger D. pseudoobscura population. In contrast, methods aimed at detecting selection over longer time periods (i.e., those relying on divergence data) estimate more similar rates of adaptation between the two species. Thus, our results suggest an important role of effective population size in dictating rates of adaptation and highlight how complicated population histories—as is probably the case for most species—can effect rates of adaptation. Additionally, we also show how different methodologies to detect positive selection can reveal information about different timescales of adaptive evolution. PMID:21705473

  12. Drunk driving, implied consent, and self-incrimination.

    PubMed

    Ogundipe, Kehinde A; Weiss, Kenneth J

    2009-01-01

    The effects of drunk driving are a significant risk to public health and safety. Accordingly, the federal government and the states have enacted laws that permit law enforcement to identify offenders and to apply various levels of sanctions. There is no constitutional requirement that evidence of drunkenness be permitted in defense of criminal behavior. In practice, citizens who undertake to operate motor vehicles under the influence of alcohol are considered reckless per se and have no right to obstruct law enforcement in determining their condition. Indeed, refusal of roadside sobriety tests, including the Breathalyzer, may be considered a separate offense. The issuing of Miranda-type warnings by police officers has been ruled on recently in New Jersey. In a superior court appellate decision, State v. Spell, the court outlined the necessary procedures, concluding that, although motorists have no right to refuse testing, police officers have an obligation to issue sufficient warnings before the motorist decides how to proceed. In the Spell matter, the defendant incriminated himself by refusing the testing, even though he was acquitted on the drunk-driving charge. The authors discuss the role of expert testimony in these matters. PMID:19767505

  13. Hierarchical Structure and Multifunctional Surface Properties of Carnivorous Pitcher Plants Nepenthes

    NASA Astrophysics Data System (ADS)

    Hsu, Chiao-Peng; Lin, Yu-Min; Chen, Po-Yu

    2015-04-01

    Carnivorous pitcher plants of the genus Nepenthes have evolved specialized leaves fulfilling the multi-functions of attracting, capturing, retaining and digesting the prey, mostly arthropods. Different capturing mechanisms have been proposed and discussed in previous works. The most important capture mechanism is the unique super-hydrophilic surface properties of the peristome. The combination of a hierarchical surface structure and nectar secretions results in an exceptional water-lubricated trapping system. Anisotropic and unidirectional wettability is attributed to the ridge-like surface and epidermal folding. The three-dimensional plate-like wax crystals in the hydrophobic waxy zone can further prevent the prey from escaping. The captured prey are then digested in the hydrophilic digestive zone. The hybrid species Nepenthes × Miranda was investigated in this study. The surface morphology and hierarchical microstructure were characterized by scanning electron microscope. Contact angle measurement and wetting efficiency tests were performed to determine the wettability of the peristome under fresh, nectar-free and sucrose-coated conditions with controlled temperature and humidity. The results showed that sucrose-coated peristome surfaces possess the best wetting efficiency. The structure-property-function relationship and the capturing mechanism of Nepenthes were elucidated, which could further lead to the design and synthesis of novel bio-inspired surfaces and potential applications.

  14. Lessons Learned from Numerical Simulations of Interfacial Instabilities

    NASA Astrophysics Data System (ADS)

    Cook, Andrew

    2015-11-01

    Rayleigh-Taylor (RT), Richtmyer-Meshkov (RM) and Kelvin-Helmholtz (KH) instabilities serve as efficient mixing mechanisms in a wide variety of flows, from supernovae to jet engines. Over the past decade, we have used the Miranda code to temporally integrate the multi-component Navier-Stokes equations at spatial resolutions up to 29 billion grid points. The code employs 10th-order compact schemes for spatial derivatives, combined with 4th-order Runge-Kutta time advancement. Some of our major findings are as follows: The rate of growth of a mixing layer is equivalent to the net mass flux through the equi-molar plane. RT growth rates can be significantly reduced by adding shear. RT instability can produce shock waves. The growth rate of RM instability can be predicted from known interfacial perturbations. RM vortex projectiles can far outrun the mixing region. Thermal fluctuations in molecular dynamics simulations can seed instabilities along the braids in KH instability. And finally, enthalpy diffusion is essential in preserving the second law of thermodynamics. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

  15. Higher than Everest

    NASA Astrophysics Data System (ADS)

    Hodge, Paul

    2001-08-01

    Tired of exploring planet Earth? Have you ever imagined what it would be like to explore the Moon? Ever wonder about the topography of Mars? In this unique guidebook all of your extraterrestrial wanderlust can be fulfilled as Paul Hodge takes you on a virtual tour of the most spectacular sites in the Solar System. Hodge includes the latest information about the Solar System into his vivid descriptions of imaginary, challenging expeditions. Imagine: -- Descending into a fabulous canyon on Mars, one that dwarfs the Earth's Grand Canyon; -- Trekking up Venus' precipitous and scorching Mt. Maxwell; -- Journeying through the snows of Saturn's rings and the incredibly high, icy cliff of Miranda, the moon closest to Uranus. A compelling, extensively illustrated introduction to such otherworldly environments, Higher than Everest makes you believe that someday these adventures may actually take place. Paul Hodge is Professor of Astronomy at the University of Washington, Seattle, and Editor-in-Chief of the Astronomical Journal. Higher than Everest is based on a popular undergraduate course on the planets that he has taught for many years. Hodge's research has spanned from interplanetary dust to the extragalactic distance scale and currently includes star-formation and galactic evolution, using the Hubble Space Telescope to investigate nearby galaxies. He has written several books, most recently Meteorite Craters and Impact Structures of the Earth (Cambridge 1994).

  16. Relative contribution of biotic and abiotic factors to the population density of the cassava green mite, Mononychellus tanajoa (Acari: Tetranychidae).

    PubMed

    Rêgo, Adriano S; Teodoro, Adenir V; Maciel, Anilde G S; Sarmento, Renato A

    2013-08-01

    The cassava green mite, Mononychellus tanajoa, is a key pest of cassava, Manihot esculenta Crantz (Euphorbiaceae), and it may be kept in check by naturally occurring predatory mites of the family Phytoseiidae. In addition to predatory mites, abiotic factors may also contribute to regulate pest mite populations in the field. Here, we evaluated the population densities of both M. tanajoa and the generalist predatory mite Euseius ho DeLeon (Acari: Phytoseiidae) over the cultivation cycle (11 months) of cassava in four study sites located around the city of Miranda do Norte, Maranhão, Brazil. The abiotic variables rainfall, temperature and relative humidity were also recorded throughout the cultivation cycle of cassava. We determined the relative importance of biotic (density of E. ho) and abiotic (rainfall, temperature and relative humidity) factors to the density of M. tanajoa. The density of M. tanajoa increased whereas the density of E. ho remained constant throughout time. A hierarchical partitioning analysis revealed that most of the variance for the density of M. tanajoa was explained by rainfall and relative humidity followed by E. ho density and temperature. We conclude that abiotic factors, especially rainfall, were the main mechanisms driving M. tanajoa densities.

  17. Planetary nomenclature

    NASA Technical Reports Server (NTRS)

    Strobell, M. E.; Masursky, Harold

    1987-01-01

    In fiscal 1986, names were chosen for prominent features on the five previously known Uranian satellites and for features on the largest of the 10 satellites discovered by Voyager 2. The names of the five large satellites are taken mostly from Shakespeare, and most are spirits; therefore, Shakespearean and spirit themes were used to choose names for topographic features on the satellites. Crater names and most other feature names on Miranda, Oberon, and Titania are from Shakespeare; features on Ariel are named for bright spirits and those on Umbriel for dark, all taken from universal mythology. Preliminary coordinates for these features are derived from shaded relief maps of the satellites to be published in 1987. Orbital elements have been established for the 10 new satellites, and a paper describing this work is in progress; satellite positions are under review by Commission 16 of the IAU. The moon 1985 U1 is informally designated Puck. The nine small satellites discovered in 1986 are to be named for Shakespearean heroines; these names are to be listed in the 1987 edition of the Annual Gazetteer of Planetary Nomenclature.

  18. Interaction and Response of a Smectic-A liquid crystal to a 2 nm Nanometer Particle: Phase transition due to the Functionalization Compound

    NASA Astrophysics Data System (ADS)

    Martinez-Miranda, Luz J.; Kurihara, Lynn K.

    2009-03-01

    We have studied the in-plane (parallel to the magnetic field) alignment of 8CB mixed with FeCo nanoparticles covered with different funtionalization compounds. The functionalization compounds are Polyethelene glycol (PEG (3000)), hydroxyl succinimide (NHS), aminopropyl tri-ethoxy silane (APTS) and mercapto hexa-decanoic acid (MHDA). We have studied them using X-ray scattering. We have found that the inverse integrated intensity of the X-ray scans in the plane of the magnetic field is a good measure of how much energy the system (liquid crystal, nanoparticles, functionalization compound) will need to reorient the liquid crystal in the magnetic field. In addition, we have observed that the orientation the liquid crystal adopts with respect to the nanoparticles can result in a phase transition that takes the liquid crystal to a more disordered and symmetric phase that favors the rotation, as happens in the smectic-nematic transition, observed in the sample with APTS. We relate the disordering to the changes observed in the transition for the liquid crystal and this termination to recent heat capacity measurements by Cordoyiannis et al. [1]. References [1] Cordoyiannis, G., Kurihara, L.K., Martinez-Miranda, L. J, Glorieux, C., Thoen, J., submitted to PRE (2008).

  19. Photometric Study of Uranian Satellites

    NASA Technical Reports Server (NTRS)

    Kesten, Philip R.

    1998-01-01

    The best summary of my work at NASA is expressed in the following abstract, submitted the Division for Planetary Science of the American Astronomical Society and to be presented at the annual meeting in Madison in October. We report photometric measurements of Uranian satellites Miranda, Ariel, Umbriel and Titania (10.4 Aug. 1995), and Neptune's satellite Triton (21.2 Sept. 1995) with the infrared camera (IRCAM) and standard J (1.13 - 1.42 microns), H (1.53 - 1.81 microns), and K (2.00 - 2.41 microns) filters at the 3.8-m UKIRT telescope on Mauna Kea. The individual images frames are 256 x 256 pixels with a platescale of .286 arcsec/pixel, resulting in a 1.22 arc min field of view. This summer brought the IR photometry measurements nearly to a close. As indicated by the abstract above, I will present this work at the annual DPS meeting in October. In anticipation of the opening of the new Carl Sagan Laboratory for Cosmochemisty, of which I will be a participating member, I also devoted a considerable fraction of the summer to learning the biochemistry which underlies the experiments to be conducted. To put the end of the summary close to the beginning, it was a most productive summer.

  20. Prospero's paper.

    PubMed

    Hildebrand, P

    2001-12-01

    The writer proposes that the interplay between the hermeneutics of psychoanalysis and literature can illuminate understanding of the transference and countertransference at large in an analytic treatment. Writing about the work with a young woman who had been persistently sexually abused as a child and who developed anorexia in her adolescence so severe that her life was endangered both by the illness and by attempts at suicide, the author finds his reading of Shakespeare's The Tempest a powerful informant to the work. Interpreting the object relations represented by Prospero and Miranda and the process of their integration into new mental structures lends the analytic work an additional level of understanding, in particular in relation to the oedipal bond between patient and analyst. When the analyst is confronted by the imminence of his own death towards the end of the analysis, his reading of Prospero's relinquishment of his magical powers and his release of his daughter into sexual maturity and independence helps the patient to replace her destructive inner objects with more reparative and benign ones as she develops a capacity for concern and mourning. PMID:11802693

  1. Confessions and expert testimony.

    PubMed

    Weiss, Kenneth J

    2003-01-01

    In this clinical paper, the author discusses criminal confessions from the point of view of the expert witness who may be asked to comment on the reliability of the statement and waiver of rights. From the time a suspect is in police custody, constitutional protections against self-incrimination and for due process are in place. The Supreme Court set the standard for these situations in the 1966 Miranda v. Arizona decision. Although it has long been criticized by law enforcement, the decision was upheld in the 2000 decision in Dickerson v. U.S. For a waiver of rights to be valid, it must be a knowing, intelligent, and voluntary decision. Voluntariness is an equation of objective and subjective variables. Treatment by police, physical conditions of interrogation, the suspect's experience and mental state can alter the reliability of a confession. Accordingly, the author has devised a mnemonic for the recognition of conditions that may give rise to expert testimony. The conditions are: Mental illness, Intoxication, Retardation, Acquiescence, Narcotic withdrawal, Deception, and Abuse. These are discussed, supported by examples from the author's practice.

  2. Regulated nuclear export of the homeodomain transcription factor Prospero.

    PubMed

    Demidenko, Z; Badenhorst, P; Jones, T; Bi, X; Mortin, M A

    2001-04-01

    Subcellular distribution of the Prospero protein is dynamically regulated during Drosophila embryonic nervous system development. Prospero is first detected in neuroblasts where it becomes cortically localized and tethered by the adapter protein, Miranda. After division, Prospero enters the nucleus of daughter ganglion mother cells where it functions as a transcription factor. We have isolated a mutation that removes the C-terminal 30 amino acids from the highly conserved 100 amino acid Prospero domain. Molecular dissection of the homeo- and Prospero domains, and expression of chimeric Prospero proteins in mammalian and insect cultured cells indicates that Prospero contains a nuclear export signal that is masked by the Prospero domain. Nuclear export of Prospero, which is sensitive to the drug leptomycin B, is mediated by Exportin. Mutation of the nuclear export signal-mask in Drosophila embryos prevents Prospero nuclear localization in ganglion mother cells. We propose that a combination of cortical tethering and regulated nuclear export controls Prospero subcellular distribution and function in all higher eukaryotes. PMID:11262236

  3. Formation and Dynamics of Circumbinary Planets

    NASA Astrophysics Data System (ADS)

    Lai, Dong

    2016-05-01

    The discovery of more than a dozen transiting circumbinary planets provides new constraints on the planet formation and migration processes in circumbinary disks and also raises a number of puzzles. I will discuss several recent works related to circumbinary planets and disks. (1) New long-duration hydro simulations of circumbinary disks (R.Miranda, D.Lai and D.Munoz 2016). The simulations reveal that the inner circumbinary disk may develop appreciable eccentricity and precesseses coherently -- these features are bound to have a strong impact on planet-disk interaction. (2) The disruption of planetary orbits through evection resonances with an external companion (W.Xu and D.Lai 2016a). This may help explain the lack of transiting planets around very compact stellar binaries (D.Munoz and D.Lai 2015). (3) The stability of mean-motion resonance capture as planets migrate inwards in a circumbinary disk. This relates to the pile-up of planets near the stability limit as observed in the sample of transiting circumbinary planets (W.Xu and D.Lai 2016b).

  4. MAGIA, a web-based tool for miRNA and Genes Integrated Analysis

    PubMed Central

    Sales, Gabriele; Coppe, Alessandro; Bisognin, Andrea; Biasiolo, Marta; Bortoluzzi, Stefania; Romualdi, Chiara

    2010-01-01

    MAGIA (miRNA and genes integrated analysis) is a novel web tool for the integrative analysis of target predictions, miRNA and gene expression data. MAGIA is divided into two parts: the query section allows the user to retrieve and browse updated miRNA target predictions computed with a number of different algorithms (PITA, miRanda and Target Scan) and Boolean combinations thereof. The analysis section comprises a multistep procedure for (i) direct integration through different functional measures (parametric and non-parametric correlation indexes, a variational Bayesian model, mutual information and a meta-analysis approach based on P-value combination) of mRNA and miRNA expression data, (ii) construction of bipartite regulatory network of the best miRNA and mRNA putative interactions and (iii) retrieval of information available in several public databases of genes, miRNAs and diseases and via scientific literature text-mining. MAGIA is freely available for Academic users at http://gencomp.bio.unipd.it/magia. PMID:20484379

  5. MAGIA, a web-based tool for miRNA and Genes Integrated Analysis.

    PubMed

    Sales, Gabriele; Coppe, Alessandro; Bisognin, Andrea; Biasiolo, Marta; Bortoluzzi, Stefania; Romualdi, Chiara

    2010-07-01

    MAGIA (miRNA and genes integrated analysis) is a novel web tool for the integrative analysis of target predictions, miRNA and gene expression data. MAGIA is divided into two parts: the query section allows the user to retrieve and browse updated miRNA target predictions computed with a number of different algorithms (PITA, miRanda and Target Scan) and Boolean combinations thereof. The analysis section comprises a multistep procedure for (i) direct integration through different functional measures (parametric and non-parametric correlation indexes, a variational Bayesian model, mutual information and a meta-analysis approach based on P-value combination) of mRNA and miRNA expression data, (ii) construction of bipartite regulatory network of the best miRNA and mRNA putative interactions and (iii) retrieval of information available in several public databases of genes, miRNAs and diseases and via scientific literature text-mining. MAGIA is freely available for Academic users at http://gencomp.bio.unipd.it/magia.

  6. Measles outbreak in Venezuela: a new challenge to postelimination surveillance and control?

    PubMed

    Sarmiento, Héctor; Cobo, Oswaldo Barrezueta; Morice, Ana; Zapata, Roger; Benitez, María Victoria; Castillo-Solórzano, Carlos

    2011-09-01

    The circulation of wild measles virus was interrupted in Venezuela in February 2007 after the catch-up vaccination (1994) and monitoring (1998) and in response to the measles outbreak in 2001. Traditionally, the routine coverage with measles-mumps-rubella vaccine does not exceed 85%. In February 2006, a measles outbreak started by importation in the State Miranda; this extended to 7 states and lasted 50 weeks with an intermediate period of 17 weeks without reported cases. New cases were reported in the States Guarico and Amazon. The pattern of circulation of the silent period was determined through the use of retrospective search for measles; this showed that 57% of suspected cases did not enter the surveillance system. Molecular epidemiology made it possible to identify B3 as only genotype, which also circulated in Spain. The epidemiological and clinical characteristics of measles have been modified; these determine outbreaks identified late, of slow expansion, silent, and with limited case-fatality, compared with classical outbreaks. The outbreak spread by that behavior was not recognized and the classical control measures did not result. The beginning of a broader and intense vaccination was delayed, partly by weaknesses in the sensitivity of the system. It is crucial to recognize the new behavior of measles and the effectiveness of the classical control measures, and especially to establish criteria for interruption of the circulation to control an outbreak in this stage of elimination.

  7. Identification of the microRNA networks contributing to macrophage differentiation and function

    PubMed Central

    Zhou, Hong; Zhang, Jie; Eyers, Fiona; Xiang, Yang; Herbert, Cristan; Tay, Hock L.

    2016-01-01

    Limited evidence is available about the specific miRNA networks that regulate differentiation of specific immune cells. In this study, we characterized miRNA expression and associated alterations in expression with putative mRNA targets that are critical during differentiation of macrophages. In an effort to map the dynamic changes in the bone marrow (BM), we profiled whole BM cultures during differentiation into macrophages. We identified 112 miRNAs with expression patterns that were differentially regulated 5-fold or more during BMDM development. With TargetScan and MeSH databases, we identified 1267 transcripts involved in 30 canonical pathways linked to macrophage biology as potentially regulated by these specific 112 miRNAs. Furthermore, by employing miRanda and Ingenuity Pathways Analysis (IPA) analysis systems, we identified 18 miRNAs that are temporally linked to the expression of CSF1R, CD36, MSR1 and SCARB1; 7 miRNAs linked to the regulation of the transcription factors RUNX1 and PU.1, and 14 miRNAs target the nuclear receptor PPARα and PPARγ. This novel information provides an important reference resource for further study of the functional links between miRNAs and their target mRNAs for the regulation of differentiation and function of macrophages. PMID:27119502

  8. Measuring distances between complex networks

    NASA Astrophysics Data System (ADS)

    Andrade, Roberto F. S.; Miranda, José G. V.; Pinho, Suani T. R.; Lobão, Thierry Petit

    2008-08-01

    A previously introduced concept of higher order neighborhoods in complex networks, [R.F.S. Andrade, J.G.V. Miranda, T.P. Lobão, Phys. Rev. E 73 (2006) 046101] is used to define a distance between networks with the same number of nodes. With such measure, expressed in terms of the matrix elements of the neighborhood matrices of each network, it is possible to compare, in a quantitative way, how far apart in the space of neighborhood matrices two networks are. The distance between these matrices depends on both the network topologies and the adopted node numberings. While the numbering of one network is fixed, a Monte Carlo algorithm is used to find the best numbering of the other network, in the sense that it minimizes the distance between the matrices. The minimal value found for the distance reflects differences in the neighborhood structures of the two networks that arise only from distinct topologies. This procedure ends up by providing a projection of the first network on the pattern of the second one. Examples are worked out allowing for a quantitative comparison for distances among distinct networks, as well as among distinct realizations of random networks.

  9. Computational prediction of MicroRNAs targeting GABA receptors and experimental verification of miR-181, miR-216 and miR-203 targets in GABA-A receptor

    PubMed Central

    2012-01-01

    Background GABA receptors are well known as the inhibitory receptors in the central nervous system and are also found in peripheral tissues. We have previously shown that GABA receptors are involved in lung development and fluid homeostasis. However, the microRNAs that regulate GABA receptors have not yet been identified. Results In this study, we used the online software, TargetScan and miRanda, to query the microRNAs that directly target GABA receptors and then selected some of them to verify experimentally using 3'-UTR reporter assays. Computational approaches predict many microRNA binding sites on the 3'-UTR of GABAA receptors, but not on GABAC receptors. 3'-UTR reporter assays only verified miR-181, miR-216, and miR-203 as the microRNAs that target GABA receptor α1-subunit among 10 microRNAs tested. Conclusions Our studies reinforce that microRNA target prediction needs to be verified experimentally. The identification of microRNAs that target GABA receptors provides a basis for further studies of post-transcriptional regulation of GABA receptors. PMID:22321448

  10. Pancreatic Acinar Cells Employ miRNAs as Mediators of Intercellular Communication to Participate in the Regulation of Pancreatitis-Associated Macrophage Activation

    PubMed Central

    Zhao, Yong; Wang, Hao; Qiao, Xin; Sun, Bei

    2016-01-01

    Macrophage activation plays an important role in the inflammatory response in acute pancreatitis. In the present study, the activation of AR42J pancreatic acinar cells was induced by taurolithocholate treatment. The results showed that the culture medium from the activated AR42J cells significantly enhanced NFκB activation in the macrophages compared to that without taurolithocholate treatment. Additionally, the precipitates obtained from ultracentrifugation of the culture media that were rich in exosomes were markedly more potent in activating macrophages compared with the supernatant fraction lacking exosomes. The results indicated that the mediators carried by the exosomes played important roles in macrophage activation. Exosomal miRNAs were extracted and examined using microarrays. A total of 115 differentially expressed miRNAs were identified, and 30 showed upregulated expression, while 85 displayed downregulated expression. Target genes of the differentially expressed miRNAs were predicted using TargetScan, MiRanda, and PicTar software programs. The putative target genes were subjected to KEGG functional analysis. The functions of the target genes were primarily enriched in MAPK pathways. Specifically, the target genes regulated macrophage activation through the TRAF6-TAB2-TAK1-NIK/IKK-NFκB pathway. As the mediators of signal transduction, miRNAs and their predicted target mRNAs regulate every step in the MAPK pathway. PMID:27546996

  11. Ancient Male Recombination Shaped Genetic Diversity of Neo-Y Chromosome in Drosophila albomicans.

    PubMed

    Satomura, Kazuhiro; Tamura, Koichiro

    2016-02-01

    Researchers studying Y chromosome evolution have drawn attention to neo-Y chromosomes in Drosophila species due to their resembling the initial stage of Y chromosome evolution. In the studies of neo-Y chromosome of Drosophila miranda, the extremely low genetic diversity observed suggested various modes of natural selection acting on the nonrecombining genome. However, alternative possibility may come from its peculiar origin from a single chromosomal fusion event with male achiasmy, which potentially caused and maintained the low genetic diversity of the neo-Y chromosome. Here, we report a real case where a neo-Y chromosome is in transition from an autosome to a typical Y chromosome. The neo-Y chromosome of Drosophila albomicans harbored a rich genetic diversity comparable to its gametologous neo-X chromosome and an autosome in the same genome. Analyzing sequence variations in 53 genes and measuring recombination rates between pairs of loci by cross experiments, we elucidated the evolutionary scenario of the neo-Y chromosome of D. albomicans having high genetic diversity without assuming selective force, i.e., it originated from a single chromosomal fusion event, experienced meiotic recombination during the initial stage of evolution and diverged from neo-X chromosome by the suppression of recombination tens or a few hundreds of thousand years ago. Consequently, the observed high genetic diversity on the neo-Y chromosome suggested a strong effect of meiotic recombination to introduce genetic variations into the newly arisen sex chromosome. PMID:26494844

  12. A topological proof of chaos for two nonlinear heterogeneous triopoly game models.

    PubMed

    Pireddu, Marina

    2016-08-01

    We rigorously prove the existence of chaotic dynamics for two nonlinear Cournot triopoly game models with heterogeneous players, for which in the existing literature the presence of complex phenomena and strange attractors has been shown via numerical simulations. In the first model that we analyze, costs are linear but the demand function is isoelastic, while, in the second model, the demand function is linear and production costs are quadratic. As concerns the decisional mechanisms adopted by the firms, in both models one firm adopts a myopic adjustment mechanism, considering the marginal profit of the last period; the second firm maximizes its own expected profit under the assumption that the competitors' production levels will not vary with respect to the previous period; the third firm acts adaptively, changing its output proportionally to the difference between its own output in the previous period and the naive expectation value. The topological method we employ in our analysis is the so-called "Stretching Along the Paths" technique, based on the Poincaré-Miranda Theorem and the properties of the cutting surfaces, which allows to prove the existence of a semi-conjugacy between the system under consideration and the Bernoulli shift, so that the former inherits from the latter several crucial chaotic features, among which a positive topological entropy. PMID:27586602

  13. Basic cytogenetics and physical mapping of 5S and 18S ribosomal genes in Hoplias malabaricus (Osteichthyes, Characiformes, Erythrinidae) from isolated natural lagoons: a conserved karyomorph along the Iguaçu river basin.

    PubMed

    Gemi, Gisele; Lui, Roberto Laridondo; Treco, Fernando Rodrigo; Paiz, Leonardo Marcel; Moresco, Rafaela Maria; Margarido, Vladimir Pavan

    2014-01-01

    Erythrinidae include Neotropical teleost fish that are widely distributed in South America. Hoplias Gill, 1903 include two large groups: H. malabaricus Bloch, 1794 and H. lacerdae Miranda Ribeiro, 1908. Hoplias malabaricus is characterized by remarkable karyotype diversity, with some karyomorphs widely distributed geographically while others are more restricted to certain river basins. Cytogenetic analyzes were performed in a population of Hoplias malabaricus from the Wildlife Refuge of Campos de Palmas, the Iguaçu River basin. The specimens showed diploid number of 42 chromosomes (24m+18sm) without differentiated sex chromosomes system. The impregnation by silver nitrate showed multiple AgNORs. Seven pairs (4, 7, 10, 13, 16, 20 and 21) carrying 18S rDNA were detected by FISH. Heterochromatin was verified in the centromeric and pericentromeric region of most chromosomes and the terminal region of some pairs. FISH with 5S rDNA probes showed two chromosome pairs carrying these sites in the interstitial region (8 and 14). The data obtained in this study are similar to those found for two other populations of H. malabaricus already studied in the basin of the Iguaçu River, confirming the hypothesis that this species is natural, not having been introduced, as well as having an intrinsic characteristic, such as the largest number of sites of 18S rDNA.

