نتایج جستجو برای: in a wide range
تعداد نتایج: 20401923 فیلتر نتایج به سال:
The discovery of material properties at extremes, which are essential for high energy density physics development, requires the most advanced experimental facilities, theories, and computations. Nowadays, it is possible to model matter in such conditions using state-of-the-art functional theory (DFT) or path-integral Monte Carlo approaches with remarkable precision. However, fundamental computa...
A 2.45-GHz self-adaptive rectifier based on a two-way Gysel power divider (PD) with switch networks (SN), an impedance transform network (ITN), feedback (FN) and two rectifiers is developed in this paper. The SNs ITN are controlled by FN according to output voltages. single-path mode at low level switches two-path high level. It has been simulated, fabricated tested. original input range when e...
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...
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