870 resultados para Reverse osmosis


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5 Silver coin set in olive-wood box with certificates. Obverse: 25 Silver Lirot coin. In the lower part big emblem of the State of Israel. Reverse: Five pomegranate flowers round a five-pointed star.

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3 pieces commemorative coin set in a box. 2 silver coins, 1 gold coin. Obverse: 25 Lirot silver coins, 500 Lirot gold coin. In the center the state emblem of the State of Israel. Reverse: Portrait of David Ben-Gurion.

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Nipah virus causes periodic livestock and human disease with high case fatality rate, and consequent major economic, social and psychological impacts. Fruit bats of the genus Pteropus are the natural reservoir. In this study, we used real time PCR to screen the saliva and urine of P. vampyrus from North Sumatera for Nipah virus genome. A conventional reverse transcriptase (RT-PCR) assay was used on provisionally positive samples to corroborate findings. This is the first report of Nipah virus detection in P. vampyrus in Sumatera, Indonesia.

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Top-predators can play important roles in terrestrial food webs, fuelling speculation that top-predators might be used as biocontrol tools against invasive mesopredators. Feral cats are believed to be largely responsible for the current declines of native fauna across tropical northern Australia, where substantial beef cattle production occurs. Dingoes are known to impact cattle production there and are predicted to impact native fauna also. However, dingoes are forecasted to curtail the impacts of cats and reverse native fauna declines. We review (1) empirical studies investigating the relationships between dingoes and cats, and dingo control and cats, (2) records of cat remains in dingo diets, and (3) historical records of lethal dingo control using 1080-poisoned baits across Australia between 1999 and 2008 to show how two naturalised invasive species can interact in dynamic agro-ecological landscapes. From the 35 studies assessed, most reported no detectable relationship between dingoes and cats; negative or positive relationships were seldom detected. Dingoes do not appear to exclude cats beyond fine scales, but may alter cat activity periods under certain conditions. Cat remains were found in only 0.63 % of over 31,000 dingo diet records. Lethal dingo control occurs (in varying degrees) across about two-thirds of Australia and does not appear to substantially influence dingo-cat relationships. We conclude that the presently available data provides little evidence that bolstering dingo populations will reduce the impacts of cats. Much more work is needed to identify situations where top-predators might be used as effective biocontrol tools against invasive mesopredators in agro-ecological systems.

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Silver 10 Lirot coin. Reverse: Early American Hanukkah Lamp.

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Silver 10 Lirot coin. Obverse: marked with "Star of David" Reverse: Early American Hanukka Lamp.

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Silver 10 Lirot coin and pin. Obverse: 10 Lirot coin. Reverse: Sun behind bars. Pin: Same as the coin's reverse.

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One silver 10 Lirot coin and one pin. Obverse: 10 Lirot coin. Reverse: Sun behind bars. Pin: Same as reverse side of the coin.

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Silver 10 Lirot coin. Obverse: 10 Lirot coin, emblem of the State of Israel. Reverse: Two arches and inscription.

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Silver 10 Lirot coin. Obverse: On the upper left nominal value 10 Lirot. Underneath the emblem of the State of Israel Reverse: 5 silver Shekalim minted in Jerusalem during the period of the war of the Jews against the Romans.

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Silver 10 Lirot coin. Obverse: Emblem of the State of Israel. Reverse: Two arches.

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Silver 10 Lirot coin. Obverse: Emblem of the State of Israel. Reverse: Two arches.

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Obverse: Design of the an aircraft in motion from the right to the left. The wings and body suggest a seven branched candelabra. Reverse: In the center, modified 10 Lirot, number 1 is designed like a rocket moving upwards.

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Silver 5 Lirot coin. Obverse: 5 Lirot coin, emblem of State of Israel. Reverse: A Russian Hanukkah lamp

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Obverse: In the center the emblem of the Israel Defense Forces, against a stylized star. Reverse: The Western Wall.