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Sample records for agachona chica thinocorus

  1. When Informationists Get Involved: the CHICA-GIS Project.

    PubMed

    Whipple, Elizabeth C; Odell, Jere D; Ralston, Rick K; Liu, Gilbert C

    2013-01-01

    Child Health Improvement through Computer Automation (CHICA) is a computer decision support system (CDSS) that interfaces with existing electronic medical record systems (EMRS) and delivers "just-in-time" patient-relevant guidelines to physicians during the clinical encounter and accurately captures structured data from all who interact with the system. "Delivering Geospatial Intelligence to Health Care Professionals (CHICA-GIS)" (1R01LM010923-01) expands the medical application of Geographic Information Systems (GIS) by integrating a geographic information system with CHICA. To provide knowledge management support for CHICA-GIS, three informationists at the Indiana University School of Medicine were awarded a supplement from the National Library Medicine. The informationists will enhance CHICA-GIS by: improving the accuracy and accessibility of information, managing and mapping the knowledge which undergirds the CHICA-GIS decision support tool, supporting community engagement and consumer health information outreach, and facilitating the dissemination of new CHICA-GIS research results and services.

  2. 78 FR 17094 - Safety Zone; 2013 Naval Air Station Key West Air Spectacular, Boca Chica Channel; Boca Chica, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; 2013 Naval Air Station Key West Air... in Boca Chica, Florida, during the 2013 Naval Air Station Key West Air Spectacular. The safety zone is necessary to provide for the safety of life on navigable waters during the air show and air...

  3. The spindle protein CHICA mediates localization of the chromokinesin Kid to the mitotic spindle.

    PubMed

    Santamaria, Anna; Nagel, Susanna; Sillje, Herman H W; Nigg, Erich A

    2008-05-20

    Microtubule-based motor proteins provide essential forces for bipolar organization of spindle microtubules and chromosome movement, prerequisites of chromosome segregation during the cell cycle. Here, we describe the functional characterization of a novel spindle protein, termed "CHICA," that was originally identified in a proteomic survey of the human spindle apparatus [1]. We show that CHICA localizes to the mitotic spindle and is both upregulated and phosphorylated during mitosis. CHICA-depleted cells form shorter spindles and fail to organize a proper metaphase plate, highly reminiscent of the phenotype observed upon depletion of the chromokinesin Kid, a key mediator of polar ejection forces [2-6]. We further show that CHICA coimmunoprecipitates with Kid and is required for the spindle localization of Kid without affecting its chromosome association. Moreover, upon depletion of either CHICA or Kid (or both proteins simultaneously), chromosomes collapse onto the poles of monastrol-induced monopolar spindles. We conclude that CHICA represents a novel interaction partner of the chromokinesin Kid that is required for the generation of polar ejection forces and chromosome congression.

  4. Inventory and Evaluation of Cultural Resources, Bolsa Chica Mesa and Huntington Beach Mesa, Orange County, California

    DTIC Science & Technology

    1989-09-30

    especially groves of eucalyptus . Ground visibility was generally fair to good. Most of Bolsa Chica Mesa is covered by agricultural fields, although some oil...This is the essence of site significance evaluations, and ultimately should be the goal of the testing program. Methods Because the nature of sites and

  5. Arrabidaea chica Hexanic Extract Induces Mitochondrion Damage and Peptidase Inhibition on Leishmania spp.

    PubMed Central

    Rodrigues, Igor A.; Azevedo, Mariana M. B.; Chaves, Francisco C. M.; Alviano, Celuta S.; Alviano, Daniela S.; Vermelho, Alane B.

    2014-01-01

    Currently available leishmaniasis treatments are limited due to severe side effects. Arrabidaea chica is a medicinal plant used in Brazil against several diseases. In this study, we investigated the effects of 5 fractions obtained from the crude hexanic extract of A. chica against Leishmania amazonensis and L. infantum, as well as on the interaction of these parasites with host cells. Promastigotes were treated with several concentrations of the fractions obtained from A. chica for determination of their minimum inhibitory concentration (MIC). In addition, the effect of the most active fraction (B2) on parasite's ultrastructure was analyzed by transmission electron microscopy. To evaluate the inhibitory activity of B2 fraction on Leishmania peptidases, parasites lysates were treated with the inhibitory and subinhibitory concentrations of the B2 fraction. The minimum inhibitory concentration of B2 fraction was 37.2 and 18.6 μg/mL for L. amazonensis and L. infantum, respectively. Important ultrastructural alterations as mitochondrial swelling with loss of matrix content and the presence of vesicles inside this organelle were observed in treated parasites. Moreover, B2 fraction was able to completely inhibit the peptidase activity of promastigotes at pH 5.5. The results presented here further support the use of A. chica as an interesting source of antileishmanial agents. PMID:24818162

  6. Afro-Mestizo Speech from Costa Chica, Guerrero: From Cuaji to Cuijla.

    ERIC Educational Resources Information Center

    Althoff, Daniel

    1994-01-01

    Traces the history of Africans in Mexico and the Costa Chica and compares elements of the regional speech as described in a 1958 study with data collected on-site in 1991-1992. Findings indicate that the successful introduction of public education coupled with the ubiquity of the mass media have reduced or eliminated the more distinctively…

  7. Evaluation of Safety of Arrabidaea chica Verlot (Bignoniaceae), a Plant with Healing Properties.

    PubMed

    Gemelli, Tiago Farret; Prado, Lismare da Silva; Santos, Franciele Souza; de Souza, Ana Paula; Guecheva, Temenouga Nikolova; Henriques, João Antonio Pêgas; Ferraz, Alexandre de Barros Falcão; Corrêa, Dione Silva; Dihl, Rafael Rodrigues; Picada, Jaqueline Nascimento

    2015-01-01

    Arrabidaea chica Verlot (Bignoniaceae) has been used as a medicinal herb to treat anemia, hemorrhage, inflammation, intestinal colic, hepatitis, and skin infections in the Brazilian Amazon region. Studies have demonstrated the healing properties of extracts obtained from A. chica leaves, which contain anthocyanins and flavonoids. However, few investigations have assessed the safe use of this plant species. In this study, mutagenic and genotoxic effects of a crude aqueous extract, a butanolic fraction, and aqueous waste from A. chica leaves were evaluated using the Salmonella/microsome assay in TA98, TA97a, TA100, TA102, and TA1535 strains and the alkaline comet assay in Chinese hamster ovary (CHO) cell culture with and without metabolic activation. The crude aqueous extract, butanolic fraction, and aqueous waste were not mutagenic in any of the Salmonella typhimurium strains tested, and showed negative responses for genotoxicity in CHO cells. High-performance liquid chromatography (HPLC) analysis indicated the presence of phenolic acids and flavonoids such as rutin and luteolin. The lack of mutagenic/genotoxic effects might be due to phytochemical composition with high concentrations of known anti-inflammatory compounds. Thus, the crude aqueous extract, butanolic fraction, and aqueous waste from A. chica leaves do not appear to pose short-term genotoxic risks.

  8. Antioxidant Capacity of the Leaf Extract Obtained from Arrabidaea chica Cultivated in Southern Brazil

    PubMed Central

    Siraichi, Jackeline Tiemy Guinoza; Felipe, Daniele Fernanda; Brambilla, Lara Zampar Serra; Gatto, Melissa Junqueira; Terra, Vânia Aparecida; Cecchini, Alessandra Lourenco; Cortez, Lucia Elaine Ranieri; Rodrigues-Filho, Edson; Cortez, Diógenes Aparício Garcia

    2013-01-01

    Arrabidaea chica leaf extract has been used by people as an anti-inflammatory and astringent agent as well as a remedy for intestinal colic, diarrhea, leucorrhea, anemia, and leukemia. A. chica is known to be a good producer of phenolics. Therefore, in the present study, we investigated its antioxidant activity. The phenolic composition of A. chica leaves was studied by liquid chromatography coupled to diode array detection (LC–DAD) and liquid chromatography coupled to electrospray ionization-tandem mass spectrometry (LC–ESI-MS/MS), and isoscutellarein, 6-hydroxyluteolin, hispidulin, scutellarein, luteolin, and apigenin were identified. The extract from leaves of A. chica was tested for antioxidant activity using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method, β-carotene bleaching test, and total reactive antioxidant potential (TRAP) method. The crude extract quenched DPPH free radicals in a dose-dependent manner, and the IC50 of the extract was 13.51 µg/mL. The β-carotene bleaching test showed that the addition of the A. chica extract in different concentrations (200 and 500 µg/mL) prevented the bleaching of β-carotene at different degrees (51.2% ±3.38% and 94% ±4.61%, respectively). The TRAP test showed dose-dependent correlation between the increasing concentrations of A. chica extract (0.1, 0.5, and 1.0 µg/mL) and the TRAP values obtained by trolox (hydro-soluble vitamin E) 0.4738±0.0466, 1.981±0.1603, and 6.877±1.445 µM, respectively. The 2 main flavonoids, scutellarein and apigenin, were separated, and their antioxidant activity was found to be the same as that of the plant extract. These 2 flavonoids were quantified in the plant extract by using a validated HPLC-UV method. The results of these tests showed that the extract of A. chica had a significant antioxidant activity, which could be attributed to the presence of the mixture of flavonoids in the plant extract, with the main contribution of scutellarein and apigenin. PMID:24009700

  9. Chitosan–tripolyphosphate nanoparticles as Arrabidaea chica standardized extract carrier: synthesis, characterization, biocompatibility, and antiulcerogenic activity

    PubMed Central

    Servat-Medina, Leila; González-Gómez, Alvaro; Reyes-Ortega, Felisa; Sousa, Ilza Maria Oliveira; de Cássia Almeida Queiroz, Nubia; Zago, Patricia Maria Wiziack; Jorge, Michelle Pedrosa; Monteiro, Karin Maia; de Carvalho, João Ernesto; Román, Julio San; Foglio, Mary Ann

    2015-01-01

    Natural products using plants have received considerable attention because of their potential to treat various diseases. Arrabidaea chica (Humb. & Bonpl.) B. Verlot is a native tropical American vine with healing properties employed in folk medicine for wound healing, inflammation, and gastrointestinal colic. Applying nanotechnology to plant extracts has revealed an advantageous strategy for herbal drugs considering the numerous features that nanostructured systems offer, including solubility, bioavailability, and pharmacological activity enhancement. The present study reports the preparation and characterization of chitosan–sodium tripolyphosphate nanoparticles (NPs) charged with A. chica standardized extract (AcE). Particle size and zeta potential were measured using a Zetasizer Nano ZS. The NP morphological characteristics were observed using scanning electron microscopy. Our studies indicated that the chitosan/sodium tripolyphosphate mass ratio of 5 and volume ratio of 10 were found to be the best condition to achieve the lowest NP sizes, with an average hydrodynamic diameter of 150±13 nm and a zeta potential of +45±2 mV. Particle size decreased with AcE addition (60±10.2 nm), suggesting an interaction between the extract’s composition and polymers. The NP biocompatibility was evaluated using human skin fibroblasts. AcE-NP demonstrated capability of maintaining cell viability at the lowest concentrations tested, stimulating cell proliferation at higher concentrations. Antiulcerogenic activity of AcE-NP was also evaluated with an acute gastric ulcer experimental model induced by ethanol and indomethacin. NPs loaded with A. chica extract reduced the ulcerative lesion index using lower doses compared with the free extract, suggesting that extract encapsulation in chitosan NPs allowed for a dose reduction for a gastroprotective effect. The AcE encapsulation offers an approach for further application of the A. chica extract that could be considered a

  10. The elusive character of discontinuous deep-water channels: New insights from Lucia Chica channel system, offshore California

    USGS Publications Warehouse

    Maier, K.L.; Fildani, A.; Paull, C.K.; Graham, S.A.; McHargue, T.R.; Caress, D.W.; McGann, M.