  14. An overview of the Defence Research Agency photovoltaic programme

    NASA Technical Reports Server (NTRS)

    Goodbody, C.; Davies, M. A. H.

    1993-01-01

    The Defense Research Agency (DRA) has been active in the photovoltaic field since the early 1960's, then as the Royal Aircraft Establishment (RAE). The early work was aimed at developing silicon cells, solar panels, and light-weight flexible arrays in support of the 'UK' and 'X' series of British scientific and technology satellites, for which the RAE was either the design authority or technical advisor. The X3 satellite - Prospero, launched in 1971 test flew 50 micron wrap-round silicon cells. The X4 satellite - Miranda, launched in 1974 test flew a deployable flexible silicon array which was developed at the DRA. During this period an extensive range of test equipment was developed which was maintained, modernized, and extended to date. Following a period of reduced activity in the late 1970's and early 1980's the current program evolved. The programs that have been undertaken since 1983 are briefly summarized. These range from various cell developments, new types of coverglasses, flight experiments, radiation testing, primary cell calibration, and environmental testing. The current photovoltaic program is mainly funded by the UK Ministry of Defence and by the Department of Trade and Industry through the British National Space Center (BNSC). The program is aimed at research and development, both internally and with industry, to meet the customer's technical objectives and requirements and to provide them with technical advice. The facilities are also being used on contract work for various national and international organizations.

  15. Construction and analysis of cardiac hypertrophy-associated lncRNA-mRNA network based on competitive endogenous RNA reveal functional lncRNAs in cardiac hypertrophy

    PubMed Central

    Liu, Yan; Pan, Hao; Qi, Han-ping; Cao, Yong-gang; Zhao, Jian-mei; Li, Shang; Guo, Jing; Sun, Hong-li; Li, Chun-quan

    2016-01-01

    Cardiac hypertrophy (CH) could increase cardiac after-load and lead to heart failure. Recent studies have suggested that long non-coding RNA (lncRNA) played a crucial role in the process of the cardiac hypertrophy, such as Mhrt, TERMINATOR. Some studies have further found a new interacting mechanism, competitive endogenous RNA (ceRNA), of which lncRNA could interact with micro-RNAs (miRNA) and indirectly interact with mRNAs through competing interactions. However, the mechanism of ceRNA regulated by lncRNA in the CH remained unclear. In our study, we generated a global triple network containing mRNA, miRNA and lncRNA, and extracted a CH related lncRNA-mRNA network (CHLMN) through integrating the data from starbase, miRanda database and gene expression profile. Based on the ceRNA mechanism, we analyzed the characters of CHLMN and found that 3 lncRNAs (SLC26A4-AS1, RP11-344E13.3 and MAGI1-IT1) were high related to CH. We further performed cluster module analysis and random walk with restart for the CHLMN, finally 14 lncRNAs had been discovered as the potential CH related disease genes. Our results showed that lncRNA played an important role in the CH and could shed new light to the understanding underlying mechanisms of the CH. PMID:26872060

  16. Universal reaction rates for ultracold molecular collisions

    NASA Astrophysics Data System (ADS)

    Julienne, Paul; Idziaszek, Zbigniew

    2010-03-01

    We offer a simple yet general model of reactive collisions using a quantum defect framework based on the separation of the collision dynamics into long-range and a short-range parts [1]. Two dimensionless quantum defect parameters s and y are used to characterize the S-matrix for a given entrance channel; s represents a phase parameter and y the probability of short-range reaction. The simple analytic expressions we obtain give universal values for s-wave and p-wave collision rates for a van der Waals potential when y approaches unity. In this limit, reaction rates are governed entirely by the threshold laws governing the quantum transmission of the long range potential and depend only on the van der Waals coefficient. The universal rate constants explain the magnitude of the observed rate constants for reactive collisions of fermionic KRb + KRb or K + KRb [2]. In contrast, reaction rates will be non-universal and depend strongly on the phase parameter s if the short range reaction probability is low, y << 1. [1] Z. Idziaszek and P. S. Julienne, arXiv:0912.0370. [2] S. Ospelkaus, K.-K. Ni, D. Wang, M. H. G. de Miranda, B. Neyenhuis, G. Qu'em'ener, P. S. Julienne, J. L. Bohn, D. S. Jin, and J. Ye, arXiv:0912.3854.

  17. A topological proof of chaos for two nonlinear heterogeneous triopoly game models

    NASA Astrophysics Data System (ADS)

    Pireddu, Marina

    2016-08-01

    We rigorously prove the existence of chaotic dynamics for two nonlinear Cournot triopoly game models with heterogeneous players, for which in the existing literature the presence of complex phenomena and strange attractors has been shown via numerical simulations. In the first model that we analyze, costs are linear but the demand function is isoelastic, while, in the second model, the demand function is linear and production costs are quadratic. As concerns the decisional mechanisms adopted by the firms, in both models one firm adopts a myopic adjustment mechanism, considering the marginal profit of the last period; the second firm maximizes its own expected profit under the assumption that the competitors' production levels will not vary with respect to the previous period; the third firm acts adaptively, changing its output proportionally to the difference between its own output in the previous period and the naive expectation value. The topological method we employ in our analysis is the so-called "Stretching Along the Paths" technique, based on the Poincaré-Miranda Theorem and the properties of the cutting surfaces, which allows to prove the existence of a semi-conjugacy between the system under consideration and the Bernoulli shift, so that the former inherits from the latter several crucial chaotic features, among which a positive topological entropy.

  18. Cyberwar XXI: quantifying the unquantifiable: adaptive AI for next-generation conflict simulations

    NASA Astrophysics Data System (ADS)

    Miranda, Joseph; von Kleinsmid, Peter; Zalewski, Tony

    2004-08-01

    The era of the "Revolution in Military Affairs," "4th Generation Warfare" and "Asymmetric War" requires novel approaches to modeling warfare at the operational and strategic level of modern conflict. For example, "What if, in response to our planned actions, the adversary reacts in such-and-such a manner? What will our response be? What are the possible unintended consequences?" Next generation conflict simulation tools are required to help create and test novel courses of action (COA's) in support of real-world operations. Conflict simulations allow non-lethal and cost-effective exploration of the "what-if" of COA development. The challenge has been to develop an automated decision-support software tool which allows competing COA"s to be compared in simulated dynamic environments. Principal Investigator Joseph Miranda's research is based on modeling an integrated military, economic, social, infrastructure and information (PMESII) environment. The main effort was to develop an adaptive AI engine which models agents operating within an operational-strategic conflict environment. This was implemented in Cyberwar XXI - a simulation which models COA selection in a PMESII environment. Within this framework, agents simulate decision-making processes and provide predictive capability of the potential behavior of Command Entities. The 2003 Iraq is the first scenario ready for V&V testing.

  19. Surface hydrophobicity of slippery zones in the pitchers of two Nepenthes species and a hybrid

    PubMed Central

    Wang, Lixin; Zhou, Qiang

    2016-01-01

    To investigate the hydrophobicity of slippery zones, static contact angle measurement and microstructure observation of slippery surfaces from two Nepenthes species and a hybrid were conducted. Marginally different static contact angles were observed, as the smallest (133.83°) and greatest (143.63°) values were recorded for the N. alata and N. miranda respectively, and the median value (140.40°) was presented for the N. khasiana. The slippery zones under investigation exhibited rather similar surface morphologies, but different structural dimensions. These findings probably suggest that the geometrical dimensions of surface architecture exert primary effects on differences in the hydrophobicity of the slippery zone. Based on the Wenzel and Cassie-Baxter equations, models were proposed to analyze the manner in which geometrical dimensions affect the hydrophobicity of the slippery surfaces. The results of our analysis demonstrated that the different structural dimensions of lunate cells and wax platelets make the slippery zones present different real area of the rough surface and thereby generate somewhat distinguishable hydrophobicity. The results support a supplementary interpretation of surface hydrophobicity in plant leaves, and provide a theoretical foundation for developing bioinspired materials with hydrophobic properties and self-cleaning abilities. PMID:26813707

  20. MicroRNA-23b inhibits enterovirus 71 replication through downregulation of EV71 VPl protein.

    PubMed

    Wen, Bai-ping; Dai, Hong-jian; Yang, Yue-huang; Zhuang, Yu; Sheng, Ru

    2013-01-01

    Enterovirus 71 (EV71) is one of the causative pathogens of hand-foot-and-mouth disease and effective antiviral agents and vaccines against this virus have, to date, not been available. MicroRNAs (miRNAs) are a recently discovered class of RNAs with the function of post-transcriptional gene expression regulation. It has been demonstrated that miRNAs play important roles in the complicated interaction network between virus and host, while few studies have explored the role of miRNAs in EV71 infection. A recent study showed that hsa-miR-23b was downregulated significantly in cell-infected viruses. To address this issue, biological software miRanda was first used to predict possible target sites of miR-23b at EV71 gene sequence, then to confirm it by luciferase assay. miR-23b mimics were transfected to verify its effects on infection of EV71. These results suggest that miR-23b and upregulation of miR-23b inhibited the replication of EV71 by targeting at EV71 3'UTR conserved sequence. Taken together, miR-23b could inhibit EV71 replication through downregulation of EV71 VPl protein. These results may enhance our understanding on the prevention and treatment of hand-foot-and-mouth disease caused by EV71 infection.

  1. Rotation and the internal structures of the major planets and their inner satellites

    NASA Technical Reports Server (NTRS)

    Dermott, S. F.

    1984-01-01

    Measurements of the rotational periods coupled with those of the masses, the mean radii, and the shapes or the gravitational moments (J2 and J4) enable important constraints to be placed on the internal structures of some remote bodies. Values of J2 for Uranus and Neptune have been calculated from the observed precession rates of the narrow eccentric and inclined Uranian rings and of the orbit of Triton, Neptune's massive satellite. Recent observations of the motions of spots have yielded reliable rotational periods for these planets. These observations are used to show that Uranus and Neptune may have quite different internal structures. The shapes of satellites that are close to their primaries may yield information on the degree of internal differentiation of these bodies. Io, Mimas, Enceladus, and Miranda are of interest in this respect. Residuals in the observed precession rates of the Uranian rings, about 0.005 deg/day, that cannot be accounted for by the best-fit model of J2 and J4 may be related directly to observed irregular variations in ring width of magnitude over 2 km and may indicate the existence of shepherding satellites with mass ratios of over 10 to the -10th. If this is the case, then the effects of these satellites on the precession rates of the rings will result in an appreciable uncertainty in the value of J4 for Uranus.

  2. A morphological and molecular study of two species of Raphidascaroides Yamaguti, 1941 (Nematoda: Anisakidae), parasites of doradid catfish (Siluriformes) in South America, with a description of R. moraveci n. sp.

    PubMed

    Pereira, Felipe B; Tavares, Luiz E R; Scholz, Tomáš; Luque, José L

    2015-05-01

    Nematodes of the genus Raphidascaroides Yamaguti, 1941 parasitising doradid catfishes (Siluriformes: Doradidae) in Brazil were studied based on morphological and molecular evaluation of newly collected material. A new species, Raphidascaroides moraveci n. sp., is described from the intestine of Platydoras armatulus (Valenciennes) from River Miranda, River Paraguay basin, Pantanal, Mato Grosso do Sul. The new species differs from all of the congeners in having short spicules (163-217 μm in length) representing less than 1% of the total body length and in the posterior region of cloacal opening covered by small rudimentary spines. In addition, it differs from the other congeneric species in the number and arrangement of the caudal papillae and the structure of lips and tail. Raphidascaroides moraveci n. sp. is the third species described from freshwater fishes and the second one in the Neotropical Region. New morphological data on R. brasiliensis Moravec & Thatcher, 1997 from Megalodoras uranoscopus (Eigenmann & Eigenmann) and Platydoras costatus (Linnaeus) (both new host records) from River Xingu, River Amazon basin, Pará, are provided including scanning electron micrographs of taxonomically important structures. The differentiation of the new species is supported by molecular data (partial sequences of the small and large subunits of the rRNA gene).

  3. MicroRNAs miR-30b, miR-30d, and miR-494 Regulate Human Endometrial Receptivity

    PubMed Central

    Martinez-Conejero, Jose A.; Esteban, Francisco J.; Ruiz-Alonso, Maria; Stavreus-Evers, Anneli; Horcajadas, Jose A.; Salumets, Andres

    2013-01-01

    MicroRNAs (miRNAs) act as important epigenetic posttranscriptional regulators of gene expression. We aimed to gain more understanding of the complex gene expression regulation of endometrial receptivity by analyzing miRNA signatures of fertile human endometria. We set up to analyze miRNA signatures of receptive (LH + 7, n = 4) versus prereceptive (LH + 2, n = 5) endometrium from healthy fertile women. We found hsa-miR-30b and hsa-miR-30d to be significantly upregulated, and hsa-miR-494 and hsa-miR-923 to be downregulated in receptive endometrium. Three algorithms (miRanda, PicTar, and TargetScan) were used for target gene prediction. Functional analyses of the targets using Ingenuity Pathways Analysis and The Database for Annotation, Visualization and Integrated Discovery indicated roles in transcription, cell proliferation and apoptosis, and significant involvement in several relevant pathways, such as axon guidance, Wnt/β-catenin, ERK/MAPK, transforming growth factor β (TGF-β), p53 and leukocyte extravasation. Comparison of predicted miRNA target genes and our previous messenger RNA microarray data resulted in a list of 12 genes, including CAST, CFTR, FGFR2, and LIF that could serve as a panel of genes important for endometrial receptivity. In conclusion, we suggest that a subset of miRNAs and their target genes may play important roles in endometrial receptivity. PMID:22902743

  4. Overexpression of E2F mRNAs associated with gastric cancer progression identified by the transcription factor and miRNA co-regulatory network analysis.

    PubMed

    Zhang, XiaoTian; Ni, ZhaoHui; Duan, ZiPeng; Xin, ZhuoYuan; Wang, HuaiDong; Tan, JiaYi; Wang, GuoQing; Li, Fan

    2015-01-01

    Gene expression is regulated at the transcription and translation levels; thus, both transcription factors (TFs) and microRNAs (miRNA) play roles in regulation of gene expression. This study profiled differentially expressed mRNAs and miRNAs in gastric cancer tissues to construct a TF and miRNA co-regulatory network in order to identify altered genes in gastric cancer progression. A total of 70 cases gastric cancer and paired adjacent normal tissues were subjected to cDNA and miRNA microarray analyses. We obtained 887 up-regulated and 93 down-regulated genes and 41 down-regulated and 4 up-regulated miRNAs in gastric cancer tissues. Using the Transcriptional Regulatory Element Database, we obtained 105 genes that are regulated by the E2F family of genes and using Targetscan, miRanda, miRDB and miRWalk tools, we predicted potential targeting genes of these 45 miRNAs. We then built up the E2F-related TF and miRNA co-regulatory gene network and identified 9 hub-genes. Furthermore, we found that levels of E2F1, 2, 3, 4, 5, and 7 mRNAs associated with gastric cancer cell invasion capacity, and has associated with tumor differentiation. These data showed Overexpression of E2F mRNAs associated with gastric cancer progression.

  5. Ancient Male Recombination Shaped Genetic Diversity of Neo-Y Chromosome in Drosophila albomicans.

    PubMed

    Satomura, Kazuhiro; Tamura, Koichiro

    2016-02-01

    Researchers studying Y chromosome evolution have drawn attention to neo-Y chromosomes in Drosophila species due to their resembling the initial stage of Y chromosome evolution. In the studies of neo-Y chromosome of Drosophila miranda, the extremely low genetic diversity observed suggested various modes of natural selection acting on the nonrecombining genome. However, alternative possibility may come from its peculiar origin from a single chromosomal fusion event with male achiasmy, which potentially caused and maintained the low genetic diversity of the neo-Y chromosome. Here, we report a real case where a neo-Y chromosome is in transition from an autosome to a typical Y chromosome. The neo-Y chromosome of Drosophila albomicans harbored a rich genetic diversity comparable to its gametologous neo-X chromosome and an autosome in the same genome. Analyzing sequence variations in 53 genes and measuring recombination rates between pairs of loci by cross experiments, we elucidated the evolutionary scenario of the neo-Y chromosome of D. albomicans having high genetic diversity without assuming selective force, i.e., it originated from a single chromosomal fusion event, experienced meiotic recombination during the initial stage of evolution and diverged from neo-X chromosome by the suppression of recombination tens or a few hundreds of thousand years ago. Consequently, the observed high genetic diversity on the neo-Y chromosome suggested a strong effect of meiotic recombination to introduce genetic variations into the newly arisen sex chromosome.

  6. Pancreatic Acinar Cells Employ miRNAs as Mediators of Intercellular Communication to Participate in the Regulation of Pancreatitis-Associated Macrophage Activation.

    PubMed

    Zhao, Yong; Wang, Hao; Lu, Ming; Qiao, Xin; Sun, Bei; Zhang, Weihui; Xue, Dongbo

    2016-01-01

    Macrophage activation plays an important role in the inflammatory response in acute pancreatitis. In the present study, the activation of AR42J pancreatic acinar cells was induced by taurolithocholate treatment. The results showed that the culture medium from the activated AR42J cells significantly enhanced NFκB activation in the macrophages compared to that without taurolithocholate treatment. Additionally, the precipitates obtained from ultracentrifugation of the culture media that were rich in exosomes were markedly more potent in activating macrophages compared with the supernatant fraction lacking exosomes. The results indicated that the mediators carried by the exosomes played important roles in macrophage activation. Exosomal miRNAs were extracted and examined using microarrays. A total of 115 differentially expressed miRNAs were identified, and 30 showed upregulated expression, while 85 displayed downregulated expression. Target genes of the differentially expressed miRNAs were predicted using TargetScan, MiRanda, and PicTar software programs. The putative target genes were subjected to KEGG functional analysis. The functions of the target genes were primarily enriched in MAPK pathways. Specifically, the target genes regulated macrophage activation through the TRAF6-TAB2-TAK1-NIK/IKK-NFκB pathway. As the mediators of signal transduction, miRNAs and their predicted target mRNAs regulate every step in the MAPK pathway. PMID:27546996

  7. Plasma observations near uranus: initial results from voyager 2.

    PubMed

    Bridge, H S; Belcher, J W; Coppi, B; Lazarus, A J; McNutt, R L; Olbert, S; Richardson, J D; Sands, M R; Selesnick, R S; Sullivan, J D; Hartle, R E; Ogilvie, K W; Sittler, E C; Bagenal, F; Wolff, R S; Vasyliunas, V M; Siscoe, G L; Goertz, C K; Eviatar, A

    1986-07-01

    Extensive measurements of low-energy positive ions and electrons in the vicinity of Uranus have revealed a fully developed magnetosphere. The magnetospheric plasma has a warm component with a temperature of 4 to 50 electron volts and a peak density of roughly 2 protons per cubic centimeter, and a hot component, with a temperature of a few kiloelectron volts and a peak density of roughly 0.1 proton per cubic centimeter. The warm component is observed both inside and outside of L = 5, whereas the hot component is excluded from the region inside of that L shell. Possible sources of the plasma in the magnetosphere are the extended hydrogen corona, the solar wind, and the ionosphere. The Uranian moons do not appear to be a significant plasma source. The boundary of the hot plasma component at L = 5 may be associated either with Miranda or with the inner limit of a deeply penetrating, solar wind-driven magnetospheric convection system. The Voyager 2 spacecraft repeatedly encountered the plasma sheet in the magnetotail at locations that are consistent with a geometric model for the plasma sheet similar to that at Earth.

  8. Peptide and amino acid transporters are differentially regulated during seed development and germination in faba bean.

    PubMed

    Miranda, Manoela; Borisjuk, Ljudmilla; Tewes, Annegret; Dietrich, Daniela; Rentsch, Doris; Weber, Hans; Wobus, Ulrich

    2003-08-01

    Two peptide transporter (PTR) homologs have been isolated from developing seeds of faba bean (Vicia faba). VfPTR1 was shown to be a functional peptide transporter through complementation of a yeast mutant. Expression patterns of VfPTR1 and VfPTR2 as well as of the amino acid permease VfAAP1 (Miranda et al., 2001) were compared throughout seed development and germination. In developing seeds, the highest levels of VfPTR1 transcripts were reached during midcotyledon development, whereas VfAAP1 transcripts were most abundant during early cotyledon development, before the appearance of storage protein gene transcripts, and were detectable until late cotyledon development. During early germination, VfPTR1 mRNA appeared first in cotyledons and later, during seedling growth, also in axes and roots. Expression of VfPTR2 and VfAAP1 was delayed compared with VfPTR1, and was restricted to the nascent organs of the seedlings. Localization of VfPTR1 transcripts showed that this PTR is temporally and spatially regulated during cotyledon development. In germinating seeds, VfPTR1 mRNA was localized in root hairs and root epidermal cells, suggesting a role in nutrient uptake from the soil. In seedling roots, VfPTR1 was repressed by a dipeptide and by an amino acid, whereas nitrate was without influence.

  9. microRNA expression profiling and bioinformatic analysis of dengue virus‑infected peripheral blood mononuclear cells.

    PubMed

    Qi, Yiming; Li, Ying; Zhang, Lin; Huang, Junqi

    2013-03-01

    Dengue virus (DENV) causes self‑limiting dengue fever (DF), severe dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS). It is generally considered that cytokine storm leads to the increased plasma leakage characteristic of DHF/DSS. In the present study, peripheral blood mononuclear cells (PBMCs) were isolated from blood samples of healthy volunteers and infected with DENV serotype 2 (DENV2). Culture supernatants of DENV2‑infected and -uninfected PBMCs were analyzed using a human cytokine array. Between a 6‑12 h post‑infection, levels of CCL5, IL‑6 and IL‑8 were markedly elevated, while those of TNF‑α decreased. Total RNA isolated from these PBMCs was analyzed by human miRNA microarray to identify differentially expressed microRNAs (miRNAs). Quantitative reverse transcription polymerase chain reaction was used to validate 11 upregulated and 4 downregulated miRNAs. Sanger mibase, miRanda and TargetScan were used to identify 261 common predicted genes. Databases were used to identify homologous sequences on mRNAs of putative target genes that may be directly bound by the miRNAs identified. We found that cytokines and epigenetic regulators may be putative target genes of these miRNAs. Using ingenuity pathway analysis, we noted that canonical pathways, including biological regulation, may be modulated by these miRNAs.

  10. Surface hydrophobicity of slippery zones in the pitchers of two Nepenthes species and a hybrid.

    PubMed

    Wang, Lixin; Zhou, Qiang

    2016-01-01

    To investigate the hydrophobicity of slippery zones, static contact angle measurement and microstructure observation of slippery surfaces from two Nepenthes species and a hybrid were conducted. Marginally different static contact angles were observed, as the smallest (133.83°) and greatest (143.63°) values were recorded for the N. alata and N. miranda respectively, and the median value (140.40°) was presented for the N. khasiana. The slippery zones under investigation exhibited rather similar surface morphologies, but different structural dimensions. These findings probably suggest that the geometrical dimensions of surface architecture exert primary effects on differences in the hydrophobicity of the slippery zone. Based on the Wenzel and Cassie-Baxter equations, models were proposed to analyze the manner in which geometrical dimensions affect the hydrophobicity of the slippery surfaces. The results of our analysis demonstrated that the different structural dimensions of lunate cells and wax platelets make the slippery zones present different real area of the rough surface and thereby generate somewhat distinguishable hydrophobicity. The results support a supplementary interpretation of surface hydrophobicity in plant leaves, and provide a theoretical foundation for developing bioinspired materials with hydrophobic properties and self-cleaning abilities.

  11. Morphometric Analysis of Longipalpis (Diptera: Psychodidae) Complex Populations in Mato Grosso do Sul, Brazil.

    PubMed

    Santos, Mirella F C; Andrade Filho, José D; Fernandes, Carlos E S; Mateus, Nathália L F; Eguchi, Gabriel U; Fernandes, Wedson D; Brazil, Reginaldo P; Oliveira, Everton F; Oliveira, Alessandra G

    2015-05-01

    Owing to the existence of cryptic species that are difficult to distinguish morphologically, the search for new taxonomic characters and methods for identifying and classifying sand flies continues. Lutzomyia longipalpis (Lutz & Neiva, 1912) and Lutzomyia cruzi (Mangabeira, 1938) (Diptera: Psychodidae) are two such species that occur in sympatry in some regions of Mato Grosso do Sul State (MS). Twenty females and twenty males from each of the five populations of Lu. longipalpis and one population of Lu. cruzi from MS were examined. An outlying population of Lu. longipalpis from Estrela de Alagoas, State of Alagoas, was used to compare the degree of divergence among the groups in MS. Specimens were cleared, mounted on slides, identified, and measured using LAS-Leica. The principal component analysis of morphometric characters showed a high degree of variation among females, while males varied to a lower degree. The populations of Alagoas and Miranda demonstrated the greatest variation. The first region, Alagoas, is geographically distant from the others and occurs under distinctly different ecological conditions, which likely accounts for the variation. Further studies should be made to elucidate the factors that contribute to the differences found between the populations of MS.

  12. Mimas: Tectonic structure and geologic history

    NASA Technical Reports Server (NTRS)

    Croft, Steven K.

    1991-01-01

    Mimas, the innermost of the major saturnian satellites, occupies an important place in comparative studies of icy satellites. It is the smallest icy satellite known to have a mostly spherical shape. Smaller icy objects like Hyperion and Puck are generally irregular in shape, while larger ones like Miranda and Enceladus are spherical. Thus Mimas is near the diameter where the combination of increasing surface gravity and internal heating begin to have a significant effect on global structure. The nature and extent of endogenic surface features provide important constraints on the interior structure and history of this transitional body. The major landforms on Mimas are impact craters. Mimas has one of the most heavily cratered surfaces in the solar system. The most prominent single feature on Mimas is Herschel, an unrelaxed complex crater 130 km in diameter. The only other recognized landforms on Mimas are tectonic grooves and lineaments. Groove locations were mapped by Schenk, but without analysis of groove structures or superposition relationships. Mimas' tectonic structures are remapped here in more detail than previously has been done, as part of a general study of tectonic features on icy satellites.

  13. Energetic charged particles in the uranian magnetosphere.

    PubMed

    Stone, E C; Cooper, J F; Cummings, A C; McDonald, F B; Trainor, J H; Lal, N; McGuire, R; Chenette, D L

    1986-07-01

    During the encounter with Uranus, the cosmic ray system on Voyager 2 measured significant fluxes of energetic electrons and protons in the regions of the planets magnetosphere where these particles could be stably trapped. The radial distribution of electrons with energies of megaelectron volts is strongly modulated by the sweeping effects ofthe three major inner satellites Miranda, Ariel, and Umbriel. The phase space density gradient of these electrons indicates that they are diffusing radially inward from a source in the outer magnetosphere or magnetotail. Differences in the energy spectra of protons having energies of approximately 1 to 8 megaelectron volts from two different directions indicate a strong dependence on pitch angle. From the locations of the absorption signatures observed in the electron flux, a centered dipole model for the magnetic field of Uranus with a tilt of 60.1 degrees has been derived, and a rotation period of the planet of 17.4 hours has also been calculated. This model provides independent confirmaton of more precise determinations made by other Voyager experiments.

  14. A morphological and molecular study of two species of Raphidascaroides Yamaguti, 1941 (Nematoda: Anisakidae), parasites of doradid catfish (Siluriformes) in South America, with a description of R. moraveci n. sp.

