Making Evolution an O er It Can ' t Refuse : Morphology and the
نویسندگان
چکیده
منابع مشابه
Probing into morphology evolution of magnesium ethoxide particles as precursor of Ziegler-Natta catalysts
Mg(OEt)2 with spherical morphology is one of the most important precursors for the preparation of industrial Ziegler-Natta catalysts. In the present article, morphology evolution of Mg(OEt)2 particles is studied in the course of the synthesis. The morphology of Mg(OEt)2 particles is observed throughout the process by SEM. The results show that Mg(OEt)2 particles are formed through i) seed gener...
متن کاملخودداری از کمک به مصدومین و مسؤولیتهای ناشی از آن
To help the injured and eliminate physical risks is one of the issues that the legislator has emphasizes on it as a moral duty and has considered its violation as a crime. In this context the physician is exceptional, because not only the legislator has determined his/her responsibility but also the physician has taken over this duty as an ethical principle and he / she do the best efforts for ...
متن کاملPatterns of flow evolution in the central area of the Romanian Plain, Case study: the Calnistea Catchment (Romania)
This paper seeks to emphasize the flow variability in the Calnistea catchment by analyzing the local physiographic factors. The research has shown that the amount of precipitation that falls to the ground is low, the rocks in the region are soft, but highly permeable, gradients are gentle in most of the territory and vegetal cover is sparse and therefore cannot hold important amounts of water. ...
متن کاملبررسی اندازه و ریخت شناسی بلورهای زئولیت NaA بخش I- اثر تغییر نسبت واکنشگرها در سنتز
Crystal size and morphology of zeolite NaA have an important role in its specific use in the industries. Thus, investigation of parameters which influence crystal size and morphology of this compound during the synthesis is very important. Parameters such as intensi ty of mixing, temperature and aging time of the gel preparation, crystallization temperature and composition ratios are I"m...
متن کاملMorphological, structural and photoresponse characterization of ZnO nanostructure films deposited on plasma etched silicon substrates
ZnO nanostructure films were deposited by radio frequency (RF) magnetron sputtering on etched silicon (100) substrates using dry Ar/SF6 plasma, at two etching times of 5 min and 30 min, and on non etched silicon surface. Energy dispersive X-ray (EDX) technique was employed to investigate the elements contents for etched substrates as well as ZnO films, where it is found to be stoichiometric. Su...
متن کامل