    2011-01-01

    New high-resolution autonomous underwater vehicle (AUV) seafloor images, with 1 m lateral resolution and 0.3 m vertical resolution, reveal unexpected seafloor rugosity and low-relief (<10 m), discontinuous conduits over ~70 km2. Continuous channel thalwegs were interpreted originally from lower-resolution images, but newly acquired AUV data indicate that a single sinuous channel fed a series of discontinuous lower-relief channels. These discontinuous channels were created by at least four avulsion events. Channel relief, defined as the height from the thalweg to the levee crest, controls avulsions and overall stratigraphic architecture of the depositional area. Flowstripped turbidity currents separated into and reactivated multiple channels to create a distributary pattern and developed discontinuous trains of cyclic scours and megaflutes, which may be erosional precursors to continuous channels. The diverse features now imaged in the Lucia Chica channel system (offshore California) are likely common in modern and ancient systems with similar overall morphologies, but have not been previously mapped with lower-resolution detection methods in any of these systems. ?? 2011 Geological Society of America.

  11. Reptile and rodent parasites in raptor pellets in an archaeological context: the case of Epullán Chica (northwestern Patagonia, Argentina)

    NASA Astrophysics Data System (ADS)

    Beltrame, María Ornela; Fernández, Fernando Julián; Sardella, Norma Haydeé

    2015-07-01

    Paleoparasitology is the study of parasite remains from archaeological and paleontological sites. Raptor pellets can be used as source for paleoparasitological information in archaeological sites. However, this zooarchaeological material has been scarcely studied. Epullán Chica (ECh) is an archaeological site in northwestern Patagonia. This cave yielded remains from more than 2000 years before present. The aim of this paper was to study the parasite remains found in owl pellets from the archaeological site ECh, and to discuss the paleoparasitological findings in an archaeological context. Twenty two raptor pellets were examined for parasites. The pellets were whole processed by rehydration in a 0.5% water solution of trisodium phosphate, followed by homogenization, filtered and processed by spontaneous sedimentation. Eight out of 22 bird pellets examined were positive for parasites from reptiles and rodents. Representatives of 12 parasite taxa were recorded; nine of this parasitic species were reported for the first time from ancient samples from Patagonia. This is the first time that pellets give evidences of ancient reptile parasites from archaeological contexts. It is noteworthy that Late Holocene hunter-gatherers of the upper Limay River basin, could have been exposed to some of these zoonotic parasites. Future paleoparasitological studies on owl pellets may reflect even more the parasitological diversity of all micromammal and reptile species presents in ancient times.

  12. Cloning and functional expression of secreted phospholipases A(2) from Bothrops diporus (Yarará Chica).

    PubMed

    Yunes Quartino, Pablo Javier; Barra, José Luis; Fidelio, Gerardo Daniel

    2012-10-19

    Bothrops diporus is a very common viper in Argentina. At present, no complete sequence of secreted phospholipase A(2) (sPLA(2)) from this snake has been reported. We have cloned two sPLA(2) isoenzymes as well as a putative sPLA(2)-like myotoxin from venom gland. The two sPLA(2) were expressed as inclusion bodies in Escherichia coli with an N-terminal tag of ubiquitin. After in vitro renaturation and cleavage step, using an ubiquitin specific peptidase, the recombinants exhibited sPLA(2) activity when analyzed by means of Langmuir dilauroylphosphatidylcholine monolayers as substrate. Both enzymes have a similar surface pressure-activity profile when compared with non-recombinant purified isoforms. To our knowledge, this is the first time that analysis of optimal lateral pressure of substrate monolayers by using the surface barostat technique is performed on recombinant sPLA(2)s.

  13. Development of a 94 GHZ Radar System for Dedicated Bird Detection at Airports and Airfields

    DTIC Science & Technology

    2006-01-01

    CA; Bolsa Chica Bird Reserve, CA; and DFW Airport, TX. Small bird detections were reported at distances of 1.2 to 1.3 km and large birds, such as...17 6. BOLSA CHICA BIRD RESERVE TESTS...SALTON SEA, BOLSA CHICA BIRD RESERVE, AND DFW AIRPORT................................................................................. 5 FIGURE 1-6

  14. Defense Communications Agency Cost and Planning Factors Manual. Change 1.

    DTIC Science & Technology

    1984-06-11

    2,377 W. Sweetgrass, MT 1,860 Boca Chica , FL Homestead, FL 105 Cape Canaveral, FL Vandenberg, CA 2,376 I Ft. Detrick, MD Ft. Leavenworth, KS 933 Ft...VA 62 Stockton, CA 2,335 Ft. Meade, MD 60 Arlington, VA 62 Norfolk, VA Boca Chica , FL 912 Cutter, ME 716 Pentagon, VA 148 S"’~, -~ *~" 14 ’ N M

  15. Mississippi River Study of Alternatives for Rehabilitation of Lock and Dam Number 1. Minneapolis, Minnesota. Supporting Data for Appendix C. Structural Investigations

    DTIC Science & Technology

    1976-04-01

    6 Q t FOR USE ON US, GOVERNMENT WORK ONLY 6c i ~ ~ENGINEERING ••; 7 ,/Z , N- CHICA GO co mp~ t 1112 " 0 ATI • w _ P t 7oha 7’ VP A/yv’vVo’Z7V...8217 PRtojgc TAy INGINtERING ~F~ o ___ COMPANY~ /M/k~I CHICA O A opus /, Tb ICI’A)10A947,1V1 PAT //,so~’’z 11-?7rro at 2.30’ /t ± F-Sb FORt UBE ON U-6

  16. 7 CFR 353.3 - Where service is offered.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ..., GA, KY, MS, TN, NC, SC, PR, US VI. Central, 3505 Boca Chica Blvd., Suite 360, Brownsville, TX 78521... pursuant to section 9 of the Endangered Species Act of 1973, as amended (16 U.S.C. 1538). The following locations are designated in 50 CFR part 24 as ports for export of terrestrial plants listed in 50 CFR...

  17. 7 CFR 353.3 - Where service is offered.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ..., GA, KY, MS, TN, NC, SC, PR, US VI. Central, 3505 Boca Chica Blvd., Suite 360, Brownsville, TX 78521... pursuant to section 9 of the Endangered Species Act of 1973, as amended (16 U.S.C. 1538). The following locations are designated in 50 CFR part 24 as ports for export of terrestrial plants listed in 50 CFR...

  18. A revision of Bephrata and Isosomodes (Hymenoptera: Eurytomidae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The genera Bephrata Cameron and Isosomodes Ashmead are redefined and redescribed. We describe 22 species as new: B. atra, B. bouceki, B. camacho, B. chica, B. christeri, B. citri, B. clava, B. flava, B. leptogaster, B. lorraineae, B. nigracephala, B. noyesi, B. nublada, B. petiolata, B. stichogaster...

  19. Wave Height Characteristics in the North Atlantic Ocean: a New Approach Based on Statistical and Geometrical Techniques

    DTIC Science & Technology

    2011-11-20

    geostatistical simulations for restricted samples. On the other hand, Cai et al. (2002) applied information theoretic analysis on self-clustering of amino...assimilation system. J Atmos Ocean Sci 10(2):61–93 Iguzquiza E, Chica-Olmo M (2008) Geostatistical simulation when the number of experimental data is small: an

  20. The Soviet Involvement in the Ogaden War

    DTIC Science & Technology

    1980-02-01

    306 tren . Experimentation. and Context." 36 pp.. 1 Sep sequences of Political Philosophy." 8 pp.. Apr 1976 197S. IPublished in Simulation & Games. Vol...Military ties." 24 pp., De c 1919 (Publihed in Journal of Poehire"). Chica , Ill.. September 2, 1976) Chemical Phytics. Vol. 89. No. 8, Oct 16. 1978) - 4

  1. What's so special about RB?

    PubMed

    Burd, Christin E; Sharpless, Norman E

    2010-04-13

    RB, p107, and p130 are highly related proteins, each capable of regulating cellular proliferation. However, only RB is frequently mutated in cancer. In this issue of Cancer Cell, Chicas et al. shed new light on this conundrum, defining a "special," nonredundant role for RB in promoting cellular senescence.

  2. What’s So Special about RB?

    PubMed Central

    Burd, Christin E.; Sharpless, Norman E.

    2013-01-01

    RB, p107, and p130 are highly related proteins, each capable of regulating cellular proliferation. However, only RB is frequently mutated in cancer. In this issue of Cancer Cell, Chicas et al. shed new light on this conundrum, defining a “special,” nonredundant role for RB in promoting cellular senescence. PMID:20385355

  3. Testing of conductivity/calcium and rubidium/strontium ratios as indicators of the chemical stability of a river: comparison with a biological indicator.

