Foraminiferal faunal estimates of paleotemperature: Circumventing the No-analog problem yields cool Ice Age tropics

the problem of divine hiddenness

این رساله به مساله احتجاب الهی و مشکلات برهان مبتنی بر این مساله میپردازد. مساله احتجاب الهی مساله ای به قدمت ادیان است که به طور خاصی در مورد ادیان ابراهیمی اهمیت پیدا میکند. در ادیان ابراهیمی با توجه به تعالی خداوند و در عین حال خالقیت و حضور او و سخن گفتن و ارتباط شهودی او با بعضی از انسانهای ساکن زمین مساله ای پدید میاید با پرسشهایی از قبیل اینکه چرا ارتباط مستقیم ویا حداقل ارتباط وافی به ب...

Wetland-dryland Vegetational Dynamics in the Pennsylvanian Ice Age Tropics

Age of Measles immunization in tropics

The ‘cool-tropics paradox’ in palaeoclimatology

Over one thousand lunar transient events have been reported since the 1600s when telescopes were fi rst developed. Astronomer William Herschel during 1783–1787 reported several apparent lunar volcanic emissions: ‘I perceived in the dark part of the Moon a luminous spot. It had the appearance of a red star.’ Four years later Herschel wrote, ‘I perceive three volcanoes ... The third shows signs o...

A culture-based calibration of benthic foraminiferal paleotemperature proxies: delta O-18 and Mg/Ca results

Benthic foraminifera were cultured for five months at four temperatures (4, 7, 14 and 21 C) to establish the temperature dependence of foraminiferal calcite δ18O and Mg/Ca. Two Bulimina species (B. aculeata and B. marginata) were most successful in terms of calcification, adding chambers at all four temperatures and reproducing at 7 and 14 C. Foraminiferal δ18O values displayed ontogenetic vari...