The tufa deposits in the Kurkur–Dungul area, southern Egypt, date from marine isotope stage (MIS) 11 to MIS 1. Springs across region were active during glacial periods (with sea-level below –50 m), reflecting changed atmospheric circulation over Indian Ocean, as well peak interglacial periods. During times of low sea-level, reduced Indonesian throughflow promoted formation an Ocean Warm Pool, a...

Based on the comparison between U/Th dates of samples obtained by different authors and trend 18O/16O ratios in MIS 4-3-2 interval, this short note investigates relationships deposition calcareous tufa surface temperature changes. The data analysis indicates that is decidedly favoured with rising temperatures, as happened repeatedly during abrupt thermal rises Dansgaard-Oeschger events. above o...

Apurinic/apyrimidinic (AP) sites, a prominent type of DNA damage, are repaired through the base excision repair mechanism in both prokaryotes and eukaryotes and may interfere with many other cellular processes. A full repertoire of AP site-binding proteins in cells is presently unknown, preventing reliable assessment of harm inflicted by these ubiquitous lesions and of their involvement in the ...

وراثت مقاومت سفیدبالک گلخانه، Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae)، به دو ترکیب ایمیداکلوپرید و کلرپایریفوس مورد مطالعه قرار گرفت. در این پژوهش، از جمعیت فیلستان ورامین (FL) عنوان والد مقاوم فردیس کرج (FR) حساس استفاده شد. مقدار ترتیب حدودا 62/13 91/14 برابر بود. عدم وجود اختلاف معنی‌دار LC50 روی تلاقی‌های F1 (R♂×S♀) Fʹ1 (R♀×S♂) نشان داد که T. نوع اتوزومی (غیرجنسی) است. ه...