    PubMed

    Nirel, P M V; Lazzarotto, J

    2005-01-01

    It is customary to detect pollution in a water flow by monitoring the increase of sensitive elements concentrations (NH4+, PO4(3-), NO3-...). However, concentrations are dependent on the flow rate and these compounds are not conservative, implying a concentration decrease downstream leading to false negative diagnosis of pollution impact. The use of elemental ratios of conservative compounds should diminish these pitfalls. We then thought of the chi/Ca (conductivity/calcium) and Rb/Sr (rubidium/strontium) ratios as water chemical stability indicators to clearly identify and discriminate point from diffuse pollutions. This hypothesis has been tested on 12 brooks located in the basin of Lake Geneva, during 2 hydrological years. The results were compared to the observed land use of the watershed and a biological indicator: the Pollution Sensitivity Index (PSI). The PSI is calculated from diatom taxonomy and evaluates biological quality with a grade ranging from 0 to 20 (bad to excellent). The main results of the research can be summarized as follows. The pollution signal is observable far downstream of the pollution site. Both chi/Ca and Rb/Sr ratios are water quality indicators expressing the stability of water chemistry. They can both be used to detect diffuse and point pollution impact. These indicators provide complementary information: chi/Ca variations increase in case of point pollution; Rb/Sr variations increase when diffuse pollutions occur. The results obtained with the indicators chi/Ca and Rb/Sr agree with biological indicator and observation of the land use. chi/Ca and Rb/Sr ratios represent important tools to identify and discriminate point source pollution from diffuse pollution.

  4. Bolsa Bay, California, Proposed Ocean Entrance System Study. Report 2. Comprehensive Shoreline Response Computer Simulation, Bolsa Bay, California

    DTIC Science & Technology

    1990-04-01

    1980). 27. The success of the inlet channel at Agua Hedionda indicates that a stable non-navigable entrance at Bolsa Chica could be feasible provided a...dual jetty system similar to Agua Hedionda is incorporated into the design. However, structures that penetrate into the active surf zone are expected...and from the south in the summer months. i. The surfbreak rarely closes out. j. Surfing is best in the morning before the sea breeze becomes strong. 13

  5. Repair of Waterstop Failures: Case Histories

    DTIC Science & Technology

    1986-11-01

    EOOAL TO M0-01·10 "A SHCUL’’,BT D(UBO.M CMEIICAl COIPAN1. CHICA ;O, ILLINOIS OlL~~AUlllM& ~~NT: SIIILAA 011 EQUAL 10 !UTTl RUIUR SUlAMT.BT IACJUMIUI...to escape through the upstream joint. The second contributing factor was the tren ,endous frictionaJ f·:~rce buildup bet\\·Te<,;1 tl ,, surfaces of

  6. Bolsa Bay, California, Proposed Ocean Entrance System Study. Report 3. Tidal Circulation and Transport Computer Simulation and Water Quality Assessment. Section 1. California Coastal Commission’s 1986 Certified Land Use Plan and Secondary Alternative

    DTIC Science & Technology

    1990-03-01

    Rep- resentatives, United States, that the Board of Engineers for Rivers and Harbors is hereby requested to review the reports on the coast of southern...Nichol, Engineers . 1986b (Oct). "Draft Preliminary Desilting Basin Design for East Garden Grove-Wintersburg Channel at the Proposed Bolsa Chica...ALTERNATIVE by _ _ Lyndell Z. Hales, Sandra L. Bird, Bruce A. Ebersole N.,Coastal Engineering Research Center DEPARTMENT OF THE ARMY Waterways

  7. Bolsa Bay, California, Proposed Ocean Entrance System Study. Report 3. Tidal Circulation and Transport Computer Simulation and Water Quality Assessment. Section 2. Signal Landmark’s Proposed Secondary Alternative ’The Lake Plan’

    DTIC Science & Technology

    1990-03-01

    Preliminary Desilting Basin Design for East Garden Grove-Wintersburg Channel at the Proposed Bolsa Chica Project," Moffatt & Nichol, Engineers, Long Beach...BLS MISCELLANEOUS PAPER CERC-89-17 BOLSA BAY, CALIFORNIA, PROPOSED OCEAN ENTRANCE SYSTEM STUDY Report 3 TIDAL CIRCULATION AND TRANSPORT COMPUTER...SIMULATION AND WATER QUALITY ASSESSMENT _ -- SECTION 2: SIGNAL LANDMARK’S PROPOSED SECONDARY ALTERNATIVE "THE LAKE PLAN" by Lyndell Z. Hales, Sandra L

  8. Thermodynamic properties of calcium-bismuth alloys determined by emf measurements

    SciTech Connect

    Kim, H; Boysen, DA; Bradwell, DJ; Chung, BC; Jiang, K; Tomaszowska, AA; Wang, KL; Wei, WF; Sadoway, DR

    2012-01-15

    The thermodynamic properties of Ca-Bi alloys were determined by electromotive force (emf) measurements to assess the suitability of Ca-Bi electrodes for electrochemical energy storage applications. Emf was measured at ambient pressure as a function of temperature between 723 K and 1173 K using a Ca(s)vertical bar CaF2(s)vertical bar Ca(in Bi) cell for twenty different Ca-Bi alloys spanning the entire range of composition from chi(Ca) = 0 to 1. Reported are the temperature-independent partial molar entropy and enthalpy of calcium for each Ca-Bi alloy. Also given are the measured activities of calcium, the excess partial molar Gibbs energy of bismuth estimated from the Gibbs-Duhem equation, and the integral change in Gibbs energy for each Ca-Bi alloy at 873 K, 973 K, and 1073 K. Calcium activities at 973 K were found to be nearly constant at a value a(Ca) = 1 x 10(-8) over the composition range chi(Ca) = 0.32-0.56, yielding an emf of similar to 0.77 V. Above chi(Ca) = 0.62 and coincident with Ca5Bi3 formation, the calcium activity approached unity. The Ca-Bi system was also characterized by differential scanning calorimetry over the entire range of composition. Based upon these data along with the emf measurements, a revised Ca-Bi binary phase diagram is proposed. (C) 2011 Elsevier Ltd. All rights reserved.

  9. [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.

  10. Automated Primary Care Screening in Pediatric Waiting Rooms

    PubMed Central

    Carroll, Aaron E.; Downs, Stephen M.

    2012-01-01

    BACKGROUND AND OBJECTIVE: Implementing US Preventive Services Task Force and American Academy of Pediatrics preventive service guidelines within the short duration of a visit is difficult because identifying which of a large number of guidelines apply to a particular patient is impractical. Clinical decision support system integrated with electronic medical records offer a good strategy for implementing screening in waiting rooms. Our objective was to determine rates of positive risk screens during typical well-care visits among children and adolescents in a primary care setting. METHODS: Child Health Improvement through Computer Automation (CHICA) is a pediatric clinical decision support system developed by our research group. CHICA encodes clinical guidelines as medical logic modules to generate scanable paper forms: the patient screening form to collect structured data from patient families in the waiting room and the physician worksheet to provide physician assessments at each visit. By using visit as a unit of analysis from CHICA’s database, we have determined positive risk screen rates in our population. RESULTS: From a cohort of 16 963 patients, 408 601 questions were asked in 31 843 visits. Of the questions asked, 362 363 (89%) had a response. Of those, 39 176 (11%) identified positive risk screens in both the younger children and the adolescent age groups. CONCLUSIONS: By automating the process of screening and alerting the physician to those who screened positive, we have significantly decreased the burden of identifying relevant guidelines and screening of patient families in our clinics. PMID:22508925

  11. Documentation Status as a Contextual Determinant of HIV Risk Among Young Transgender Latinas

    PubMed Central

    Palazzolo, Sarah L.; De Jesus, Maria; Maguire-Marshall, Molly; Barker, Suyanna L.

    2016-01-01

    Abstract Purpose: The purpose of this study was to explore the contextual factors that determine or mitigate vulnerability to HIV among Latina transgender women. Documentation status (legal authorization to live in the United States) has been cited by other studies as a barrier to recruitment or engagement in HIV-related care among immigrant Latinos, but not explored as a determinant of HIV risk for transgender immigrant Latinas. Methods: We collaborated with a community-based organization to explore these contextual, including social and structural, factors. In-depth interviews in Spanish captured life histories of eight 18- to 29-year-old transgender Latinas, who collectively self-identify as chicas trans. Codes were assigned deductively from the interview guide, and emerging themes were identified throughout data collection. Results: Most participants migrated to the United States from Central America after experiencing discrimination and violence in their countries of origin. Participants emphasized documentation status as a critical factor in three areas related to social and structural determinants of HIV risk: gender identity expression, access to services, and relationship power dynamics. Chicas trans who gained legal asylum reported greater control over sexual relationships, improved access to services, and less risky employment. Conclusions: Documentation status emerged as a key HIV risk factor for this population. For undocumented transgender Latinas, legal asylum appears to be a promising HIV-related protective factor. Further research could assess whether legal assistance combined with wraparound support services affects HIV prevention for this population. PMID:26669583

  12. Parallel speciation in Astyanax cave fish (Teleostei) in Northern Mexico.

    PubMed

    Strecker, Ulrike; Hausdorf, Bernhard; Wilkens, Horst

    2012-01-01

    We investigated differentiation processes in the Neotropical fish Astyanax that represents a model system for examining adaptation to caves, including regressive evolution. In particular, we analyzed microsatellite and mitochondrial data of seven cave and seven surface populations from Mexico to test whether the evolution of the cave fish represents a case of parallel evolution. Our data revealed that Astyanax invaded northern Mexico across the Trans-Mexican Volcanic Belt at least three times and that populations of all three invasions adapted to subterranean habitats. Significant differentiation was found between the cave and surface populations. We did not observe gene flow between the strongly eye and pigment reduced old cave populations (Sabinos, Tinaja, Pachon) and the surface fish, even when syntopically occurring like in Yerbaniz cave. Little gene flow, if any, was found between cave populations, which are variable in eye and pigmentation (Micos, Chica, Caballo Moro caves), and surface fish. This suggests that the variability is due to their more recent origin rather than to hybridization. Finally, admixture of the young Chica cave fish population with nuclear markers from older cave fish demonstrates that gene flow between populations that independently colonized caves occurs. Thus, all criteria of parallel speciation are fulfilled. Moreover, the microsatellite data provide evidence that two co-occurring groups with small sunken eyes and externally visible eyes, respectively, differentiated within the partly lightened Caballo Moro karst window cave and might represent an example for incipient sympatric speciation.