    PubMed

    Pereira, Felipe B; Tavares, Luiz E R; Scholz, Tomáš; Luque, José L

    2015-05-01

    Nematodes of the genus Raphidascaroides Yamaguti, 1941 parasitising doradid catfishes (Siluriformes: Doradidae) in Brazil were studied based on morphological and molecular evaluation of newly collected material. A new species, Raphidascaroides moraveci n. sp., is described from the intestine of Platydoras armatulus (Valenciennes) from River Miranda, River Paraguay basin, Pantanal, Mato Grosso do Sul. The new species differs from all of the congeners in having short spicules (163-217 μm in length) representing less than 1% of the total body length and in the posterior region of cloacal opening covered by small rudimentary spines. In addition, it differs from the other congeneric species in the number and arrangement of the caudal papillae and the structure of lips and tail. Raphidascaroides moraveci n. sp. is the third species described from freshwater fishes and the second one in the Neotropical Region. New morphological data on R. brasiliensis Moravec & Thatcher, 1997 from Megalodoras uranoscopus (Eigenmann & Eigenmann) and Platydoras costatus (Linnaeus) (both new host records) from River Xingu, River Amazon basin, Pará, are provided including scanning electron micrographs of taxonomically important structures. The differentiation of the new species is supported by molecular data (partial sequences of the small and large subunits of the rRNA gene). PMID:25862032

  15. Comparative chromosomal analysis and evolutionary considerations concerning two species of genus Tatia (Siluriformes, Auchenipteridae)

    PubMed Central

    Lui, Roberto Laridondo; Blanco, Daniel Rodrigues; Margarido, Vladimir Pavan; Troy, Waldo Pinheiro; Filho, Orlando Moreira

    2013-01-01

    Abstract Auchenipteridae is divided in two subfamilies, Centromochlinae and Auchenipterinae. Centromochlinae has 31 valid species, from which 13 are included in the genus Tatia Miranda Ribeiro, 1911. Among these, Tatia jaracatia Pavanelli & Bifi, 2009 and Tatia neivai (Ihering, 1930) are the only two representative species from the Paraná-Paraguay basins. This study aimed to analyze cytogenetically these two species and thus provide the first chromosomal data for the genus. Although Tatia jaracatia and Tatia neivai presented 2n=58 chromosomes, some differences were observed in the karyotypic formula. The heterochromatin was dispersed in the centromeric and terminal regions of most chromosomes of Tatia jaracatia, and only in the terminal region of most chromosomes of Tatia neivai. The AgNORs were detected in the subtelocentric pair 28 for both species, which was confirmed by FISH with 18S rDNA probe. The 5S rDNA sites were detected in four chromosome pairs in Tatia jaracatia and three chromosome pairs in Tatia neivai. Both species of Tatia presented great chromosomal similarities among themselves; however, when compared to other species of Auchenipteridae, it was possible to identify some differences in the karyotype macrostructure, in the heterochromatin distribution pattern and in the number and position of 5S rDNA sites, which until now seems to be intrinsic to the genus Tatia. PMID:24260691

  16. A new genus and species of proteocephalidean tapeworm (Cestoda), first parasite found in the driftwood catfish Tocantinsia piresi (Siluriformes: Auchenipteridae) from Brazil.

    PubMed

    Alves, Philippe Vieira; Chambrier, Alain de; Scholz, Tomas; Luque, Jose Luis

    2015-01-01

    Frezella gen. n. is proposed to accommodate Frezella vaucheri sp. n. from poorly known auchenipterid fish, Tocantinsia piresi (Miranda Ribeiro), from the Xingú River, one of the principal tributaries of the lower Amazon River in Brazil. The new genus belongs to the Proteocephalinae because of the medullary position of the testes, ovary (yet some follicles penetrate to the cortex on the dorsal side), vitelline follicles and uterus. It differs from other proteocephaline genera in the morphology of the scolex, which includes a metascolex composed of two distinct zones: anterior, strongly wrinkled part posterior to the suckers, and posterior, sparsely folded zone. Frezella can also be differentiated by having the internal longitudinal musculature hypertrophied laterally on both sides, the presence of some ovarian follicles in the cortex on the dorsal side and the presence of additional pair of tiny, thin-walled osmoregulatory canals situated slightly dorsomedian to ventral canals. Frezella vaucheri is the first helminth parasite reported from T. piresi, which occurs in the lower reaches of the Amazon and Tocantins River basins in Brazil. PMID:25960550

  17. The Structure of the Uranian Rings and the Search for Rings Around Neptune

    NASA Technical Reports Server (NTRS)

    Elliot, J. L.

    1984-01-01

    The nine narrow rings of Uranus, presently the only confirmed features of this system, have been observed with the diffraction-limited resolution (3.5 km) of ground-based occultations since their discovery in 1977. These data have been used to establish an orbit model, from which the five Keplerian orbit parameters for each ring, the pole of the mean ring plane, and the gravitational harmonic coefficients J sub 2 and J sub 4 have been determined. The rings are typically a few kilometers wide with eccentricities of about 0.001 and inclinations of a few hundredths of a degree, although a few have no measurable eccentricity or inclination. Interesting Voyager investigations would include probing the structure of the rings at higher spatial resolution, searching for new rings in the system (including inter-ring material), locating the postulated shepherd satellites, and searching for satellites inside the orbit of Miranda that might have dynamical influence on the rings. The high precision (approx 2 km) of the ring orbits might prove useful for spacecraft navigation. For Neptune, occultation searches have revealed no rings to a limit of a few hundreths optical depth, within a few hundred kilometers from the top of the planet's atmosphere (for equatorial rings).

  18. Paleoenvironments and age of the Talampaya Formation: The Permo-Triassic boundary in northwestern Argentina

    NASA Astrophysics Data System (ADS)

    Gulbranson, E. L.; Ciccioli, P. L.; Montañez, I. P.; Marenssi, S. A.; Limarino, C. O.; Schmitz, M. D.; Davydov, V.

    2015-11-01

    The Talampaya Formation is the basal unit of the Ischigualasto-Villa Unión rift system and has been traditionally assigned to the Triassic based on stratigraphic relationships. A median U-Pb age of 252.38 (+0.09/-0.22) Ma was obtained from volcanic zircons collected from a tuff bed close to the top of this unit at the Bordo Atravesado locality in the Cuesta de Miranda area (La Rioja, Argentina). This radiometric age is very close to the accepted Permian-Triassic boundary indicating that, at least in this locality, sedimentation occurred during the Late Permian but may have extended into the earliest Triassic. This new evidence indicates that the onset of the extensional event that gave rise to the rift basins in western Argentina started during the Permian. Detailed sedimentological studies of the 260 m thick Talampaya Formation allowed subdividing the succession into seven facies associations grouped into three evolutionary stages indicating that sedimentary environments initially evolved from alluvial fans to a braided river system. Subsequent intrabasinal volcanism associated with sediment deposition by low-to moderate-sinuosity rivers is recorded in the lower third of the column. The middle and upper part of the unit captures the evolution from ephemeral fluvial systems with an eolian interval to an ephemeral clastic lake with intermittent volcanic ash deposits. These changes indicate a progressive lowering of the landscape and a transition towards arid or semiarid conditions.

  19. Identification of the microRNA networks contributing to macrophage differentiation and function.

    PubMed

    Zhou, Hong; Zhang, Jie; Eyers, Fiona; Xiang, Yang; Herbert, Cristan; Tay, Hock L; Foster, Paul S; Yang, Ming

    2016-05-17

    Limited evidence is available about the specific miRNA networks that regulate differentiation of specific immune cells. In this study, we characterized miRNA expression and associated alterations in expression with putative mRNA targets that are critical during differentiation of macrophages. In an effort to map the dynamic changes in the bone marrow (BM), we profiled whole BM cultures during differentiation into macrophages. We identified 112 miRNAs with expression patterns that were differentially regulated 5-fold or more during BMDM development. With TargetScan and MeSH databases, we identified 1267 transcripts involved in 30 canonical pathways linked to macrophage biology as potentially regulated by these specific 112 miRNAs. Furthermore, by employing miRanda and Ingenuity Pathways Analysis (IPA) analysis systems, we identified 18 miRNAs that are temporally linked to the expression of CSF1R, CD36, MSR1 and SCARB1; 7 miRNAs linked to the regulation of the transcription factors RUNX1 and PU.1, and 14 miRNAs target the nuclear receptor PPARα and PPARγ. This novel information provides an important reference resource for further study of the functional links between miRNAs and their target mRNAs for the regulation of differentiation and function of macrophages. PMID:27119502

  20. Microsatellite typing of ancient maize: insights into the history of agriculture in southern South America.

    PubMed

    Lia, Verónica V; Confalonieri, Viviana A; Ratto, Norma; Hernández, Julián A Cámara; Alzogaray, Ana M Miante; Poggio, Lidia; Brown, Terence A

    2007-02-22

    Archaeological maize specimens from Andean sites of southern South America, dating from 400 to 1400 years before present, were tested for the presence of ancient DNA and three microsatellite loci were typed in the specimens that gave positive results. Genotypes were also obtained for 146 individuals corresponding to modern landraces currently cultivated in the same areas and for 21 plants from Argentinian lowland races. Sequence analysis of cloned ancient DNA products revealed a high incidence of substitutions appearing in only one clone, with transitions prevalent. In the archaeological specimens, there was no evidence of polymorphism at any one of the three microsatellite loci: each exhibited a single allelic variant, identical to the most frequent allele found in contemporary populations belonging to races Amarillo Chico, Amarillo Grande, Blanco and Altiplano. Affiliation between ancient specimens and a set of races from the Andean complex was further supported by assignment tests. The striking genetic uniformity displayed by the ancient specimens and their close relationship with the Andean complex suggest that the latter gene pool has predominated in the western regions of southern South America for at least the past 1400 years. The results support hypotheses suggesting that maize cultivation initially spread into South America via a highland route, rather than through the lowlands.

  1. The role of landowners in jaguar conservation in Sonora, Mexico.

    PubMed

    Rosas-Rosas, Octavio C; Valdez, Raul

    2010-04-01

    The northernmost known breeding population of jaguars occurs in the municipality of Nácori Chico, Sonora, Mexico about 270 km from the United States-Mexico border and may be the source from which jaguars sighted in the United States dispersed. Since 1999 at least 11 jaguars (Panthera onca) had been illegally killed in the area due to predator control programs. We initiated a jaguar landowner-based conservation plan in 2004. The eight participating landowners agreed to suspend predator control programs targeting jaguars and pumas (Puma concolor) only if cattle losses were compensated. A private outfitter, with the consent of landowners, initiated white-tailed deer (Odocoileus virginianus) hunts in 2004 and agreed to pay the group of participating landowners US$1500 for every deer hunt permit sold. The funds paid to the landowners from deer hunts were sufficient to convince landowners to suspend all predator-control efforts of jaguars and pumas. The involvement of landowners in the jaguar conservation program in northeastern Sonora is a successful, private, wildlife-conservation initiative that provides an example for jaguar conservation efforts in northern Mexico.

  2. Airborne gamma-ray spectrometer and magnetometer survey: Susanville quadrangle, California. Final report

    SciTech Connect

    Not Available

    1981-05-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Susanville, California, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1642.8 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  3. Wildfires in Bamboo-Dominated Amazonian Forest: Impacts on Above-Ground Biomass and Biodiversity

    PubMed Central

    Barlow, Jos; Silveira, Juliana M.; Mestre, Luiz A. M.; Andrade, Rafael B.; Camacho D'Andrea, Gabriela; Louzada, Julio; Vaz-de-Mello, Fernando Z.; Numata, Izaya; Lacau, Sébastien; Cochrane, Mark A.

    2012-01-01

    Fire has become an increasingly important disturbance event in south-western Amazonia. We conducted the first assessment of the ecological impacts of these wildfires in 2008, sampling forest structure and biodiversity along twelve 500 m transects in the Chico Mendes Extractive Reserve, Acre, Brazil. Six transects were placed in unburned forests and six were in forests that burned during a series of forest fires that occurred from August to October 2005. Normalized Burn Ratio (NBR) calculations, based on Landsat reflectance data, indicate that all transects were similar prior to the fires. We sampled understorey and canopy vegetation, birds using both mist nets and point counts, coprophagous dung beetles and the leaf-litter ant fauna. Fire had limited influence upon either faunal or floral species richness or community structure responses, and stems <10 cm DBH were the only group to show highly significant (p = 0.001) community turnover in burned forests. Mean aboveground live biomass was statistically indistinguishable in the unburned and burned plots, although there was a significant increase in the total abundance of dead stems in burned plots. Comparisons with previous studies suggest that wildfires had much less effect upon forest structure and biodiversity in these south-western Amazonian forests than in central and eastern Amazonia, where most fire research has been undertaken to date. We discuss potential reasons for the apparent greater resilience of our study plots to wildfire, examining the role of fire intensity, bamboo dominance, background rates of disturbance, landscape and soil conditions. PMID:22428035

  4. Trace elements as fingerprint of lake of Provenance and of species of some native and exotic fish of northern Patagonian lakes.

    PubMed

    Arribére, M A; Guevara, S Ribeiro; Bubach, D F; Vigliano, P H

    2006-01-01

    A survey of trace element contents in fish muscle and liver was performed in different lakes of two northern Patagonian national parks: Nahuel Huapi and Los Alerces national parks. The aim of the work was to obtain the first set of reference data on elements that are not liable to be disturbed by human activities and to identify compositional patterns related to the species and site of collection. The species studied are native creole perch and velvet catfish and exotic brown trout, rainbow trout, and brook trout. The elements analyzed are Br, Cs, Fe, Rb, Se, Na, and Zn. Trace elements in muscle of brown trout, rainbow trout, and creole perch showed statistical patterns that allow one to identify the national park of origin, as well as which of the lakes (Traful, Espejo Chico, or the Nahuel Huapi-Moreno system) of the Nahuel Huapi National Park from which they come. Contents in the liver provide similar but less clear patterns than contents in muscle; however, in some particular cases, they provide additional information. Trace element contents in muscle are also good indicators of the species collected within a lake.

  5. Origins of water and solutes in and north of the Norris-Mammoth Corridor, Yellowstone National Park

    USGS Publications Warehouse

    Kharaka, Yousif; Mariner, Robert; Ambats, Gil; Evans, William; White, Lloyd; Bullen, Thomas; Kennedy, B. Mack

    1990-01-01

    This study was initiated to investigate the impacts of geothermal development in the Corwin Springs Known Geothermal Resources Area (KGRA) on the hydrothermal features of Yellowstone National Park. To determine possible hydrogeochemical connections, we used the diagnostic stable and radioactive isotopes of several elements, and the chemical and gas compositions of thermal and cold waters from the Norris-Mammoth Corridor and areas north of the Park. The investigations were particularly comprehensive in the Mammoth Hot Springs area, Corwin Springs KGRA, and Chico Hot Springs. The geochemical tools used are still subject to uncertainties of 1 - 5%. Preliminary interpretation of the data, especially the ??D and ??18O values of water, 87Sr/86Sr ratios, ??11B values, composition and isotopes of noble gases and several conservative chemical species would indicate that the waters from Mammoth Hot Springs and La Duke Spring area have evolved chemically and isotopically by reactions with different rock types, and are probably not directly connected. These data indicate that a component (<20%) of water in Bear Creek Springs may be derived from the Mammoth system.

  6. Paleo- and Neoproterozoic magmatic and tectonometamorphic evolution of the Isla Cristalina de Rivera (Nico Pérez Terrane, Uruguay)

    NASA Astrophysics Data System (ADS)

    Oyhantçabal, Pedro; Wagner-Eimer, Martin; Wemmer, Klaus; Schulz, Bernhard; Frei, Robert; Siegesmund, Siegfried

    2012-10-01

    The Isla Cristalina de Rivera crystalline complex in northeastern Uruguay underwent a multistage magmatic and metamorphic evolution. Based on SHRIMP U-Pb zircon, Th-U-Pb monazite (CHIME-EPMA method) and K-Ar age data from key units several events can be recognized: (1) multistage magmatism at 2,171-2,114 Ma, recorded on zircon of the granulitic orthogneisses and their 2,093-2,077 Ma overgrowths; (2) a distinct amphibolite facies metamorphism at ~1,980 Ma, recorded by monazite; (3) greenschist facies reworking and shearing at ca. 606 Ma (monazite and K-Ar on muscovite) along the Rivera Shear Zone, and finally (4) intrusion of the post-tectonic Sobresaliente and Las Flores granites at around 585 Ma. Lithological similarities, geographic proximity and coeval magmatic and metamorphic events indicate a similar tectonometamorphic evolution for the Isla Cristalina de Rivera, the Valentines Block in Uruguay and the Santa María Chico Granulitic Complex in southern Brazil, since at least 2.1 Ga.

  7. Recording and Analysis of the Rec Yard at Alcatraz Island

    NASA Astrophysics Data System (ADS)

    Warden, R.; Toz, T. K.; Everett, M.; DeSmet, T.; Billingsley, A.; Hagin, J.

    2013-07-01

    In the summer of 2012 students and professors from the Concrete Industry Management (CIM ) program at California State University Chico, along with their partners at National Park Service, invited Texas A&M students and professors to join forces and perform a condition assessment of the Recreation Yard at Alcatraz Island in San Francisco Bay. The Recreation Yard is a heavily visited area by tourists who are drawn to the island because of its history as a maximum security prison in the 20th c. Because of its history, first as a military fort in the 19thc., later as a military prison, and finally as a federal prison, many difficult historical and preservation related questions exist. This team was formed to begin research on the historical and preservation questions with respect to the Recreation Yard. This paper and presentation will focus on the integration of documentation technologies employed to aid the research necessary for answering preservation and historical questions regarding the recreations yard. Since that yard was constructed on top of the historic 19th c masonry fort it was requested that we also seek the location of tunnels below the Recreation Yard and their relationship with the walls. Teams were formed to perform Non-destructive testing of concrete walls to determine the size and location of rebar, Ground Penetrating Radar for determining the location of the masonry tunnels and photogrammetry and laser scanning to provide both overall and detailed dimensional information of the current state of material decay.

  8. Microsatellite typing of ancient maize: insights into the history of agriculture in southern South America

    PubMed Central

    Lia, Verónica V; Confalonieri, Viviana A; Ratto, Norma; Hernández, Julián A. Cámara; Alzogaray, Ana M. Miante; Poggio, Lidia; Brown, Terence A

    2006-01-01

    Archaeological maize specimens from Andean sites of southern South America, dating from 400 to 1400 years before present, were tested for the presence of ancient DNA and three microsatellite loci were typed in the specimens that gave positive results. Genotypes were also obtained for 146 individuals corresponding to modern landraces currently cultivated in the same areas and for 21 plants from Argentinian lowland races. Sequence analysis of cloned ancient DNA products revealed a high incidence of substitutions appearing in only one clone, with transitions prevalent. In the archaeological specimens, there was no evidence of polymorphism at any one of the three microsatellite loci: each exhibited a single allelic variant, identical to the most frequent allele found in contemporary populations belonging to races Amarillo Chico, Amarillo Grande, Blanco and Altiplano. Affiliation between ancient specimens and a set of races from the Andean complex was further supported by assignment tests. The striking genetic uniformity displayed by the ancient specimens and their close relationship with the Andean complex suggest that the latter gene pool has predominated in the western regions of southern South America for at least the past 1400 years. The results support hypotheses suggesting that maize cultivation initially spread into South America via a highland route, rather than through the lowlands. PMID:17476775

  9. Micronucleus test in fishes as indicators of environmental quality in subestuaries of the Río de la Plata (Uruguay).

    PubMed

    Gutiérrez, Juan Manuel; Villar, Silvia; Acuña Plavan, Alicia

    2015-02-28

    Genotoxic agents may exert damage that may be active through following generations. Micronuclei are cytoplasmic chromatin masses outside the main cell nucleus, indicators of chromosomal damage. This study applied micronuclei test to evaluate genetic damage of fish in three breeding and nursery areas of commercially important fishes exposed to differing degrees of anthropogenic impact: Pando, Solís Chico and Solís Grande sub-estuaries. The micronuclei test revealed differences in the presence and concentrations of genotoxic components in these sub-estuaries. Fish in the urban and industrialized Pando sub-estuary presented the highest percentages of micronuclei. The absence of seasonal changes in micronuclei in Pando fish could be explained by physical characteristics of the sub-estuary and by regional weather conditions. Odontesthes argentinensis (Valenciennes, 1835) was the species most susceptible to genotoxic components. It is recommended the use of a battery of biomarkers to better explain the health of organisms in that important nursery area. PMID:25455785

  10. Airborne gamma-ray spectrometer and magnetometer survey: Ukiah quadrangle, California. Final report

    SciTech Connect

    Not Available

    1981-05-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Ukiah, California, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1517 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  11. A reappraisal of the stratigraphy and chronology of Early Pliocene palaeontological sites from Lanzarote Island containing fossil terrestrial animals

    NASA Astrophysics Data System (ADS)

    Lomoschitz, Alejandro; Sánchez Marco, Antonio; Huertas, María José; Betancort, Juan F.; Isern, Arnau; Sanz, Elena; Meco, Joaquín

    2016-11-01

    The Famara massif, in the north of Lanzarote Island, constitutes the remains of a former island inhabited by the oldest known vertebrate fauna of the Canary archipelago off the coast of Africa. In this study, new ages are offered for the underlying and overlying basaltic lava flows of two paleontological sites. The island's three major palaeontological sites, which contain remains of this ancient fauna (Valle Grande, Valle Chico and Fuente de Gusa), are intercorrelated according to their lithologies, sedimentology, palaeontological content and geochronology. The new K/Ar age interval for the fossiliferous sedimentary deposits ranges between 4.3 ± 0.7 and 3.78 ± 0.71 Ma, within the Early Pliocene, and shows that the first known terrestrial animals in Lanzarote were present on the island for about 500 ka. The principal component of the deposits is a bioclastic calcarenite of aeolian origin (sand sheet deposits), which is present in all three sites and constitutes 65% of the beds. The remaining 35% is of fluvial-aeolian origin (mainly stream deposits). All the beds contain the same fossils (insect egg pods, land snails, avian eggshells and tortoise eggshells). The local palaeogeography and the formation of the deposits were conditioned by a flat plain, larger than 16 km2, over which aeolian sands moved freely with a prevailing NNE-WSW wind direction. In agreement with previous investigations, the palaeoclimate in this interval (ca. 4.3 to 3.8 Ma) must have been mainly dry with some rainy episodes.

  12. Laboratory and field evaluation of a biological monitoring system using Corbicula fluminea and Mulinia lateralis

    SciTech Connect

    Waller, W.T.; Allen, H.J.; Schwalm, F.U.; Acevedo, M.F.; Ammann, L.P.; Dickson, K.L.; Kennedy, J.H.; Morgan, E.L.

    1995-12-31

    Laboratory and field experiments have been performed to evaluate a non-invasive biomonitoring system using the Asiatic clam Corbicula fluminea and Mulinia lateralis. C. fluminea was exposed to simulated episodic toxicity events in the laboratory using copper, diazinon, and regulated flow rates. Group behavior during these simulated events was compared to behavior during unstressed periods to develop a statistical model and an alarm criteria. Bayou Chico, Pensacola Bay, FL, was the site for field experiments in which M. lateralis was placed in situ to evaluate the performance of the biomonitoring system. The biomonitoring system consists of proximity sensors which detect an aluminum foil target attached to the valve of an organism. Valve movements of the clams are then digitally recorded using a personal computer. Data collected from remote sites are telemetered to the lab using short wave radio. In its final form, the authors envision an in situ biological monitoring system using bivalves deployed in aquatic systems in conjunction with automated monitoring systems like those found at USGS gauging stations. A tool such as this could be used as a warning system to increase the probability of detecting toxic events as they occur.

  13. High-spin structure of 134Xe

    NASA Astrophysics Data System (ADS)

    Vogt, A.; Birkenbach, B.; Reiter, P.; Blazhev, A.; Siciliano, M.; Valiente-Dobón, J. J.; Wheldon, C.; Bazzacco, D.; Bowry, M.; Bracco, A.; Bruyneel, B.; Chakrawarthy, R. S.; Chapman, R.; Cline, D.; Corradi, L.; Crespi, F. C. L.; Cromaz, M.; de Angelis, G.; Eberth, J.; Fallon, P.; Farnea, E.; Fioretto, E.; Freeman, S. J.; Gadea, A.; Geibel, K.; Gelletly, W.; Gengelbach, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hayes, A. B.; Hess, H.; Hua, H.; John, P. R.; Jolie, J.; Jungclaus, A.; Korten, W.; Lee, I. Y.; Leoni, S.; Liang, X.; Lunardi, S.; Macchiavelli, A. O.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Napoli, D.; Pearson, C. J.; Pellegri, L.; Podolyák, Zs.; Pollarolo, G.; Pullia, A.; Radeck, F.; Recchia, F.; Regan, P. H.; Şahin, E.; Scarlassara, F.; Sletten, G.; Smith, J. F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szilner, S.; Szpak, B.; Teng, R.; Ur, C.; Vandone, V.; Ward, D.; Warner, D. D.; Wiens, A.; Wu, C. Y.

    2016-05-01

    Detailed spectroscopic information on the N ˜82 nuclei is necessary to benchmark shell-model calculations in the region. The nuclear structure above long-lived isomers in 134Xe is investigated after multinucleon transfer (MNT) and actinide fission. Xenon-134 was populated as (i) a transfer product in 238U+ 136Xe and 208Pb+ 136Xe MNT reactions and (ii) as a fission product in the 238U+ 136Xe reaction employing the high-resolution Advanced Gamma Tracking Array (AGATA). Trajectory reconstruction has been applied for the complete identification of beamlike transfer products with the magnetic spectrometer PRISMA. The 198Pt 136Xe MNT reaction was studied with the γ -ray spectrometer GAMMASPHERE in combination with the gas detector array Compact Heavy Ion Counter (CHICO). Several high-spin states in 134Xe on top of the two long-lived isomers are discovered based on γ γ -coincidence relationships and information on the γ -ray angular distributions as well as excitation energies from the total kinetic energy loss and fission fragments. The revised level scheme of 134Xe is extended up to an excitation energy of 5.832 MeV with tentative spin-parity assignments up to 16+. Previous assignments of states above the 7- isomer are revised. Latest shell-model calculations employing two different effective interactions reproduce the experimental findings and support the new spin and parity assignments.

  14. Preliminary hydrologic budget of the sand-and-gravel aquifer under unstressed conditions : with a section on water-quality monitoring, Pensacola, Florida

    USGS Publications Warehouse

    Trapp, Henry

    1978-01-01

    The sand-and-gravel aquifer is the only freshwater aquifer in southern Escambia County, Fla. Problems related to the development of the aquifer include sustained yield, contamination, and saltwater intrusion. A digital model was applied to the sand-and-gravel aquifer in central and southern Escambia County treating the aquifer 's 'main producing zone ' as a discrete, leaky, confined aquifer. Under conditions of no pumping, most values for the final-head matrix agreed with assumed values within 4 feet in the area of principal interest. Discharge per unit land area was 1.04 cubic feet per second per square mile, in close agreement with the base runoff streams maintained by the aquifer. Total natural aquifer discharge within the area of principal interest determined by the model was 159 million gallons per day. The applicability of the present non-unique calibration for predicting the effects of pumping is questionable; a multilayered model may be required. Effluent infiltrating from holding lagoons for spray irrigation at the Scenic Hills Sewage Plant may have affected the quality of local perched ground water in the sand-and-gravel aquifer. Observation wells drilled near areas of heavy pumping around Bayou Chico indicated no saltwater intrusion. (Woodard-USGS)

  15. Endovascular Repair of an Actively Hemorrhaging Stab Wound Injury to the Abdominal Aorta

    SciTech Connect

    Hussain, Qasim; Maleux, Geert Heye, Sam; Fourneau, Inge

    2008-09-15

    Traumatic injury of the abdominal aorta is rare and potentially lethal (Yeh et al., J Vasc Surg 42(5):1007-1009, 2005; Chicos et al., Chirurgia (Bucur) 102(2):237-240, 2007) as it can result in major retroperitoneal hemorrhage, requiring an urgent open surgery. In case of concomitant bowel injury or other conditions of hostile abdomen, endovascular repair can be an alternative treatment. This case report deals with a 50-year-old man presenting at the emergency ward with three stab wounds: two in the abdomen and one in the chest. During explorative laparotomy, liver laceration and bowel perforation were repaired. One day later, abdominal CT-scan revealed an additional retroperitoneal hematoma associated with an aortic pseudoaneurysm, located anteriorly 3 cm above the aortic bifurcation. Because of the risk of graft infection, an endovascular repair of the aortic injury using a Gore excluder stent-graft was performed. Radiological and clinical follow-up revealed a gradual shrinkage of the pseudo-aneurysm and no sign of graft infection at two years' follow-up.

