نتایج جستجو برای: modal analysis and pipe resonance
تعداد نتایج: 17318098 فیلتر نتایج به سال:
since esp received universal attention to smooth the path for academic studies and productions, a great deal of research and studies have been directed towards this area. swales’ (1990) model of ra introduction move analysis has served a pioneering role of guiding many relevant studies and has proven to be productive in terms of helpful guidelines that are the outcome of voluminous productions ...
short story as an important literary genre in the recent decade is focused by many of young writers and literary critical with searching structure, content , artistic techniques and cognitive phenomenon of these works , we can show quantity of using some parts of storied literature from new literal techniques of the word and also we can show the usage of native, cultural and social foundation...
abstract following innovations in the field of elt, a new topic which has recently attracted a lot of attention is metaphor analysis. although this area of research is still in its infancy in elt, it seems that the idea can shed more light on the puzzle of english language learning and teaching. therefore, the major aim of this study is to analyze language learning and teaching in formal a...
چکیده ندارد.
Hydrogen corrosion of main gas and oil pipelines often leads to accidents. It is necessary assess the life hydrogen-weakened pipes. An inner layer with deteriorated mechanical characteristics formed in them under pressure hydrogen-containing medium. In paper calculation free vibrations such a tube taking into account degradation its material performed. The modeled as bilayer cylindrical shell a...
the ambient vibration measurement is a kind of output data-only dynamic testing where the traffics and winds are used as agents responsible for natural or environmental excitation. therefore an experimental modal analysis procedure for ambient vibration testing needs to base itself on output-only data. the modal analysis involving output-only measurements present a challenge that requires the u...
A 5,000-m-long, 15-in (38-cm) outer-diameter, full-scale pipe was deployed from the large Moon Pool of the Hughes Glomar Explorer (Fig. 1) while a deep-ocean mining system operated from the ship in the North Pacific Ocean in 1976 and 1979. From the standpoint of design as well as operation, one of the most critical parameters in deep-ocean mining and deep-ocean drilling is the behavior of the p...
this study was conducted to investigate the impact of portfolio assessment as a process-oriented assessment mechanism on iranian efl students’ english writing and its subskills of focus, elaboration, organization, conventions, and vocabulary. out of ninety juniors majoring in english literature and translation at the university of isfahan, sixty one of them who were at the same level of writing...
this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...
An electro-mechanical mathematical model of the functioning an optical fiber resonance piezoelectroluminescent (RPEL) sensor with external nonlinear elastic buffer layer has been developed. The is designed to measure distribution spectrum along length dynamic and/or static pressure using a resonant diagnostic method based on results measuring amplitude intensity resulting light flux at output f...
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