  13. Analysis of betaS and betaA genes in a Mexican population with African roots.

    PubMed

    Magaña, María Teresa; Ongay, Zoyla; Tagle, Juan; Bentura, Gilberto; Cobián, José G; Perea, F Javier; Casas-Castañeda, Maricela; Sánchez-López, Yoaly J; Ibarra, Bertha

    2002-01-01

    To investigate the origin of the beta(A) and beta(S) genes in a Mexican population with African roots and a high frequency of hemoglobin S, we analyzed 467 individuals (288 unrelated) from different towns in the states of Guerrero and Oaxaca in the Costa Chica region. The frequency of the sickle-cell trait was 12.8%, which may represent a public health problem. The frequencies of the beta-haplotypes were determined from 350 nonrelated chromosomes (313 beta(A) and 37 beta(S)). We observed 15 different beta(A) haplotypes, the most common of which were haplotypes 1 (48.9%), 2 (13.4%), and 3 (13.4%). The calculation of pairwise distributions and Nei's genetic distance analysis using 32 worldwide populations showed that the beta(A) genes are more closely related to those of Mexican Mestizos and North Africans. Bantu and Benin haplotypes and haplotype 9 were related to the beta(S) genes, with frequencies of 78.8, 18.2, and 3.0%, respectively. Comparison of these haplotypes with 17 other populations revealed a high similitude with the population of the Central African Republic. These data suggest distinct origins for the beta(A) and beta(S) genes in Mexican individuals from the Costa Chica region.

  14. [Kleine-Levin syndrome: differential diagnosis in recurrent encephalitic syndromes in adolescence].

    PubMed

    Duat-Rodriguez, A; Martinez-Albadalejo, I; Perez-Sebastian, I; Cantarin-Extremera, V; Hedrera-Fernandez, A; Garcia-Penas, J J

    2017-04-01

    Introduccion. El sindrome de Kleine-Levin es una enfermedad rara de causa desconocida que se caracteriza por episodios recurrentes autolimitados de hipersomnia acompañados de alteracion cognitiva y conductual. Entre los episodios, los pacientes tienen un patron de sueño y cognitivo normal. Casos clinicos. Se presentan tres pacientes de 14 años, dos chicos y una chica. Comenzaron tras un desencadenante (vacuna, una infeccion respiratoria por influenza B; en el caso de la chica, coincidian con la menstruacion). En el episodio agudo mostraban tendencia al sueño y en vigilia destacaba bradipsiquia, inquietud motora y gran labilidad emocional, con tendencia al llanto y necesidad de la presencia de los familiares. Presentaron una duracion aproximada de 10-15 dias y periodicidad mensual, y se mostraron asintomaticos entre los episodios. Los tres pacientes fueron valorados por pediatras, diagnosticados y tratados de encefalitis autoinmune. Solo uno cumplia la triada tipica de hipersomnia, hiperfagia e hipersexualidad, pero ninguno de los tres datos se habia recogido en la historia clinica inicial y la familia solo lo referia tras una anamnesis dirigida. Conclusiones. En el sindrome de Kleine-Levin, los sintomas neurologicos durante el cuadro agudo son aun mas frecuentes que los psiquiatricos. La tendencia al sueño y el hecho de que durante la vigilia no esten asintomaticos y se muestren lentos, apaticos, labiles e irascibles, situa en primer lugar la sospecha de sindrome encefalitico. Debemos tener presente esta entidad en encefalitis recurrentes de etiologia no filiada.

  15. [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.

  16. 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.

  17. [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.

  18. 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

  19. [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.

  20. 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 =.

  1. Circadian rhythms in Mexican blind cavefish Astyanax mexicanus in the lab and in the field.

    PubMed

    Beale, Andrew; Guibal, Christophe; Tamai, T Katherine; Klotz, Linda; Cowen, Sophie; Peyric, Elodie; Reynoso, Víctor H; Yamamoto, Yoshiyuki; Whitmore, David

    2013-01-01

    Biological clocks have evolved as an adaptation to life on a rhythmic planet, synchronising physiological processes to the environmental light-dark cycle. Here we examine circadian clock function in Mexican blind cavefish Astyanax mexicanus and its surface counterpart. In the lab, adult surface fish show robust circadian rhythms in per1, which are retained in cave populations, but with substantial alterations. These changes may be due to increased levels of light-inducible genes in cavefish, including clock repressor per2. From a molecular standpoint, cavefish appear as if they experience 'constant light' rather than perpetual darkness. Micos River samples show similar per1 oscillations to those in the lab. However, data from Chica Cave shows complete repression of clock function, while expression of several light-responsive genes is raised, including DNA repair genes. We propose that altered expression of light-inducible genes provides a selective advantage to cavefish at the expense of a damped circadian oscillator.

  2. [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.

  3. 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).

  4. [Carotenogenesis of five strains of the algae Dunaliella sp. (Chlorophyceae) isolated from Venezuelan hypersaline lagoons].

    PubMed

    Guevara, Miguel; Lodeiros, César; Gómez, Olga; Lemus, Nathalie; Núñez, Paulino; Romero, Lolymar; Vásquez, Aléikar; Rosales, Néstor

    2005-01-01

    We evaluated discontinuous cultures (Algal medium at 0.5 mM of NaNO3, and 27% NaCI) of five strains of Dunaliella sp. isolated from Venezuelan hypersaline lagoons (Araya, Coche, Peonia, Cumaraguas. and Boca Chica) and one strain from a reference collection (Dunaliella salina, LB1644). Cultures were maintained to 25+/-1 degrees C, with constant aeration, photoperiod 12:12, and two light intensities (195 and 390 microE.m(-2).s(-1)) during 30 days. Cell count was recorded on a daily basis using a Neubaüer camera. Totals of chlorophyll a and carotenoids were measured at the end of the experiment. The largest cellular densities were measured during the smallest light intensities. The strain with the largest cellular density was isolated from Boca Chica (8 xl0(6) and 2.5 xl0(6) cel.ml(-1) a 390 and 195microE.m(-2).s(-1), respectively). The increment of light intensity produced a significant reduction of growth rates in all strains. Totals of carotenoids by volume were as large as 390 microE.m(-2).s(-1). Strains LB 1644, from Coche and Araya were those that produced the largest amount of carotenoids (38.4; 32.8 and 21.0 microg.ml(-1), respectively). Differences total carotenoids by cell between treatments were significant. The largest concentration was 390 microE.m(-2).s(-1). The strains LB 1644 and Coche produced the highest values of carotenes (137.14 and 106.06 pg.cel(-1), respectively). Differences in the relation carotenoid:chlorophyll a between the strains at various light intensities was significant. Strains LB1644 presented the largest value of the relation carotenoids:chlorophyll a (20:1) at 195 microE.m(-2).s(-1). No significant differences were detected in the strain Coche (15:1). All the other strains showed relations lower than one. Our results suggest that the strains of Coche and Araya show potential to be used in the biotechnology of carotenoids production.

  5. [Salivary cortisol as a measure of stress during a nutrition education program in adolescents].

    PubMed

    Pérez-Lancho, C; Ruiz-Prieto, I; Bolaños-Ríos, P; Jáuregui-Lobera, I

    2013-01-01

    Objetivos: Analizar el nivel de estrés, en distintos momentos académicos, mediante la determinación de cortisol salivar y evaluar la influencia de dicho nivel de estrés en la eficacia de un programa de educación nutricional en adolescentes. Métodos: Se determinó el cortisol salival (mañana y noche) de 42 estudiantes de educación secundaria obligatoria, al inicio de curso y en el momento previo a los exámenes finales. Se desarrolló durante el curso un programa de educación nutricional y se recogieron datos de consumo de alimentos mediante un cuestionario de frecuencia en ambos momentos inicial y final. Igualmente, se determinó el índice de masa corporal. Resultados: El cortisol de mañana inicial fue menor que el de mañana final (P < 0,05), con niveles más elevados en las chicas (P < 0,05). En la determinación final, el cortisol de mañana también resultó más elevado en las chicas (P < 0,01). No hubo variaciones significativas en el índice de masa corporal. El 23.8% de los estudiantes refirió ingerir menos bebidas carbonatadas tras la intervención, mientras que el 28,57% destacó el hecho de haber incluido el desayuno antes de salir de casa. Se observó una reducción del consumo de frutas al final del estudio. Discusión: Para valorar adecuadamente si los cambios están relacionados con el programa de educación nutricional o con la situación estresante debida a la proximidad de los exámenes, que implicaría un aumento en la ingesta, serían necesarios más estudios a realizar en diferentes etapas del curso académico.

  6. Variability in almond oil chemical traits from traditional cultivars and native genetic resources from Argentina.

    PubMed

    Maestri, Damián; Martínez, Marcela; Bodoira, Romina; Rossi, Yanina; Oviedo, Alejandro; Pierantozzi, Pierluigi; Torres, Mariela

    2015-03-01

    Almond (Prunus dulcis (Miller) D.A. Webb) genetic resources (Marcona, Guara, Non Pareil, IXL, AI, Martinelli C, Emilito INTA, Cáceres Clara Chica, Javier INTA) were studied during two consecutive crop years in order to evaluate variations in kernel oil yield and composition, and oil oxidative parameters. Total oil, oleic acid, α-tocopherol and squalene contents were found to range between 48.0% and 57.5%, 65% and 77.5%, 370 and 675 μg/g oil, and 37.9 and 114.2 μg/g oil, respectively. The genotype was the main variability source for all these chemical traits. The α-tocopherol content seems to be the most important contributor to both the radical scavenging capacity and the oxidative stability of almond oils analysed. Results obtained from the local genotypes namely Martinelli C, Emilito INTA and Javier INTA may be of interest for almond breeding focused to improve kernel oil yield and composition.

  7. Warm oceanographic anomalies and fishing pressure drive seabird nesting north

    PubMed Central

    Velarde, Enriqueta; Ezcurra, Exequiel; Horn, Michael H.; Patton, Robert T.

