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| Registros recuperados: 11.818 | |
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| Becquey, S; Gersonde, R. |
| Estimates of summer sea surface temperatures (SSSTs) derived from planktic foraminiferal associations using the Modern Analog Technique and combined with isotopic analyses and determination of ice-rafted debris, mirror the Pleistocene evolution of the planktic Subantarctic surface waters in the Atlantic Ocean. The SSSTs indicate that the isotherms that define the modern polar front zone and Subantarctic front, were located at more northerly latitudes (up to 7degrees) during most of the investigated period, which covers the past 550 kyr. Exceptions are during climatic optima in the early Holocene, at marine isotope stages (MIS) 5.5, 7.1, 7.5, 9.3, and presumably during MIS 11.3 when SSSTs exceeded modern values by 1degrees-5degreesC. The close similarity... |
| Tipo: Text |
Palavras-chave: Subantarctic zone; Sea surface temperatures; Planktic foraminifers; Ice rafted debris; Climate. |
| Ano: 2003 |
URL: https://archimer.ifremer.fr/doc/00224/33501/31947.pdf |
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| Horng, Cs; Roberts, Ap; Liang, Wt. |
| We present a 2.14-Myr astronomically tuned relative geomagnetic paleointensity record from the western Philippine Sea. Pseudosingle-domain titanomagnetite is the only magnetic mineral identified and variations in titanomagnetite concentration fall well within the accepted limits for relative paleointensity variations. No significant temporally persistent periodicities are observed in wavelet analyses of the paleointensity time series or in the rock magnetic parameters used for relative paleointensity normalization. This suggests that our paleointensity record is largely free of rock magnetic or lithological artefacts and that it represents a reliable record of geomagnetic behavior with no evidence for modulation of the field at Earth orbital periods. The... |
| Tipo: Text |
Palavras-chave: Geomagnetic paleointensity; Magnetostratigraphy; Spectral analysis; Wavelet analysis; Philippine Sea. |
| Ano: 2003 |
URL: https://archimer.ifremer.fr/doc/00224/33554/31978.pdf |
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| Costa,Rodrigo V. da; Casela,Carlos R.; Zambolim,Laércio; Ferreira,Alexandre S.. |
| A antracnose, causada pelo fungo Colletotrichum graminicola, é a mais importante doença da cultura do sorgo (Sorghum bicolor) no Brasil. São reconhecidas três fases da doença: a antracnose foliar, a fase de podridão do colmo e a antracnose da panícula e dos grãos, sendo a fase foliar, a mais destrutiva, normalmente observada a partir de 30 a 40 dias após a emergência no estádio de desenvolvimento 4,0. O fungo Colletotrichum graminicola pode sobreviver por até 18 meses na ausência do hospedeiro, como micélio e conídios em restos culturais na superfície do solo, em hospedeiros alternativos e ainda como micélio, conídios e microesclerócios em sementes infetadas. Microesclerócios são produzidos em colmos secos de cultivares suscetíveis, sendo a sua... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colletotrichum graminicola; Sorghum bicolor. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000400001 |
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| Cooper, Ian M.. |
| One of the outcomes of the merger of the Farm Management Society of Central South Australia and AARES was a project to record the history of the Australian Farm Management Society. As part of this project it was decided to develop a bibliography of Australian Farm Management Research and Publication. It has been produced as a web site to facilitate further development. One of the problems is what to include or exclude from the bibliography. This hinges on one's definition of "Farm Management". The approach taken will be explored and progress to date reported. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Bibliography; Farm Management; Online; Farm Management. |
| Ano: 2003 |
URL: http://purl.umn.edu/24357 |
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| Gonzalez,L.E.; Parada,M.A.; Tucci,S.; Teneud,L.; Overstreet,D.H.; Hernandez,L.. |
| Breeding for high and low hypothermic responses to systemic administration of a serotonin1A (5-HT1A) receptor agonist (8-hydroxy-2-(di-n-propylamino)tetralin, 8-OH-DPAT) has resulted in high DPAT-sensitive (HDS) and low DPAT-sensitive (LDS) lines of rats, respectively. These lines also differ in several behavioral measures associated with stress. In the present microdialysis study we observed that basal 5-HT concentrations in the prefrontal cortex and dorsal hippocampus did not differ significantly between HDS and LDS rats. Thus, behavioral differences between the HDS and LDS lines might not be attributed to differences in basal 5-HT release. However, both lines had lower basal levels of 5-HT release than their randomly bred control group (random... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brain microdialysis; Serotonin; 5-HT1A rat lines; Fenfluramine; 8-OH-DPAT. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000200014 |
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| Theesfeld, Insa; Boevksy, Ivan. |
| During the post-socialist transition period, the Bulgarian irrigation facilities deteriorated to a large extent and no longer meet the needs of the new landowner and agricultural production structure. The Bulgarian government therefore enacted two new laws to encourage collective action and to establish water user associations in order to achieve sustainable water management. In this article, we will question the frequent argument that water user associations could easily be established in Bulgaria, because they are rooted in the water syndicates. Empirical findings from village case studies reveal that limited collective memory exists today about former water syndicates' rules-in-use and patterns of action. We will explain this breach of tradition by the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Political Economy. |
| Ano: 2003 |
URL: http://purl.umn.edu/18899 |
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| Garcia, Roberto J.. |
| The Uruguay Round of GATT introduced market disciplines to international trade in agricultural commodities. However, in cases where countries negotiated the right to limit market access, support domestic production at high levels and subsidize exports, the spirit of the WTO rules have been violated. The Norwegian meat market (beef, pork, lamb and mutton, and chicken) situations are studied in terms of the policy implications and WTO commitments. If Norway's policy objective is to target some level of production that satisfies its non-trade concerns, then semi-decoupled income support could be an improvement over a policy mix that simultaneously restricts market access, provides domestic support and applies export subsidies. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Norway; Meat; Market access limitations; Domestic support; Export subsidies; International Relations/Trade. |
| Ano: 2003 |
URL: http://purl.umn.edu/25915 |
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| Rachid,Acir; Rezende,Lucila Stange; Moura,Suzelle Freitas de; Loffy,Paulo C.; Magalhães,Francisco Luiz Gomide M.. |
| Histoplasma capsulatum, a ground fungus, can infect humans, normally in endemic areas; the resulting disease can be asymptomatic or it can have a benign development, but in rare cases it can develop into a serious clinical condition and can even be fatal. Its most characteristic initial location is in the lungs, resembling tuberculosis, often accompanied by mediastinitis and an exuberant fibrotic response. The spread of this infection can be caused by the concomitance of another illness that alters the immunological balance. Sometimes such an association is not clear. Therefore, disseminated histoplasmosis is defined as a clinical condition where the fungus is present in more than one location. Common variable immunodeficiency is characterized by a... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Disseminated histoplasmosis; Common variable immunodeficiency; Immunoglobulins. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000400007 |
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| Registros recuperados: 11.818 | |
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