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  • Author or Editor: M. Asaad x
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Abstract

This paper represents an attempt to extend and improve the following result of Berkovich: Let G be a group of odd order. Let G=G 1 G 2 such that G 1 and G 2 are subgroups of G. If the Sylow p-subgroups of G 1 and of G 2 are cyclic, then G is p-supersolvable.

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Abstract  

Let G be a finite group. For a finite p-group P the subgroup generated by all elements of order p is denoted by Ω1(p). Zhang [5] proved that if P is a Sylow p-subgroup of G, Ω1(P) ≦ Z(P) and NG(Z(P)) has a normal p-complement, then G has a normal p-complement. The object of this paper is to generalize this result.

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Let G be a finite group. A subgroup H of G is called an
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-subgroup in G if N G(H) ∩ H gH for all gG. A subgroup H of G is called a weakly
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-subgroup in G if there exists a normal subgroup K of G such that G = HK and HK is an
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-subgroup in G. In this article, we investigate the structure of a group G in which every subgroup with order p m of a Sylow p-subgroup P of G is a weakly
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-subgroup in G, where m is a fixed positive integer. Our results improve and extend the main results of Skiba [13], Jaraden and Skiba [11], Guo and Wei [8], Tong-Veit [15] and Li et al. [12].
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Abstract  

Iodination of meta-iodobenzylguanidine was carried out at optimum conditions. The labeling yield at these conditions was more than 95%. Further purification of the prepared compound increased the radiochemical purity to more than of 99.5%, this high purity was revealed in the quality of the images resulting from the use of the prepared compounds.

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Abstract

Purpose

To investigate the levels of 5-HT (serotonin, 5-hydroxytryptamine) and 5-HIAA (5-hydroxyindolacetic acid) in the aqueous humor and plasma of subjects with primary open-angle glaucoma (POAG) and to correlate their concentrations with the severity of glaucoma.

Methods

Thirty-five patients with POAG and 30 patients with senile cataract (control group) of matched age and gender were included in the study prospectively. Aqueous humor samples were obtained by paracentesis from glaucoma and cataract patients who were undergoing elective surgery. Aqueous humor and corresponding plasma samples were analyzed for 5-HT and 5-HIAA levels by high performance liquid chromatography with electrochemical detection.

Results

5-HT and 5-HIAA levels were significantly higher in the aqueous humor of POAG patients than in that of the comparative group of cataract patients. There was no significant difference in the 5-HT and 5-HIAA levels in plasma of POAG and cataract patients. A positive correlation was found between 5-HT and 5-HIAA in the aqueous humor of POAG patients. The 5-HT turnover (5-HIAA/5-HT) was higher in POAG than in cataract patients, but the difference was not significant. No significant correlation was found between levels and severity of visual field loss.

Conclusion

Increased levels of 5-HT and 5-HIAA aqueous humor may be associated with POAG.

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