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31.
Silva Marcio Roberto Ferreira Fernando César Maranhão Adriana Gonçalves Lanzarini Natália Maria de Carvalho Castro Karina Neboo Miagostovich Marize Pereira 《Food and environmental virology》2021,13(4):528-534
Food and Environmental Virology - Enteric viruses have been described as important contaminants in fresh and ready-to-eat foods such as sandwiches, deli meat and dairy products. This is a... 相似文献
32.
33.
Hapry F. N. Lapian Marco Barucca Giorgio Bavestrello Maria A. Biscotti Marzia Bo Adriana Canapa Silvia Tazioli Ettore Olmo 《Marine Biology》2007,151(2):785-792
A phylogenetic analysis based on rDNA internal transcribed spacers (ITS) sequences was performed on 15 species of black corals assigned to the genera Antipathes, Stichopathes, Cirrhipathes, Rhipidipathes, Antipathella, Myriopathes and Cupressopathes recorded from the Messina Strait (Mediterranean Sea) and the Bunaken Marine Park (Celebes Sea, Indonesia). The phylogenetic analysis shows that the examined species are grouped in two main branches corresponding to the families Antipathidae-Aphanipathidae and Myriopathidae. While among the Myriopathidae species there is a very small genetic distance, the Antipathidae-Aphanipathidae clade shows a high degree of divergence between different genera. According to this study, the taxon Antipathes? sp. 3 characterised by a bush-like corallum without a well-defined axis, probably belongs to a new undescribed genus of the family Antipathidae. 相似文献
34.
Moon DH Dermatas D Wazne M Sanchez AM Chrysochoou M Grubb DG 《Environmental geochemistry and health》2007,29(4):289-294
Several million tons of Chromite Ore Processing Residue (COPR) were deposited at two sites in New Jersey and Maryland, USA,
and over time they exhibited extensive heaving phenomena. Ettringite, a needle-shaped mineral and an expansive mineral commonly
recognized in the literature concerning cement- and soil, has been identified extensively in numerous COPR samples collected
from these sites. It was therefore believed that ettringite formation and its crystal growth are strongly associated with
COPR heaving. We investigated the correlation between ettringite and the heaving phenomena in COPR materials that contained
no initial ettringite. Two identical COPR samples were exposed to a 4% w/w sulfate solution (25°C, 50°C) in a confined swell
test apparatus. Both swell test samples were analyzed by means of X-ray powder diffraction. The peak intensities of newly
formed ettringite were more pronounced in the sample tested at 50°C, and swell development was only observed in this sample.
Scanning electron microscopy analyses revealed well-crystallized ettringite needles exceeding 40 μm in length for this sample,
while ettringite crystals less than 15 μm in length formed in the sample tested at 25°C. Therefore, the results suggest that
the quantity of ettringite and the extent of crystallization play a key role in the heave of COPR. 相似文献
35.
Hugh?DrummondEmail author Cristina?Rodríguez Adriana?Vallarino Claudia?Valderrábano Gabriela?Rogel Emilio?Tobón 《Behavioral ecology and sociobiology》2003,53(5):287-296
According to the desperado sibling hypothesis, chicks of obligately siblicidal species kill their junior broodmates as early as possible because junior broodmates face dire ecological prospects and are consequently predisposed to aggressively overthrow elder broodmates by all-out aggression. The agonistic behavior of junior chicks is virtually unknown because they die so young. We investigated the agonistic behavior of hypothetical desperados by fostering junior brown boobies (Sula leucogaster, an obligately siblicidal species) into nests of the blue-footed booby (S. nebouxii, a facultatively siblicidal species) containing an older singleton blue-foot chick. Controls were junior blue-footed boobies fostered into the same situation. Junior brown boobies were 7 times more aggressive than controls and most of them dominated their elder and larger nestmates. Four of nine brown booby juniors showed relentless aggression, delivering up to 711 pecks, bites and pushes (including "expulsion pushes") per hour, thereby overwhelming nestmates 90% heavier and permanently expelling one of them from the nest. Similarly, in natural broods of two surviving brown booby chicks, the losing chick was 13 times as aggressive as blue-foot subordinates, up to at least age 7 weeks. Contrast of the two species of booby suggests the evolution of agonistic roles within broods may be partly driven by selection on potential victims to express a level and type of aggressiveness appropriate to their status-related ecological prospects. 相似文献
36.
