OALib Journal期刊

ISSN: 2333-9721



匹配条件: “Edison;” ,找到相关结果约760条。
Jurnal Teknologi dan Industri Pangan , 2000,
Abstract: Volatile compounds of fresh water catfish (Pangasius sutchi) cultured in pond and cage were extracted by micro simultaneous distillation-solvent extraction (SDE), and analyzed by gas chromatography/mass spectrometry (GC/MS). A total of 28 volatile compounds of Pangastius sutchi were detected. Of these compounds, twelve were identified as aromatics, aldehyde and miscellaneous coumpounds. Catfish cultured in pond contained higher levels of the aromatic compunds as compared to thase raised in cage.
Concealed Environmental Threat in the Coastal Region Requires Persistent Attention: The Panglao Island, Philippines Example  [PDF]
Daniel Edison Husana, Tomohiko Kikuchi
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.410131

Panglao is a small island in the central part of the Philippines and well-known for its world-class beaches and coral reefs. These attract millions of tourists each year thus providing business opportunities and employment, a significant source of revenue for the local economy. Moreover, this island lies in a region with high biodiversity. However, the escalating activity is so alarming that the negative effect to the local environment is very much prevalent but not easily perceivable. Analysis and measurement of physico-chemical parameters of the groundwater revealed high levels of human-induced contaminants. This subterranean pollution was attributable to the leakage of septic tanks, artificial application of disinfectants as well as infiltration of saltwater from the ocean due to over-extraction of groundwater in order to meet the increasing demand for water. The community within the area was oblivious because human impacts to the environment appear to be virtually absent. These findings clearly suggest the concealed vulnerability of the groundwater resources from human activities. Higher standard for the coastal development plan, strong implementation of environmental policy and immediate government action is deemed necessary.

