Trinucleus Seticornis and the Upper Bala Beds

JUVENILE GASTROPODS FROM THE UPPER DEVONIAN CEPHALOPOD BEDS AND ADJACENT STRATA OF CENTRAL IRAN

Microgastropod fauna from the Upper Devonian Cephalopod Bed and overlying Lower Tournaisian strata of the original reference section of the Shishtu Formation have been examined. Twenty genera and one unknown genus have been identified. The original aragonite shells have been replaced either by pyrite or fluorapatite

juvenile gastropods from the upper devonian cephalopod beds and adjacent strata of central iran

microgastropod fauna from the upper devonian cephalopod bed and overlying lower tournaisian strata of the original reference section of the shishtu formation have been examined. twenty genera and one unknown genus have been identified. the original aragonite shells have been replaced either by pyrite or fluorapatite

the effect of item modality, note-taking and input source on iranian upper-intermediate efl learners listening comprehension across gender

نقش مهم آزمون مهارت شنیداری در آموزش زبان نیازمند آنست که محققان مطالعاتی را در زمینه عوامل موثر بر عملکرد زبان آموزان انجام دهند. به همین منظور، تحقیق حاضر برآن بوده که تاثیر عواملی چون نوع ارائه سوال، نوت برداری و بومی یا غیر بومی بودن گوینده را بر عملکرد زبان آموزان ایرانی مقطع پیشرفته در آزمون مهارت شنیداری بررسی نماید. در همین راستا و برای بررسی هریک از عوامل ذکر شده، یک آزمون شامل 20 سوال...

Flow through Packed Beds and Fluidized Beds

Chemical engineering operations commonly involve the use of packed and fluidized beds. These are devices in which a large surface area for contact between a liquid and a gas (absorption, distillation) or a solid and a gas or liquid (adsorption, catalysis) is obtained for achieving rapid mass and heat transfer, and particularly in the case of fluidized beds, catalytic chemical reactions. You wil...

Tempestites in a Teapot? Condensation-Generated Shell Beds in the Upper Ordovician, Cincinnati Arch, USA