  16. Spatio-temporal variability of the snow cover in different Mediterranean mountain regions from in situ and remote sensing data

    NASA Astrophysics Data System (ADS)

    Gascoin, Simon; López-Moreno, Juan Ignacio; Herrero, Javier; Sproles, Eric; Hanich, Lahoucine; Boudhar, Abdelghani; Pons, Marc; Alonso-González, Esteban; Musselman, Keith

    2016-04-01

    The snow cover is an essential water resource in many regions with a Mediterranean climate. In the mountainous areas of these regions, in situ snow measurements are often too sparse to cover the range of spatial variability due to the topography. In contrast, satellite snow products are not sufficient to understand the processes governing the snowpack evolution. The combination of both data sources is useful to understand the effects of climate variability on the snow cover. Here we gathered the data of several high-elevation, snow-observing stations in the Pyrenees (Spain, Andorra), High-Atlas (Morocco), Sierra Nevada (Spain), Sierra Nevada (USA) and the Andes of Norte Chico (Chile) to run a point-scale snowpack energy-balance model. We extracted and gapfilled the MODIS snow product over 2000-2015 around each station to determine the mean snow cover duration as a function of elevation. The results of the energy-balance model highlight the importance of the snow sublimation, which amounts from 10% to 30% of the mean annual solid precipitation in these sites. The MODIS data indicate that the relationship between the snow cover duration and the elevation is almost entirely explained by the distance from of each site to the equator, which further indicates that radiation and humidity are important drivers of the snowpack dynamics. These factors should not be overlooked in the projections of the melt water contribution to runoff under future climate conditions.

  17. Phenolic contamination in the sand-and-gravel aquifer from a surface impoundment of wood treatment wastes, Pensacola, Florida

    USGS Publications Warehouse

    Troutman, D.E.; Godsy, E.M.; Goerlitz, D.F.; Ehrlich, G.G.

    1984-01-01

    Creosote and pentachlorophenol wastewaters discharged to unlined surface impoundments have resulted in groundwater contamination in the vicinity of an industrial site near Pensacola, Florida. Total phenol concentrations of 36,000 microgm/liter have been detected 40 ft below land surface in a test hole 100 ft south of an overflow impoundment but less than 10 microgm/liter 90 ft below land surface. Samples collected in test holes 1,350 ft downgradient from the surface impoundments and 100 ft north of Pensacola Bay, above and immediately below a clay lens, indicate that phenol contaminated groundwater may not be discharging directly into Pensacola Bay. Phenol concentrations exceeding 20 microgm/liter were detected in samples from a drainage ditch discharging directly into Bayou Chico. Microbiological data collected near the test site suggest that an anaerobic methanogenic ecosystem contributes to a reduction in phenol concentrations in groundwater. A laboratory study using bacteria isolated from the study site indicates that phenol, 2-methylphenol, and 3-methylphenol are significantly degraded and that methanogenesis reduces total phenol concentrations in laboratory digestors by 45%. Pentachlorophenol may inhibit methanogenesis at concentrations exceeding 0.45 milligm/liter. (USGS)

  18. Radon exposure in uranium mining industry vs. exposure in tourist caves.

    PubMed

    Quindós Poncela, L; Fernández Navarro, P; Sainz Fernández, C; Gómez Arozamena, J; Bordonoba Perez, M

    2004-01-01

    There is a fairly general consensus among health physicists and radiation professionals that exposure to radon progeny is the largest and most variable contribution to the population's exposure to natural sources of radiation. However, this exposure is the subject of continuing debate concerning the validity of risk assessment and recommendations on how to act in radon-prone areas. The purpose of this contribution is to situate the radon issue in Spain in two very different settings. The first is a uranium mining industry located in Saelices el Chico (Salamanca), which is under strict control of the Spanish Nuclear Safety Council (CSN). We have measured radon concentrations in different workplaces in this mine over a five-year period. The second setting comprises four tourist caves, three of which are located in the province of Cantabria and the fourth on the Canary Island of Lanzarote. These caves are not subject to any administrative control of radiation exposure. Measured air 222Rn concentrations were used to estimate annual effective doses due to radon inhalation in the two settings, and dose values were found to be from 2 to 10 times lower in the uranium mine than in the tourist caves. These results were analysed in the context of the new European Basic Safety Standards Directive (EU-BSS, 1996).

  19. Recognition on space photographs of structural elements of Baja California

    NASA Technical Reports Server (NTRS)

    Hamilton, W.

    1971-01-01

    Gemini and Apollo photographs provide illustrations of known structural features of the peninsula and some structures not recognized previously. An apparent transform relationship between strike-slip and normal faulting is illustrated by the overlapping vertical photographs of northern Baja California. The active Agua Blanca right-lateral strike-slip fault trends east-southeastward to end at the north end of the Valle San Felipe and Valle Chico. The uplands of the high Sierra San Pedro Martir are a low-relief surface deformed by young faults, monoclines, and warps, which mostly produce west-facing steps and slopes; the topography is basically structural. The Sierra Cucapas of northeasternmost Baja California and the Colorado River delta of northwesternmost Sonora are broken by northwest-trending strike-slip faults. A strike-slip fault is inferred to trend northward obliquely from near Cabo San Lucas to La Paz, thence offshore until it comes ashore again as the Bahia Concepcion strike-slip fault.

  20. Wildfires in bamboo-dominated Amazonian forest: impacts on above-ground biomass and biodiversity.

    PubMed

    Barlow, Jos; Silveira, Juliana M; Mestre, Luiz A M; Andrade, Rafael B; Camacho D'Andrea, Gabriela; Louzada, Julio; Vaz-de-Mello, Fernando Z; Numata, Izaya; Lacau, Sébastien; Cochrane, Mark A

    2012-01-01

    Fire has become an increasingly important disturbance event in south-western Amazonia. We conducted the first assessment of the ecological impacts of these wildfires in 2008, sampling forest structure and biodiversity along twelve 500 m transects in the Chico Mendes Extractive Reserve, Acre, Brazil. Six transects were placed in unburned forests and six were in forests that burned during a series of forest fires that occurred from August to October 2005. Normalized Burn Ratio (NBR) calculations, based on Landsat reflectance data, indicate that all transects were similar prior to the fires. We sampled understorey and canopy vegetation, birds using both mist nets and point counts, coprophagous dung beetles and the leaf-litter ant fauna. Fire had limited influence upon either faunal or floral species richness or community structure responses, and stems <10 cm DBH were the only group to show highly significant (p = 0.001) community turnover in burned forests. Mean aboveground live biomass was statistically indistinguishable in the unburned and burned plots, although there was a significant increase in the total abundance of dead stems in burned plots. Comparisons with previous studies suggest that wildfires had much less effect upon forest structure and biodiversity in these south-western Amazonian forests than in central and eastern Amazonia, where most fire research has been undertaken to date. We discuss potential reasons for the apparent greater resilience of our study plots to wildfire, examining the role of fire intensity, bamboo dominance, background rates of disturbance, landscape and soil conditions.

  1. Octupole deformation in 144,146Ba measured by Coulomb excitation of radioactive beams

    NASA Astrophysics Data System (ADS)

    Bucher, Brian; Zhu, Shaofei; ANL, LBNL, LLNL, Rochester, Florida State, Liverpool, Maryland, Notre Dame, Ohio, W. Scotland Collaboration

    2015-10-01

    The exotic, neutron-rich 144Ba (t1 / 2 = 11.5 s) and 146Ba (t1 / 2 = 2.2 s) nuclei are expected to exhibit some of the strongest octupole correlations in A < 200 systems. Up to now, evidence for such strong octupole correlations has been inferred from observations of low-lying negative-parity states and from the interleaving of positive- and negative-parity levels in the ground-state band. However, the E1 transition strengths are very different in these two nuclei, with two orders of magnitude reduction in 146Ba. In this experiment, we measure the octupole strength directly by Coulomb excitation of post-accelerated 144,146Ba beams produced at CARIBU using CHICO2 and GRETINA. In 144Ba, we found B(E3;3 -->0) = 48(-34+ 25) W.u., a value considerably larger than theoretical predictions, while preliminary results for 146Ba are also indicative of strong octupole collectivity. The experimental conditions, the analysis, and the results from these challenging new measurements will be presented. This work is supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357 (ANL), DE-AC02-05CH11231 (LBNL, GRETINA), DOE DE-AC52-07NA27344 (LLNL), and NSF.

  2. Wildfires in bamboo-dominated Amazonian forest: impacts on above-ground biomass and biodiversity.

    PubMed

    Barlow, Jos; Silveira, Juliana M; Mestre, Luiz A M; Andrade, Rafael B; Camacho D'Andrea, Gabriela; Louzada, Julio; Vaz-de-Mello, Fernando Z; Numata, Izaya; Lacau, Sébastien; Cochrane, Mark A

    2012-01-01

    Fire has become an increasingly important disturbance event in south-western Amazonia. We conducted the first assessment of the ecological impacts of these wildfires in 2008, sampling forest structure and biodiversity along twelve 500 m transects in the Chico Mendes Extractive Reserve, Acre, Brazil. Six transects were placed in unburned forests and six were in forests that burned during a series of forest fires that occurred from August to October 2005. Normalized Burn Ratio (NBR) calculations, based on Landsat reflectance data, indicate that all transects were similar prior to the fires. We sampled understorey and canopy vegetation, birds using both mist nets and point counts, coprophagous dung beetles and the leaf-litter ant fauna. Fire had limited influence upon either faunal or floral species richness or community structure responses, and stems <10 cm DBH were the only group to show highly significant (p = 0.001) community turnover in burned forests. Mean aboveground live biomass was statistically indistinguishable in the unburned and burned plots, although there was a significant increase in the total abundance of dead stems in burned plots. Comparisons with previous studies suggest that wildfires had much less effect upon forest structure and biodiversity in these south-western Amazonian forests than in central and eastern Amazonia, where most fire research has been undertaken to date. We discuss potential reasons for the apparent greater resilience of our study plots to wildfire, examining the role of fire intensity, bamboo dominance, background rates of disturbance, landscape and soil conditions. PMID:22428035

  3. Revised timing of the South American early Paleogene land mammal ages

    NASA Astrophysics Data System (ADS)

    Woodburne, Michael O.; Goin, Francisco J.; Raigemborn, Maria Sol; Heizler, Matt; Gelfo, Javier N.; Oliveira, Edison V.

    2014-10-01

    A new Ar/Ar date on the Las Flores Tuff (Río Chico Group, Las Flores Fm., central Patagonia, Argentina) yielded an age of 49.512 ± 0.019 Ma. This tuff, which stratigraphically overlies the mammal-bearing deposits that produced the Las Flores fauna, helps constrain the age of the Itaboraian SALMA [South American Land Mammal Age] to which that fauna is referred. The new data also have implications for the age of succeeding mammal biochrons, such as the Riochican and “Sapoan” which are revised to being somewhat younger than previously interpreted. Although closer in age than formerly interpreted, they still are biotically distinct. Concomitant evaluations suggest that the Itaboraian SALMA is perhaps more contemporary with the EECO (Early Eocene Climatic Optimum) than previously considered. The Riochican may be interpreted as post-EECO, with its cooler climate consistent in that regard. A recent reconsideration of the chronology of elements of the Salamanca Formation resulted in the downward revision of the ages of the Peligran SALMA and the Carodnia Zone biochrons. These operations, together with our results, reflect a 9 m.y. gap in the late Paleocene and early Eocene land mammal record in South America.

  4. Lateral migration of the Middle Sacramento River, California

    USGS Publications Warehouse

    Brice, James Coble

    1977-01-01

    Rates and processes of lateral erosion were studied for the middle Sacramento River between Chico Landing and Colusa, Calif. , a river distance of about 50 miles which is bordered by valuable agricultural land. The study is based on comparison of maps made during 1867-1949 and on aerial photographs made during 1924-74. Meander loops migrate by downstream translation in a direction nearly perpendicular to the loop axis. Loops are cut off by straight or diagonal chutes across the meander neck. The sinuosity of the river has gradually decreased from a value of 1.56 in 1896 to 1.35 in 1974. The morphology and curvature of meander loops cut off before white settlers came to the area indicate that the river was more stable, as well as more sinuous , then than now; subsequent morphologic changes are attributed mainly to the clearing of riparian vegetation and the effects of levees in reducing the area of overflow. The bank-erosion is 1.82 acres per year per stream mile or about 15 feet per year per stream foot for the period 1896-1974. (Woodard-USGS)

  5. [The P300 component as a neurophysiological correlate of behavioural working memory in adolescents with attention deficit hyperactivity disorder].

    PubMed

    Roca, Patricia; Presentación-Herrero, M Jesús; Miranda-Casas, Ana; Mulas, Fernando; Ortiz-Sánchez, Pedro

    2014-02-24

    Introduccion. El deficit en funciones ejecutivas ha sido ampliamente estudiado en el trastorno por deficit de atencion/hiperactividad (TDAH). El interes por sus correlatos neurofisiologicos apunta a una mejora en la identificacion de los sintomas, las caracteristicas y los tratamientos para el trastorno. Objetivo. Analizar, en una muestra de adolescentes con TDAH, la correlacion entre la latencia y amplitud del componente P300 y una medida ecologica de memoria de trabajo. Pacientes y metodos. La muestra estuvo compuesta por 24 chicos y 7 chicas de 12 a 18 anos. Se realizo un registro y analisis de potenciales evocados cognitivos P300 en modalidad auditiva en Cz. Ademas, los padres cumplimentaron una escala de comportamiento ejecutivo en el hogar (BRIEF), de la que se extrajo el indice de memoria de trabajo. Resultados. Se hallaron correlaciones significativas entre la amplitud del P300 y el indice de memoria de trabajo del BRIEF-P. Conclusion. Los resultados enfatizan la utilidad del componente P300 para el estudio de sus correlatos ejecutivos, y la necesidad de ampliar con estudios que aporten mayores muestras y mayor complejidad.

  6. Airborne gamma-ray spectrometer and magnetometer survey: Alturas quadrangle, California. Final report

    SciTech Connect

    Not Available

    1981-05-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Alturas, California, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1631.6 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  7. Flood data for the Sacramento River and Butte Basin, Sacramento Valley, California, 1980-90

    USGS Publications Warehouse

    Harmon, Jerry G.

    1994-01-01

    Floodflows and peak states of floods were measured and channel cross sections were surveyed at sites along the Sacramento River and in Butte Basin, Sacramento Valley, California, during 1980-90 to document magnitudes of flooding and channel changes. The study reach extends from rivermile 200 near Hamilton City to rivermile 134 near Meridian. Data were collected for each flood at about 70 sites that include streamf-flow gages, crest-stage gages, bridges and road overflows on State Highway 162 east of Butte City, and locations of historical high- water marks. Six cross sections of the river between rivermiles 193.7 near Big Chico Creek and 183.3 near Ordbend were surveyed annually during calendar years 1981-84, and 1986-90. Floodflows (peak flow 157,000 cubic feet per second) almost equaled the design flow capacity of the river at Butte City on March 2, 1983, when the peak stage of 93.0 feet was 5 feet below the top of the levee. This was the largest flood recorded at Butte City during 1980- 90. The most recent flood occurred February 18-19, 1986, when the peak stage in the river at Butte City was 92.0 feet and the peak flow was 145,000 cubic feet per second.

  8. Airborne gamma-ray spectrometer and magnetometer survey, Medford Quadrangle Oregon. Final report

    SciTech Connect

    Not Available

    1981-04-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Medford, Oregon, map area. Traverse lines were flown in an east-west direction at a line spacing of three miles. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 2925 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  9. Airborne gamma-ray spectrometer and magnetometer survey Coos Bay, Oregon. Final report

    SciTech Connect

    Not Available

    1981-05-01

    During the months of August, September, and October of 1980, Aero Service Division Western Geophysical Company of America conducted an airborne high sensitivity gamma-ray spectrometer and magnetometer survey over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Coos Bay, Oregon, map area. Line spacing was generally six miles for east/west traverses and eighteen miles for north/south tie lines over the northern one-half of the area. Traverses and tie lines were flown at three miles and twelve miles respectively over the southern one-half of the area. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 863.8 line miles are in this quadrangle.

  10. Airborne gamma-ray spectrometer and magnetometer survey, Roseburg Quadrangle, Oregon. Final report

    SciTech Connect

    Not Available

    1981-03-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Roseburg, Oregon, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1596 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  11. Airborne gamma-ray spectrometer and magnetometer survey: Eureka quadrangle, California. Final report

    SciTech Connect

    Not Available

    1981-05-01

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Eureka/Crescent City, California, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were aquired, compiled, and interpreted during the survey, of which 349.5 line miles are in this area. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  12. [Descriptive statistical analysis of the treatment of status epilepticus in a referral hospital].

    PubMed

    Hortigüela-Saeta, M Montesclaros; Conejo-Moreno, David; Gutiérrez-Moreno, Miriam; Gómez-Saiz, Luna

    2015-05-16

    Introduccion. Los estados epilepticos se definen como crisis recurrentes sin recuperacion de la conciencia entre ellas o una sola crisis de mas de 30 minutos. Objetivos. Realizar un analisis descriptivo de los datos mas relevantes de pacientes con estados epilepticos ingresados en la unidad de cuidados intensivos pediatricos (UCIP) y revisar los factores de riesgo asociados a estado epileptico de mal pronostico. Pacientes y metodos. Se estudiaron las variables principales de los pacientes ingresados en la UCIP con estado epileptico de un hospital terciario en un periodo de seis años. Resultados. Se recogieron 68 pacientes (el 55,9%, varones) con una edad media de 3,7 años. La semiologia mas frecuente fue en forma de crisis tonicoclonicas generalizadas (50%). La duracion media de los estados epilepticos fue de 51,44 minutos. Se utilizaron 3,21 farmacos antiepilepticos de media para yugular las crisis, y la media de farmacos utilizados previamente al ingreso en la UCIP fue de 2,37. El farmaco de primera linea mas utilizado fue el diacepam (83,8%) rectal (75%), seguido del diacepam (52,9%) por via intravenosa en segundo lugar, y la fenitoina fue el farmaco mas utilizado como tercera linea. La causa mas frecuente de estado epileptico fue padecer epilepsia previa (33,9%), y el sindrome de Dravet fue la etiologia epileptica mas frecuente. Conclusiones. El tratamiento de los estados epilepticos es complejo y exige un manejo multidisciplinar e individualizado. Es necesaria la elaboracion y revision de protocolos y guias clinicas para un adecuado manejo de estos pacientes.

  13. Oral nutritional supplements intake and nutritional status among inpatients admitted in a tertiary hospital.

    PubMed

    Lammel Ricardi, Juliana; Marcadenti, Aline; Perocchin de Souza, Simone; Siviero Ribeiro, Anelise

    2013-01-01

    Introducción: La malnutrición es muy frecuente en los hospitales y, en los pacientes ingresados con una prescripción de suplementación nutricional oral, hay una mejoría del estado nutricional. Objetivos: Detectar la tasa total de aceptación y la posible asociación entre la toma de suplementos de nutrición oral con el estado nutricional. Métodos: Se realizó un estudio transversal entre 398 pacientes ingresados. Se analizaron 15 tipos de suplementos y se detectó el estado nutricional mediante la escala Subjective Global Assessment (SGA). Se obtuvo el índice reposo-ingesta (IR) y se empleó la regresión modificada de Poisson para detectar las asociaciones entre el estado nutricional y la toma de suplementos nutritivos. Resultados: La prevalencia de malnutrición fue del 43, 7% y la aceptación global de los suplementos fue de alrededor del 75%. Los suplementos de origen industrial tienen una mejor aceptación entre los pacientes bien nutridos y los pacientes que ingieren menos del 80% del suplemento ofrecido (ya sea industrial o casero) presentan un mayor riesgo de malnutrición (48%). Conclusión: Hubo una asociación entre la ingesta de suplementos nutricionales orales y el estado nutricional, a pesar de una buena tasa de aceptación.

  14. [Prevalence of malnutrition in Spanish institutionalized older people: a multicentric nationwide analysis].

    PubMed

    Vaca Bermejo, Raúl; Ancizu García, Iciar; Moya Galera, David; de las Heras Rodríguez, Mónica; Pascual Torramadé, Josep

    2014-10-06

    Introducción: Un estado nutricional deficitario tiene importantes consecuencias en la salud de los colectivos en situación de especial vulnerabilidad, como las personas con enfermedades crónicas o personas mayores en situación de dependencia. Objetivo: Conocer el estado nutricional al ingreso de usuarios en centros SARquavitae. Material y Método: Se estudió el estado de salud, cognitivo y funcional de las personas que ingresaron durante el año 2012 en algún centro de la compañía. El estado nutricional fue evaluado mediante la versión corta del Mini Nutritional Assessment. Asimismo, se realizó un análisis para conocer las variables con mayor influencia en el estado nutricional de la muestra objeto de estudio. Resultados: Se analizaron las historias clínicas de 4.297 ingresos. La edad media fue de 82,08 años. Un 66,1% eran mujeres con una alta pluripatología. Al ingreso, un 30,4% de la muestra se encuentra en situación de desnutrición y un 49,4% en riesgo de desnutrición. Se observa una mayor prevalencia de desnutrición en mujeres, en aquellas personas que son derivadas por un hospital de agudos o por sus consultas externas, con peor estado funcional y cognitivo y en aquellas con procesos patológicos como demencia, enfermedades cerebrovasculares o disfagia. Conclusiones: Los resultados de este estudio ponen de manifiesto la alta complejidad clínica de las personas que ingresan en los centros residenciales estudiados, evidenciando la necesidad de realizar valoraciones integrales que permitan establecer planes de cuidados específicos para los perfiles atendidos.

  15. [Pilot study about the effectivity of an intervention based on games in nutritional status and muscle strength on children].

    PubMed

    Soto-Sánchez, Johana Patricia; Pavez Saldiviar, Nicolás Fernando; Bravo-Gatica, Javier Ignacio; White Ortiz, Alan Rigoberto; Jaque Fernández, Francisco Ignacio; Vargas-Gyllen, Cristian Ignacio; Arriagada Cárdenas, Sandra; Carrasco Naranjo, Fernando; Cano-Cappellacci, Marcelo Antonio

    2014-07-01

    INTRODUCCIÓN: La malnutrición por exceso es una constante en países en vías de desarrollo, Chile no es una excepción ya que existe una marcada tendencia hacia el sobrepeso y obesidad en la población escolar. La fuerza muscular ha sido asociada con un adecuado estado de salud cardiovascular y metabólica en la población escolar. Se necesitan intervenciones efectivas, que utilicen herramientas lúdicas y que permitan mejorar el estado nutricional y la capacidad física de los escolares.

  16. Dynamics of the Gong windstorm (Jan 2013) in the context of a 20-year high-resolution simulation of Iberian climate

    NASA Astrophysics Data System (ADS)

    Miranda, Pedro M. A.; João Chinita, Maria; Cardoso, Rita; Soares, Pedro; Viterbo, Pedro; Pinto, Paulo; Mendes, Manuel

    2014-05-01

    state. The Oeste storm is also poorly simulated in both simulations. Xinthia and Klaus, on the other hand, are both well represented in the continuous RCM simulation. The Oeste storm was earlier diagnosed as a sting-jet storm, using Doppler radar techniques, corresponding to the conceptual model of Browning (2004). The present case study simulation shows that the same applies to the Gong storm, although the latter has a somewhat larger horizontal scale. An increased relevance of this extreme storm dynamics in recent and future European storms is an intriguing possibility. The sensitivity of these storms to details in the synoptic environment is a very relevant issue in the analysis of storm trends in future climate scenarios. Acknowledgements. Study supported by FCT through Grants PTDC/CTE-ATM/119922/2010 and PEST/OE/CTE/LA0019-2013-2014. References Browning, K.A., 2004: The sting at the end of the tail: Damaging winds associated with extratropical cyclones. Q. J. R. Meteorol. Soc., 130, 375-399 Cardoso RM, Soares PMM, Miranda PMA, Belo-Pereira M (2013) WRF high resolution simulation of Iberian mean and extreme precipitation climate, International Journal of Climatology, 33, 2591-2608, DOI: 10.1002/joc.3616 Soares PMM, Cardoso RM, Miranda PMA, Viterbo P, Belo-Pereira M, Viterbo P (2012) Assessment of the ENSEMBLES regional climate models in the representation of precipitation variability and extremes over Portugal. J Geophys Res (Atmospheres), 117, D07114, doi:10.1029/2011JD016768

  17. Monitoring the soil degradation by Metastatistical Analysis

    NASA Astrophysics Data System (ADS)

    Oleschko, K.; Gaona, C.; Tarquis, A.

    2009-04-01

    /statistical toolbox Metastatistical Analysis and recommend it to the projects directed to soil degradation monitoring. References: 1. Oleschko, K., B.S. Figueroa, M.E. Miranda, M.A. Vuelvas and E.R. Solleiro, Soil & Till. Res. 55, 43 (2000). 2. Oleschko, K., Korvin, G., Figueroa S. B., Vuelvas, M.A., Balankin, A., Flores L., Carreño, D. Fractal radar scattering from soil. Physical Review E.67, 041403, 2003. 3. Zamora-Castro S., Oleschko, K. Flores, L., Ventura, E. Jr., Parrot, J.-F., 2008. Fractal mapping of pore and solids attributes. Vadose Zone Journal, v. 7, Issue2: 473-492. 4. Oleschko, K., Korvin, G., Muñoz, A., Velásquez, J., Miranda, M.E., Carreon, D., Flores, L., Martínez, M., Velásquez-Valle, M., Brambilla, F., Parrot, J.-F. Ronquillo, G., 2008. Fractal mapping of soil moisture content from remote sensed multi-scale data. Nonlinear Proceses in Geophysics Journal, 15: 711-725. 5. Atmanspacher, H., Räth, Ch., Wiedenmann, G., 1997. Statistics and meta-statistics in the concept of complexity. Physica A, 234: 819-829.

  18. A lagrangian-eulerian description of debris transport by a tsunami in the Lisbon waterfront

    NASA Astrophysics Data System (ADS)

    Conde, Daniel; Canelas, Ricardo; Baptista, Maria Ana; João Telhado, Maria; Ferreira, Rui M. L.

