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V. Delucchi 《BioControl》1961,6(2):109-113
Summary The author proposes to standardize the preparation technique for microhymenoptera. The insects have to be presented for identification
in a dry state, mounted on a minute pin or glued on a heavy paper point (double-mounting). Preference is given to the mounting
on minute pin, as this method has the advantage that a specimen pinned with a minuten may be removed from its support and
each morphological detail easily observed. The minuten is fixed to a short strip of soft material such as polyporus (bracket
fungus); if this is not available, stiff paper may be used. The support with the pinned specimen is then attached to a pin
no. 3 (fig. 1–3). The absence of glue is advantageous, especially in subtropical countries, where the glue is generally destroyed
by bacteria and fungi. When the pins are unavailable for this double-mounting technique, the author proposes to glue the thoracic
pleurae of the insect to the previously folded tip of a heavy paper point (fig. 6). The material for identification may be
preserved in a liquid medium (as alcohol with some drops of glycerine) after a series of individuals have been prepared according
to the double-mounting technique. Also, specimens in excess may be sent dry in a plastic or glass tube between two cellucotton
masses.
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《Comptes rendus de l'Académie des sciences. Série III, Sciences de la vie》1999,322(8):651-655
We have found a relationship between the net absorption of carbon at time t divided by the net absorption of carbon in 24 h (AN(t)/AN(24)) and the incubation duration after sunrise, in surface waters of the western Mediterranean sea. This ratio is quite similar whatever the sample location, the sample depth and the 24-h net-absorption level. Considering this result, we have established a correction factor which may be used to convert primary production rates obtained from incubation durations ≤ 24 h to daily rates (24 h dawn-to-dawn). 相似文献
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《Carbohydrate research》1987,166(1):59-70
The four diastereoisomeric methyl 2,4,6-trideoxy-4-trifluoroacetamido-l-hexopyranosides have been synthesized. Coupling of the corresponding 1-O-acetyl-3-O-benzoyl-l-lyxo and 1-O-acetyl-3-O-p-nitrobenzoyl-l-arabino derivatives with daunomycinone in the presence of p-toluensulfonic acid as catalyst afforded two new anthracyclines. 相似文献
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Summary In this brief work, authors study the five Chalcidids parasites of the olivefly in the mediterranean zone and discuss the
systematic point of view. They modify the generic name (Cyrtoptyx, Pnigalio) and show the existence of the new speciesP. mediterraneus; this name substitutes the other nameE. longulus
Zett which was wrongly given to theDacus's parasite. A table has been done for the rapid identification of the five species of Chalcidids.
Riassunto Nel presente breve lavoro, gli AA. riprendono lo studio dei cinque Calcididi parassiti della mosca delle olive nella zona mediterranea, ne discutono il valore dal punto di vista sistematico, ne modificano la denominazione generica (Cyrtoptyx, Pnigalio) e mettono in evidenza l'esistenza della nuova specieP. mediterraneus, il cui nome sostituisce quello diE. longulus Zett., erroneamente attribuito al parassita delDacus. E'stata compilata una tabella per l'identificazione rapida di queste cinque specie di Calcididi.相似文献
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