Adriana María Albino Bruce Rothschild Jorge D. Carrillo-Briceño James M. Neenan 《Die Naturwissenschaften》2018,105(9-10):51
Inflammatory arthritis is documented for the first time in snakes. Ossification of the intervertebral capsule and zygapophyseal joints resulting in segmental vertebral fusion was observed in the aquatic Cretaceous snake Lunaophis aquaticus. Such pathologic alterations are pathognomonic for the spondyloarthropathy form of inflammatory arthritis. A survey of 2144 snakes in recent collections, performed to identify Holocene prevalence, revealed only two occurrences in extant snakes. The findings in Bitis gabonica and Elaphe taeniura were indistinguishable from those noted in Lunaophis aquaticus and identical to those previously recognized in modern varanids. The pathology likely represents a form of reactive arthritis related to enteropathic infection. While the disease probably did not affect general locomotion, its vertebral column position may have compromised mating. 相似文献
37.
Inés Ahumada Orianne Gudenschwager M. Adriana Carrasco Gabriela Castillo Loreto Ascar Pablo Richter 《Journal of environmental management》2009
The purpose of this study was assessing Cu and Zn availabilities in soils amended with a biosolid through the determination of their sequentially extracted chemical forms and their relationship with the contents of these metals in ryegrass (Lolium perenne L.) and subterranean clover (Trifolium subterraneum L.) plant tissues cultivated in a greenhouse using four soils classified as Aquic Xerochrepts and Ultic Haploxeralfs representatives of potential areas for biosolids application in the central zone of Chile. The soils were treated with sewage sludge at a rate of 0 and 30 Mg ha−1. The greenhouse experiment was carried out through a completely randomized block design in a 2 × 4 (biosolid rate × soil) arrangement, considering three repetitions per treatment. The soils used in the greenhouse experiment before and after cultivation, were sequentially extracted with specific reagents and conditions in order to obtain the following fractions: exchangeable, sodium acetate-soluble, soluble in moderately reducing condition, K4P2O7-soluble, soluble in reducing condition, and soluble in strongly acid and oxidizing condition. It was established that Cu and Zn were predominantly found in soils in less available forms, associated to organic matter, oxides and clay minerals. Zinc concentration in ryegrass plants was higher than that found in subterranean clover plants in biosolid-amended soils. Zinc contents in ryegrass shoot and root correlated with the exchangeable, bound-to-carbonate, and bound-to-FeOx metal forms in control soil. Copper and Zn bioavailabilities were estimated through satisfactorily fitted multiple linear regression models, with determination coefficients from 0.77 to 0.99, which showed a positive contribution of the labile metal forms in soils, especially in relation to Zn in both plant species. 相似文献
38.
Lourenço Rafael André de Oliveira Fábio Francisco de Souza João Maximino Nudi Adriana Haddad de Luca Rebello Wagener Ângela de Fátima Guadalupe Meniconi Maria Francioni Eleine 《Environmental science and pollution research international》2016,23(17):17113-17122
Environmental Science and Pollution Research - The Potiguar Basin has oil and gas production fields offshore and onshore. All treated produced water (PW) from these fields is discharged through... 相似文献
39.
Adriana Gregorova Vladimir Sedlarik Miroslav Pastorek Hari Jachandra Franz Stelzer 《Journal of Polymers and the Environment》2011,19(2):372-381
This article contains a concept of the mechanical properties improvement of the highly crystalline poly(lactic acid) (PLA)
and filled composites. PLA as a semi-crystalline thermoplastic polymer was plasticized with poly(ethylene glycol) and filled
with 30 vol% of organic and/or inorganic filler. The degree of crytallinity was intentionally increased by annealing. The
filler/polymer matrix interphase was modified with the addition of 4, 4′-Methylenediphenyl diisocyanate (MDI). The effect
of compatibilizing as well as plasticizing agent on the thermal and mechanical properties, the water-absorption behaviour
and crystallization characteristics were studied. The results indicated that high content of filler and crystallites have
a strong influence on the composite′s mechanical properties despite of the plasticizer content, showing a high Young modulus.
The MDI seems to react in preference easy with plasticizing agent and then alternatively with filler due to the low functionality
of commercial PLA grade. 相似文献
40.
Arguing Tropical Forest Conservation: People versus Parks 总被引:2,自引:0,他引:2
Stephan Schwartzman Daniel Nepstad † and Adriana Moreira† 《Conservation biology》2000,14(5):1370-1374