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نمایش تعداد 1-10 از 220
AMS NRM interferences in the Deccan basalts: Toward an improved understanding of magnetic fabrics in flood basalts
مطالعه تأثیر کربنات کلسیم آب مخزن سمپاش بر کارایی علف کش های گلیفوسیت و نیکوسولفورون در کنترل علف های هرز سوروف (Echinochloa crus-galli L.) و گاوپنبه در شرایط گلخانه ای
چکیده
آزمایش تغییر کربنات کلسیم آب مخزن سمپاش به صورت فاکتوریل و در قالب طرح کاملا تصادفی با 6 تکرار (به انضمام 6 گلدان شاهد) به صورت جداگانه برای هر علف هرز طی سال های 88-1387 در گلخانه تحقیقاتی دانشگاه فردوسی مشهد ...
A comparison study on three different radiation detectors used for liquid levelmetry
In this paper, three different radiation detectors (BF3 counter, NE213 and BGO scintillators) and an 241Am–Be isotopic neutron–gamma source have been used for a typical liquid levelmetry. The study shows that the use of the Am–Be source together...
A simple well-logging tool using boronlined sodium iodide scintillators and an 241Am-Be neutron source
A couple of 2-inch by 2-inch right cylinder sodium iodide scintillators and an Am–Be radioisotope neutron source have been used in a neutron porosity well-logging tool to explore the variation of hydrogen contents in a prototype formation. Both...
A quality survey on different shielding configurations of gamma ray detector used with a portable PGNAA system
PGNAA system against both fast and slow neutrons as well as gamma rays emitted by 20Ci Am–Be source. The measurement results show that in contrast with conventional shadow cone in which the shielding material starts with 20 cm heavy metals such as iron...