Morphological and ecological variations and inter-specific relationships of a red algal genus, Hypnea were investigated in 15 populations belong to 5 species from Oman Sea coasts. In this study, cluster analyses, principal component analysis and Canonical Correspondence Analysis were done. Statistical analyses indicated that characters such as special branches or branchlets, position of tetrasporange and algae habit are the most important diagnostic characters in intera-genus variation. In general two major clusters were formed. The first major cluster comprised H. boergesenii. Second major cluster contains two subclusters. The first subcluster comprised of H. charoides, H. valentiae and H. musciformis. The second subcluster comprised of H. pannosa. Results showed that variation in the cluster one was explained by average of annual salinity and morphological variation and in cluster two was related to average of annual PH, water temperature and impurities.

Introduction: Multiple Sclerosis (MS) is a demyelinating progressive disease which afflicts central nervous system. The cause remains uncertain but various factors such as infection, stress, immune deficiency and environmental factors may contribute to this disease. As a chronic disease with sudden and unpredictable attack, MS results in various stresses in patients’ lives. It seems that the more we know the extent of stress in patients’ lives, the more we can control it. The present study aimed at determining the extent of stress in patients suffering from MS who have referred to MS Association of Iran.Method: A cross sectional study was conducted using sequential sampling to recruit 600 patients suffering from MS. Data were collected through a self-administered questionnaire (Coudron questionnaire). Descriptive statistics and one-way analysis of variance were used to analysis the data.Results: 79.3% of the patients had stressful thought habits and 76.3 % of them had stressful context in their private lives. Results of one-way analysis of variance showed a significant relationship between the amount of stressful thought habits and age (P=0.01), employment status (P=0.00) and duration of disease (P<0.000).Conclusion: Since the findings of this research revealed high stress of MS patients, identifying stress sources to improve their life qualities, providing appropriate education for coping and adapting with chronic disease related stress, seems to be necessary.

Advice, in any kind and purpose, shows the direction of man's thoughts toward the improvement of his life's conditions and obtaining prosperity. Sa'di, the Iranian supreme moral poet, whenever begins to give advice, talks so delicately, tenderly and firmly; his advices have been imitated during his next periods. The question of this article is that some Sa'di Ghazals, contrary to his other works that have made him well known for his teachings and experiences contains sidestepping from taking advice, in these ghazals, he not only avoids advice instead of advising his addressed, but also requests the adviser not to recommend him anymore, because he is involved in an incurable sickness i.e. the madness of love that is not match with the wisdom, and the advice which origins from the wisdom, has no opportunity to affect him. The method of this research is study and analysis; the conclusion is extracting and analyzing verses in which Sa'di avoids frankly any wisdom and taking advice but does not deviate from morality at all and emphasizes that in any case he takes advice except for love in which he cannot accept any recommendation on having patience for his beloved even in return for suffering hardships.