413 research outputs found

    Dynamic Characteristics of Woodframe Buildings

    Get PDF
    The dynamic properties of wood shearwall buildings were evaluated, such as modal frequencies, damping and mode shapes of the structures. Through analysis of recorded earthquake response and by forced vibration testing, a database of periods and damping ratios of woodframe buildings was developed. Modal identification was performed on strong-motion records obtained from five buildings, and forced vibration tests were performed on a two-story house and a three-story apartment building, among others. A regression analysis is performed on the database to obtain a period formula specific for woodframe buildings. It should be noted that all test results, including the seismic data, are at small drift ratios (less than 0.1%), and the periods would be significantly longer for stronger shaking of these structures. Despite these low amplitudes, the equivalent viscous dampings for the fundamental modes were usually more than 10% of critical during earthquake shaking

    Produção inicial de frutos num plantio de açaí em Porto Velho, Rondônia.

    Get PDF
    O objetivo deste estudo foi avaliar a produção inicial de frutos entre de um plantio de açaí BRS Pará em Rondônia

    Neonatal Near Miss: A Systematic Review.

    Get PDF
    The concept of neonatal near miss has been proposed as a tool for assessment of quality of care in neonates who suffered any life-threatening condition. However, there are no internationally agreed concepts or criteria for defining or identifying neonatal near miss. The purpose of this study was to perform a systematic review of studies and markers that are able to identify neonatal near miss cases and predict neonatal mortality. Electronic searches were performed in the Medline, Embase and Scielo databases, with no time or language restriction, until December 2014. The term neonatal near miss was used alone or in combination with terms related to neonatal morbidity/mortality and neonatal severity scores. Study selection criteria involved three steps: title, abstract and full text of the articles. Two researchers performed study selection and data extraction independently. Heterogeneity of study results did not permit the performance of meta-analysis. Following the inclusion and exclusion criteria adopted, only four articles were selected. Preterm and perinatal asphyxia were used as near miss markers in all studies. Health indicators on neonatal morbidity and mortality were extracted or estimated. The neonatal near miss rate was 2.6 to 8 times higher than the neonatal mortality rate. Pragmatic and management criteria are used to help develop the neonatal near miss concept. The most severe cases are identified and mortality is predicted with these criteria. Furthermore, the near miss concept can be used as a tool for evaluating neonatal care. It is the first step in building management strategies to reduce mortality and long-term sequelae.1532

    Proposta para avaliação do efeito da inoculação de bactérias diazotróficas em variedades de Pennisetum para fins energéticos.

    Get PDF
    Este trabalho tem por objeto avaliar o efeito da inoculação das estirpes LP343 e SP245 em duas variedades de capim elefante: PCEA (desenvolvida pelo CNPGL) e o híbrido Paraíso (Pennisetum purpureum Schum. x Pennisetum glaucum L

    Seasonal patterns of capture of Helicoverpa zea (Boddie) and Heliothis phloxiphaga (Grote and Robinson) (Lepidoptera: Noctuidae) in pheromone traps in Washington State

    Get PDF
    In each of the 6 years of this study in south central Washington state, male corn earworm moths, Helicoverpa zea (Boddie), first appeared in pheromone traps in late May to mid June, and thereafter were present nearly continuously until mid to late October. Maximum numbers of male corn earworm moths captured in pheromone traps occurred in August and early September. Male  Heliothis phloxiphaga (Grote and Robinson) moths first appeared in traps baited with corn earworm pheromone and conspecific pheromone in April, and were generally present throughout the season until mid to late September. In some years, two peaks of trap capture of H. phloxiphaga males was suggestive of two generations per season, with one flight in April and May and the other in July and August.  Although both species were caught primarily in traps baited with their appropriate conspecific pheromone, smaller numbers of both species were captured in traps baited with the heterospecific pheromone.  Heliothis phloxiphaga captured in corn earworm pheromone traps can be misidentified as corn earworm, resulting in false positives for corn earworm in commercial sweet corn or overestimates of corn earworm populations

    Seasonal patterns of capture of Helicoverpa zea (Boddie) and Heliothis phloxiphaga (Grote and Robinson) (Lepidoptera: Noctuidae) in pheromone traps in Washington State

    Get PDF
    In each of the 6 years of this study in south central Washington state, male corn earworm moths, Helicoverpa zea (Boddie), first appeared in pheromone traps in late May to mid June, and thereafter were present nearly continuously until mid to late October. Maximum numbers of male corn earworm moths captured in pheromone traps occurred in August and early September. Male  Heliothis phloxiphaga (Grote and Robinson) moths first appeared in traps baited with corn earworm pheromone and conspecific pheromone in April, and were generally present throughout the season until mid to late September. In some years, two peaks of trap capture of H. phloxiphaga males was suggestive of two generations per season, with one flight in April and May and the other in July and August.  Although both species were caught primarily in traps baited with their appropriate conspecific pheromone, smaller numbers of both species were captured in traps baited with the heterospecific pheromone.  Heliothis phloxiphaga captured in corn earworm pheromone traps can be misidentified as corn earworm, resulting in false positives for corn earworm in commercial sweet corn or overestimates of corn earworm populations
    corecore