1,325 research outputs found

    Linalol, principal componente químico dos óleos essenciais da folha da sacaca (Croton cajucara Benth) e da madeira do pau-rosa (Aniba duckei Kostermans).

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    Verificação, de forma exploratória, dos efeitos de nutrientes químicos e orgânicos no rendimento em óleo e no teor de linalol de sacaca cultivada na área experimental da Embrapa Amazônia Ocidental (Manaus-AM).bitstream/CPAA-2009-09/2734/1/Com_Tec_15.pd

    Earthquakes in central Italy in 2016: comparison between Norcia and Amatrice

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    Trabalho apresentado em 16th European Conference on Earthquake Engineering (16ECEE), 18-21 june 2018, Thessaloniki, GreeceIn this paper lessons are extracted from the comparison between the very different consequences that a set of earthquakes had on the neighbouring towns of Amatrice and Norcia during the 2016 central Italy earthquake sequence. The paper initially describes the prevention programs implemented in Amatrice and Norcia starting from the reconstruction after the 1860 Norcia earthquake. The earthquake intensities in Amatrice and Norcia during the 2016 Central Italy events were considering accelerometric recordings of the Italian Strong Motion Network. In the same municipalities, the damage has been assessed through site visits and analysis of the results of the post-earthquake safety assessment performed after the events. It was found that the differences in damage were essentially due to the strengthening of most houses in Norcia done during the previous decades. This is also likely to lead to a much faster recover of the economy and livelihood in Norcia, as Amatrice needs to be entirely rebuilt.N/

    Effect of maternal heat-stress on follicular growth and oocyte competence in Bos indicus cattle.

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    The objective was to determine whether exposure of Gir (Bos indicus) cows to heat-stress (HS) causes immediate and delayed deleterious effect on follicular dynamics, hormonal profile and oocyte competence. The cows were kept in tie-stalls for an adaptive thermoneutral period of 28 days (Phase I, Days −28 to −1). In Phase II (Days 0–28) cows were randomly allocated into control (CG, n = 5) and HS (HS, n = 5) treatments. The HS cows were placed in an environmental chamber at 38 °C and 80% relative humidity (RH) during the day and 30 °C, 80% RH during the night for 28 days. The CG group was maintained in shaded tie-stalls (ambient temperature) for 28 days. During Phase III (Days 28–147) animals were placed in tie-stalls (Days 28–42) followed by pasture (Days 42–147) under thermoneutrality. In each phase, weekly ovum pick up (OPU) sessions were to evaluate follicular development, morphology of cumulus–oocyte complexes (COCs), and developmental competence after in vitro maturation, fertilization, and culture. Serum concentrations of progesterone (P4) and cortisol were evaluated by radioimmunoassay. Exposure of Gir cows to HS had no immediate effect on reproductive function, but exerted a delayed deleterious effect on ovarian follicular growth, hormone concentrations, and oocyte competence. Heat-stress increased the diameter of the first and second largest follicles from Days 28 to 49. Indeed, HS increased the number of >9 mm follicles (characterized as follicular codominance) during this phase. Cows exposed to HS had longer periods of non-cyclic activity (P4 < 1 ng/mL), as well as shorter estrous cycles. However, HS did not affect cortisol concentration as compared to CG. Although HS had no significant effect on cleavage rate, it reduced blastocyst development during Phase III. In conclusion, long-term exposure of B. indicus cattle to HS had a delayed deleterious effect on ovarian follicular dynamics and oocyte competence

    Biodiversity of natural enemies of Pseudococcidae in the Semiarid region of Brazil.

