بررسی میزان همپوشانی عوامل مرگ و میر در کشورهای در حال توسعه در پایگاه های اطلاعاتی «pubmed» و «scopus»

Degenerate Four Wave Mixing in Photonic Crystal Fibers

In this study, Four Wave Mixing (FWM) characteristics in photonic crystal fibers are investigated. The effect of channel spacing, phase mismatching, and fiber length on FWM efficiency have been studied. The variation of idler frequency which obtained by this technique with pumping and signal wavelengths has been discussed. The effect of fiber dispersion has been taken into account; we obtain th...

ایجاد پایگاه اطلاعاتی کشورهای در حال توسعه

میزان همپوشانی مقالات سیستم تنفسی در دو پایگاه اطلاعاتی Scopus و Web of Science : گزارش کوتاه

Background: Due to the overlap between the databases of the subject and content, resulting in the purchase of duplication and waste of resources, in this study, the degree of overlap between respiratory system papers indexed in the database, Scopus and Web of Science during the years 2001 to 2010 were examined. Methods: In this survey study, researcher followed by obtaining percent overlap i...

بررسی میزان همپوشانی مقالات قلب و عروق در دو پایگاه اطلاعاتی Scopus وWeb of science در فاصله سالهای 2001-2010

 Background and Aim: The lack of paying attention to overlap between two databases cause purchase of duplicate resources waste of funds. This study examined overlap of articles in the field of cardiovascular which was indexed in Scopus and Web of science databases during years 2001 to 2010.  Materials and Methods: In this study, at first, sub-headings in cardiovascular field from medical...

اثر بربرین در تنظیم آستروسیتهای Gfap+ ناحیه هیپوکمپ موشهای صحرایی دیابتی شده با استرپتوزوتوسین

Background: Diabetes mellitus increases the risk of central nervous system (CNS) disorders such as stroke, seizures, dementia, and cognitive impairment. Berberine, a natural isoquinolne alkaloid, is reported to exhibit beneficial effect in various neurodegenerative and neuropsychiatric disorders. Moreover astrocytes are proving critical for normal CNS function, and alterations in their activity...

اثر بربرین در تنظیم آستروسیتهای Gfap+ ناحیه هیپوکمپ موشهای صحرایی دیابتی شده با استرپتوزوتوسین

Background: Diabetes mellitus increases the risk of central nervous system (CNS) disorders such as stroke, seizures, dementia, and cognitive impairment. Berberine, a natural isoquinolne alkaloid, is reported to exhibit beneficial effect in various neurodegenerative and neuropsychiatric disorders. Moreover astrocytes are proving critical for normal CNS function, and alterations in their activity...