نتایج جستجو برای: 40 minutes and frequency 0
تعداد نتایج: 17071309 فیلتر نتایج به سال:
BACKGROUND Dentists are always looking ahead for more dimensionally stable material for accurate and successful fabrication of prosthesis in this competitive world. Arrival of newer materials and increased material market puts dentists in dilemma for selection of material. AIM The study evaluated the effect of variations in time of pour and temperature on dimensional stability of three brands...
growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...
response surface methodology (rsm) was used in order to find the suitable conditions of ultrasonic treatment for achieving the maximum inactivation rate and anthocynins content during ultrasonic processing of red grape juice. temperature in 3 levels (25 - 37.5 - 50°c), time in (20 – 30 - 40 minutes) and frequency (0 - 67.5 – 135 khz) were parameters which effects were studied. experiments were ...
the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...
plagiarism in esl/efl learning contexts has been established as a dynamic and multi-layered phenomenon and has become a topic engaging many researchers in a heated debate in recent years. comparisons of student-generated texts with their source texts have shown that students rely on source texts in their writings and copying is a major strategy used by both l1 and l2 writers. in our country a...
abstract the present study is concerned with the syntactic deviation in hafezs poetry. poems are known to be accompanied with various linguistic deviations. these deviations may be phonological, morphological and/or syntactic. the relatively high frequency of the cases of the syntactic deviation in hafezs poems makes this rhetorical feature as a main characteristic of his poetry. this thesis, ...
BACKGROUND Cord blood lactate at birth is a marker of antenatal hypoxia, and is comparable to pH as a prognostic tool. OBJECTIVE To determine, by a prospective observational study, the effect of delayed sampling from arteries and veins that were double clamped to isolate the blood from the placenta (clamped), and from vessels that were not isolated from the placenta (unclamped). METHODS Pai...
Blast furnace slag properties at different grinding times and its effect on foam concrete properties
The paper presents the blast furnace slag properties at different grinding times by dry method. process of fine is prepared (10 minutes, 20 30 40 minutes). results indicated that main component in BFS amorphous structure defined about 25÷35 degrees (with appearance Akermanite 31.1, Calcite 29.2 and Aragonite 26.4). also showed compressive strength activity index increased significantly after ex...
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