Data to the cranial and tooth development of Glis glis orientalis nehring, 1903 (rodentia: gliridae)

Çolak, Ercüment | Yiğit, Nuri | Sözen, Mustafa | Özkurt, Şakir

Proceedings | 2003 | Acta Zoologica Academiae Scientiarum Hungaricae49 ( SUPPL. 1 ) , pp.33 - 38

Thirty specimens of Glis glis orientalis born in captivity were used in this study. In captivity, animals were fed on hazelnuts, chestnut, apple, biscuit, acorn and sunflower seeds under uncontrolled conditions. Cranial and dentition features were examined from 45 days to 1824 days. At the age of 45 days, teeth were not worn, the cusp pattern of P4 was not recognisable, and the cusps of M3 and M3 had not erupted from dentary. In 126 days old, cusp line of M3 and M3 reached M2 and M2, and the cusp of P4 had developed. In 186 days old, tooth had started to wear.

Effects of errors in coordinates on transformation parameters

Kutoglu H.S. | Mekik C. | Akcin H.

Article | 2003 | Journal of Surveying Engineering129 ( 3 ) , pp.91 - 94

In the stage of transformation of global positioning system coordinates to a national coordinate system, the transformation parameters computed show local changes depending upon the selection of common points used in the transformation. The coordinates of the common points in both coordinate frames, however, contain various errors, which result in the local changes mentioned above. In this context, finding out the effects of possible errors in the coordinate components on the transformation parameters and determining which coordinate component influences which transformation parameter will help in developing alternate transformation . . . strategies that can reduce the local effects. For this purpose, first the differential relations between the coordinates and transformation parameters are investigated on the basis of the three-dimensional similarity transformation, and then the degree of influencing-in other words, the effect order-is determined by investigating the relationship between parameter and geographic coordinate component. In this study the height component has been found to be the most affected component among the coordinates, which influences five out of seven transformation parameters Daha fazlası Daha az

Two new varieties of Ctenidium molluscum (Hedw.) Mitt. (Hypnaceae, Musci) for the moss flora of Turkey [Türkiye Karayosunu Florasi için Iki Yeni Varyete]

Uyar G.

Article | 2003 | Turkish Journal of Botany27 ( 3 ) , pp.227 - 229

Two new varieties. Ctenidium molluscum (Hedw.) Mitt. var. condensatum (Schimp.) Britt. and Ctenidium molluscum (Hedw.) Mitt. var. robustum Boul. collected from the western Black Sea region were determined to be new records for the moss flora of Turkey.

Daily Ambrosia pollen concentration in the air of Ankara, Turkey (1990-1999)

Kaplan A. | Sakiyan N. | Pinar N.M.

Article | 2003 | Acta Botanica Sinica45 ( 12 ) , pp.1408 - 1412

The airborne ragweed pollen spectrum was investigated in the air of Ankara, Turkey for a period of ten years (1990-1999) using a Burkard seven-day volumetric recording trap. In our study period, long distance transported Ambrosia pollen has been registered. Daily pollen levels varied from low to high in Burge's system. In last three years, the pollen concentration of Ambrosia showed a clear increasing tendency. Our results prove that ragweed pollen may be an important threat for ragweed sensitive patients in Ankara city in near future.

6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.

Bu site altında yer alan tüm kaynaklar Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.