    2013-04-01

    Several major tsunamis are known to have struck the Portuguese coast over the past millennia (Baptista and Miranda, 2009). The Tagus estuary has great exposure to tsunami occurrences and, being bordered by the largest metropolitan area in the country, is a particularly worrisome location in what concerns safety of populations and economic losses due to disruption of built infrastructures. The last major earthquake and tsunami combination known to have critically affected the Tagus estuary dates back to November 1st 1755. This catastrophe critically damaged Lisbon's infrastructures, led to numerous casualties and priceless heritage losses. The urban tissue of the present city still bears visible the effects of the catastrophe and of the ensuing protection measures. The objective of this work is to simulate the propagation of debris carried by a 1755-like tsunami along the present-day bathimetric and altimetric conditions of Lisbon waterfront. Particular emphasis was directed to the modeling of vehicles since the tsunami is likely to affect areas that are major traffic nodes such as Alcântara, with more than 1500 vehicles in road network of about 3 km. The simulation tool employed is based on a 2DH spatial (eulerian) shallow-flow approach suited to complex and dynamic bottom boundaries. The discretization technique relies on a finite-volume scheme, based on a flux-splitting technique incorporating a reviewed version of the Roe Riemann solver (Canelas et al. 2013). Two formulations were employed to model the advection of debris: a fully coupled continuum approach, where solid bodies are described by the concentration only and an uncoupled material (lagrangian) formulation where solid bodies are tracked between two time-steps once the flow field is determined by the eulerian solver. In the latter case, concentrations are updated after tracking the solid bodies thus correcting the mass and momentum balance to be used for the next time-step. The urban tissue was

  19. OncomiRdbB: a comprehensive database of microRNAs and their targets in breast cancer

    PubMed Central

    2014-01-01

    Background Given the estimate that 30% of our genes are controlled by microRNAs, it is essential that we understand the precise relationship between microRNAs and their targets. OncomiRs are microRNAs (miRNAs) that have been frequently shown to be deregulated in cancer. However, although several oncomiRs have been identified and characterized, there is as yet no comprehensive compilation of this data which has rendered it underutilized by cancer biologists. There is therefore an unmet need in generating bioinformatic platforms to speed the identification of novel therapeutic targets. Description We describe here OncomiRdbB, a comprehensive database of oncomiRs mined from different existing databases for mouse and humans along with novel oncomiRs that we have validated in human breast cancer samples. The database also lists their respective predicted targets, identified using miRanda, along with their IDs, sequences, chromosome location and detailed description. This database facilitates querying by search strings including microRNA name, sequence, accession number, target genes and organisms. The microRNA networks and their hubs with respective targets at 3'UTR, 5'UTR and exons of different pathway genes were also deciphered using the 'R' algorithm. Conclusion OncomiRdbB is a comprehensive and integrated database of oncomiRs and their targets in breast cancer with multiple query options which will help enhance both understanding of the biology of breast cancer and the development of new and innovative microRNA based diagnostic tools and targets of therapeutic significance. OncomiRdbB is freely available for download through the URL link http://tdb.ccmb.res.in/OncomiRdbB/index.htm. PMID:24428888

  20. Escherichia coli EDL933 requires gluconeogenic nutrients to successfully colonize the intestines of streptomycin-treated mice precolonized with E. coli Nissle 1917.

    PubMed

    Schinner, Silvia A C; Mokszycki, Matthew E; Adediran, Jimmy; Leatham-Jensen, Mary; Conway, Tyrrell; Cohen, Paul S

    2015-05-01

    Escherichia coli MG1655, a K-12 strain, uses glycolytic nutrients exclusively to colonize the intestines of streptomycin-treated mice when it is the only E. coli strain present or when it is confronted with E. coli EDL933, an O157:H7 strain. In contrast, E. coli EDL933 uses glycolytic nutrients exclusively when it is the only E. coli strain in the intestine but switches in part to gluconeogenic nutrients when it colonizes mice precolonized with E. coli MG1655 (R. L. Miranda et al., Infect Immun 72:1666-1676, 2004, http://dx.doi.org/10.1128/IAI.72.3.1666-1676.2004). Recently, J. W. Njoroge et al. (mBio 3:e00280-12, 2012, http://dx.doi.org/10.1128/mBio.00280-12) reported that E. coli 86-24, an O157:H7 strain, activates the expression of virulence genes under gluconeogenic conditions, suggesting that colonization of the intestine with a probiotic E. coli strain that outcompetes O157:H7 strains for gluconeogenic nutrients could render them nonpathogenic. Here we report that E. coli Nissle 1917, a probiotic strain, uses both glycolytic and gluconeogenic nutrients to colonize the mouse intestine between 1 and 5 days postfeeding, appears to stop using gluconeogenic nutrients thereafter in a large, long-term colonization niche, but continues to use them in a smaller niche to compete with invading E. coli EDL933. Evidence is also presented suggesting that invading E. coli EDL933 uses both glycolytic and gluconeogenic nutrients and needs the ability to perform gluconeogenesis in order to colonize mice precolonized with E. coli Nissle 1917. The data presented here therefore rule out the possibility that E. coli Nissle 1917 can starve the O157:H7 E. coli strain EDL933 of gluconeogenic nutrients, even though E. coli Nissle 1917 uses such nutrients to compete with E. coli EDL933 in the mouse intestine. PMID:25733524

  1. X chromosomes and autosomes evolve at similar rates in Drosophila: no evidence for faster-X protein evolution.

    PubMed

    Thornton, Kevin; Bachtrog, Doris; Andolfatto, Peter

    2006-04-01

    Recent data from Drosophila suggest that a substantial fraction of amino acid substitutions observed between species are beneficial. If these beneficial mutations are on average partially recessive, then the rate of protein evolution is predicted to be faster for X-linked genes compared to autosomal genes (the "faster-X" hypothesis). We test this prediction by comparing rates of protein substitutions between orthologous genes, taking advantage of variations in chromosome fusions within the genus Drosophila. In members of the Drosophila melanogaster species group, the chromosomal arm 3L segregates as an ordinary autosome (i.e., two homologous copies in both males and females). However, in the Drosophila pseudoobscura species group, this chromosomal arm has become fused to the ancestral X chromosome and is hemizygous in males. The faster-X hypothesis predicts that protein evolution should be faster for genes on this chromosomal arm in the D. pseudoobscura lineage, relative to the D. melanogaster lineage. Here we combine new sequence data for 202 gene fragments in Drosophila miranda (in the pseudoobscura species group) with the completed genomes of D. melanogaster, D. pseudoobscura, and Drosophila yakuba to show that there are no detectable differences in rates of amino acid evolution for orthologous X-linked and autosomal genes. Our results imply that the contribution of the faster-X (if any) to the large-X effect on reproductive isolation in Drosophila is not due to a generally faster rate of protein evolution. The lack of a detectable faster-X effect in these species suggests either that beneficial amino acids are not partially recessive on average, or that adaptive evolution does not often use newly arising amino acid mutations.

  2. [Screening of bone-related microRNAs in serum of patients with osteogenesis imperfect].

    PubMed

    Wang, Ziqiang; Lu, Yanqin; Ren, Xiuzhi; Wang, Yanzhou; Li, Zhiliang; Xu, Chao; Han, Jinxiang

    2012-10-01

    We screened differential expression bone-related microRNAs (miRNAs) in serum of patients with osteogenesis imperfect (OI). First, we selected the reference gene (s) fit for quantitative detection of serum miRNAs by using geNorm and several other programmes. Then real-time fluorescent quntitative PCR was used to detect the expression level of bone-related miRNAs gained by means of miRanda, Targetscan and Pictar softwares caculation and reading literature. Then, the results were analyzed with the matched t test. All 6 candidate reference genes had a stable expression level in serum of healthy controls and patients with different characters, and the optimal number of reference genes is 4 (miR-16, let-7a, snRNAU6, miR-92a) after Pairwise Variations analysis (V4/5 = 0.133 < 0.15). For validating the universality of expression stability, we detected the relative expression value of miR-16, let-7a, snRNAU6 and miR-92a in another 8 healthy controls and 16 patients with OI and the result revealed that the expression of 4 genes remained stable (M < 1.5). After measuring serum levels of more than 100 bone-related miRNAs in patients with real-time qPCR, 11 miRNAs showed differential expression, and bioinformatic analysis suggested these altered expressional mioRNAs had possibilities to participate in the process of OI. So the experiment indicated that there existed many differential expression bone-related miRNAs in serum of patients with OI, and these miRNAs had potentials to be promising biomarkers for serologic tests and diagnosis of OI. PMID:23311139

  3. Systematic enrichment analysis of microRNA expression profiling studies in endometriosis

    PubMed Central

    Wei, Shiyang; Xu, Hong; Kuang, Yan

    2015-01-01

    Objective(s): The purpose of this study was to conduct a meta-analysis on human microRNAs (miRNAs) expression data of endometriosis tissue profiles versus those of normal controls and to identify novel putative diagnostic markers. Materials and Methods: PubMed, Embase, Web of Science, Ovid Medline were used to search for endometriosis miRNA expression profiling studies of endometriosis. The miRNAs expression data were extracted, and study quality of each article was assessed. The frequently reported miRNAs with consistent regulation were screened out by a meta-profiling algorithm. The putative targets of consistently expressed miRNAs were predicted by using four target prediction tools (TargetScan, PicTar, miRanda, miRDB), and gene ontology pathway enrichment analysis (KEGG and Panther pathways) of the miRNA targets were carried out with GeneCodis web tool. Results: A total of 194 related literatures were retrieved in four databases. One hundred and thirty four differentially expressed miRNAs were found in the 12 microRNA expression profiling studies that compared endometriosis tissues with normal tissues, with 28 miRNAs reported in at least two studies, and 9882 candidate genes retrieved for 13 consistently expressed miRNAs. Kyoto encyclopedia of genes and genomes (KEGG) and Panther pathways enrichment analysis showed that endometriosis related differently expressed miRNA targets were mainly enriched in cancer, endocytosis, Wnt signalling pathway, and angiogenesis. It showed that these differently expressed miRNAs and gene are potential biomarkers of endometriosis. Conclusion: miRNAs appear to be potent regulators of gene expression in endometriosis and its associated reproductive disorders, raising the prospect of using miRNAs as biomarkers and therapeutic agent in endometriosis. PMID:26124927

  4. A single-chain variable fragment intrabody prevents intracellular polymerization of Z α1-antitrypsin while allowing its antiproteinase activity

    PubMed Central

    Ordóñez, Adriana; Pérez, Juan; Tan, Lu; Dickens, Jennifer A.; Motamedi-Shad, Neda; Irving, James A.; Haq, Imran; Ekeowa, Ugo; Marciniak, Stefan J.; Miranda, Elena; Lomas, David A.

    2015-01-01

    Mutant Z α1-antitrypsin (E342K) accumulates as polymers within the endoplasmic reticulum (ER) of hepatocytes predisposing to liver disease, whereas low levels of circulating Z α1-antitrypsin lead to emphysema by loss of inhibition of neutrophil elastase. The ideal therapy should prevent polymer formation while preserving inhibitory activity. Here we used mAb technology to identify interactors with Z α1-antitrypsin that comply with both requirements. We report the generation of an mAb (4B12) that blocked α1-antitrypsin polymerization in vitro at a 1:1 molar ratio, causing a small increase of the stoichiometry of inhibition for neutrophil elastase. A single-chain variable fragment (scFv) intrabody was generated based on the sequence of mAb4B12. The expression of scFv4B12 within the ER (scFv4B12KDEL) and along the secretory pathway (scFv4B12) reduced the intracellular polymerization of Z α1-antitrypsin by 60%. The scFv4B12 intrabody also increased the secretion of Z α1-antitrypsin that retained inhibitory activity against neutrophil elastase. MAb4B12 recognized a discontinuous epitope probably located in the region of helices A/C/G/H/I and seems to act by altering protein dynamics rather than binding preferentially to the native state. This novel approach could reveal new target sites for small-molecule intervention that may block the transition to aberrant polymers without compromising the inhibitory activity of Z α1-antitrypsin.—Ordóñez, A., Pérez, J., Tan, L., Dickens, J. A., Motamedi-Shad, N., Irving, J. A., Haq, I., Ekeowa, U., Marciniak, S. J., Miranda, E., Lomas, D. A. A single-chain variable fragment intrabody prevents intracellular polymerization of Z α1-antitrypsin while allowing its antiproteinase activity. PMID:25757566

  5. Cuckoo in the Nest: The Fate of the Original Moons of Neptune

    NASA Astrophysics Data System (ADS)

    Cuk, Matija; Hamilton, Douglas P.

    2016-10-01

    Neptune's moon Triton is the largest captured satellite in the solar system, as indicated by its inclined retrograde orbit. The most likely mechanism for its capture is binary disruption, which ejected its former binary companion and placed Triton on a large, eccentric orbit around Neptune (Agnor and Hamilton 2006). While the tides would in principle circularize Triton's orbit (Goldreich et al. 1989), Triton's early orbit would have evolved much faster through interactions with preexisting moons of Neptune (Cuk and Gladman 2005). Assuming that the pre-existing moons of Neptune were similar to those of Uranus, analytical estimates are unclear on which outcome is most likely during moon-moon scattering. Cuk and Gladman (2005) suggested that collisions among the regular moons happen first, while Nogueira et al. (2011) find that collisions between Triton and an old moon, or an ejection should happen first. Here we use the general purpose (T+U) symplectic integrator to explore this short-lived epoch of orbit crossing in the Neptunian system. Our preliminary results indicate that Triton might have collided with one of the preexisting moons of Neptune before the regular satellites could have been destroyed in mutual collisions. Goldreich et al. (1989) claimed that a collision with a moon larger than Miranda would destroy Triton and therefore could be ruled out. However, using modern collisional disruption estimated from Stewart and Leinhardt (2012), we find that Triton could have accreted a 1000-km moon at relevant velocities without being disrupted. The product of this merger would have a much tighter orbit as the accreted moon would not have been retrograde like Triton. At the meeting we will present a more detailed exploration of possible post-capture configurations, and report quantitative probabilities for different outcomes of this exciting and violent episode of Triton's history.

  6. Radiogenic heating of comets by 26Al and implications for their time of formation.

    PubMed

    Prialnik, D; Bar-Nun, A; Podolak, M

    1987-08-15

    The effect of radiogenic heating on the thermal evolution of spherical icy bodies with radii 1 km < R < 100 km was investigated. The radioisotopes considered were 26Al, 40K, 232Th, 235U, and 238U. Except for the 26Al abundance, which was varied, the other initial abundances were kept fixed, at values derived from those of chondritic meteorites and corresponding to a gas-to-dust ratio of 1. The initial models were homogeneous and isothermal (To = 10 K) amorphous ice spheres, in a circular orbit at 10(4) AU from the Sun. The main object of this study was to examine the conditions under which the transition temperature from amorphous into cubic ice (Ta = 137 K) would be reached. It was shown that the influence of the short-lived radionuclide 26Al dominates the effect of other radioactive species for bodies of radii up to approximately 50 km. Consequently, if we require comets to retain their ice in amorphous form, as suggested by observations, an upper limit of approximately 4 x 10(-9) is obtained for the initial 26Al abundance in comets, a factor of 100 lower than that of the inclusions in the Allende meteorite. A lower limit for the formation time of comets may thus be derived. The possibility of a coexistence of molten cometary cores and extended amorphous ice mantles is ruled out. Larger icy spheres (R > 100 km) reached Ta even in the absence of 26Al, due to the decay of the other radionuclides. As a result, a crystalline core formed whose relative size depended on the composition assumed. Thus the outermost icy satellites in the solar system, which might have been formed of ice in the amorphous state, have probably undergone crystallization and may have exhibited eruptive activity when the gas trapped in the amorphous ice was released (e.g., Miranda).

  7. [Influence of helminthic infections and nutritional status on immune response in Venezuelan children].

    PubMed

    Ortiz, D; Afonso, C; Hagel, I; Rodriguez, O; Ortiz, C; Palenque, M; Lynch, N R

    2000-09-01

    We investigated the influence of nutritional status, as determined from anthropometric measurement, and of helminthic infections on the immune response of children of low socioeconomic status in two rural communities in Venezuela: El Cardón in the state of Nueva Esparta and San Daniel in the state of Miranda. A total of 125 boys and girls between 2 and 15 years old participated in the study. Their socioeconomic stratum was determined by a modified Graffar method. A physical examination was performed, as was also an anthropometric evaluation that took into account three indicators--weight-for-height, weight-for-age, and height-for-age--according to parameters established by the World Health Organization. Other examinations included feces, secretory IgA in saliva, total serum IgE, and anti-Ascaris-specific immunoglobulins. The children in both of the communities were in strata IV and V of the of Graffar scale, with a significantly greater number of stratum V inhabitants in San Daniel (P < 0.001). The results suggest that exposure level and individual susceptibility to the parasites are determining factors in parasitic infection and immune system behavior. The intensity of the parasitic burden plays an important role in stimulating polyclonal IgE, which diminishes the effectiveness of the specific response to those infections. On the other hand, nutritional deficiencies could change the immune mechanisms of the mucous membranes, negatively influence the synthesis of secretory IgA, and stimulate the production of polyclonal IgE. Poor sanitary and socioeconomic conditions promote more exposure to gastrointestinal parasites and a deficient nutritional status, which modulates the immune response and affects serum IgE and secretory IgA production mechanisms. PMID:11036425

  8. MicroRNA-382 induced by HIF-1α is an angiogenic miR targeting the tumor suppressor phosphatase and tensin homolog.

    PubMed

    Seok, Jin-Kyung; Lee, Sun Hee; Kim, Min Jung; Lee, You-Mie

    2014-07-01

    Recent studies have revealed that microRNAs (miRs) play important roles in the regulation of angiogenesis. In this study, we have characterized miR-382 upregulation by hypoxia and the functional relevance of miR-382 in tumor angiogenesis. miRs induced by hypoxia in MKN1 human gastric cancer cells were investigated using miRNA microarrays. We selected miR-382 and found that the expression of miR-382 was regulated by HIF-1α. Conditioned media (CM) from MKN1 cells transfected with a miR-382 inhibitor (antagomiR-382) under hypoxic conditions significantly decreased vascular endothelial cell (EC) proliferation, migration and tube formation. Algorithmic programs (Target Scan, miRanda and cbio) predicted that phosphatase and tensin homolog (PTEN) is a target gene of miR-382. Deletion of miR382-binding sequences in the PTEN mRNA 3'-untranslated region (UTR) diminished the luciferase reporter activity. Subsequent study showed that the overexpression of miR-382 or antagomiR-382 down- or upregulated PTEN and its downstream target AKT/mTOR signaling pathway, indicating that PTEN is a functional target gene of miR-382. In addition, PTEN inhibited miR-382-induced in vitro and in vivo angiogenesis as well as VEGF secretion, and the inhibition of miR-382 expression reduced xenograft tumor growth and microvessel density in tumors. Taken together, these results suggest that miR-382 induced by hypoxia promotes angiogenesis and acts as an angiogenic oncogene by repressing PTEN.

  9. Hemorrhagic, coagulant and fibrino(geno)lytic activities of crude venom and fractions from mapanare (Bothrops colombiensis) snakes.

    PubMed

    Girón, María E; Salazar, Ana M; Aguilar, Irma; Pérez, John C; Sánchez, Elda E; Arocha-Piñango, Carmen L; Rodríguez-Acosta, Alexis; Guerrero, Belsy

    2008-01-01

    Bothrops colombiensis venom from two similar geographical locations were tested for their hemostatic functions and characterized by gel-filtration chromatography and SDS-PAGE electrophoresis. The snakes were from Caucagua and El Guapo towns of the Venezuelan state of Miranda. Fibrino(geno)lytic, procoagulant, hemorrhagic, lethal activities, gel-filtration chromatography and SDS-PAGE profiles were analyzed and compared for both venoms. The highest hemorrhagic activity of 5.3 mug was seen in El Guapo venom while Caucagua venom had the lowest LD(50) of 5.8 mg/kg. Both venoms presented similar thrombin-like activity. El Guapo showed a factor Xa-like activity two times higher than Caucagua. Differences were observed in kallikrein-like and t-PA activities, being highest in El Guapo. Caucagua venom showed the maximum fibrin lysis. Both crude venom runs on Sephadex G-100 chromatography gave fraction SII with the high fibrinolytic activity. Proteases presented in SII fractions and eluted from Benzamidine-Sepharose (not bound to the column) provoked a fast degradation of fibrinogen alpha chains and a slower degradation of beta chains, which could possibly be due to a higher content of alpha fibrinogenases in these venoms. The fibrinogenolytic activity was decreased by metalloprotease inhibitors. The results suggested that metalloproteases in SII fractions were responsible for the fibrinolytic activity. The analysis of samples for fibrin-zymography of SII fractions showed an active band with a molecular mass of approximately 30 kDa. These results reiterate the importance of using pools of venoms for antivenom immunization, to facilitate the neutralization of the maximum potential number of toxins.

  10. High-Throughput Sequencing Identifies Novel and Conserved Cucumber (Cucumis sativus L.) microRNAs in Response to Cucumber Green Mottle Mosaic Virus Infection

    PubMed Central

    Liang, C. Q.; Jiang, N.; Liu, P. F.; Li, J. Q.

    2015-01-01

    Seedlings of Cucumis sativus L. (cv. 'Zhongnong 16') were artificially inoculated with Cucumber green mottle mosaic virus (CGMMV) at the three-true-leaf stage. Leaf and flower samples were collected at different time points post-inoculation (10, 30 and 50 d), and processed by high throughput sequencing analysis to identify candidate miRNA sequences. Bioinformatic analysis using screening criteria, and secondary structure prediction, indicated that 8 novel and 23 known miRNAs (including 15 miRNAs described for the first time in vivo) were produced by cucumber plants in response to CGMMV infection. Moreover, gene expression profiles (p-value <0.01) validated the expression of 3 of the novel miRNAs and 3 of the putative candidate miRNAs and identified a further 82 conserved miRNAs in CGMMV-infected cucumbers. Gene ontology (GO) analysis revealed that the predicted target genes of these 88 miRNAs, which were screened using the psRNATarget and miRanda algorithms, were involved in three functional categories: 2265 in molecular function, 1362 as cellular components and 276 in biological process. The subsequent Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that the predicted target genes were frequently involved in metabolic processes (166 pathways) and genetic information processes (40 pathways) and to a lesser degree the biosynthesis of secondary metabolites (12 pathways). These results could provide useful clues to help elucidate host-pathogen interactions in CGMMV and cucumber, as well as for the screening of resistance genes. PMID:26076360

  11. Ocular Perfusion Pressure and Pulsatile Ocular Blood Flow in Normal and Systemic Hypertensive Patients

    PubMed Central

    Figueiredo, Carlos R; Miranda, Rafaela Morais; Cunha, Patricia LT; M Kanadani, Tereza Cristina; Dorairaj, Syril

    2015-01-01

    ABSTRACT Purpose: Glaucomatous neuropathy can be a consequence of insufficient blood supply, increase in intraocular pressure (IOP), or other risk factors that diminish the ocular blood flow. To determine the ocular perfusion pressure (OPP) in normal and systemic hypertensive patients. Materials and methods: One hundred and twenty-one patients were enrolled in this prospective and comparative study and underwent a complete ophthalmologic examination including slit lamp examination, Goldmann applanation tonometry, stereoscopic fundus examination, and pulsatile ocular blood flow (POBF) measurements. The OPP was calculated as being the medium systemic arterial pressure (MAP) less the IOP. Only right eye values were considered for calculations using Student’s t-test. Results: The mean age of the patients was 57.5 years (36-78), and 68.5% were women. There was a statistically significant difference in the OPP of the normal and systemic hypertensive patients (p < 0.05). The difference in the OPP between these groups varied between 8.84 and 17.9 mm Hg. Conclusion: The results of this study suggest that although the systemic hypertensive patients have a higher OPP in comparison to normal patients, this increase does not mean that they also have a higher OBF (as measured by POBF tonograph). This may be caused by chronic changes in the vascular network and in the blood hemodynamics in patients with systemic hypertension. How to cite this article: Kanadani FN, Figueiredo CR, Miranda RM, Cunha PLT, Kanadani TCM, Dorairaj S. Ocular Perfusion Pressure and Pulsatile Ocular Blood Flow in Normal and Systemic Hypertensive Patients. J Curr Glaucoma Pract 2015;9(1):16-19. PMID:26997827

  12. Bat-species richness in the Pantanal floodplain and its surrounding uplands.

    PubMed

    Alho, C J R; Fischer, E; Oliveira-Pissini, L F; Santos, C F

    2011-04-01

    We studied the bat fauna of the Pantanal floodplain and its surrounding plateaus in Mato Grosso do Sul, Brazil, based on the scientific collection at Universidade Anhanguera-Uniderp and on the Projeto Morcegos do Pantanal data bank at UFMS, comprising 9,037 captures of 56 species recorded from 1994 to 2007. The Pantanal surveys were carried out in the Nhecolândia, Aquidauana, Miranda, and Paraguai sub-regions; the uplands surveys took place in the Maracaju, Bodoquena, and Urucum formations. Bat specimens were mist-netted over 376 nights in 35 sites, predominantly near fruiting trees, bat shelters, and forest patches. In the floodplain 46 species were recorded (n = 6,292 individuals), and 44 species were found in the uplands (n = 2,745 individuals). Six families were recorded: Phyllostomidae (30 species), Molossidae (12 species), Verpertilionidae (nine species) Noctilionidae (two species), Emballorunidae (two species) and Mormoopidae (one species). The bat fauna was predominantly composed of insectivore (32) and frugivore (15) species. The frugivorous Artibeus planirostris (n = 3,101 individuals) was the commonest species in floodplain and uplands. Other common species were Myotis nigricans (n = 762), Molossus molossus (n = 692), Noctilio albiventris (n = 681), Platyrrhinus lineatus (n = 633), Sturnira lilium (n = 461), Carollia perspicillata (n = 451), Glossophaga soricina (n = 436), Artibeus lituratus (n = 320), and Desmodus rotundus (n = 281). In the floodplain there were three insectivores among the most common species, contrasting with the uplands dominated by the frugivores. The diversity for the 35 sites assembled (H' = 2.5) is comparable to that recorded for tropical forests. The bat fauna presented here represents 34% of the Brazilian bat species, and 62% of species reported for the Upper Paraguay River Basin. Additionally, five species are reported for the first time in Mato Grosso do Sul.

  13. miR-98 functions as a tumor suppressor in salivary adenoid cystic carcinomas

    PubMed Central

    Liu, Xiaonan; Zhang, Wenchao; Guo, Hua; Yue, Jiuling; Zhuo, Shanshan

    2016-01-01

    Purpose miR-98, a member of the let-7 family of microRNAs, is downregulated in many malignant tumors and has been correlated with tumor progression. However, the roles of miR-98 in salivary adenoid cystic carcinomas (SACCs) are still unclear. Thus, we explored the role of miR-98 in the pathogenesis of SACCs. Methods Reverse transcription-polymerase chain reaction was used to quantify miR-98 expression in SACC cell lines as well as in the primary tumors and adjacent tissues. Target gene prediction was carried out using softwares such as miRanda, PicTar, and TargetScan, and the neuroblastoma RAS viral oncogene homologue (N-RAS) was chosen as a potential target gene. Subsequently, the regulatory role of miR-98 on N-RAS expression was examined by Western blotting and immunofluorescence assays. N-RAS expression was detected in SACC tissues and SACC cell lines using immunohistochemistry and Western blot, respectively. Furthermore, the associations between N-RAS expression and clinicopathological features were analyzed. Finally, the effects of miR-98 on the proliferation and metastasis of SACC cell lines were determined. Results miR-98 was downregulated in primary tissues and ACC-M cells. Meanwhile, N-RAS expression was significantly higher in SACC tissues than that in the adjacent tissues, and its overexpression was significantly associated with the clinical stage and tumor size. In addition, the overexpression of miR-98 in ACC-M cells inhibited cell proliferation, invasion, and migration in vitro. It also significantly decreased the expression of N-RAS and inhibited signaling through the PI3K/AKT and MAPK/ERK pathways. Conclusion These results indicate that miR-98 possibly acts as a tumor suppressor in SACC by negatively regulating the oncogene N-RAS. PMID:27042128

  14. Trypanorhynch cestodes (Eutetrarhynchidae) from batoids along the coast of Argentina, including the description of new species in Dollfusiella Campbell et Beveridge, 1994 and Mecistobothrium Heinz et Dailey, 1974.