Autosomal rearrangement in Gryllus assimilis Fabricius, 1775 (Orthoptera, Gryllidae)
Zefa, Edison;
Genetics and Molecular Biology , 1999, DOI: 10.1590/S1415-47571999000300008
Abstract: gryllus assimilis l. has a karyotype of 2n = 29 (x0, male) and 30 (xx, female). the above karyotype was encountered along with another in which 2n = 28 (x0, male) and 2n = 29 (xx, female) in a population from the outskirts of rio claro city (s?o paulo state, brazil). of eight specimens studied, five had the heterozygous karyotype involving a translocation and three had the basic karyotype. there were no individuals homozygous for the rearrangement. the heterozygous karyotype was the result of a chromosomal rearrangement between chromosome pairs 6 and 10, both of which were initially submetacentric. the members of the sixth pair normally have two constrictions in the small arm, with a satellite at the chromosome tip. the chromosome of the tenth pair involved in the translocation was generally submetacentric and probably underwent a pericentric inversion which transported the centromere to a subterminal position before being translocated. in this case, the long arm of the inverted chromosome of the tenth pair was translocated with the satellite of a member of the sixth pair.
Comparison of calling songs in three allopatric populations of Endecous itatibensis (Orthoptera, Phalangopsinae)
Zefa, Edison;
Iheringia. Série Zoologia , 2006, DOI: 10.1590/S0073-47212006000100002
Abstract: three isolated populations of the cricket endecous itatibensis rehn, 1918 had been analyzed to test the hypothesis of divergence in the calling song estridulation and to discuss its implications in the speciation process. the song registers were obtained from specimens in corumbataí, piraciacaba and itatiba cities, state of s?o paulo, brazil. in the three analyzed populations, calling songs are composed by pairs of notes. specimens from corumbataí emit composed phrases with 3 to 18 pairs of notes, while those of piracicaba and itatiba have 1 to 3 pairs of notes. inter- and intrapopulational variability in the frequencies of acoustic signals were detected. while recording the calling songs, other stridulations were registered, possibly from species of orthoptera or hemiptera. when the tapes were analyzed in the laboratory, it was verified that there was no overlap among the species' calling songs, in such a way that each species had their particular band of frequencies, avoiding interespecific acoustic competition.
Varia??o sazonal do gaivot?o (Larus dominicanus) durante o ano de 2005 no estuário de Cananéia-Iguape-Ilha Comprida, S?o Paulo, Brasil
Barbieri, Edison;
Biota Neotropica , 2008, DOI: 10.1590/S1676-06032008000200011
Abstract: this work analyzed larus dominicanus's abundance and its seasonal variation along 2005 at cananéia-iguape-ilha comprida estuary, southern s?o paulo, brazil. the gulls were found throughout the year at the study area. censuses were made from january to december 2005, on a weekly basis. a total of 48 census were realized in each five areas of the estuary. the results show the l. dominicanus is a common species at the estuary and the number of individuals varied among the sites. the lowest numbers were found in the winter, agreeing with the nesting season of the local population. during late summer and early spring the numbers increased.
Varia??o sazonal e abundancia de Rynchops niger no estuário de Cananéia-Iguape-Ilha Comprida, S?o Paulo
Barbieri, Edison;
Biota Neotropica , 2007, DOI: 10.1590/S1676-06032007000200002
Abstract: this work aims to make available basic information about the occurrence and abundance of the black skimmer in the cananéia-iguape-ilha comprida estuary of s?o paulo. black skimmer are found throughout the year at the study area. censuses were made from january to december 2005, on a weekly basis. a total of 48 censuses were completed in each of five areas in the estuary. the results show that black skimmer was a common species at the estuary and the number of individuals varied among the sites. the black skimmer was more frequent in the mud flats of the baixio do arrozal (cananéia), in the summer and autumn, in the summer-winter in boqueir?o norte and sul and in the autumn-winter in the baixio of the bogua?u. all the estuary, the population presented accentuated fluctuations along the year, with the largest seasonal abundance in summer, when the production of the anchoviella lepidonstole increase.
Occurrence of plastic particles in procellariiforms, south of S?o Paulo state (Brazil)
Barbieri, Edison;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000200011
Abstract: seabirds ingest plastic particles floating on the surface of the world's oceans. the birds can ingest plastic particles that they mistakenly identify as prey items. alternatively, plastics can be taken up in the stomach contents of prey species. plastic is often passed from parents to chicks in regurgitated food. in this study, individual petrels and albatrosses brought in by the tide onto ilha comprida beach between january 2000 and december 2002 were collected. ilha comprida, a barrier island in southern s?o paulo, brazil, was traversed by car along a transect of 70 kilometers. a total of 110 birds of 10 species were collected and 64.54% had plastic particles in their stomach. frequencies of occurrence were macronectes giganteus (64.28%), thalassarche melanophrys (73.07%), thalassarche chlororhinchos (44.44%), puffinus puffinus (85.71%), puffinus gravis (7.41%), puffinus griseus (63.63%), fumarus glacialoides (33.33%), daption capensis (75%), pachyptila belcheri (33.33%), procellaria aequinoctialis (25%). these results demonstrated the extent of contamination with plastic and the possible harmful effects on seabirds.
Use of metabolism and swimming activity to evaluate the sublethal toxicity of surfactant (LAS-C12) on Mugil platanus
Barbieri, Edison;
Brazilian Archives of Biology and Technology , 2007, DOI: 10.1590/S1516-89132007000100012
Abstract: this study aimed to investigate the toxicological effects of the las-c12 on mugil platanus (mullet). fishes exposed to 1.0 mg.l-1 for 24, 48, 72, 96 and 120 hours presented significant increase in specific routine metabolism. at the concentration of 0.5 mgl-1, the active metabolism presented a decreasing trend from 48 h of exposure on. however, only the consumption averages for 72 h were statistically different from the ones obtained for other periods of exposure. the lowest oxygen consumption in this concentration was observed for 24, 48 and 72 hours of exposure. significant differences between the control and the concentration of 2.5 mgl-1 were observed for the different periods of exposure. it was not possible to measure the consumption of oxygen for 96 and 120 h, because the fishes got tired in less than one minute after they were placed in the respirometer. the time of swimming until exhausted for fish exposed to 2.5 mgl-1 of las-c12 for 24 h was 8 minutes. following 72 hours of exposure to this concentration, the fish got exhausted after 3 minutes.
Concentration of heavy metals in tissues of green turtles (Chelonia mydas) sampled in the Cananéia estuary, Brazil
Barbieri, Edison;
Brazilian Journal of Oceanography , 2009, DOI: 10.1590/S1679-87592009000300007
Abstract: thirty specimens (15 adults and 15 juveniles) of chelonia mydas found in the cananéia estuary in the state of s?o paulo on the southeastern brazilian coast between january 2005 and september 2006, were analyzed the concentrations of cd, cu, pb, mn and ni in liver and kidney samples of adult and juvenile green turtles were determined by flame atomic absorption spectrophotometry.the average cd concentration found in adult livers (0.57μg.g-1) was significantly higher than that in juveniles (0.279μg.g-1). cu concentrations were significantly higher in the liver than in the kidney, and significantly higher in adults (39.9μg.g-1) than in juveniles (20.7μg.g-1) average mn concentrations in liver and kidney did not differ between adults (4.32 and 4.17μg.g-1) and juveniles (4.81 and 3.82μg.g-1), whereas ni concentrations in adults (0.28 and 0.19μg.g-1, respectively) were significantly higher than in juveniles (0.13 and 0.089μg.g-1, respectively). pb concentrations in liver were significantly higher in adults (0.37μg.g-1) than in juveniles (0.06μg.g-1). the concentrations of essential trace elements in chelonia mydas were generally comparable to values reported in other, similar studies. with respect to non-essential metals (cd, pb and ni), chelonia mydas presented lower values than those reported for their northern atlantic counterparts.
O Estado demiurgo: Alberto Torres e a constru??o nacional
Bariani, Edison;
Caderno CRH , 2007, DOI: 10.1590/S0103-49792007000100013
Abstract: a kind of pioneer in brazil of a modality of institution building, alberto torres sceptic about the ability and possibility of action by other agents projected the state as the constructor of the nation and organizer of brazilian society, yet by the author formless because of the transplantation process that started it.

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