AIM Some surgeons consider hand held surgical keratometers unreliable. This may be due to incorrect use through not realising that the distance that the keratometer is held from the cornea influences the shape of the image. When a keratometer is held closer to the astigmatic cornea, the elliptical image will appear more circular, particularly for larger degrees of astigmatism. However, the kera...

M e for ec ol on o n o M Me M M M d d di d d cal Ep pid dem m miolo lo lo l l gy and n n B B Bios st t tati ti ti ti tist st st st stic ic ic ic ics, K K Kar r ro o olin in in in inska a a a a In In I I I s s stit t t t tu ut u e Abstract: Background-Previous studies on familial risk of ischemic stroke have supported genetic

The pharmacological approach to the treatment of depression includes a long-term employment of antidepressants, either in the form of monotherapy or as a combination of several antidepressants with various mechanisms of action. Hypericum perforatum L. (St. John's wort) is the only natural antidepressant. Several constituents of the extract, such as hypericin and hyperforin, seem to be important...

The present study has been evaluated the neuroprotective effect of Hypericum perforatum extract on the reaction of astrocytes in mice brain treated with an intraperitoneal injection of 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) (20 mg/kg with 2 hr intervals). Treatment with Hypericum perforatum extract (HPE) resulted in an inhibition of monoamine oxidase-B (MAO-B) activity and reduced ...

Bu çal??mada, de?i?ik tipteki agrega ve ba?lay?c?n?n s?cak kar???m asfalt?n mekanik özelliklerine etkisi deneysel olarak incelenmi?tir. Çal??mada kalker, bazalt dere malzemesi 3 tip kullan?lm??t?r. Kalker Elaz?? ?li Kömürhan Ta? Oca??’ndan, Harput Beton Dere ise Bingöl Genç-Murat Kum-Çak?l Oca??’ndan temin edilmi?tir. Ba?lay?c? Batman Rafinerisi’nden edilen 2 bitümlü ba?lay?c? (B 50/70 B 160/22...

Bu çal??man?n amac?, farkl? su/ba?lay?c? ve kimyasal katk? oran?na sahip yüksek dayan?ml? betonlar?n dayan?m i?lenebilirlik özelliklerini incelemektir. kapsamda çimento dozaj? 400 600 kg/m3, (S/B) oranlar? 0.20 0.30 olan 16 seri beton kar???m? haz?rlanm??t?r. kar???mlar?nda mineral olarak puzolanik aktivitesi silis duman? kullan?lm??t?r. Silis %5 %20 oranlar?nda ile hacimce yer de?i?tirilerek K...

The aerial parts of H. perforatum subsp. perforatum and H. perforatum subsp. angustifolium were investigated for their chemical composition and antimicrobial activity. Spectrophotometric analysis indicated that H. perforatum subsp. perforatum is richer in flavonoids and tannins than the other subspecies. HPLC analysis confirmed the higher yield of flavonoids in H. perforatum subsp. perforatum a...