    2015-01-01

    Parallel studies of nesting colonies in Mexico and the United States show that Elegant Terns (Thalasseus elegans) have expanded from the Gulf of California Midriff Island Region into Southern California, but the expansion fluctuates from year to year. A strong inverse relationship between nesting pairs in three Southern California nesting areas [San Diego saltworks, Bolsa Chica Ecological Reserve, and Los Angeles Harbor (1991 to 2014)] and Isla Rasa in the Midriff (1980 to 2014) shows that terns migrate northward when confronting warm oceanographic anomalies (>1.0°C), which may decrease fish availability and hamper nesting success. Migration pulses are triggered by sea surface temperature anomalies localized in the Midriff and, secondarily, by reductions in the sardine population as a result of intensive fishing. This behavior is new; before year 2000, the terns stayed in the Midriff even when oceanographic conditions were adverse. Our results show that terns are responding dynamically to rapidly changing oceanographic conditions and fish availability by migrating 600 km northwest in search of more productive waters. PMID:26601193

  8. Domestic violence and social responsibility in contemporary Spanish cinema: a portfolio view of behavioral dynamics.

    PubMed

    Zanzana, Habib

    2010-01-01

    Domestic abuse continues to claim many lives in Spain despite a series of new laws to protect women and to punish abusers. This essay explores the cultural influences of contemporary Spanish cinema on domestic violence. Four films are assessed against a Portfolio Model of social responsibility that uses two basic dimensions: realism and human rights. Realism in each film is determined by the behavioral components of the internationally recognized Duluth Model and the Wheel of Power and Control. The human rights dimension addresses equality, power and agency for women. This study focuses on Icíar Bollaín's "Te doy mis ojos" (2003), Javier Balaguer's "Sólo mía" (2001), Benito Zambrano's "Solas" (1999), and Pedro Almodóvar's "Pepi, Luci, Bom y otras chicas del montón" (1980). The results demonstrate significant variations in the measure of social responsibility indicating that contemporary Spanish cinema may play a role in perpetuating gender-based violence.

  9. Low-income mothers as "othermothers" to their romantic partners' children: women's coparenting in multiple partner fertility relationships.

    PubMed

    Burton, Linda M; Hardaway, Cecily R

    2012-09-01

    In this article, we investigated low-income mothers' involvement in multiple partner fertility (MPF) relationships and their experiences as "othermothers" to their romantic partners' children from previous and concurrent intimate unions. Othermothering, as somewhat distinct from stepmothering, involves culturally-scripted practices of sharing parenting responsibilities with children's biological parents. We framed this investigation using this concept because previous research suggests that many low-income women practice this form of coparenting in their friend and kin networks. What is not apparent in this literature, however, is whether women unilaterally othermother their romantic partners' children from different women. How often and under what circumstances do women in nonmarital MPF intimate unions with men coparent their partners' children from other relationships? We explored this question using a modified grounded theory approach and secondary longitudinal ethnographic data on 256 low-income mostly unmarried mothers from the Three-City Study. Results indicated that 78% of the mothers had been or were involved in MPF unions and while most had othermothered the children of their friends and relatives, 89% indicated that they did not coparent their partners' children from any MPF relationship. Mothers' reasons for not doing so were embedded in: (a) gendered scripts around second families, or "casa chicas"; (b) the tenuous nature of pass-through MPF relationships; and (c) mothers' own desires for their romantic partners to child-swap. Implications of this research for family science and practice are discussed.

  10. [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.

  11. Development and preliminary evaluation of a behavioural HIV-prevention programme for teenage girls of Latino descent in the USA.

    PubMed

    Davidson, Tatiana M; Lopez, Cristina M; Saulson, Raelle; Borkman, April L; Soltis, Kathryn; Ruggiero, Kenneth J; de Arellano, Michael; Wingood, Gina M; Diclemente, Ralph J; Danielson, Carla Kmett

    2014-01-01

    National data suggests that teenage girls of Latino descent in the USA are disproportionately affected by HIV, with the US Centers for Disease Control and Prevention reporting the rate of new infections being approximately four times higher compared to White women of comparable age . This paper highlights the need for an effective single-sex HIV-prevention programme for teenage girls of Latino descent and describes the development and preliminary evaluation of Chicas Healing, Informing, Living and Empowering (CHILE), a culturally-tailored, HIV-prevention programme exclusively for teenage girls of Latino descent that was adapted from Sisters Informing, Healing, Living and Empowering (SiHLE), an evidence-based HIV- prevention program that is culturally tailored for African American young women. Theatre testing, a pre-testing methodology to assess consumer response to a demonstration of a product, was utilised to evaluate the relevance and utility of the HIV programme as well as opportunities for the integration of cultural constructs. Future directions for the evaluation of CHILE are discussed.

  12. Development and preliminary evaluation of a behavioural HIV prevention program for teenage girls of Latino descent in the USA

    PubMed Central

    Davidson, Tatiana M.; Lopez, Cristina M.; Saulson, Raelle; Borkman, April L.; Soltis, Kathryn; Ruggiero, Kenneth J.; de Arellano, Michael; Wingood, Gina M.; DiClemente, Ralph J.; Danielson, Carla Kmett

    2014-01-01

    National data suggests that teenage girls of Latino descent in the USA are disproportionately affected by HIV with the rate of new infections being approximately 4 times higher compared to White women of comparable age (Centers for Disease Control and Prevention 2013). This paper highlights the need for an effective single-sex HIV prevention program for teenage girls of Latino descent and describes the development and preliminary evaluation of Chicas Healing, Informing, Living and Empowering (CHILE), a culturally-tailored, HIV prevention programme exclusively for teenage girls of Latino descent that was adapted from Sisters Informing, Healing, Living, and Empowering (SiHLE), an evidence-based HIV prevention program that is culturally tailored for African American young women. Theatre testing, a pre-testing methodology to assess consumer response to a demonstration of a product, was utilised to evaluate the relevance and utility of the HIV program as well as opportunities for the integration of cultural constructs. Future directions for the evaluation of CHILE are discussed. PMID:24697607

  13. Competency in infection prevention: a conceptual approach to guide current and future practice.

    PubMed

    Murphy, Denise M; Hanchett, Marilyn; Olmsted, Russell N; Farber, Michelle R; Lee, Terri B; Haas, Janet P; Streed, Stephen A

    2012-05-01

    Professional competency has traditionally been divided into 2 essential components: knowledge and skill. More recent definitions have recommended additional components such as communication, values, reasoning, and teamwork. A standard, widely accepted, comprehensive definition remains an elusive goal. For infection preventionists (IPs), the requisite elements of competence are most often embedded in the IP position description, which may or may not reference national standards or guidelines. For this reason, there is widespread variation among these elements and the criteria they include. As the demand for IP expertise continues to rapidly expand, the Association for Professionals in Infection Control and Epidemiology, Inc, made a strategic commitment to develop a conceptual model of IP competency that could be applicable in all practice settings. The model was designed to be used in combination with organizational training and evaluation tools already in place. Ideally, the Association for Professionals in Infection Control and Epidemiology, Inc, model will complement similar competency efforts undertaken in non-US countries and/or international organizations. This conceptual model not only describes successful IP practice as it is today but is also meant to be forward thinking by emphasizing those areas that will be especially critical in the next 3 to 5 years. The paper also references a skill assessment resource developed by Community and Hospital Infection Control Association (CHICA)-Canada and a competency model developed by the Infection Prevention Society (IPS), which offer additional support of infection prevention as a global patient safety mission.

  14. 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.

  15. [The effect of a warm-up protocol on the sit-and-reach test score in adolescent students].

    PubMed

    Díaz-Soler, María Angeles; Vaquero-Cristóbal, Raquel; Espejo-Antúnez, Luis; López-Miñarro, Pedro Ángel

    2015-06-01

    Introducción: los test lineales son frecuentemente utilizados en las clases de educación física para evaluar la extensibilidad isquiosural del alumnado, sin que haya una estandarización del procedimiento para su realización. Objetivo: analizar la influencia de un protocolo de calentamiento en los resultados obtenidos en el test sit-andreach en estudiantes adolescentes. Metodología: a 47 adolescentes (17 chicos y 30 chicas) se les midió la distancia alcanzada en el test sit-and-reach antes, inmediatamente después de finalizar, así como a los 5 y 10 minutos tras finalizar un protocolo de calentamiento compuesto por una parte de carrera continua, actividades de locomoción y movilidad, además de estiramientos estáticos de cuádriceps, isquiosurales, aductores, psoas ilíaco y gemelos, con una duración total de 8 minutos. Entre las mediciones realizadas tras el calentamiento, los participantes permanecieron en bipedestación sin realizar ejercicio y/o estiramiento alguno. Resultados y discusión: tras el calentamiento hubo una mejora significativa en la distancia alcanzada en el test sit-and-reach (+ 2,15 cm) (p < 0,001), siendo ligeramente mayor a los 5 y 10 minutos (+ 2,49 cm a los 5 minutos y + 2,61 cm a los 10 minutos) (p < 0,001 respecto al pretest). Conclusiones: la realización de un protocolo de calentamiento previo al test sit-and-reach, compuesto por locomoción, movilidad y estiramientos, incrementa de manera significativa la distancia alcanzada en este test, que permanece aumentada, al menos, hasta 10 minutos después de finalizar el calentamiento.

  16. Geochronology and Stratigraphy of Pluvial Argentinean Lakes: Implications for Quaternary Climate Change

    NASA Astrophysics Data System (ADS)

    Cartwright, A.

    2009-12-01

    Shoreline deposits of pluvial lake systems can provide direct evidence of the timing and duration of lake high stands. Complemented by careful stratigraphic and geochemical analysis, these records also contain important paleoenvironmental information. Two lake systems were studied as part of a global effort to understand major climatic changes during the Last Glacial Maximum (LGM: 24-18 ka) and the following deglaciation (18-13 ka). Today, both of the studied regions are arid, and the lake basins contain much smaller lakes than in the past. Laguna Cari-Laufquen is located at 41°S and the modern basin is occupied by two lakes: Cari-Laufquen Grande and Chica. Preserved shorelines and sediments show these two lakes rose and merged multiple times during the Late Quaternary. An extensive radiocarbon geochronology show the lake was the highest during the LGM, with several smaller, more recent lake oscillations in the last thousand years. The second lake system in this study is Laguna Bebedero, located at 33°S in western Argentina. Previous studies show the highest shorelines date to 23-16,000 yrs BP. Our new radiocarbon dates help constrain the timing of the highstands - and show highstands during the deglacial period. Our lake highstand evidence provides a unique opportunity to reconstruct shifts in Atlantic (easterly)- or Pacific (westerly)-driven moisture. Geochemical studies of shell, water chemical analysis, and geospatial analysis also help to constrain hydrologic balance and paleoenvironmental conditions. Comparison of paleohydrologic records in South America. From top: Cariaco Basin - reconstructed sea-surface temperatures from Lea et al., 2003, Bolivian Lakes - Uyuni lake system phases from shoreline data (Placzek et al., 2006), Atacama Wetlands - wet events above local water table (Quade et al., 2008), Laguna Bebedero and Laguna Cari-Laufquen - lake level changes from this study.

  17. [Not Available].