    PubMed

    Menoret, Adriana; Ivanov, Veronica A

    2015-09-07

    During a recent parasitological survey of elasmobranchs along the coast of Argentina, two new species of eutetrarhynchid cestodes of the genera Dollfusiella Campbell et Beveridge, 1994 and Mecistobothrium Heinz et Dailey, 1974 were collected from batoids. Dollfusiella acuta sp. n. was found in four arhynchobatid skates, i.e. Sympterygia acuta Garman (type host), Sympterygia bonapartii Müller et Henle, Atlantoraja castelnaui (Miranda Ribeiro) and Atlantoraja platana (Günther), and Mecistobothrium oblongum sp. n. in the eagle ray Myliobatis goodei Garman. Dollfusiella acuta sp. n. has a tentacular armature consisting of basal rows of uncinate hooks, a distinct basal swelling with uncinate, falcate and bill hooks, and a heteroacanthous metabasal armature with heteromorphous hooks (bothrial uncinate hooks and antibothrial falcate hooks), hooks 1(1') not separated, testes in two columns and an internal seminal vesicle. The tentacular armature of M. oblongum sp. n. is characterised by basal rows of uncinate hooks, a basal swelling with uncinate and falcate hooks, a typical heteroacanthous metabasal armature with heteromorphous hooks (uncinate and falcate to spiniform), and hooks 1(1') separated and of a constant size along the tentacle. It also possesses an elongate scolex, numerous testes arranged in 5-6 irregular columns, and an internal seminal vesicle. The discovery of M. oblongum in M. goodei represents the first record of species of Mecistobothrium in the southwestern Atlantic Ocean. An amended description of Dollfusiella cortezensis (Friggens et Duszynski, 2005) is also provided to clarify details of the scolex and tentacular armature. Members of Dollfusiella in the southwestern Atlantic are specific to a single host species or to a particular host family, while M. oblongum was found in a single host species. Although globally some plerocerci of eutetrarhynchids have been found in teleosts, extensive examination of teleosts off the coast of Argentina suggests

  15. Identification of recurrence-related genes by integrating microRNA and gene expression profiling of gastric cancer.

    PubMed

    Yan, Zhi; Xiong, Yimin; Xu, Weitian; Li, Min; Cheng, Yi; Chen, Fang; Ding, Shifang; Xu, Hualin; Zheng, Guorong

    2012-12-01

    We previously analyzed the microRNA (miRNA) expression pattern in gastric cancer with and without recurrence and obtained 17 differentially expressed miRNAs with potential to predict recurrence risk for GC patients. In the present study, we aimed to investigate recurrence-related genes which may be regulated by the differentially expressed miRNAs identified in our prior research. Three different miRNA target gene databases (miRanda, TargetScan and PicTar) were used for searching the potential genes regulated by miRNAs. A combination was performed between miRNA target genes and recurrence-related gene expression profiling. Three bioinformatics algorithms (PAM, SVM and RF) were used to feature recurrence-related gene selection. In addition, we validated the expression levels of the genes in GC patients using real-time PCR. A total of 3,263 genes were identified as potential targets of 17 miRNAs. We identified 2,736 differential expressed genes using the SAM method based on 22K oligo microarray data which included 7 recurrence and 4 without recurrence GC samples. Combining the target genes regulated by miRNAs and the differentially expressed genes between recurrence and non-recurrence groups, we identified 228 differential genes for further study. Finally, we identified HNRPA0 and PRDM4 as risk biomarkers of GC patients, which were regulated by hsa-miR‑194 and hsa-miR-373, respectively. Our data indicated that HNRPA0 and PRDM4 may be involved in the recurrence process of GC and have potential to act as new prognostic biomarkers in predicting recurrence risk for gastric cancer patients.

  16. Practical Aspects of microRNA Target Prediction.

    PubMed

    Witkos, T M; Koscianska, E; Krzyzosiak, W J

    2011-03-01

    microRNAs (miRNAs) are endogenous non-coding RNAs that control gene expression at the posttranscriptional level. These small regulatory molecules play a key role in the majority of biological processes and their expression is also tightly regulated. Both the deregulation of genes controlled by miRNAs and the altered miRNA expression have been linked to many disorders, including cancer, cardiovascular, metabolic and neurodegenerative diseases. Therefore, it is of particular interest to reliably predict potential miRNA targets which might be involved in these diseases. However, interactions between miRNAs and their targets are complex and very often there are numerous putative miRNA recognition sites in mRNAs. Many miRNA targets have been computationally predicted but only a limited number of these were experimentally validated. Although a variety of miRNA target prediction algorithms are available, results of their application are often inconsistent. Hence, finding a functional miRNA target is still a challenging task. In this review, currently available and frequently used computational tools for miRNA target prediction, i.e., PicTar, TargetScan, DIANA-microT, miRanda, rna22 and PITA are outlined and various practical aspects of miRNA target analysis are extensively discussed. Moreover, the performance of three algorithms (PicTar, TargetScan and DIANA-microT) is both demonstrated and evaluated by performing an in-depth analysis of miRNA interactions with mRNAs derived from genes triggering hereditary neurological disorders known as trinucleotide repeat expansion diseases (TREDs), such as Huntington's disease (HD), a number of spinocerebellar ataxias (SCAs), and myotonic dystrophy type 1 (DM1).

  17. Karyotype analysis of seven species of the tribe Lophiohylini (Hylinae, Hylidae, Anura), with conventional and molecular cytogenetic techniques

    PubMed Central

    Gruber, Simone Lilian; Haddad, Célio Fernando Baptista; Kasahara, Sanae

    2012-01-01

    Abstract Few species of the tribe Lophiohylini have been karyotyped so far, and earlier analyses were performed mainly with standard staining. Based on the analysis of seven species with use of routine banding and molecular cytogenetic techniques, the karyotypes were compared and the cytogenetic data were evaluated in the light of the current phylogenies. A karyotype with 2n = 24 and NOR in the chromosome 10 detected by Ag-impregnation and FISH with an rDNA probe was shared by Aparasphenodon bokermanni Miranda-Ribeiro, 1920, Itapotihyla langsdorffii (Duméril and Bibron, 1841), Trachycephalus sp., Trachycephalus mesophaeus (Hensel, 1867), and Trachycephalus typhonius (Linnaeus, 1758). Phyllodytes edelmoi Peixoto, Caramaschi et Freire, 2003 and Phyllodytes luteolus (Wied-Neuwied, 1824) had reduced the diploid number from 2n = 24 to 2n = 22 with one of the small-sized pairs clearly missing, and NOR in the large chromosome 2, but the karyotypes were distinct regarding the morphology of chromosome pairs 4 and 6. Based on the cytogenetic and phylogenetic data, it was presumed that the chromosome evolution occurred from an ancestral type with 2n = 24, in which a small chromosome had been translocated to one or more unidentified chromosomes. Whichever hypothesis is more probable, other rearrangements should have occurred later, to explain the karyotype differences between the two species of Phyllodytes Wagler, 1830. The majority of the species presented a small amount of centromeric C-banded heterochromatin and these regions were GC-rich. The FISH technique using a telomeric probe identified the chromosome ends and possibly (TTAGGG)n-like sequences in the repetitive DNA out of the telomeres in Itapotihyla langsdorffii and Phyllodytes edelmoi. The data herein obtained represent an important contribution for characterizing the karyotype variability within the tribe Lophiohylini scarcely analysed so far. PMID:24260681

  18. Escherichia coli EDL933 requires gluconeogenic nutrients to successfully colonize the intestines of streptomycin-treated mice precolonized with E. coli Nissle 1917.

    PubMed

    Schinner, Silvia A C; Mokszycki, Matthew E; Adediran, Jimmy; Leatham-Jensen, Mary; Conway, Tyrrell; Cohen, Paul S

    2015-05-01

    Escherichia coli MG1655, a K-12 strain, uses glycolytic nutrients exclusively to colonize the intestines of streptomycin-treated mice when it is the only E. coli strain present or when it is confronted with E. coli EDL933, an O157:H7 strain. In contrast, E. coli EDL933 uses glycolytic nutrients exclusively when it is the only E. coli strain in the intestine but switches in part to gluconeogenic nutrients when it colonizes mice precolonized with E. coli MG1655 (R. L. Miranda et al., Infect Immun 72:1666-1676, 2004, http://dx.doi.org/10.1128/IAI.72.3.1666-1676.2004). Recently, J. W. Njoroge et al. (mBio 3:e00280-12, 2012, http://dx.doi.org/10.1128/mBio.00280-12) reported that E. coli 86-24, an O157:H7 strain, activates the expression of virulence genes under gluconeogenic conditions, suggesting that colonization of the intestine with a probiotic E. coli strain that outcompetes O157:H7 strains for gluconeogenic nutrients could render them nonpathogenic. Here we report that E. coli Nissle 1917, a probiotic strain, uses both glycolytic and gluconeogenic nutrients to colonize the mouse intestine between 1 and 5 days postfeeding, appears to stop using gluconeogenic nutrients thereafter in a large, long-term colonization niche, but continues to use them in a smaller niche to compete with invading E. coli EDL933. Evidence is also presented suggesting that invading E. coli EDL933 uses both glycolytic and gluconeogenic nutrients and needs the ability to perform gluconeogenesis in order to colonize mice precolonized with E. coli Nissle 1917. The data presented here therefore rule out the possibility that E. coli Nissle 1917 can starve the O157:H7 E. coli strain EDL933 of gluconeogenic nutrients, even though E. coli Nissle 1917 uses such nutrients to compete with E. coli EDL933 in the mouse intestine.

  19. Detection of piRNAs in whitespotted bamboo shark liver.

    PubMed

    Yang, Lingrong; Ge, Yinghua; Cheng, Dandan; Nie, Zuoming; Lv, Zhengbing

    2016-09-15

    Piwi-interacting RNAs (piRNAs) are 26 to 31-nt small non-coding RNAs that have been reported mostly in germ-line cells and cancer cells. However, the presence of piRNAs in the whitespotted bamboo shark liver has not yet been reported. In a previous study of microRNAs in shark liver, some piRNAs were detected from small RNAs sequenced by Solexa technology. A total of 4857 piRNAs were predicted and found in shark liver. We further selected 17 piRNAs with high and significantly differential expression between normal and regenerative liver tissues for subsequent verification by Northern blotting. Ten piRNAs were further identified, and six of these were matched to known piRNAs in piRNABank. The actual expression of six known and four novel piRNAs was validated by qRT-PCR. In addition, a total of 401 target genes of the 10 piRNAs were predicted by miRanda. Through GO and pathway function analyses, only five piRNAs could be annotated with eighteen GO annotations. The results indicated that the identified piRNAs are involved in many important biological responses, including immune inflammation, cell-specific differentiation and development, and angiogenesis. This manuscript provides the first identification of piRNAs in the liver of whitespotted bamboo shark using Solexa technology as well as further elucidation of the regulatory role of piRNAs in whitespotted bamboo shark liver. These findings may provide a useful resource and may facilitate the development of therapeutic strategies against liver damage. PMID:27267405

  20. Identification of target genes and pathways associated with chicken microRNA miR-143.

    PubMed

    Trakooljul, N; Hicks, J A; Liu, H-C

    2010-08-01

    MicroRNA (miRNA) is a family of small regulatory RNAs that post-transcriptionally regulate many biological functions including growth and development. Recently, the expression of chicken miRNA miR-143 was identified by using a deep sequencing approach. In other vertebrate species, miR-143 functions as a regulator of adipocyte differentiation and as a tumour suppressor. However, little is known about the biological function(s) of miR-143 in chickens. To study the functions of chicken miR-143, DNA microarray analysis and a dual luciferase reporter assay were employed to identify genes directly targeted by miR-143 as well as other biologically relevant genes. Microarray analysis indicated that 124 genes were differentially expressed upon in vitro anti-miR-143 treatment in embryonic chick splenocytes (P-value cutoff <0.01). Many of these genes are associated with cell proliferation, apoptosis and tumourigenesis. Six of the up-regulated genes possess at least one potential miR-143 binding site in their 3'UTRs, of these the binding sites of PYCR2, PSTPIP1 and PDCD5 were validated by an in vitro luciferase reporter assay. In addition, several potential targets with important biological functions were identified by the miRanda algorithm and experimentally confirmed. These targets include KLF5, MAP3K7, TARDBP and UBE2E3, which have conserved miR-143 binding sites across multiple vertebrate species. Potential chicken specific miR-143 target sites were also validated for LPIN1, PCK2, PYCR2, METTL14, SLC2A2 and TNFSF10. Overall, the current study suggests that miR-143 is ubiquitously expressed among tissues and is likely to be involved in the regulation of cell proliferation and apoptosis.

  1. High-Throughput Sequencing Identifies Novel and Conserved Cucumber (Cucumis sativus L.) microRNAs in Response to Cucumber Green Mottle Mosaic Virus Infection.

    PubMed

    Liu, H W; Luo, L X; Liang, C Q; Jiang, N; Liu, P F; Li, J Q

    2015-01-01

    Seedlings of Cucumis sativus L. (cv. 'Zhongnong 16') were artificially inoculated with Cucumber green mottle mosaic virus (CGMMV) at the three-true-leaf stage. Leaf and flower samples were collected at different time points post-inoculation (10, 30 and 50 d), and processed by high throughput sequencing analysis to identify candidate miRNA sequences. Bioinformatic analysis using screening criteria, and secondary structure prediction, indicated that 8 novel and 23 known miRNAs (including 15 miRNAs described for the first time in vivo) were produced by cucumber plants in response to CGMMV infection. Moreover, gene expression profiles (p-value <0.01) validated the expression of 3 of the novel miRNAs and 3 of the putative candidate miRNAs and identified a further 82 conserved miRNAs in CGMMV-infected cucumbers. Gene ontology (GO) analysis revealed that the predicted target genes of these 88 miRNAs, which were screened using the psRNATarget and miRanda algorithms, were involved in three functional categories: 2265 in molecular function, 1362 as cellular components and 276 in biological process. The subsequent Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that the predicted target genes were frequently involved in metabolic processes (166 pathways) and genetic information processes (40 pathways) and to a lesser degree the biosynthesis of secondary metabolites (12 pathways). These results could provide useful clues to help elucidate host-pathogen interactions in CGMMV and cucumber, as well as for the screening of resistance genes.

  2. Dynamic Change and Target Prediction of Axon-Specific MicroRNAs in Regenerating Sciatic Nerve

    PubMed Central

    Phay, Monichan; Kim, Hak Hee; Yoo, Soonmoon

    2015-01-01

    Injury to axons in the peripheral nervous system induces rapid and local regenerative responses to form a new growth cone, and to generate a retrogradely transporting injury signal. The evidence for essential roles of intra-axonal protein synthesis during regeneration is now compelling. MicroRNA (miRNA) has recently been recognized as a prominent player in post-transcriptional regulation of axonal protein synthesis. Here, we directly contrast temporal changes of miRNA levels in the sciatic nerve following injury, as compared to those in an uninjured nerve using deep sequencing. Small RNAs (<200 nucleotides in length) were fractionated from the proximal nerve stumps to improve the representation of differential miRNA levels. Of 141 axoplasmic miRNAs annotated, 63 rat miRNAs showed significantly differential levels at five time points following injury, compared to an uninjured nerve. The differential changes in miRNA levels responding to injury were processed for hierarchical clustering analyses, and used to predict target mRNAs by Targetscan and miRanda. By overlapping these predicted targets with 2,924 axonally localizing transcripts previously reported, the overlapping set of 214 transcripts was further analyzed by the Gene Ontology enrichment and Ingenuity Pathway Analyses. These results suggest the possibility that the potential targets for these miRNAs play key roles in numerous neurological functions involved in ER stress response, cytoskeleton dynamics, vesicle formation, and neuro-degeneration and-regeneration. Finally, our results suggest that miRNAs could play a direct role in regenerative response and may be manipulated to promote regenerative ability of injured nerves. PMID:26331719

  3. Detection of Theileria equi and Babesia caballi infections in Venezuelan horses using Competitive-Inhibition ELISA and PCR.

    PubMed

    Rosales, Romel; Rangel-Rivas, Ariadna; Escalona, América; Jordan, Luis Segundo; Gonzatti, Mary Isabel; Aso, Pedro Maria; Perrone, Trina; Silva-Iturriza, Adriana; Mijares, Alfredo

    2013-09-01

    The focus of this study was the detection of equine piroplasmosis in Distrito Capital, Miranda, Aragua, Guárico and Apure States from Venezuela, using two methods: Competitive-Inhibition ELISA and multiplex PCR and the analysis of the possible differences in occurrence in relation to the primary purpose of the horses, which is related to varied degrees of exposure to tick. Antibody levels to Babesia caballi and Theileria equi were assessed in 694 equine serum samples using Competitive-Inhibition ELISA, while PCR assays were performed in 136 horses, using two sets of oligonucleotides to establish the presence of T. equi, B. caballi or both. The overall seroprevalence of equine piroplasmosis was 50.2%, antibodies to B. caballi were found in 161 horses (23.2%), whereas 97 (14.0%) were seropositive to T. equi and 90 (13.0%) were positives to both parasites (mixed infections). PCR determinations (n=136) showed a prevalence of 66.2%, distributed in 84 (61.8% positives) for T. equi and, 6 (4.4%) were positive to both parasites. The cELISA showed higher levels of prevalence of B. caballi and mixed infections, as compared to the PCR method. This discrepancy can be explained by the different parameters that are evaluated by each technique, PCR detect the parasite itself, while cELISA detects antibodies to the parasite. By PCR, the highest prevalence was found in Apure state, where 92.3% of the samples were positive to T. equi infections. In this locality, free grazing animals are used for livestock management. This high prevalence may be linked to the tick species present in that area. More epidemiological studies will be necessary to assess the epidemiological status of equine piroplasmosis in Venezuela.

  4. G. P. Kuiper's Early Studies of Planets

    NASA Astrophysics Data System (ADS)

    Cruikshank, D. P.

    2005-08-01

    Gerard P. Kuiper was born on December 7, 1905; this is his centennial year. While he had an early interest in Solar System bodies, writing an extensive review about Mars for the popular Dutch astronomy journal, Hemel en Dampkring in 1931, Kuiper's first important observations began in 1944, when he discovered the atmosphere of Titan. In a letter dated February 29, 1944, to Lick Observatory director Joseph H. Moore, Kuiper noted that, ``The only reason I happened to observe the planets and the 10 brightest satellites was that they were nicely lined up in a region of the sky where I had run out of program stars (stars of large proper motion and parallax)." These spectroscopic observations were obtained with the new McDonald 82-inch telescope during a break from Kuiper's war-time work at Harvard's Radio Research Laboratory. In a letter of congratulations, his friend S. Chandrasekhar wrote, ``It is only on the impact of such discoveries that one realizes afresh the permanent value of science which no war -- not even of Hitler's -- can truly undermine. And it must be of satisfaction to you that if you took a vacation from war-work, it was only to make a fundamental discovery!" Using detectors declassified at the end of World War II, Kuiper began a study of the infrared spectra of planets and stars (with the first publication in 1947) that continued to the time of his death (December 24, 1973). Early in this work, on March 2, 1948, he wrote a lengthy letter to Henry Norris Russell in which he succinctly and enthusiastically summarized his observations and discoveries. Details in this letter give a fascinating perspective on some of the earliest physical studies of Solar System bodies, such as the detection of water ice on Saturn's rings and in the polar cap of Mars, spectral and photometric measurements of Mars' surface and atmospheric haze, and the discovery of Miranda.

  5. Chaco Chachalaca (Ortalis canicollis, Wagler, 1830) feeding ecology in a gallery forest in the South Pantanal (Brazil).

    PubMed

    Ragusa-Netto, J

    2015-01-01

    Cracids are generalist frugivores, which often exploit plant food resources such as flowers and leaves, mainly when fruit production declines. The Chaco chachalaca (Ortalis canicollis) is the most abundant cracid in the Pantanal (Brazil), and particularly common in the gallery forests. However, the factors related to their occurrence in this habitat type are unclear. In this study I describe the feeding habits and feeding niche breadth fluctuations of the Chaco chachalaca in relation to food resources abundance and diversity at the Miranda river gallery forest (Southern Pantanal). I also analyzed the relationships between Chaco chachalacas feeding activity and food resources abundance. This parameter (flowers and fruits) exhibited significant seasonal differences of abundance in which flowers were plentiful at the end of the dry, while fruits were abundant during the early wet season. However, food resources diversity to Chaco chachalacas exhibited no seasonal difference. Their feeding activity paralleled the availability of food resources, so that when some items were massively available an enhanced number of Chaco chachalacas foraged in the gallery forest, particularly during the prolonged dry season when they extensively used flowers and Genipa americana fruits. In fact, the Chaco chachalaca feeding niche breadth value presented low values in this period, while high values were common in the rest of the year. The flexible diet of this cracid, potentially favors their year round presence in the gallery forest, mainly during the prolonged dry season when the propensity for famine might be high. Since the Chaco chachalaca is among the largest and most abundant canopy frugivores in the gallery forest, it may contribute to forest regeneration, an underscored role due to the impact of annual floods and meandering dynamics on tree loss.

  6. GC/MS on an LC/MS instrument using atmospheric pressure photoionization

    NASA Astrophysics Data System (ADS)

    McEwen, Charles N.

    2007-01-01

    Atmospheric pressure (AP) GC/MS was first introduced by Horning et al. [E.C. Horning, M.G. Horning, D.I. Carroll, I. Dzidic, R.N. Stillwell, Anal. Chem. 45 (1973) 936] using 63Ni as a beta-emitter for ionization. Because, at the time special instrumentation was required, the technique was only applied with consistency to negative ion environmental studies where high sensitivity was required [T. Kinouchi, A.T.L. Miranda, L.G. Rushing, F.A. Beland, W.A. Korfmacher, J. High Resolut. Chromatogr., Chromatogr. Commun. 13 (1990) 281]. Currently, AP ion sources are commonly available on LC/MS instruments and recently a method was reported for converting an AP-LC/MS ion source to a combination AP-LC/MS:GC/MS source [C.N. McEwen, R.G. McKay, J. Am. Soc. Mass Spectrom. 16 (2005) 1730]. Here, we report the use of atmospheric pressure photoionization (APPI) with GC/MS and compare this to AP chemical ionization (APCI) GC/MS and electron ionization (EI) GC/MS. Using a nitrogen purge gas, we observe excellent chromatographic resolution and abundant molecular M+ and MH+ ions as well as structurally significant fragment ions. Comparison of a 9.8 eV UV lamp with a 10.6 eV lamp, as expected, shows that the higher energy lamp gives more universal ionization and more fragment ions than the lower energy lamp. While there are clear differences in the fragment ions observed by APPI-MS versus EI-MS, there are also similarities. As might be expected from the ionization mechanism, APPI ionization is similar to low energy EI. These odd electron fragment ions are useful in identifying unknown compounds by comparison to mass spectra in computer libraries.

  7. Children live, feel, and respond to experiences of food insecurity that compromise their development and weight status in peri-urban Venezuela.

    PubMed

    Bernal, Jennifer; Frongillo, Edward A; Herrera, Héctor; Rivera, Juan

    2012-07-01

    Children's experiences of food insecurity (FI) may be conceptually distinct and different from those of adults. Previous study of children's experiences of FI has relied primarily on their parents' perspective. This study explored, described, and conceptualized experiences of FI in children attending 5 public schools in peri-urban areas of the Miranda State, Venezuela, South America using a naturalistic approach. Children aged 10-17 y were studied through focus groups (n = 42) and individual interviews (n = 13). Interviews were recorded, transcribed, and analyzed using grounded theory. Children were cognitively aware of FI, worry in their parents, and causes both external and internal to their households. Children were also emotionally aware of FI, with feelings of concern, anguish, and sadness, and manifestations such as crying. Children reported being physically hungry, experiencing reduced quantity and quality of food intake, having smaller meals, and recognizing thinness and fainting as consequences. Children's responses to FI included reduction of quality and quantity of food, child labor, sacrifice in food consumption, food from waste, support from extended family members, and strategies for purchasing, acquiring, preparing, and cooking food. Children were not always protected, especially when the head of the family was unemployed, had drug-alcohol problems, or was extremely poor. Protection could come from parents to children and from older children to parents and younger children. Children should have certain access to food that is dignified, timely, efficient, and adequate in harmonious social conditions to prevent and resolve situations that compromise their physical, cognitive, and socio-emotional well-being.

  8. A transcribed ultraconserved noncoding RNA, Uc.173, is a key molecule for the inhibition of lead-induced neuronal apoptosis.

    PubMed

    Nan, Aruo; Zhou, Xinke; Chen, Lijian; Liu, Meiling; Zhang, Nan; Zhang, Li; Luo, Yuanwei; Liu, Zhenzhong; Dai, Lijun; Jiang, Yiguo

    2016-01-01

    As a common toxic metal, lead has significant neurotoxicity to brain development. Long non-coding RNAs (lncRNAs) function in multiple biological processes. However, whether lncRNAs are involved in lead-induced neurotoxicity remains unclear. Uc.173 is a lncRNA from a transcribed ultra-conservative region (T-UCR) of human, mouse and rat genomes. We established a lead-induced nerve injury mouse model. It showed the levels of Uc.173 decreased significantly in hippocampus tissue and serum of the model. We further tested the expression of Uc.173 in serum of lead-exposed children, which also showed a tendency to decrease. To explore the effects of Uc.173 on lead-induced nerve injury, we overexpressed Uc.173 in an N2a mouse nerve cell line and found Uc.173 had an inhibitory effect on lead-induced apoptosis of N2a. To investigate the molecular mechanisms of Uc.173 in apoptosis associated with lead-induced nerve injury, we predicted the target microRNAs of Uc.173 by using miRanda, TargetScan and RegRNA. After performing quantitative real-time PCR and bioinformatics analysis, we showed Uc.173 might inter-regulate with miR-291a-3p in lead-induced apoptosis and regulate apoptosis-associated genes. Our study suggests Uc.173 significantly inhibits the apoptosis of nerve cells, which may be mediated by inter-regulation with miRNAs in lead-induced nerve injury.

  9. Humoral immune response and hematologic evaluation of pregnant Jersey cows after vaccination with Anaplasma centrale.

    PubMed

    Meléndez, R D; Toro Benítez, M; Niccita, G; Moreno, J; Puzzar, S; Morales, J

    2003-07-30

    The main objective of this work was to evaluate the safety of an Anaplasma centrale vaccine in pregnant pure bred Jersey cows selected from a herd located at Miranda State, Venezuela. Ten cows of 3-5 months of gestation were chosen and previous vaccination all cows were tested for Anaplasma antibodies by the indirect immunofluorescence assay (IFA), so only seronegative cows were included in the group, and for blood parameters, rectal temperature, and pregnancy. Selected cows were vaccinated intramuscularly with 1ml of an A. centrale live vaccine which had 10(8) A. centrale per ml. Over the next 2 months cows were checked weekly for hematological parameters and Anaplasma antibodies, and then for the next 2 months these evaluations were performed monthly. Among the values monitored were: A. centrale parasitemia, hematocrit, hemoglobin, and white blood cells (WBCs) (neutrophil, lymphocyte and eosinophil counts). Levels of Anaplasma antibodies were measured by IFA. Anaplasma were observed for the first time in blood films of two vaccinated cows at 14 days post-vaccination (PV), 6 out of 10 cows were A. centrale positive at 30 days PV, and all cows were A. centrale positive at 42 days PV. A. centrale often showed low parasitemia, 1-3%. Anaplasma antibodies were detected at day 14 PV in all vaccinated cows with a mean group titre of 360 (range: 80-1280). All vaccinated cows showed few changes in their hematologic parameters or in rectal temperature, and all gave birth to healthy calves. In conclusion, adult pregnant cows were safely vaccinated with this live A. centrale vaccine, which may help to develop a cross-protective immunity against field strains of A. marginale.

