950 resultados para ARAB SPRING


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Selostus: Luomukevätviljapeltojen rikkakasvillisuus 1997-1999

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This report from the University Hygienic Laboratory contains the results of a chlordane study of the Cedar River taken in the spring and summer of 1985 after it was discovered from a routine fish tissue monitoring program in Iowa that it contained levels of chlordane in excess of the FDA action level.

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Des pièges attractifs contenant du foie frais et du foie âgé de 2 et 4 jours ont été utilisés au cours de 9 journées de capture (avril à mai 1999). Parmi les 451 spécimens récoltés, 7 espèces de Calliphoridae ont été identifiées. Les conditions météorologiques, exprimées par la pluie, la température et les radiations solaires, ont une influence signficative sur l'activité des mouches. A l'exception de Lucilia sericata et L. Illustris, les autres espèces montrent une nette préférence pour les pièges contenant du foie de 4 jours. Le sex-ratio est toujours en faveur des femelles et varie de 1.7:1 (L. silvarum) à 18.8:1 (L. illustris).

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Quarterly newsletter produced by the Iowa Department of Blind, about the information and activities that are on going in the department.

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Selostus: Siemenmukuloiden varastointiaikaisen lämpökäsittelyn ja kevätidätyksen vaikutus kolmen perunalajikkeen satoon Lapissa

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Selostus: Aikaisen ja tavanomaisen kasvunsäädekäsittelyn vaikutus kevätviljojen kasvustoon ja satoon

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter on the activities of the University of Iowa Graduate College.

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Newsletter for alumni from the University of Iowa Graduate College.

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Newsletter for alumni from the University of Iowa Graduate College.