    PubMed

    Cruz-Sáez, María Soledad; Pascual Jimeno, Aitziber; Wlodarczyk, Anna; Polo-López, Rocío; Echeburúa Odriozola, Enrique

    2016-07-19

    Introducción: los problemas relacionados con el peso constituyen un problema importante de salud pública debido a su alta prevalencia y a las adversas consecuencias que tienen para la salud.Objetivo: el objetivo principal de este estudio fue analizar si la depresión y la ansiedad tienen un papel mediador en la relación entre la insatisfacción corporal y las conductas de control del peso en chicas adolescentes con sobrepeso.Material y métodos: en el estudio participaron 140 mujeres de 16 a 20 años con sobrepeso. Las participantes tuvieron que cumplimentar la escala de insatisfacción corporal del EDI-2, las escalas de ansiedad y depresión del GHQ-28 y una adaptación de las escalas del EAT survey para evaluar las conductas de control del peso. Para los análisis estadísticos se utilizaron métodos de diferencias de medias, correlaciones y de mediación secuencial.Resultados: las adolescentes con sobrepeso y alta insatisfacción corporal presentaban más sintomatología ansiosa y depresiva, así como mayor cantidad de conductas de control del peso. Los resultados del análisis de mediación secuencial evidencian que el efecto de la insatisfacción corporal en las conductas de control del peso está parcialmente mediado por las variables depresión y ansiedad. Mientras que la sintomatología ansiosa presenta efectos directos e indirectos sobre las conductas de control de peso, la sintomatología depresiva solamente presenta un efecto indirecto.Conclusiones:los resultados del estudio destacan el rol mediador de la sintomatología depresiva y, especialmente, de la ansiedad en el desarrollo de conductas no saludables de control del peso.

  18. The genus Cephaloleia Chevrolat, 1836 (Coleoptera, Chrysomelidae, Cassidinae)

    PubMed Central

    Staines, Charles L.; García-Robledo, Carlos

    2014-01-01

    Abstract The species of the Neotropical genus Cephaloleia Chevrolat, 1836 are revised. We present a key to the known larvae of Cephaloleia (8 species), a key to the 95 species known to occur in Mexico, Central America and the West Indies, and a key to the 138 species known to occur in South America. All identification keys were translated to Spanish. Descriptions for the 214 known species of Cephaloleia as well as illustrations for 212 species are presented. The following species are removed from Cephaloleia: C. bipartita Pic, 1926c is transferred to Hybosispa Weise, 1910; C. minasensis Pic, 1931 and C. viridis Pic, 1931 are transferred to Stenispa Baly, 1858. The following species are described as new: C. abdita sp. n. from Brazil; C. amba sp. n. from Colombia, Ecuador, and Peru; C. angustacollis sp. n. from Ecuador; C. brevis sp. n. from French Guiana; C. calathae sp. n. from Costa Rica; C. chica sp. n. from Peru; C. conforma sp. n. from Costa Rica; C. crenulata sp. n. from Ecuador; C. gemma sp. n. from Bolivia and Brazil; C. horvitzae sp. n. from French Guiana; C. interrupta sp. n. from Costa Rica; C. kressi sp. n. from Costa Rica; C. lenticula sp. n. from Ecuador, French Guiana, Peru, and Suriname; C. nana sp. n. from Ecuador; C. ochra sp. n. from Ecuador; C. stainesi sp. n. from Costa Rica; and C. susanae sp. n. from Brazil and Ecuador. Cephaloleia simoni Pic, 1934 is treated as Incertae sedis. The larvae of C. erichsonii Baly, 1858 and C. puncticollis Baly, 1885 are described and illustrated. PMID:25197208

  19. Antioxidant activity and potential photoprotective from amazon native flora extracts.

    PubMed

    Martins, Francislene J; Caneschi, César A; Vieira, José L F; Barbosa, Wagner; Raposo, Nádia R B

    2016-08-01

    Plant species are sources of active compounds that can fight and/or prevent damage caused by reactive oxygen species, which enables the development of natural products that can help to prevent premature aging caused by exposure to solar radiation. This study assessed the antioxidant and photoprotective activities of six dried extracts of plants from the Brazilian Amazon biome. Plant extracts were prepared in 70% (v/v) ethanol by dynamic maceration for 72h in the dark, and then filtered, concentrated and lyophilized. The extracts were subjected to a phytochemical screening. The antioxidant activity was measured using a 2,2-diphenyl-1-picrylhydrazyl assay and the photoprotection assay was performed using the diffuse transmittance technique. The data obtained from the antioxidant activity assay was evaluated by Student's t-test for independent samples, with the aid of Statistical Package for Social Sciences v.14.0 for Windows software. The flavonoids represent a special metabolites class present in all analyzed extracts. The antioxidant activity (μgmL(-1)) decreased in the following order: Aniba canelilla (1.80±0.16), Brosimum acutifolium (2.84±0.38), Dalbergia monetaria (5.46±0.17) or Caesalpinia pyramidalis (6.45±1.18), Arrabidaea chica (15.35±0.86), and Aspidosperma nitidum (99.14±2.3). Only D. monetaria showed a considerable sun protection factor allowing for labeling (6.0±0.3). The D. monetaria extract was considered the most promising sample because it had optimal antioxidant and photoprotective activities against solar radiation, considering the limit established by regulatory agencies. These extracts with antioxidant potential can be used in photoprotective formulations, providing synergistic photoprotective effect or elevating the adeed value of the product. Additionally, these formulations are attractive to a population who searchs for products made with natural ingredients.

  20. 2D Magnetotelluric interpretation of the crust electrical resistivity across the Pampean terrane Río de la Plata suture, in central Argentina

    NASA Astrophysics Data System (ADS)

    Favetto, Alicia; Pomposiello, Cristina; López de Luchi, Mónica G.; Booker, John

    2008-11-01

    Magnetotelluric data were obtained along a 450 km, almost west-east profile at approximately 31.5° S, which extends from La Rioja to Santa Fé provinces in central Argentina. The profile crosses two main crustal domains that were juxtaposed during the Early-Middle Cambrian Pampean Orogeny: the Pampean terrane to the west and the Río de la Plata craton to the east. The electrical resistivity structure of the crustal domains together with their boundary is presented. Through dimensionality analysis of the data, it was demonstrated that regional-scale electrical structures are mainly two-dimensional with a strike direction oriented parallel to the surface geological strike. The resistivity model shows a subvertical limit approximately along the eastern border of the Sierra Chica de Córdoba. To the east, the shallower structure is the Chaco-Paranense basin extending to a depth of 6 km with resistivities between 1 and 30 Ohm-m, whereas below the basin the ca 2.1-2.3 Ga Río de la Plata craton shows resistivities in a range of 300-10,000 Ohm-m. The Pampean terrane presents a 6 km layer with a resistivity higher than 10,000 Ohm-m whereas below this layer the resistivity values range from 50 to 200 Ohm-m. Based on both the geological information and the magnetotelluric results, the sharp lateral discontinuity observed in the resistivity model to the east of the Sierras de Córdoba is conjectured to represent the boundary between the Río de la Plata craton and the Pampean terrane which may correspond to the Early Cambrian suture.

  1. 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.

  2. [Life style and monitoring of the dietary intake of students at the Melilla campus of the University of Granada].

    PubMed

    Navarro-Prado, Silvia; González-Jiménez, Emilio; Montero-Alonso, Miguel A; López-Bueno, Marta; Schmidt-RioValle, Jacqueline

    2015-06-01

    Introducción: los estudiantes universitarios representan un colectivo social en riesgo desde el punto de vista nutricional, ya que a menudo mantienen estilos de vida y hábitos nutricionales inapropiados. Objetivos: analizar el estilo de vida de los alumnos del Campus de la Universidad de Granada en Melilla. Analizar la evolución de los hábitos alimentarios de los estudiantes del campus durante el curso académico 2013-2014. Material y método: se realizó un estudio longitudinal durante el curso académico 2013-2014 en el cual, a su inicio, se evaluó el estilo de vida y, de forma continuada los hábitos nutricionales de un grupo representativo de 257 estudiantes, 90 chicos (35%) y 167 chicas (65%), todos ellos del campus de la Universidad de Granada en la Ciudad Autónoma de Melilla (norte de África). Resultados: los hábitos nutricionales empeoran a medida que avanza el curso académico, caracterizándose por una reducción significativa (p < 0.001) en la ingesta de carbohidratos, así como por una elevación significativa (p < 0.001) en la ingesta proteica y lipídica, siendo especialmente rica en grasas saturadas y baja en fibra. Conclusiones: la población estudiada posee un estilo de vida eminentemente sedentario. A medida que avanza el curso académico, los hábitos nutricionales de los estudiantes empeoran, alejándose del patrón de alimentación mediterráneo con el consiguiente riesgo de desarrollar enfermedades metabólicas y cardiovasculares. De estos resultados se desprende la necesidad de continuar profundizando a fin de identificar los factores que influyen en sus hábitos nutricionales y establecer las medidas correctoras oportunas.

  3. Computer Decision Support Changes Physician Practice But Not Knowledge Regarding Autism Spectrum Disorders

    PubMed Central

    Carroll, A.E.; Saha, C.; Downs, S.M.

    2015-01-01

    Summary Objective To examine whether adding an autism module promoting adherence to clinical guidelines to an existing computer decision support system (CDSS) changed physician knowledge and self-reported clinical practice. Methods The CHICA (Child Health Improvement through Computer Automation) system, a CDSS, was enhanced with a module to improve management of autism in 2 of the 4 community pediatric clinics using the system. We examined the knowledge and beliefs of pediatric users using cross-sectional surveys administered at 3 time points (baseline, 12 months and 24 months post-implementation) between November 2010 and January 2013. Surveys measured knowledge, beliefs and self-reported practice patterns related to autism. Results A total of 45, 39, and 42 pediatricians responded at each time point, respectively, a 95-100% response rate. Respondents’ knowledge of autism and perception of role for diagnosis did not vary between control and intervention groups either at baseline or any of the two post-intervention time points. At baseline, there was no difference between these groups in rates in the routine use of parent-rated screening instruments for autism. However, by 12 and 24 months post-implementation there was a significant difference between intervention and control clinics in terms of the intervention clinics consistently screening eligible patients with a validated autism tool. Physicians at all clinics reported ongoing challenges to community resources for further work-up and treatment related to autism. Conclusions A CDSS module to improve primary care management of ASD in pediatric practice led to significant improvements in physician-reported use of validated screening tools to screen for ASDs. However it did not lead to corresponding changes in physician knowledge or attitudes. PMID:26448791

  4. [ASSOCIATION BETWEEN HEALTH RELATED QUALITY OF LIFE, BODYWEIGHT STATUS (BMI) AND PHYSICAL ACTIVITY AND FITNESS LEVELS IN CHILEAN ADOLESCENTS].