  10. Twenty-four new species of Aleiodes Wesmael from the eastern Andes of Ecuador with associated biological information (Hymenoptera, Braconidae, Rogadinae)

    PubMed Central

    Shimbori, Eduardo Mitio; Shaw, Scott Richard

    2014-01-01

    Abstract Aleiodes Wesmael is the most diverse rogadine genus worldwide, with specialized koinobiont endoparasitic development in Lepidoptera caterpillars resulting in mummification of the host remains. This paper focuses on describing new Aleiodes species from the Yanayacu Biological Station, with special interest in those with biological information. We describe 24 new species (Aleiodes albidactyl sp. n., Aleiodes albigena sp. n., Aleiodes albiviria sp. n., Aleiodes bimaculatus sp. n., Aleiodes cacuangoi sp. n., Aleiodes colberti sp. n., Aleiodes delicatus sp. n., Aleiodes dyeri sp. n., Aleiodes elleni sp. n., Aleiodes falloni sp. n., Aleiodes frosti sp. n., Aleiodes kingmani sp. n., Aleiodes longikeros sp. n., Aleiodes luteosicarius sp. n., Aleiodes marilynae sp. n., Aleiodes mirandae sp. n., Aleiodes napo sp. n., Aleiodes nubicola sp. n., Aleiodes onyx sp. n., Aleiodes shakirae sp. n., Aleiodes stewarti sp. n., Aleiodes townsendi sp. n., Aleiodes tzantza sp. n., and Aleiodes yanayacu sp. n.) from Napo Province in Ecuador, 16 of which were reared from host caterpillars. With these results 89 species of Neotropical Aleiodes are now known, with 41 of them having host records. The most commonly reared species were in the circumscriptus/gastritor species-group, and mostly associated with Geometridae hosts (six of ten species). Three species of seriatus species-group, in contrast, were each reared from a different family. One of these species (i.e. A. frosti sp. n.), reared from Notodontidae, cuts a posterior radial opening in the mummy for emergence, a unique behavior in Aleiodes, recorded here for the first time. A. luteosicarius sp. n. is the first described species from Ecuador in the pallidator species-group. Differing from previously described pallidator species, which attack only Lymantriinae larvae, A. luteosicarius sp. n. attacks several species of Arctiinae larvae, being both subfamilies within Erebidae with densely setose caterpillars. We also describe new

  11. Abundance and frugivory of the Toco toucan (Ramphastos toco) in a gallery forest in Brazil's southern Pantanal.

    PubMed

    Ragusa-Netto, J

    2006-02-01

    Unlike other toucan species, the Toco toucan (Ramphastos toco)--the largest Ramphastidae--usually inhabits dry semi-open areas. This conspicuous canopy frugivore uses a large home range that includes a variety of vegetation types, among which gallery forests are widely cited as important to this species. However, the factors relating to the occurrence of Toco toucans in such habitats are unclear. I studied the abundance of Toco toucans as well as the availability of fleshy fruit in a gallery forest in the southern Pantanal (sub-region of Miranda, Brazil), in order to assess the relationship between these parameters. Also, I examined toucan foraging activity to analyze its relationship with both toucan abundance and fruit availability. The presence of the Toco toucan was more common in the gallery forest from the middle to the end of the dry season and during the middle of the wet season. Toucans foraged for fleshy fruits, mainly Genipa americana, Ficus luschnatiana, and Cecropia pachystachya fruits, feeding mostly on G. americana (by far the favorite food resource) and F. luschnatiana fruits during the dry season, while C. pachystachya fruits were important in the wet season. Toco toucans foraged particularly heavily (> 80% of foraging activity) on G. americana fruits during the latter part of the dry season, when fleshy fruit availability declined sharply. Toco toucan abundance in the gallery forest was associated with the availability of the most commonly consumed fleshy fruits, and also with its foraging activity. This finding suggests that the Toco toucan moved to the gallery forest periodically in response to the availability of abundant food resources, especially the G. americana fruits widely available and exploited during the severely dry season. Therefore, these fruits potentially contribute to Toco toucan persistence in the South Pantanal during the harshest period of the year.

  12. Experiments and simulations on the incompressible, Rayleigh-Taylor instability with small wavelength initial perturbations

    NASA Astrophysics Data System (ADS)

    Roberts, Michael Scott

    The Rayleigh-Taylor instability is a buoyancy driven instability that takes place in a stratified fluid system with a constant acceleration directed from the heavy fluid into the light fluid. In this study, both experimental data and numerical simulations are presented. Experiments are performed primarily using a lithium-tungstate aqueous solution as the heavy liquid, but sometimes a calcium nitrate aqueous solution is used for comparison purposes. Experimental data is obtained for both miscible and immiscible fluid combinations. For the miscible experiments the light liquid is either ethanol or isopropanol, and for the immiscible experiments either silicone oil or trans-anethole is used. The resulting Atwood number is either 0.5 when the lithium-tungstate solution is used or 0.2 when the calcium nitrate solution is used. These fluid combinations are either forced or left unforced. The forced experiments have an initial perturbation imposed by vertically oscillating the liquid containing tank to produce Faraday waves at the interface. The unforced experiments rely on random interfacial fluctuations, due to background noise, to seed the instability. The liquid combination is partially enclosed in a test section that is accelerated downward along a vertical rail system causing the Rayleigh-Taylor instability. Accelerations of approximately 1g (with a weight and pulley system) or 10g (with a linear induction motor system) are experienced by the liquids. The tank is backlit and digitally recorded with high speed video cameras. These experiments are then simulated with the incompressible, Navier-Stokes code Miranda. The main focus of this study is the growth parameter (α) of the mixing region produced by the instability after it has become apparently self-similar and turbulent. The measured growth parameters are compared to determine the effects of miscibility and initial perturbations (of the small wavelength, finite bandwidth type used here). It is found that while

  13. VIPER project

    NASA Technical Reports Server (NTRS)

    Kershaw, John

    1990-01-01

    The VIPER project has so far produced a formal specification of a 32 bit RISC microprocessor, an implementation of that chip in radiation-hard SOS technology, a partial proof of correctness of the implementation which is still being extended, and a large body of supporting software. The time has now come to consider what has been achieved and what directions should be pursued in the future. The most obvious lesson from the VIPER project was the time and effort needed to use formal methods properly. Most of the problems arose in the interfaces between different formalisms, e.g., between the (informal) English description and the HOL spec, between the block-level spec in HOL and the equivalent in ELLA needed by the low-level CAD tools. These interfaces need to be made rigorous or (better) eliminated. VIPER 1A (the latest chip) is designed to operate in pairs, to give protection against breakdowns in service as well as design faults. We have come to regard redundancy and formal design methods as complementary, the one to guard against normal component failures and the other to provide insurance against the risk of the common-cause failures which bedevil reliability predictions. Any future VIPER chips will certainly need improved performance to keep up with increasingly demanding applications. We have a prototype design (not yet specified formally) which includes 32 and 64 bit multiply, instruction pre-fetch, more efficient interface timing, and a new instruction to allow a quick response to peripheral requests. Work is under way to specify this device in MIRANDA, and then to refine the spec into a block-level design by top-down transformations. When the refinement is complete, a relatively simple proof checker should be able to demonstrate its correctness. This paper is presented in viewgraph form.

  14. The exploration metaphor

    NASA Technical Reports Server (NTRS)

    Mcgreevy, Michael W.

    1991-01-01

    NASA's experience in planetary exploration has demonstrated that the desktop workstation is inadequate for many visualization situations. The primary mission displays for the unmanned Surveyor missions to the moon during the mid-1960's, for example, were environmental images assembled on the inside surfaces of spherical shells. Future exploration missions will greatly benefit from advances in digital computer and display technology, but there remain unmet user interface needs. Alternative user interfaces and metaphors are needed for planetary exploration and other interactions with complex spatial environments. These interfaces and metaphors would enable the user to directly explore environments and naturally manipulate objects in those environments. Personal simulators, virtual workstations, and telepresence user interfaces are systems capable of providing this integration of user space and task space. The Exploration Metaphor is a useful concept for guiding the design of user interfaces for virtual environments and telepresence. To apply the Exploration Metaphor is to assert that computing is like exploration, and to support objects, operations, and contexts comparable to those encountered in the exploration of natural environments. The Exploration Metaphor, under development for user interfaces in support of NASA's planetary exploration missions and goals, will also benefit other applications where complex spatial information must be visualized. Visualization methods and systems for planetary exploration are becoming increasingly integrated and interactive as computing technology improves. These advances will benefit from virtual environment and telepresence interface technology. A key development has been the processing of multiple images and other sensor data to create detailed digital models of the planets and moons. Data from images of the Earth, Mars, and Miranda, for example, have been converted into 3D models, and dynamic virtual fly-overs have been

  15. Genetic Structure of Lutzomyia longipalpis Populations in Mato Grosso Do Sul, Brazil, Based on Microsatellite Markers

    PubMed Central

    Santos, Mirella F. C.; Ribolla, Paulo E. M.; Alonso, Diego P.; Andrade-Filho, José D.; Casaril, Aline E.; Ferreira, Alda M. T.; Fernandes, Carlos E. S.; Brazil, Reginaldo P.; Oliveira, Alessandra G.

    2013-01-01

    Background Lutzomyialongipalpis (Diptera: Psychodidae) is the major vector of Leishmania (Leishmania) infantum and thus plays a crucial role in the epidemiology of American visceral leishmaniasis (AVL). This vector is the best studied species of sand fly in the Neotropical region. Many studies claim that this vector is in fact a species complex; however there is still no consensus regarding the number of species that belong into this complex or the geographical distribution of sibling species. The aim of the present study was to analyze the genetic relationships within Lu. longipalpis populations in the state of Mato Grosso do Sul (MS), Brazil. Methodology/Principal Findings We collected 30 Lu. longipalpis (15 females and 15 males) from five localities (Campo Grande, Três Lagoas, Aquidauana, Miranda and Bonito) and 30 Lu. Cruzi from Corumbá, totaling 180 sandflies from MS, and 30 Lu. longipalpis from Estrela de Alagoas, state of Alagoas (AL), Northeast Brazil. We show that eight previously described microsatellite loci were sufficient in distinguishing Lu. longipalpis from Lu. Cruzi, which is a closely related species, and in differentiating between Lu. longipalpis collected in MS versus Estrela de Alagoas. Analyses of the genotypes revealed introgression between sympatric Lu. longipalpis and Lu. Cruzi. Conclusions/Significance Our findings support the hypothesis of cryptic species within the Lu. longipalpis complex. Furthermore, our data revealed introgression between Lu. longipalpis and Lu. cruzi. This phenomenon should be further investigated to determine the level and incidence of hybridization between these two species. We also demonstrated that microsatellite markers are a powerful tool for differentiating sand fly populations and species. The present study has elucidated the population structure of Lu. longipalpis in MS and, by extension, the Neotropical Lu. longipalpis complex itself. PMID:24066129

  16. Explanation, argumentation and dialogic interactions in science classrooms

    NASA Astrophysics Data System (ADS)

    Aguiar, Orlando G.

    2016-04-01

    As a responsive article to Miranda Rocksén's paper "The many roles of `explanation' in science education: a case study", this paper aims to emphasize the importance of the two central themes of her paper: dialogic approaches in science education and the role of explanations in science classrooms. I start discussing the concepts of dialogue and dialogism in science classrooms contexts. Dialogism is discussed as the basic tenet from which Rocksén developed her research design and methods. In turn, dialogues in science classrooms may be considered as a particular type of discourse that allows the students' culture, mostly based on everyday knowledge, and the science school culture, related to scientific knowledge and language to be interwoven. I argue that in school, science teachers are always committed to the resolution of differences according to a scientific position for the knowledge to be constructed. Thus, the institution of schooling constrains the ways in which dialogue can be conducted in the classrooms, as the scientific perspective will be always, beforehand, the reference for the conclusions to be reached. The second theme developed here, in dialogue with Rocksén, is about explanations in science classrooms. Based on Jean Paul Bronckart (Atividade de linguagem, textos e discursos: por um interacionismo sócio-discursivo, Educ, São Paulo, 1999), the differences and relationship between explanation and argumentation as communicative acts are re-discussed as well its practical consequences to science teaching. Finally, some epistemological questions are raised about the status of scientific explanations in relation to non-scientific ones.

  17. The magnetosphere of uranus: hot plasma and radiation environment.

    PubMed

    Krimigis, S M; Armstrong, T P; Axford, W I; Cheng, A F; Gloeckler, G; Hamilton, D C; Keath, E P; Lanzerotti, L J; Mauk, B H

    1986-07-01

    The low-energy charged-particle (LECP) instrument on Voyager 2 measured lowenergy electrons and ions near and within the magnetosphere of Uranus. Initial analysis of the LECP measurements has revealed the following. (i) The magnetospheric particle population consists principally of protons and electrons having energies to at least 4 and 1.2 megaelectron volts, respectively, with electron intensities substantially excceding proton intensities at a given energy. (ii) The intensity profile for both particle species shows evidence that the particles were swept by planetry satellites out to at least the orbit of Titania. (iii) The ion and electron spectra may be described by a Maxwellian core at low energies (less than about 200 kiloelectron volts) and a power law at high energies (greater than about 590 kiloelectron volts; exponentmicro, 3 to 10) except inside the orbit of Miranda, where power-law spectra (micro approximately 1.1 and 3.1 for electrons and protons, respectively) are observed. (iv) At ion energies between 0.6 and 1 megaelectron volt per nucleon, the composition is dominated by protons with a minor fraction (about 10(-3)) of molecular hydrogen; the lower limit for the ratio of hydrogen to helium is greater than 10(4). (v) The proton population is sufficiently intense that fluences greater than 10(16) per square centimeter can accumulate in 10(4) to 10(') years; such fluences are sufficient to polymerize carbon monoxide and methane ice surfaces. The overall morphology of Uranus' magnetosphere resembles that of Jupiter, as evidenced by the fact that the spacecraft crossed the plasma sheet through the dawn magnetosheath twice per planetary rotation period (17.3 hours). Uranus' magnetosphere differs from that of Jupiter and of Saturn in that the plasma 1 is at most 0.1 rather than 1. Therefore, little distortion ofthe field is expected from particle loading at distances less than about 15 Uranus radii.

  18. Ultraviolet radiation-induced tumor necrosis factor alpha, which is linked to the development of cutaneous SCC, modulates differential epidermal microRNAs expression

    PubMed Central

    Singh, Ashok; Willems, Estelle; Singh, Anupama; Hafeez, Bilal Bin; Ong, Irene M.; Mehta, Suresh L.; Verma, Ajit Kumar

    2016-01-01

    Chronic exposure to ultraviolet radiation (UVR) is linked to the development of cutaneous squamous cell carcinoma (SCC), a non-melanoma form of skin cancer that can metastasize. Tumor necrosis factor-alpha (TNFα), a pro-inflammatory cytokine, is linked to UVR-induced development of SCC. To find clues about the mechanisms by which TNFα may promote UVR-induced development of SCC, we investigated changes in the expression profiling of microRNAs (miRNA), a novel class of short noncoding RNAs, which affects translation and stability of mRNAs. In this experiment, TNFα knockout (TNFα KO) mice and their wild type (WT) littermates were exposed to acute UVR (2.0 kJ/m2) and the expression profiling of epidermal miRNA was determined 4hr post UVR exposure. TNFα deletion in untreated WT mice resulted in differential expression (log fold change>1) of seventeen miRNA. UVR exposure in WT mice induced differential expression of 22 miRNA. However, UVR exposure in TNFα KO mice altered only two miRNAs. Four miRNA, were differentially expressed between WT+UVR and TNFα KO+UVR groups. Differentially expressed selected miRNAs were further validated using real time PCR. Few of the differentially expressed miRNAs (miR-31-5p, miR-196a-5p, miR-127-3p, miR-206-3p, miR-411-5p, miR-709, and miR-322-5p) were also observed in UVR-induced SCC. Finally, bio-informatics analysis using DIANA, MIRANDA, Target Scan, and miRDB algorithms revealed a link with major UVR-induced pathways (MAPK, PI3K-Akt, transcriptional mis-regulation, Wnt, and TGF-beta). PMID:26918454

  19. ViSUS: Visualization Streams for Ultimate Scalability

    SciTech Connect

    Pascucci, V

    2005-02-14

    In this project we developed a suite of progressive visualization algorithms and a data-streaming infrastructure that enable interactive exploration of scientific datasets of unprecedented size. The methodology aims to globally optimize the data flow in a pipeline of processing modules. Each module reads a multi-resolution representation of the input while producing a multi-resolution representation of the output. The use of multi-resolution representations provides the necessary flexibility to trade speed for accuracy in the visualization process. Maximum coherency and minimum delay in the data-flow is achieved by extensive use of progressive algorithms that continuously map local geometric updates of the input stream into immediate updates of the output stream. We implemented a prototype software infrastructure that demonstrated the flexibility and scalability of this approach by allowing large data visualization on single desktop computers, on PC clusters, and on heterogeneous computing resources distributed over a wide area network. When processing terabytes of scientific data, we have achieved an effective increase in visualization performance of several orders of magnitude in two major settings: (i) interactive visualization on desktop workstations of large datasets that cannot be stored locally; (ii) real-time monitoring of a large scientific simulation with negligible impact on the computing resources available. The ViSUS streaming infrastructure enabled the real-time execution and visualization of the two LLNL simulation codes (Miranda and Raptor) run at Supercomputing 2004 on Blue Gene/L at its presentation as the fastest supercomputer in the world. In addition to SC04, we have run live demonstrations at the IEEE VIS conference and at invited talks at the DOE MICS office, DOE computer graphics forum, UC Riverside, and the University of Maryland. In all cases we have shown the capability to stream and visualize interactively data stored remotely at the San

  20. The Behavior of Regular Satellites during the Nice Model's Planetary Close Encounters

    NASA Astrophysics Data System (ADS)

    Nogueira, E. C.; Gomes, R. S.; Brasser, R.

    2014-10-01

    In order to explain the behavior of the regular satellites of the ice planets during the instability phase of the Nice model, we used numerical simulations to investigate the evolution of the satellite systems when these two planets experienced encounters with the gas giants. For the initial conditions we placed an ice planet in between Jupiter and Saturn, according to the evolution of Nice model simulations in a jumping Jupiter scenario (Brasser et al. 2009). We used the MERCURY integrator (Chambers 1999) and we obtained 101 successful runs which kept all planets, of which 24 were jumping Jupiter cases. Subsequently we performed additional numerical integrations in which the ice giant that encountered a gas giant was started on the same orbit but with its regular satellites included. This is done as follows: For each of the 101 basic runs, we save the orbital elements of all objects in the integration at all close encounter events. Then we performed a backward integration to start the system 100 years before the encounter and re-enacted the forward integration with the regular satellites around the ice giant. The final orbital elements of the satellites with respect to the ice planet were used to restart the integration for the next planetary encounter. If we assume that Uranus is the ice planet that had encounters with a gas giant, we considered the satellites Miranda, Ariel, Umbriel, Titania and Oberon with their present orbits. For Neptune we introduced Triton with an orbit with a 15% larger than the actual semi-major axis to account for the tidal decay from the LHB to present time. We also assume that Triton was captured through binary disruption (Agnor and Hamilton 2006, Nogueira et al. 2011) and its orbit was circularized by tides during the 500 million years before the LHB.

  1. Computational prediction of candidate miRNAs and their potential functions in biomineralization in pearl oyster Pinctada martensii.

    PubMed

    Zheng, Zhe; Jiao, Yu; Du, Xiaodong; Tian, Qunli; Wang, Qingheng; Huang, Ronglian; Deng, Yuewen

    2016-05-01

    MicroRNAs (miRNAs) are a class of non-coding RNA molecules with presumed post-transcriptional regulatory activity in various biological processes, such as development and biomineralization. Pinctada martensii is one of the main species cultured for marine pearl production in China and Japan. In our previous research, 258 pm-miRNAs had been identified by solexa deep sequencing in P. martensii, while it is far from the number of miRNAs found in other species. In this study, based on the transcriptome database of pearl sac, we identified 30 candidate pm-miRNAs by computational prediction. Among the obtained 30 pm-miRNAs, 13 pm-miRNAs were generated from the complementary strand of protein-coding mRNAs, and 17 pm-miRNAs could not be annotated using blastx and tblastn analysis. Notably, 10 of the 30 pm-miRNAs, such as pm-miR-1b, pm-miR-205b and pm-miR-375b, were homologous with the reported pm-miRNAs, respectively. To validate the existence of the identified pm-miRNAs, eight randomly selected pm-miRNAs were tested by stem loop quantitative RT-PCR analyses using 5.8S as the internal reference gene. Target prediction between the obtained pm-miRNAs and biomineralization-related genes by microTar, miRanda and RNA22 indicated pm-miR-2386 and pm-miR-13b may be the key factors in the regulation network by regulating the formation of organic matrix or the differentiation of mineralogenic cell during shell formation. Thus, this study enriched miRNA databases of pearl oyster and provided a new way to understand biomineralization. PMID:27081363

  2. Structure and Electronic Properties of Ionized PAH Clusters

    NASA Astrophysics Data System (ADS)

    Joblin, Christine; Kokkin, Damian L.; Sabbah, Hassan; Bonnamy, Anthony; Dontot, Leo; Rapacioli, Mathias; Simon, Aude; Spiegelman, Fernand; Parneix, Pascal; Pino, Thomas; Pirali, Olivier; Falvo, Cyril; Gamboa, Antonio; Brechignac, Philippe; Garcia, Gustavo A.; Nahon, Laurent

    2014-06-01

    Polycyclic aromatic hydrocarbon (PAH) clusters have been proposed as candidates for evaporating very small grains that are revealed by their mid-IR emission at the surface of UV-irradiated clouds in interstellar space. This suggestion is a motivation for further characterization of the properties of these clusters in particular when they are ionized. We have used a molecular beam coupled to the photoelectron-photoion coincidence spectrometer DELICIOUS II/ III at the VUV beamline DESIRS of the synchrotron SOLEIL to characterize the electronic properties of cationic coronene (C24H12) and pyrene (C16H10) clusters up to the pentamer and heptamer, respectively. These experimental results are analysed in the light of electronic structure calculations. Simulations of the properties of ionized PAH clusters are faced with the difficulty of describing charge delocalization in these large systems. We will show that recent developments combining a Density Functional Tight Binding method with Configuration Interaction scheme is successful in simulating the ionization potential, which gives strong confidence into the predicted structures for these PAH clusters. We will also present current effort to study charge transfer states by performing complementary measurements with the PIRENEA ion trap set-up. Joint ANR project GASPARIM, ANR-10-BLAN-501 M. Rapacioli, C. Joblin and P. Boissel Astron. & Astrophys., 429 (2005), 193-204. G. Garcia, H. Soldi-Lose and L. Nahon Rev. Sci. Instrum., 80 (2009), 023102; G. Garcia, B. Cunha de Miranda, M. Tia, S. Daly, L. Nahon, Rev. Sci. Instrum., 84 (2013), 053112 M. Rapacioli, A. Simon, L. Dontot and F. Spiegelman Phys. Status Solidi B, 249 (2) (2012), 245-258; L. Dontot, M. Rapacioli and F. Spiegelman (2014) submitted

  3. The first astronomical hypothesis based on cinematographical observations: Costa Lobo's 1912 evidence for polar flattening of the moon

    NASA Astrophysics Data System (ADS)

    Bonifácio, Vitor; Malaquias, Isabel; Fernandes, João

    2010-07-01

    Acceptance by the scientific community of results obtained with new technology can be a complex process. A particularly good example is provided by the unexpected hypothesis raised by Francisco Miranda da Costa Lobo upon examination of the cinematographic film obtained during the solar eclipse of 17 April 1912. Contrary to contemporary practice this eclipse was eagerly awaited in view of its astrometrical rather than astrophysical scientific interest. The observation of this hybrid eclipse provided, in theory, a good opportunity to improve several astrometric parameters, and in particular the Moon's apparent diameter. Observations were performed from Portugal to Russia and, for the first time, movie cameras were widely deployed to register astronomical phenomena. Upon analysing the film obtained at Ovar (Portugal), Costa Lobo realised that during totality Baily's Beads were not symmetrically distributed around the Moon. As an explanation and opposing current belief he proposed a lunar flattening in the range 1/1156 to 1/380. Initially other eclipse observers supported Costa Lobo's claim. In particular, Father Willaert obtained a flattening value of 1/2050 from his cinematographic film taken at Namur (Belgium). However, these results were quickly disregarded by the international astronomical community which favoured an explanation based upon the irregularities of the lunar profile. In this paper we recall the characteristics of the 17 April 1912 eclipse and the cinematographic observations, and review the results obtained. We conclude that the lack of attention paid by the astronomical community to the new cinematographical results and Camille Flammarion's superficial analysis of the data were instrumental in the rejection of Costa Lobo's hypothesis.

  4. Rapid toxicity assessment of sediments from estuarine ecosystems: A new tandem in vitro testing approach

    USGS Publications Warehouse

    Johnson, B.T.; Long, E.R.

    1998-01-01

    Microtox?? and Mutatox?? were used to evaluate the acute toxicity and genotoxicity, respectively, of organic sediment extracts from Pensacola Bay and St. Andrew Bay, two estuaries that cover about 273 and 127 km2, respectively, along the Gulf coast of Florida, USA. The sensitivity and selectivity of these two bioluminescent toxicity assays were demonstrated in validation studies with over 50 pesticides, genotoxins, and industrial pollutants, both as single compounds and in complex mixtures. The 50% effective concentration (EC50) values of insecticides, petroleum products, and polychlorinated biphenyls determined by Microtox all tended to group around the mean EC50 value of 1.2 (0.8) mg/L. The polycyclic aromatic hydrocarbon sensitivity of Mutatox was in general similar to that reported in the Ames test. Surficial sediment samples were collected, extracted with dichloromethane, evaporated and concentrated under nitrogen, dissolved in dimethyl sulfoxide, assayed for acute toxicity and genotoxicity, and compared with reference sediments. Samples with low EC50 values, and determined to be genotoxic, were detected in Massalina Bayou, Watson Bayou, East Bay, and St. Andrew Bay-East in St. Andrew Bay as well as Bayou Grande, Bayou Chico, and Bayou Texar in Pensacola Bay. An overview of these data sets analyzed by Spearman rank correlation showed a significant correlation between acute toxicity and genotoxicity (p < 0.05). Microtox and Mutatox in tandem was a sensitive, cost-effective, and rapid (<24 h) screening tool that identified troublesome areas of pollution and assessed the potential sediment toxicity of lipophilic contaminants in aquatic ecosystems.

