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Hamzeh Izadi, Rahim Ebadi, Ali Asghar Talebi,
Volume 2, Issue 4 (winter 1999)
Abstract

This research was conducted over a period of one year from the beginning of spring until mid autumn in 1996, during the bloom of all flowering plants in the region, when pollinator bees were collected with insect veil. Some of them were preserved in 80% ethylalcohol and some were dried, coded, kept in insect box and transferred to the laboratory for identification. The collected insects were identified to 7 families and 19 genera as follows 37 species from among them were identified to species level and 40 species were identified to genus level:

 1- Colletidae: Colletes (Colletes sp.)

2- Andrenidae: Andrena (A. thoracica, A. labialis, A. apicata, A. personata, A. erytrogaster, A. kalmiae, Andrena sp.), Melitturga (M. clavicornis, M. sp.)

3- Halictidae: Halictus (H. brunescens, H. senilis, H. squamosus, H. asperulus, H. resurgens), Lasioglossum (L. discum, L. epipygial, L. nigripes, L. villosulum, L. pygmaeum), Nomia (Nomia sp.).

4- Melittidae: Melitta (M. leporina)

5- Megachilidae: Megachile (M. rotundata, M. maritima, M. concina, M. frigida), Chalicodoma (C. georgica, C. rubripes, Chalicodoma sp.), Osmia (O. cornifrons, O. taurus, O. uncinata), Anthidium (A. florentinum, Anthidium sp.)

6- Anthophoridae: Anthophora (Anthophora sp.), Amegilla (A. quadrifasciata, A. albigena, Amegilla sp.), Eucera (E. nitidiventris), Tetralonia (Tetralonia sp.), Xylocopa (X. iranica, X. valga, X. pubescens, Xylocopa sp.), Proxylocopa (P. nitidiventris, P. rufa, Proxylocopa sp.)

7- Apidae: Apis (A. mellifera), Bombus (Bombus sp.)

 A key to the separate genera level and a complete key to the genera level for the Apoidea is produced and presented for each of the above named families collected in the north of Fars province.


E Izadi, M Heidar Pour, A Kabiri Samani,
Volume 12, Issue 46 (1-2009)
Abstract

In this study, the flow characteristics have been investigated by measuring separation zone, surface and velocity profiles over the circular crested side weirs. An equation was proposed for the length of the separation zone using dimensional, statistical and regression analysis. The dimensional analysis showed that the length of separation zone depends on the upstream to the downstream water depth over the side weir, channel width to the downstream water depth and the Froude number. Comparison of the longitudinal and sectional surface profiles showed that the surface profiles at the vicinity of the side weir are non-uniform, due to separation zone close to the side weir. Therefore, the suitable place for measuring the characteristics of flow is along the centre line of the channel. It was observed that the maximum velocity occurred below the surface water which might be due to the secondary flow around the side weir. By increasing the distance far enough from the side weir, the effects of secondary flow were minimized and the velocity profiles tended to be uniform.

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