    PubMed

    García-Rubio, Javier; Olivares, Pedro R; Lopez-Legarrea, Patricia; Gómez-Campos, Rossana; Cossio-Bolaños, Marco A; Merellano-Navarro, Eugenio

    2015-10-01

    Objetivos: el objetivo del presente estudio fue analizar las posibles relaciones entre la Calidad de Vida Relacionada con la Salud (CVRS) con el estado nutricional y los niveles de Actividad Física (AF) y Condición Física (CF) en adolescentes chilenos, de manera independiente e interactiva. Método: se utilizó una muestra de 767 participantes (47,5% chicas) con edades comprendidas entre los 12 y los 18 años de edad (edad media 15,5 años). Todas las medidas utilizadas se obtuvieron mediante instrumentos auto- administrados. Se utilizó el Kidscreen-10, iPAQ e IFIS para evaluar la CVRS, la AF y la CF, respectivamente. Se realizaron análisis de ANOVA de un factor y modelos de regresión lineal para analizar las asociaciones entre la CVRS, el estado nutricional, la AF y la CF utilizando la edad y el sexo como variables confusoras. Resultados: se ha encontrado una asociación independiente del Índice de Masa Corporal, el nivel de AF y de CF con el nivel de CVRS de adolescentes chilenos. Sin embargo, al analizar esta asociación de forma combinada y ajustada por sexo y edad tan solo el nivel de CF general se asocia de forma significativa con la CVRS. Conclusión: el nivel de CF general se asocia con la CVRS en adolescentes chilenos independientemente del sexo, la edad, el estado nutricional y el nivel de AF. La relación entre el estado nutricional y el nivel de AF semanal con la CVRS están mediadas por el sexo, la edad y el nivel de CF general.

  5. Factors associated with body image dissatisfaction among adolescents in public schools students in Salvador, Brazil.

    PubMed

    Santana, Mônica L P; Silva, Rita de Cássia R; Assis, Ana M O; Raich, Rosa M; Machado, Maria Ester P C; de J Pinto, Elizabete; de Moraes, Lia T L P; Ribeiro Júnior, Hugo da C

    2013-01-01

    Objetivo: Identificar la prevalencia de insatisfacción corporal y factores asociados entre estudiantes de Salvador en Brasil. Métodos: Estudio transversal realizado en una muestra aleatoria de 1494 adolescentes (852 niñas y 642 niños) de entre 11 y 17 años de edad estudiantes de escuelas públicas en Salvador (Brasil). Los participantes completaron los cuestionarios: Cuestionario de La Figura Corporal y el Inventario de Actitudes Alimentarias. La imagen corporal pudo ser considerada satisfactoria o insatisfactoria. Se obtuvieron datos demográficos, antropométricos y económicos e información sobre la etapa de maduración sexual, la auto-percepción del peso corporal y el consumo de bebidas azucaradas y gaseosas. Para identificar los factores asociados se utilizó el análisis de regresión de Poisson. Resultados: La insatisfacción corporal estuvo presente en el 19,5% de los/as adolescentes, con una prevalencia del 26,6% entre las chicas y el 10% entre los chicos. Independientemente del sexo, la prevalencia de la insatisfacción corporal fue superior entre los/as adolescentes con sobrepeso u obesos (en las niñas, PR: 1,38, IC: 1,09-1,73 y en los niños, PR: 2,26, IC: 1,08-4,75), mayor entre los/as que percibían a sí mismos como “gordos” (en las niñas, PR: 2,85, IC: 2,07-3,93 y en los niños, PR: 3,17, IC: 1,39- 7,23), y entre los/as que tenían actitudes alimentarias negativas (en las niñas, PR: 2,42, IC: 1,91-3,08 y en los niños, PR: 4,67, IC: 2,85-7,63). Una reducción en la insatisfacción corporal se identificó sólo entre las niñas con bajo peso (RP: 0,12, IC: 0,03-0.49).Conclusiones: Se observó una alta ocurrencia de la insatisfacción corporal entre los adolescentes, y que factores biológicos y del comportamiento se asocian con dicha insatisfacción.

  6. [Environmental heterogeneity and its relationship with diversity and abundance of the fish community in a coastal system of Gulf of Mexico].

    PubMed

    Aguirre-León, Arturo; Pérez-Ponce, Hilda Elín; Díaz-Ruiz, Silvia

    2014-03-01

    The coastal lagoons of Veracruz, Gulf of Mexico, include a great variety of biological resources. These resources, especially fish communities, have been barely described and that require more ecological studies. With this aim, this investigation analyzed the spatial and temporal variation of diversity, abundance and assemblages of the fish community and its relationship with physical-chemical parameters of the Chica-Grande coastal system. For this, eight defined sites were monthly sampled for water characteristics and fish community composition (10min hauls of 1 500m2 a shrimp trawl net), between September 2005 and November 2006. The spatial-temporal variation of physical-chemical parameters, allowed the definition of two contrasting environments according to salinity, temperature, transparency, dissolved oxygen and depth gradients. A total of 1 947 fishes were collected for a total weight of 57.88kg. From these, 22 species, 20 genera and 14 families were identified; and four species were new records for the system. As it was detected for the physical-chemical conditions, the diversity of the fish community also showed a spatial gradient, with high values (H'=2.37, D=3.35, J'=0.82) in the brackish habitat, and low ones in freshwater environments. Fish abundance did not show such a marked gradient response, however, it was higher in the freshwater habitat. The highest diversity (H'=2.05) and species richness (D=2.99) was recorded during the North winds ("nortes") months (November-February), while density and biomass were higher (0.034 ind./m2, 1.42g/m2) during the rainy months (July-October). The Importance Value Index (IVI) defined six dominant species accounting for 77.8% of the fish abundance and 87.9% of total catch by weight. The Canonical Correspondence Analysis (CCA) showed that the fish-habitat relationship was explained by 68% of total variance for the two first axes, where salinity, transparency and temperature changes were the most important

  7. Florida Keys

    NASA Technical Reports Server (NTRS)

    2002-01-01

    The Florida Keys are a chain of islands, islets and reefs extending from Virginia Key to the Dry Tortugas for about 309 kilometers (192 miles). The keys are chiefly limestone and coral formations. The larger islands of the group are Key West (with its airport), Key Largo, Sugarloaf Key, and Boca Chica Key. A causeway extends from the mainland to Key West.

    This image was acquired on October 28, 2001, by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER images Earth to map and monitor the changing surface of our planet.

    ASTER is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of Economy, Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products.

    The broad spectral coverage and high spectral resolution of ASTER will provide scientists in numerous disciplines with critical information for surface mapping, and monitoring of dynamic conditions and temporal change. Example applications are: monitoring glacial advances and retreats; monitoring potentially active volcanoes; identifying crop stress; determining cloud morphology and physical properties; wetlands evaluation; thermal pollution monitoring; coral reef degradation; surface temperature mapping of soils and geology; and measuring surface heat balance.

    Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, Calif., is the U.S. Science team leader; Bjorn Eng of JPL is the project manager. The Terra mission is part of NASA's Earth Science Enterprise, a long- term research effort to understand and protect our home planet. Through the study of Earth, NASA will help to provide sound science to policy and economic

  8. 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.

  9. Characterization of the interface between gamma and epsilon subunits of Escherichia coli F1-ATPase.

    PubMed

    Tang, C; Capaldi, R A

    1996-02-09

    The interaction faces of the gamma and epsilon subunits in the Escherichia coli F1-ATPase have been explored by a combination of cross-linking and chemical modification experiments using several mutant epsilon subunits as follows: epsilonS10C, epsilonH38C, epsilonT43C, epsilonS65C, epsilonS108C, and epsilonM138C, along with a mutant of the gamma subunit, gammaT106C. The replacement of Ser-10 by a Cys or Met-138 by a Cys reduced the inhibition of ECF1 by the epsilon subunit, while the mutation S65C increased this inhibitory effect. Modification of the Cys at position 10 with N-ethylmaleimide or fluoroscein maleimide further reduced the binding affinity of, and the maximal inhibition by, the epsilon subunit. Similar chemical modification of the Cys at position 43 of the epsilon subunit (in the mutant epsilonT43C) and a Cys at position 106 of the gamma subunit (gammaT106C) also affected the inhibition of ECF1 by the epsilon subunit. The various epsilon subunit mutants were reacted with TFPAM3, and the site(s) of cross-linking within the ECF1 complex was determined. Previous studies have shown cross-linking from the Cys at positions 10 and 38 with the gamma subunit and from a Cys at position 108 to an alpha subunit (Aggeler, R., Chicas-Cruz, K., Cai, S. X., Keana, J. F. W., and Capaldi, R. A. (1992) Biochemistry 31, 2956-2961; Aggeler, R., Weinreich, F., and Capaldi, R. A. (1995) Biochim. Biophys. Acta 1230, 62-68). Here, cross-linking was found from a Cys at position 43 to the gamma subunit and from the Cys at position 138 to a beta subunit. The site of cross-linking from Cys-10 of epsilon to the gamma subunit was localized by peptide mapping to a region of the gamma subunit between residues 222 and 242. Cross-linking from a Cys at position 38 and at position 43 was with the C-terminal part of the gamma subunit, between residues 202 and 286. ECF1 treated with trypsin at pH 7.0 still binds purified epsilon subunit, while enzyme treated with the protease at pH 8.0 does

  10. Prevalence of -alpha(3.7) and alpha alpha alpha(anti3.7) alleles in sickle cell trait and beta-thalassemia patients in Mexico.

