نتایج جستجو برای: metamorphism
تعداد نتایج: 2072 فیلتر نتایج به سال:
من أجل أن نحدد ملامح التطور الحاصل فی علم الکلام ـ بعد أن أثبتنا حصوله خلال القرن الثالث والرابع والخامس الهجری ـ قمنا بدراسه هذا الموضوع دراسه مقارنه، فشرعنا بذکر تعاریف عدد من المصطلحات الهامه الوارده فی البحث ثم ذکرنا تبرکاً دور ساداتنا وأئمتنا الطاهرین ? الذین تشرّفت المرحله التاریخیه ـ التی إخترناها لبحثنا ـ بنور وجودهم وفیض حضورهم القدسی، فابتدأنا بالإمام الرضا? وأختتمنا الکلام بذکر ما یتعل...
marbles containing high-pressure mineral assemblage was found from the sanandaj-sirjan metamorphic belt in the nahavand area in western iran. the high-pressure marbles occur as small bodies or lenses within pelitic schist layers and show compositional banding of carbonate- and silicate- rich bands. textural analysis revealed two metamorphic stages. the early stage is testified by relicts of ...
Contact metamorphism in the Shahindezh Metamorphic Core (SMC), which is occurred due to intrusion of Pichaghchi granodiorite during Laramian orogeny (Upper Cretaceous), is studied here. The well deve loped mineral parageneses at the aureo le is quatz + plagioclase + biotite + cordierite ± chlorite ± K-feldspar ± muscovite ± andalusite ± sillimanite ± garnet. Pressure and temperature of the...
Mantle peridotites are one of the most important rock units of Jandaq ophiolite that are affected by numerous,phases of dynamic and static serpentinization, and metamorphism. The main part of mantle peridotites is lherzolite. This ophiolitic association is covered by Paleozoic metamorphic rocks that are schist and marble. All olivines are changed to serpentine. Most of orthopyroxenes are b...
Nowadays viruses use polymorphic techniques to mutate their code on each replication, thus evading detection by antiviruses. However detection by emulation can defeat simple polymorphism: thus metamorphic techniques are used which thoroughly change the viral code, even after decryption. We briefly detail this evolution of virus protection techniques against detection and then study the METAPHOR...
reflect the dewatering of structurally lower levels after nappe emMuscovite and biotite dehydration-melting reactions near the peak placement. If so, then nappe emplacement occurred at T~475°C. of metamorphism played a significant role in the reaction and fluid history of the Rangeley Formation in southwestern New Hampshire, USA. Evidence for in situ melting includes: (1) the consistency among ...
In this modern era a great deal of metamorphism is observed around us which eventuate due to some minute modifications and innovations in the area of Science and Technology. This paper deals with the application of a meta heuristic optimization algorithm namely the Cuckoo Search Algorithm in the design of an optimized planar antenna array which ensures high gain, directivity, suppression of sid...
Out Performance Of Cuckoo Search Algorithm Among Nature Inspired Algorithms in Planar Antenna Arrays
In this modern era a great deal of metamorphism is observed around us which eventuate due to some minute modifications and innovations in the area of Science and Technology. This paper deals with the application of a meta heuristic optimization algorithm namely the Cuckoo Search Algorithm in the design of an optimized planar antenna array which ensures high gain ,directivity, suppression of sid...
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