Effect of intrinsic microscopic properties and suction on swell characteristics of compacted expansive clays

© 2018 Elsevier Ltd The complex swelling mechanism in expansive clays during moisture ingress can be succinctly explained by an examination of their core mineralogy, microfabric, grain size and suction response. This note has attempted to investigate these influential factors on five different expansive clay samples to enable further understanding of swell behaviour. Laser diffractometry tests were performed on the expansive clays to determine the clay-sized particle structure

Theileriosis and tick infestations in sheep and goats around Kayseri Kayseri yöresinde koyun ve keçilerde theileriosis ve kene enfestasyonlari

This study was conducted on sheep and goats to investigate theileriosis and tick infestations around Kayseri between August 1997 and October 1999. During this period a total of 300 small ruminants consisting of 250 sheep and 50 goats were microscopically examined for Theileria species. Blood smears were prepared from the punctured ear of each animal for microscopic examination. At the same time, ticks were collected from the animals. The smears were stained with 5% Giemsa's stain solution and then examined under microscope with oil immersion objective. Theileria sp. were detected in 46 (18.40%) and 4 (8.00%) of the 250 sheep and 50 goats, respectively. In the field, 80 (32.00%) and 3 (6.00%) of the sheep and goats, respectively, were infested with ixodid ticks. The collected adult ticks were identified as Rhipicephalus bursa, R. turanicus, R. sanguineus, Dermacentor niveus, Hyalomma marginatum, Haemaphysalis parva, Hae. sulcata and Hae. otophila, and the engorged nymphs were identified as Rhipicephalus spp