    PubMed

    Nava, María Paulina; Ibarra, Bertha; Magaña, María Teresa; de la Luz Chávez, María; Perea, F Javier

    2006-01-01

    The aim of this study was to determine the frequency of alpha-globin gene mutations in three groups of Mexican unrelated individuals. The first two groups were normal and sickle cell trait individuals from the Costa Chica region, a place with a 12.8% frequency of HbS carriers, and the third group comprised of Mexican mestizo patients with beta-thalassemia. We searched for -alpha(3.7) and -alpha(4.2) alpha(+)-thalassemia deletion alleles, as well as the alpha alpha alpha(anti3.7) triplication through long-gap PCR. The alleles -alpha(3.7) and alpha alpha alpha(anti3.7) were found in the heterozygote state only; 19% of the normal subjects had the -alpha(3.7) allele, and 2% showed the alpha alpha alpha(anti3.7) allele. In individuals with the sickle cell trait, 17% had the -alpha(3.7) deletion, and the alpha alpha alpha(anti3.7) triplication was observed in 3% of these individuals. We revealed that 16% of the subjects with beta-thalassemia showed the -alpha(3.7) deletion and 28% the alpha alpha alpha(anti3.7) triplication. The -alpha(4.2) deletion was not detected in any individual. The frequency of the -alpha(3.7) allele was roughly the same in the three groups studied; this can be explained by the fact that the three groups have common genes from Africa and the Mediterranean, where a high prevalence of alpha(+)-thalassemia has been observed. To our knowledge, the frequency of alpha alpha alpha(anti3.7) triplication observed in the Mexican beta-thalassemia patients is the highest reported. As the -alpha(3.7) and alpha alpha alpha(anti3.7) alleles are very common in our selected populations, we believe that there is a need to investigate systematically the alpha-globin gene mutations in all hemoglobinopathies in the Mexican population.

  11. Biomonitoring of persistent organic pollutants (POPs) in child populations living near contaminated sites in Mexico.

    PubMed

    Flores-Ramírez, R; Pérez-Vázquez, F J; Rodríguez-Aguilar, M; Medellín-Garibay, S E; Van Brussel, E; Cubillas-Tejeda, A C; Carrizales-Yáñez, L; Díaz-Barriga, F

    2017-02-01

    The aim of this study was to conduct a POP biomonitoring programme for children in high-risk areas. We evaluated 247 serum samples from children between the ages of 6 and 12years old from two zones in Mexico: (1) indigenous zones, which included Cuatlamayan (CUA), Tocoy (TOC), and Santa Maria Picula (SAM); and (2) industrial zones, which included Tercera Chica (TC), Industrial San Luis (IND) and Rincon de San Jose (SJR); Mundo Nuevo (MN); and Alpuyeca (ALP). Our results showed that α-endosulfan was similar to CUA, TOC, SAM, TC and MN (178.6-306.9ng/g lipid). β-Endosulfan levels were higher in ALP (901.5ng/g lipid), followed by CUA (139.9ng/g lipid) and TOC, SAM, TC and MN, which had similar levels (55.4-64.5ng/g lipid). For endosulfan sulfate, the ALP community had the highest concentration levels (1096.4ng/g lipid), whereas CUA and TOC (212.3 and 289ng/g lipid, respectively) had concentrations similar to those found in SAM and TC (99.5 and 119.1ng/g lipid, respectively). DDE levels were found in malaria-endemic areas of SAM, CUA and TOC (1782.2, 1358.3 and 57.0ng/g lipid), followed by MN (35.1ng/g lipid). HCB concentration levels were found to be higher in MN and SJR (691.8 and 575.4ng/g lipid, respectively), followed by CUA and TC (363.9 and 269.1ng/g lipid, respectively), with levels similar to those found in TOC and SAM (191.8 and 181.9ng/g lipid, respectively). Finally, PCB 101 concentration levels were found to be the highest in ALP (1032.7ng/g lipid), followed by similar levels of SJR and IND (567.5 and 327.3ng/g lipid, respectively) and TC and MN, with 109.1 and 144.5ng/g lipid, respectively. The evidence provided by this exploratory study indicates that the evaluation of the health risks posed to children living in contaminated areas is a high priority health issue.

  12. [Influence of body composition and acceptance of physical education classes on self-esteem of children aged 14-16 years from Alicante, Spain].

    PubMed

    Estévez, Manuel; Muros, José Joaquín; Torres, Beatriz; Pradas, Francisco; Zurita, Félix; Cepero, Mar

    2015-04-01

    Introducción: La autoestima parece ser un importante predictor de síntomas depresivos entre los jóvenes, y sobre todo en el género femenino. Algunos autores sugieren que la existencia de sobrepeso y/o obesidad en jóvenes se relaciona con una menor autoestima así como la participación deportiva se ha asociado con unos valores más altos de la misma. Objetivos: Analizar las relaciones existentes entre el índice de masa corporal, sexo, aceptación a las clases de Educación Física y autoestima en una muestra representativa de escolares de 3º y 4º de Educación Secundaria Obligatoria de la ciudad de Alicante. Métodos: El estudio se llevó a cabo sobre una muestra representativa compuesta por 1.150 alumnos escolarizados en la ciudad de Alicante. Se obtuvieron datos sociodemográficos, antropométricos, valores de autoestima y de aceptación por las clases de educación física. Resultados: Existe una correlación positiva entre la aceptación a las clases de educación física y el autoestima (r= ,319) y una correlación negativa entre esta y el sexo de los alumnos (r= -,289), siendo el grupo femenino el que muestra unas menores puntuaciones. Existe una correlación negativa entre el autoestima y los valores de índice de masa corporal (r= -,083), y el sexo (r= -,308), siendo el grupo femenino el que muestra unos valores menores de autoestima. Conclusiones: En vista de los resultados se hace necesario planificar actuaciones encaminadas a reforzar y aumentar la autoestima durante la adolescencia, centrándose en los grupos de riesgo formados por los jóvenes con sobrepeso/obesidad y sobre por el grupo de las chicas.

  13. The Search for a Paleotsunami Record in the Coastal Wetlands of Southern California: A Progress Report

    NASA Astrophysics Data System (ADS)

    Leeper, R. J.; Rhodes, B. P.; Kirby, M. E.

    2013-12-01

    samples from this layer at LPM yielded C-14 dates of 1795, 1835, and 1895 cal yrs BP (not corrected for the marine reservoir). Future work will involve additional coring at LPM and SBW to delineate the extent of the fossil hash layers, and new work at Bolsa Chica Marsh, south of SBW to help delineate the extent of subsidence and its relation to the Newport-Inglewood fault zone.

  14. [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.

  15. Stratigraphy, Structure, and Geologic and Coastal Hazards in the Peñuelas to Salinas Area, Southern Puerto Rico: A Compendium of Published Literature

    USGS Publications Warehouse

    Rodríguez-Martínez, Jesús

    2007-01-01

    per square mile, which is close to the average for southwestern Puerto Rico. The estimated maximum peak ground acceleration most likely to occur in the study area, due to shallow depth seismicity with 2 percent probability of exceedance in 50 years, is 9 feet per second squared, as obtained by modeling results. The estimated peak ground acceleration with 2 percent probability of exceedance in 50 years, due to deep seismicity is 7 feet per second squared. In Ponce, the probability of exceedance per year is higher than 0.1 for the peak ground acceleration values less than 1 that result from shallow depth seismicity sources such as the Mona Passage extension zone. The potential for liquefaction due to seismic activity may exist in areas near the coastline that have loosely to poorly consolidated sedimentary deposits and a water table close to or at the land surface. Slope failure susceptibility within the study area, due to rainfall and seismic activity, may be limited to the area that extends westward from Laguna de las Salinas to Pe?uelas. In this area, foothills with slopes exceeding 10 degrees are close to the coastline and are underlain by clayey limestone and marls. In the remaining part of the study area, eastward from Laguna de las Salinas to Salinas, the land is either nearly flat or has a slope of less than 10 degrees; consequently, the susceptibility to landsliding (slope failure) caused by seismic activity and rainfall is considered to be minimal or nonexistent. Based on modeling results from a previous study, the estimated maximum inland extent of tsunami-induced flooding is 2,600 feet in the Laguna de las Salinas and Boca Chica, located in Ponce and Juana Diaz, respectively. Flooding about 3,000 and 2,800 feet from the coastline are estimated for areas near Punta Cabullon and Jobos areas, respectively. According to the modeling results, the estimated maximum runup of the tsunami-induced flooding ranges from 9 to 14 feet for the Boca Chica and Pu

  16. Early Cretaceous continental sedimentation in the Coastal Cordillera (Atajaña Formation), Northern Chile

    NASA Astrophysics Data System (ADS)

    Fuentes, G.; Garcia, M.; Sepulveda, F.; Vasquez, P.

    2013-12-01

    . Locally, unit Kia2 contains andesite lava flows interbedded (Kia2a) exposed in Chiza valley, south of Caleta Chica and southwestern of Atajaña hill. The age of the Atajaña Formation, near to Atajaña hill, obtained from relationship contacts with the Blanco Formation, is Berriasian to Aptian. Besides, two new ages zircon U-Pb of 105.8×1.3 Ma and 107 Ma (best average between four population ages) obtained on the overlying rhyodacitic tuffs (Suca Formation), in the Chiza and Camarones valleys respectively. These data allow place the Atajaña Formation in the Lower Cretaceous (Barresian-Albian). This indicate a northward extension of continental sedimentation until Albian times, as well as a Blanco Formation wedging in the same direction. Southward, the Atajaña Formation can be stratigraphically correlated with Punta Barranco Formation, close to Iquique (20°S), and chrono-stratigraphically with Caleta Coloso Formation, near to Antofagasta (24°S). According to the facies descriptions, the Atajaña Formation corresponds to a succession accumulated in alluvial, fluvial and locally lacustrine continental environment. South to the Atajaña hill, marine incursion is evidenced by the Blanco Formation during Aptian-Albian times. Northward (Chiza valley), continental sedimentation would have continued, in a volcanic environment, until Albian times.

  17. Parent-child conflict and psychological maladjustment: a mediational analysis with reciprocal filial belief and perceived threat.

    PubMed

    Yeh, Kuang-Hui; Tsao, Wei-Chun; Chen, Wei-Wen

    2010-04-01

    mayor inadaptación, sobre todo interiorizada. La muestra consistió de 603 adolescentes taiwaneses (226 chicos y 377 chicas) entre 15 y 19 años de edad (media edad = 16.95; DT = 0.78). Los análisis de los modelos de ecuaciones estructurales confirmaron las hipótesis. Sin embargo, los tres efectos directos de los conflictos en la internalización de los problemas, agresión y comportamiento anormal seguían siendo significativos. Además, se identificó un efecto mayor del rol paternal en comparación con el rol maternal en la relación entre conflicto y la creencia filial reciproca atenuada y entre la amenaza percibida y la internalización de los problemas. Se discuten las implicaciones para la comprensión del proceso mediador responsable de todos los efectos indirectos, incluso los subsidiarios, y el mayor impacto del conflicto con los padres que con las madres. Igualmente, se discuten las limitaciones del estudio y las consideraciones para la investigación futura.