یافته‌های جدید در مورد عدم توازن پروستاگلاندین F2a و پروستاسیکلین در گاوهایی که دچار جفت ماندگی می‌شوند

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...

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...

اثر دود اسپند و عنبرنسارا بر جفت ماندگی در گاوشیری

پیش‌بینی میگرن با دو الگوی عدم توازن تلاش- پاداش و عدم توازن تقاضا -کنترل در شغل

Introduction: Migraine is the most common type of chronic headache. Stress can trigger migraine and effect on the duration of migraine attacks. . One of the main reasons of job stress is inappropriate job design. The aim of the current study was to investigate the new cases of migraine regarding models of effort-reward imbalance and demand-control imbalance in job. Methods: Two job designs n...

تنظیم ترشح پروستاگلاندین E2 توسط مهارگران آنزیم های سیکلواکسیژناز ( نوعI و II) و پروستاگلاندین دهیدروژناز در سلولهای تروفوبلاست جفت انسانی

Recent studies in amnion and chorion trophoblasts have shown that glucocorticoids (GC) increase and decrease expression and activity of PGHS and PGDH enzymes respectively. However, the effects of GC on the expression of these enzymes in placental cells (PC) is unknown.           Human placenta were obtained from uncomplicated term p...