  5. Prevalence of obesity among secondary school students from 2009 to 2014 in China: a meta-analysis.

    PubMed

    Dai, Ning; Tian, Li; Tao, Tao; Li, Tongda; Tang, Tianmiao; Sheng, Ying; Lu, XiaoQian; Tang, Xue; Peng, Baozhen; Lu, Wei; Jin, Yuelong; He, Lianping; Yao, Yingshui

    2014-12-17

    Antecedentes: En los últimos años, la obesidad es un importante problema de salud pública en muchos países. Se calcula que el 8% de los niños son obesos.Sin embargo, poco se sabe acerca de la prevalencia de la obesidad entre los alumnos de secundaria en China, el objetivo de este estudio fue evaluar la prevalencia de la obesidad en general chino, estudiante de la escuela secundaria. Métodos: Publicaciones de 2009 a 2014 en la prevalencia de obesidad entre los estudiantes de la escuela secundaria en China fueron recuperados de PubMed, Online Chinese periódico de bases de datos de texto completo de VIP, CNKI y Wan Fang.Analista del meta fue utilizado analizar el total de las tasas de obesidad para chinos de la escuela secundaria. Resultados: Después de la evaluación de la calidad de los artículos, 33 papeles fueron finalmente incluidos en nuestro estudio, y el total de los tamaños de muestra sobre la obesidad investigación fueron 218317 (107631 macho y 110686 hembra), en la que 27455 (14863 macho y 12590 mujeres) fueron la obesidad.Los resultados mostraron que el analista del meta la prevalencia de la obesidad en estudiantes de secundaria son 8,4% (IC del 95%: 6,2% - 11,3%) y 4,8% (IC del 95%: 3,2% - 7,2%) para chico y chica, respectivamente. Conclusión: Nuestros resultados sugieren que la escuela y Gobierno related Departamento debería prestar más atención a la obesidad entre los estudiantes de la escuela secundaria en China, y tomar algunas medidas adecuadamente a la curva de la tendencia de crecimiento de la obesidad.

  6. Towards an annually-resolved record of Lateglacial Patagonian ice sheet dynamics using glaciolacustrine varves

    NASA Astrophysics Data System (ADS)

    Bendle, Jacob; Palmer, Adrain; Thorndycraft, Varyl

    2016-04-01

    Proglacial sedimentary archives, in particular, glaciolacustrine varve sequences, offer the potential for detailed reconstructions of past ice sheet dynamics. Specifically, glaciolacustrine varves (i) allow reconstructions of sediment (and thus meltwater) influx at annual and even sub-annual resolution; and (ii) provide a continuous, annually-resolved chronology to estimate rates of change and/or the duration of significant events in the deglaciation of a basin. In South America, glacial geologists have relied heavily on cosmogenic nuclide exposure dating to construct chronologies for palaeoglaciological activity. Whilst effective, the typical uncertainties associated with boulder dating methods (±10%) preclude the investigation of short-term (e.g. ≤ centennial-scale) glacier and/or climatic change(s), which are shown to be important at modern ice-margins. Moreover, moraine chronologies are fragmentary, and inherently biased towards episodes of positive glacier mass balance (i.e. moraine construction), and thus limit our understanding of ice sheet retreat dynamics. By contrast, long, continuous, high-resolution (i.e. varve) palaeolimnological records have the potential to significantly refine models of ice sheet deglaciation. In this talk, we present data from Valle Fenix Chico, in the Lago Buenos Aires (LBA) basin (-46.57°S -71.07°W), in which ice-contact Glacial Lake Buenos Aires formed as the LBA ice lobe of Patagonian ice sheet withdrew from its innermost LGM moraine (~17.2 ± 0.9 ka). Thick (>40m) sequences of laminated glaciolacustrine sediment were deposited in the palaeolake, and are now exposed in a sub-aerial canyon that was cut when the lake drained. We report on the detailed macro- and micro-facies of the LBA sediments. In particular, we: (1) develop a process model for the formation of silt and clay couplets, which suggests an annual (varve) origin; (2) present varve series for the initial phase (~1kyr) of LBA ice lobe deglaciation.

  7. STRAIGHT-A STUDENTS DISLIKE PHYSICAL EDUCATION IN ADOLESCENCE: MYTH OR TRUTH? THE AVENA, AFINOS AND UP&DOWN STUDIES.

    PubMed

    Cañadas, Laura; Esteban-Cornejo, Irene; Ortega, Francisco B; Gomez-Martinez, Sonia; Casajús, José Antonio; Cabero, María Jesús; Calle, Maria E; Marcos, Ascensión; Veiga, Oscar L; Martinez-Gomez, David

    2015-07-01

    Objetivo: conocer si a aquellos adolescentes que no les gusta la educación física obtienen mejores resultados en rendimiento académico y cognitivo que sus compañeros. Métodos: los participantes incluyen 4.226 adolescentes de los estudios AVENA, AFINOS y UP&DOWN. El gusto por la educación física se valoró con una escala Likert de 7 puntos. El rendimiento cognitivo se valoró en el estudio AVENA usando la versión española del SRA Test of Educational Ability. El rendimiento académico se valoró en los estudios AFINOS y UP&DOWN con las notas de Matemáticas, Lengua y la media de Lengua y Matemáticas. Resultados: en el estudio AVENA encontramos diferencias en la habilidad verbal entre las chicas a las que no les gustaba la educación física y sus compañeros (P = 0,033). En el estudio AFINOS los chicos a los que no les gustaba la educación física tenían mejores notas en Lengua que sus compañeros (P = 0,024). En el estudio UP&DOWN las chicas a las que no les gustaba la educación física obtuvieron mejores resultados en Lengua y en la media de Lengua y Matemáticas (P < 0,001).

  8. Hydrocarbon transport and shearing processes in the Antelope Shale, Monterey Formation, San Joaquin Valley, California

    SciTech Connect

    Dholakia, S.K.; Aydin, A.; Pollard, D.D. )

    1996-01-01

    An essential component of the development and management of a fractured reservoir is the basic understanding of the fracture system and its effect on hydrocarbon flow. In the Antelope Shale, a siliceous shale member of the Monterey Formation in the Buena Vista Hills field (BVH), San Joaquin Valley (SJV), the relationship between the fracture system and hydrocarbon productivity is poorly understood. An integrative approach, employing both geological and geophysical methods, to fracture characterization in the Antelope Shale is important for a better understanding of the connected fracture network and for identifying hydrocarbon-carrying fractures. This knowledge will aid in future reservoir management plans for the BVH field, specifically CO[sub 2] enhanced oil recovery from the existing reservoir. Field studies of the Antelope Shale at Chico Martinez Creek in the SJV demonstrate the importance of shearing processes for the migration of hydrocarbons. Hydrocarbons primarily occur in brecciated zones which are oriented parallel to bedding. The internal architecture of early stage breccia zones is well-organized with sets of hydrocarbon-stained fractures oriented both at high angles and parallel to bedding. In later stage breccia zones, internal organization is disrupted and consists of fragments of the host rock surrounded by hydrocarbons. Subsurface studies which include core and FMS data demonstrate comparable shear-related features in the Monterey Formation. Oil-stained breccia zones are observed in core from the Antelope Shale from a field near BVH. Breccia zones are documented in FMS data from offshore Monterey fields and similar features are being sought in FMS data from SJV in Antelope Shale.

  9. Hydrocarbon transport and shearing processes in the Antelope Shale, Monterey Formation, San Joaquin Valley, California

    SciTech Connect

    Dholakia, S.K.; Aydin, A.; Pollard, D.D.

    1996-12-31

    An essential component of the development and management of a fractured reservoir is the basic understanding of the fracture system and its effect on hydrocarbon flow. In the Antelope Shale, a siliceous shale member of the Monterey Formation in the Buena Vista Hills field (BVH), San Joaquin Valley (SJV), the relationship between the fracture system and hydrocarbon productivity is poorly understood. An integrative approach, employing both geological and geophysical methods, to fracture characterization in the Antelope Shale is important for a better understanding of the connected fracture network and for identifying hydrocarbon-carrying fractures. This knowledge will aid in future reservoir management plans for the BVH field, specifically CO{sub 2} enhanced oil recovery from the existing reservoir. Field studies of the Antelope Shale at Chico Martinez Creek in the SJV demonstrate the importance of shearing processes for the migration of hydrocarbons. Hydrocarbons primarily occur in brecciated zones which are oriented parallel to bedding. The internal architecture of early stage breccia zones is well-organized with sets of hydrocarbon-stained fractures oriented both at high angles and parallel to bedding. In later stage breccia zones, internal organization is disrupted and consists of fragments of the host rock surrounded by hydrocarbons. Subsurface studies which include core and FMS data demonstrate comparable shear-related features in the Monterey Formation. Oil-stained breccia zones are observed in core from the Antelope Shale from a field near BVH. Breccia zones are documented in FMS data from offshore Monterey fields and similar features are being sought in FMS data from SJV in Antelope Shale.

  10. The Formation and Chronology of the PAT 91501 Impact-Melt L-Chondrite with Vesicle-Metal-Sulfide Assemblages

    NASA Technical Reports Server (NTRS)

    Benedix, G. K.; Ketcham, R. A.; Wilson, L.; McCoy, T. J.; Bogard, D. D.; Garrison, D. H.; Herzog, G. F.; Xue, S.; Klein, J.; Middleton, R.

    2007-01-01

    The L chondrite Patuxent Range (PAT) 41 91501 is an 8.5-kg unshocked, homogeneous, igneous-textured impact melt that cooled slowly compared to other meteoritic impact melts in a crater floor melt sheet or sub-crater dike. We conducted mineralogical and tomographic studies of previously unstudied mm- to cm-sized metal-sulfide-vesicle assemblages and chronologic studies of the silicate host. Metal-sulfide clasts constitute about 1 vol.%, comprise zoned taenite, troilite and pentlandite, and exhibit a consistent orientation between metal and sulfide and of metal-sulfide contacts. Vesicles make up approximately 2 vol.% and exhibit a similar orientation of long axes. Ar-39-Ar-40 measurements date the time of impact at 4.461 +/- 0.008 Gyr B.P. Cosmogenic noble gases and Be-10 and Al-2l activities suggest a pre-atmospheric radius of 40-60 cm and a cosmic ray exposure age of 25-29 Myr, similar to ages of a cluster of L chondrites. PAT 91501 dates the oldest known impact on the L chondrite parent body. The dominant vesicle-forming gas was S2 (approximately 15-20 ppm), which formed in equilibrium with impact-melted sulfides. The meteorite formed in an impact melt dike beneath a crater, as did other impact melted L chondrites, such as Chico. Cooling and solidification occurred over approximately 2 hours. During this time, approximately 90% of metal and sulfide segregated from the local melt. Remaining metal and sulfide grains oriented themselves in the local gravitational field, a feature nearly unique among meteorites. Many of these metal sulfide grains adhered to vesicles to form aggregates that may have been close to neutrally buoyant. These aggregates would have been carried upward with the residual melt, inhibiting further buoyancy-driven segregation. Although similar processes operated individually in other chondritic impact melts, their interaction produced the unique assemblage observed in PAT 91501.

  11. Seasonal differences in needle gas exchange between mature branches and seedlings of Pinus ponderosa

    SciTech Connect

    Houpis, J.L.J.; Anderson, P.D. )

    1991-05-01

    In 1990, an interactive study was initiated to understand the differing physiological and morphological response of mature tissue and seedling tissue to stress. The study was conducted at the Air Pollution and Climate Change Exposure Facility in a Pinus ponderosa seed production orchard at the US Forest Service Tree Improvement Center in Chico, CA. The orchard consists of clonal trees and the authors have planted half-sibling seedlings which correspond to the mature clones which were measured. Both the mature trees and seedlings were regularly irrigated and fertilized. The result is that they have minimized the genetic and environmental differences that might otherwise influence the physiological differences between mature and seedling tissue. One of the physiological parameters which was measured was seasonal and diurnal gas exchange using a LICOR 6200. They measured gas exchange in November 1989, March, July, and October 1990. They found that throughout the year, all gas exchange components (eg. photosynthesis, transpiration, stomatal conductance) were significantly greater for seedling tissue. Photosynthetic differences were greater during early October, with diurnal mean rates of 1.1 {mu}mol m{sup {minus}2}s{sup {minus}1} and 0.5 {mu}mol m{sup {minus}2}s{sup {minus}1} for seedling and mature tissue, respectively. Transpiration differences were greater during early October, with diurnal mean rates of 2.2 mmol m{sup {minus}2}2{sup {minus}1} and 1.2 mmol m{sup {minus}2}s{sup {minus}1} for seedling and mature tissue, respectively. Finally, gas exchange differences between seedling and mature tissue were greater for current needles than one-year old needles. The results of this study demonstrate that gas exchange differences between seedling and mature tissue observed in the field may be the result of inherent physiological differences, and not merely genetic and environmental differences.

  12. Petrologic evidence for collisional heating of chondritic asteroids

    NASA Technical Reports Server (NTRS)

    Rubin, Alan E.

    1995-01-01

    The identification of the mechanism(s) responsible for heating asteroids is among the major problems in planetary science. Because of difficulties with models of electromagnetic induction and the decay of short-lived radionuclides, it is worthwhile to evaluate the evidence for collisional heating. New evidence for localized impact heating comes from the high proportion of relict type-6 material among impact-melt-bearing ordinary chondrites (OC). This relict material was probably metamorphosed by residual heat within large craters. Olivine aggregates composed of faceted crystals with 120 deg triple junctions occur within the melted regions of the Chico and Rose City OC melt rocks; the olivine aggregates formed from shocked, mosaicized olivine grains that underwent contact metamorphism. Large-scale collisional heating is supoorted by the correlation in OC between petrologic type and shock stage; no other heating mechanism can readily account for this correlation. The occurrence of impact-melt-rock clasts in OC that have been metamorphosed along with their whole rocks indicates that some impact events preceded or accompanied thermal metamorphism. Such impacts events, occurring during or shortly after accretion, are probably responsible for substantially melting approximately 0.5% of OC. These events must have heated a larger percentage of OC to subsolidus temperatures sufficient to have caused significant metamorphism. If collisional heating is viable, then OC parent asteroids must have been large; large OC asteroids in the main belt may include those of the S(IV) spectral subtype. Collisional heating is inconsistent with layered ('onion-shell') structures in OC asteroids (wherein the degree of metamorphism increases with depth), but the evidence for such structures is weak. It seems likely that collisional heating played an important role in metamorphosing chondritic asteroids.

  13. An investigation of the effects of simulated acid rain and elevated ozone on the physiology of ponderosa pine (Pinus ponderosa Dougl. ex Laws.) seedlings and mature trees

    SciTech Connect

    Momen, B.

    1993-12-31

    This study investigated the combined effects of simulated acid rain and ozone on foliar water relations, carbon and nitrogen contents, gas exchange, and respiration of ponderosa pine seedlings and mature trees grown in the field at the USDA Forest Service Tree Improvement Center in Chico, California. Acid rain levels (pH 5.1 and 3) were applied weekly on foliage only, from January to April, 1992. Plants were exposed to ozone levels (ambient and twice ambient) during the day only, from August to December, 1990, and from September to November, 1992. Results suggested that elevated ozone, particularly in combination with strong acid, caused osmotic adjustment that may benefit plants during drought. The observed effects of pollutants are similar to the reported effects of drought on plant water relations. Elevated ozone decreased foliar nitrogen content and thus increased the C:N ratio, particularly in seedlings. Stomatal conductance was not affected by pollutants but net photosynthesis was decreased by elevated ozone, especially in mature trees. The greater sensitivity of net photosynthesis of mature trees to elevated ozone was contrary to all other plant characteristics investigated. Elevated ozone increased seedling respiration. Under controlled, temperature, light, and vapor pressure deficit conditions, net photosynthesis responded positively to increases in plant age, light intensity, and rain pH, but negatively to increases in tissue age, heat, and ozone concentration. Overall results indicated that acid rain and elevated ozone declined the carbon pool of ponderosa pine due to increased respiration and decreased net photosynthesis. Pollutant effects were more profound in mid-summer when ozone concentrations were highest. On many occasions the effects of acid rain and ozone levels interacted. Seedlings were more sensitive to pollutants than mature trees.

  14. Comparison of aerosol backscatter and wind field estimates from the REAL and the SAMPLE

    NASA Astrophysics Data System (ADS)

    Mayor, Shane D.; Dérian, Pierre; Mauzey, Christopher F.; Spuler, Scott M.; Ponsardin, Patrick; Pruitt, Jeff; Ramsey, Darrell; Higdon, Noah S.

    2015-09-01

    Although operating at the same near-infrared 1.5- m wavelength, the Raman-shifted Eye-safe Aerosol Lidar (REAL) and the Scanning Aerosol Micro-Pulse Lidar-Eye-safe (SAMPLE) are very different in how they generate and detect laser radiation. We present results from an experiment where the REAL and the SAMPLE were operated side-by-side in Chico, California, in March of 2015. During the non-continuous, eleven day test period, the SAMPLE instrument was operated at maximum pulse repetition frequency (15 kHz) and integrated over the interpulse period of the REAL (0.1 s). Operation at the high pulse repetition frequency resulted in second trip echoes which contaminated portions of the data. The performance of the SAMPLE instrument varied with background brightness--as expected with a photon counting receiver|--yet showed equal or larger backscatter intensity signal to noise ratio throughout the intercomparison experiment. We show that a modest low-pass filter or smooth applied to the REAL raw waveforms (that have 5x higher range resolution) results in significant increases in raw signal-to-noise ratio and image signal-to-noise ratio--a measure of coherent aerosol feature content in the images resulting from the scans. Examples of wind fields and time series of wind estimates from both systems are presented. We conclude by reviewing the advantages and disadvantages of each system and sketch a plan for future research and development activities to optimize the design of future systems.

  15. Contribution of growth and cell cycle checkpoints to radiation survival in Drosophila.

    PubMed

    Jaklevic, Burnley; Uyetake, Lyle; Lemstra, Willy; Chang, Julia; Leary, William; Edwards, Anthony; Vidwans, Smruti; Sibon, Ody; Tin Su, Tin

    2006-12-01

    Cell cycle checkpoints contribute to survival after exposure to ionizing radiation (IR) by arresting the cell cycle and permitting repair. As such, yeast and mammalian cells lacking checkpoints are more sensitive to killing by IR. We reported previously that Drosophila larvae mutant for grp (encoding a homolog of Chk1) survive IR as well as wild type despite being deficient in cell cycle checkpoints. This discrepancy could be due to differences either among species or between unicellular and multicellular systems. Here, we provide evidence that Grapes is needed for survival of Drosophila S2 cells after exposure to similar doses of IR, suggesting that multicellular organisms may utilize checkpoint-independent mechanisms to survive irradiation. The dispensability of checkpoints in multicellular organisms could be due to replacement of damaged cells by regeneration through increased nutritional uptake and compensatory proliferation. In support of this idea, we find that inhibition of nutritional uptake (by starvation or onset of pupariation) or inhibition of growth factor signaling and downstream targets (by mutations in cdk4, chico, or dmyc) reduced the radiation survival of larvae. Further, some of these treatments are more detrimental for grp mutants, suggesting that the need for compensatory proliferation is greater for checkpoint mutants. The difference in survival of grp and wild-type larvae allowed us to screen for small molecules that act as genotype-specific radiation sensitizers in a multicellular context. A pilot screen of a small molecule library from the National Cancer Institute yielded known and approved radio-sensitizing anticancer drugs. Since radiation is a common treatment option for human cancers, we propose that Drosophila may be used as an in vivo screening tool for genotype-specific drugs that enhance the effect of radiation therapy. PMID:17028317

  16. Integrating Sustainability into the Curriculum: Crossing Disciplinary Boundaries

    NASA Astrophysics Data System (ADS)

    Pushnik, J.

    2012-12-01

    The next generation will confront an increased number of global issues that interface the complexities of socioeconomic perspectives, environmental stability, poverty and development. Recently California State University Chico undertook a general education reform, providing a unique opportunity to craft a general education pathway to prepare students for these challenges by focusing a curriculum on sustainability. The Sustainability Pathway emphasizes a system thinking approach to help students understand and be able to address a set of problems involving the biosphere processes, human institutions and the economic vitality. The curriculum intentionally integrates courses from across the disciplines of natural sciences, social sciences, agriculture, engineering, economics, arts and humanities into a central focused theme of sustainability. The diverse backgrounds and academic focus of the participating faculty has necessitate the development of a common language and a cohesion within the curriculum. To address these needs a faculty learning community (FLC) was established to build on a common set of case studies. Three regional environmental water related issues were selected that had demonstrable socioeconomic, equity/ethical dimensions and environmental consequences. These case studies are Klamath River basin in northern California, the Bay-Delta project in the central part of the state and the Sultan Sea in southern California. Members of the FLC has contributed a perspective from their academic discipline which includes proposed reading lists, web based resources and PowerPoint presentations which are housed in common web- based resource repository. The pedagogical rational is to create linkages and cohesion among the courses in the curriculum by iteratively examining these case studies as basis for development of a multidisciplinary perspective as students progress through their general education.

  17. Runoff Production in the Upper Rio Chagres Catchment, Panama

    NASA Astrophysics Data System (ADS)

    Niezialek, J. M.; Ogden, F. L.

    2003-12-01

    Runoff production in watersheds in the seasonal tropics is governed by a number of factors. The mountainous 414 sq. km upper Rio Chagres watershed offers a unique opportunity to better understand the runoff production mechanisms in seasonal tropical catchments through data analysis and modeling. The upper Rio Chagres catchment provides the majority of inflows to the Panama Canal, has been monitored for over 60 years as part of canal operations. Discharge data are available at both the catchment outlet (Chico gaging station) and an internal catchment location (Rio Piedras gaging station). There are also seven tipping bucket recording rain gages in and around the catchment. Analysis of runoff data reveals anomalously-high runoff production efficiencies early in the wet season. Furthermore, the existence of two quasi-stable base flow regimes during the wet season imply critical threshold storages. Initial field studies have shown that the soils are water repellent during the dry season. Runoff data from the 80 sq. km Rio Piedras subcatchment reveal ephemeral flows throughout the wet season, indicating significant heterogeneity in runoff production and deep groundwater circulation. Preliminary hydrologic modeling is performed with the Sacramento Soil Moisture Accounting Model (SAC-SMA), calibrated using data from 1988 and verified using data from 1989. Further modeling on the flood of 28-31 December, 2000 is also performed. Modeling using the distributed parameter GSSHA model combined with the Sacramento groundwater module allows simulation of distributed runoff. However, the role of interception by the triple-layer tropical canopy and the magnitude of evapotranspiration are uncertain. New data collection is proposed in the Rio Chagres catchment to help quantify interception and evapotranspiration. This instrumentation will include measurements of rainfall above the canopy, cloud stripping, stemflow, throughfall, soil moisture, groundwater, interflow

  18. Limited representation of drinking-water contaminants in pregnancy-birth cohorts.

    PubMed

    Makris, Konstantinos C; Andra, Syam S

    2014-01-15

    Water contamination and noise have been consistently the least assessed environmental/lifestyle exposures in pregnancy-birth cohorts (PBC). Water quality surveillance data collected during the past decade within urban drinking-water distribution systems call for re-evaluation of water and health issues in the developed world. The objectives of this scientific commentary were to (i) highlight the extent of appraisal of water contamination in exposure assessment studies of PBC, worldwide, and (ii) propose recommendations to increase awareness of emerging water-related risks through their improved representation into PBC study designs in urban centers. Three scientific literature databases (Scopus, PubMed, and Web of Science) were used for a systematic search on worldwide PBC and their publications that considered water contamination and health outcomes. Publicly-available e-databases (ENRIECO, BIRTHCOHORTS, and CHICOS) were also employed for detailed exploration of existing European Union (EU)-based PBC. Out of the 76 PBC identified in the EU territory, only 12 of them incorporated water contamination into their study designs. Among which only 6 PBC published scientific articles that either included data on water contamination and/or water intake estimates. Trihalomethanes but not other disinfection by-products were mostly studied in the PBC around the globe, while fluoride, atrazine, perfluorinated compounds, tetrachloroethylene, and lead were studied to a lesser extent as water contaminants. It appears that chemical-based water contamination and corresponding human exposures represent a largely underappreciated niche of exposure science pertaining to pregnant mother and children's health in PBC. Future PBC studies should grasp this opportunity to substantially reform elements of water contamination in their exposure assessment protocols and effectively combine them with their epidemiological study designs.

  19. [Coproantigens detection for the diagnosis of canine Echinococcosis in the border area of La Quiaca-Villazón].

    PubMed

    Casas, Natalia; Costas Otero, Sergio; Céspedes, Graciela; Sosa, Sonia; Santillán, Graciela

    2013-01-01

    Cystic Echinococcosis is a major public health issue. Immunodiagnostic techniques based on the identification of parasite antigens in dog dry faeces have been developed as alternatives for the surveillance of canine Echinococcosis. The environmental conditions favouring the parasite cycle were met in the border of La Quiaca-Villazón, given the presence of definitive (dog) and intermediate hosts (sheep and goats). The most important activity in La Puna is sheep and goat rearing; slaughtering is carried out almost exclusively in the field by sheep's owners, and preventive health measures do not apply. The aim of this study was to determine the presence of dogs parasitized by Echinococcus granulosus in this border region. A hundred and sixty eight (168) stool specimens were collected during 2006. La Quiaca samples were taken from the following selected areas: the semi-rural area of Barrios, the rural areas of Santa Catalina, Yavi Chico, El Portillo, Pumahuasi and Cara Cara and the urban area of La Quiaca; selected urban areas in Villazón and the semi-rural area of Ojo de Agua, Lampaya and Matancillas. The samples were analyzed by copro-ELISA -Western blot test. The cities of San Francisco and Barrios had a prevalence of 14.3% and 6.7%, respectively. A prevalence of 3.4% was observed in the urban area of Villazón, which indicates that dogs become infected in the rural areas and bring the risk into the city. Lampaya showed a prevalence of 30%. These findings suggest the need to implement strategies for the control of hydatidosis, both in urban and rural areas to avoid the increase and spread of Echinococcosis in the region. PMID:24165137

  20. Selenium and mercury in native and introduced fish species of patagonian lakes, Argentina.

    PubMed

    Arribére, M A; Ribeiro Guevara, S; Bubach, D F; Arcagni, M; Vigliano, P H

    2008-04-01

    A survey of mercury (Hg) and selenium (Se) contents was performed in fish collected from lakes located in two National Parks of the northern patagonian Andean range. Two native species, catfish (Diplomystes viedmensis) and creole perch (Percichthys trucha), and three introduced species, brown trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss), and brook trout (Salvelinus fontinalis), were caught from lakes Nahuel Huapi, Moreno, Traful, Espejo Chico, and Guillelmo belonging to Nahuel Huapi National Park and from lakes Futalaufquen and Rivadavia, Los Alerces National Park. In lake Moreno, fish diet items were analyzed and rainbow trout grown in a farm. Hg and Se were measured in muscle and liver tissues by instrumental neutron activation analysis. The average concentrations in muscle of Hg for all species, ages, and lakes are between 0.4 to 1.0 microg g(-1) dry weight (DW) with a few fish, mainly native, exceeding the United States Environmental Protection Agency health advisory for freshwater fish limited consumption, and from 0.8 to 1.5 microg g(-1) DW for Se. Average concentrations in liver of Hg in all species range from 0.4 to 0.9 microg g(-1) DW. Brown trout, the top predator in these lakes, showed the lowest average Hg burden in both tissues. Se concentrations in the liver of brown and rainbow trout, up to 279 microg g(-1) DW, are higher than those expected for nearly pristine lakes, exceeding 20 microg g(-1) DW, the threshold concentration associated with Se toxicity. These species show lower Hg contents in muscle, suggesting a possible detoxification of Hg by a Se-rich diet. Creole perch and velvet catfish livers have lower Se concentrations, with a narrower span of values (2.3 to 8.5 microg g(-1) and 3.3 to 5.5 microg g(-1) DW respectively).