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    Pseudococcidae species, also known as mealybugs, comprises a complex of pests in various cultivated and non-cultivated plant species, among which fruit plants are most affected by both direct and indirect damage. The incidence of these pest species has been constant in productive environments, causing significant losses due to sap suction, virus transmission, and damage to fruit quality. Thus, this study aimed to know and investigate the population dynamics of natural enemies of Pseudococcidae in different fruit plants cultivated in the semiarid region of Brazil. For this, mealybugs associated with roots, stems, leaves, and fruits of vine, pear, apple, persimmon, guava, and acerola trees were collected biweekly in 14 properties in the São Francisco Valley region, from July 2016 to June 2017. These mealybugs were properly separated for the removal of their predators and the emergence of parasitoids associated with them (Pseudococcidae). Coccophagus sp., Aenasius sp., Anagyrus kamali, Anagyrus sp. 1, Anagyrus sp. 2, Anagyrus sp. 3, Anagyrus sp. 4, Coccidoxenoides perminutus, Gyranusoidea indica, Leptomastix dactylopii, Prochiloneurus sp., Aprostocetus sp., and Signiphora sp. were identified as parasitoids and Diadiplosis multifila, Cryptolaemus montrouzieri, Tenuisvalvae notata, Cycloneda sanguinea, and Hippodamia convergens were identified as predators, in addition to unidentified species of Coccinellidae and Chrysopidae

    Avaliação de famílias de meios irmãos no milho composto jatinã C3.

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    Este trabalho, portanto, objetiva a obtenção de genotipos adequados para condições irrigadas, que permitam adensamento de plantio e mecanização da cultura

    Functional Electrical Stimulation Improves Brain Perfusion In Cranial Trauma Patients.

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    Demonstrate brain perfusion changes due to neuronal activation after functional electrical stimulation (FES). It was studied 14 patients with hemiplegia who were submitted to a program with FES during fourteen weeks. Brain perfusion SPECT was performed before and after FES therapy. These patients were further separated into 2 groups according to the hemiplegia cause: cranial trauma and major vascular insults. All SPECT images were analyzed using SPM. There was a significant statistical difference between the two groups related to patient's ages and extent of hypoperfusion in the SPECT. Patients with cranial trauma had a reduction in the hypoperfused area and patients with major vascular insult had an increase in the hypoperfused area after FES therapy. FES therapy can result in brain perfusion improvement in patients with brain lesions due to cranial trauma but probably not in patients with major vascular insults with large infarct area.69682-

    Acute Capsaicin Analog Supplementation Improves 400 M and 3000 M Running Time-Trial Performance

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    International Journal of Exercise Science 13(2): 755-765, 2020. Objectives: Performance in running-based sport depends on the ability to perform repetitive high intensity muscle contractions. Previous studies have shown that capsaicin analog (CAP) (i.e. Capsiate) supplementation may improve this performance. The purpose of this study was to investigate the acute effect of CAP supplementation on short (400 m) and middle distance (3000 m) running time-trial performance, maximum heart rate (HR), and rate of perceived exertion (RPE). Methods: Twelve physically active men completed four randomized, double-blind trials: CAP condition (12 mg) or a placebo condition. Forty-five minutes after supplementation, the participants performed a 400- or 3000-meter running time trial. Time (in seconds) was recorded. HR was analyzed at rest and immediately post-exercise, and RPE was collected immediately after exercise. Results: For both the 400 m time-trial (CAP = 66.4 + 4.2 sec vs Placebo = 67.1 + 4.8 sec, p = 0.046) and the 3000 m time-trial (CAP = 893.9 ± 46.8 sec vs Placebo = 915.2 ± 67.6 sec, p = 0.015), the time in seconds was significantly less in the CAP compared to placebo conditions. There were no statistically significant differences for HR and RPE in any condition. Conclusion: In summary, acute CAP supplementation improved 400 m and 3000 m running time-trial performance in a distance-dependent way but without modifying the HR and RPE

    Seleção de primers ISSR para caracterização molecular de acessos de Aannona squamosa.

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    No presente estudo, o objetivo foi selecionar primers ISSR adequados a estudos genéticos de acessos de pinha que compõem o Banco Ativo de Germoplasma de Fruteiras da Embrapa Meio-Norte
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