نتایج جستجو برای: wave parameters

تعداد نتایج: 779811  

Journal: :Coastal Engineering Proceedings 1988

Journal: :Ocean Engineering 2021

Wind-generated waves are often treated as stochastic processes. There is particular interest in their spectral density functions, which expressed some parametric form. Such functions used inputs when modelling structural response or other engineering concerns. Therefore, accurate and precise recovery of the parameters such a form, from observed wave records, important. Current techniques known ...

Journal: :فیزیک زمین و فضا 0
جعفر ولی پژوهشگاه صنعت نفت، مربی عزت اله کاظم زاده پژوهشگاه صنعت نفت، استادیار حسام آلوکی بختیاری پژوهشگاه صنعت نفت، مربی محمد رضا اصفهانی پژوهشگاه صنعت نفت، مربی

the goal of this laboratory study is to investigate the effect of pore shapes on seismic wave velocities in carbonate rocks under reservoir conditions. in this research, 41 core plugs of carbonate rocks from oil fields of the southwest of iran were prepared. the compressional and shear wave velocities were measured in both dry and brine saturated samples under several pressures especially reser...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

2002
C S M Doake H F J Corr K W Nicholls C Stewart

We have collected polarimetric ice sounding radar data on Brunt, George VI and Ronne ice shelves using a vector network analyser as a continuous wave step-frequency radar. Being a wideband phase sensitive instrument, the radar allowed the vectorial nature of the interaction between radio waves and the ice and reflecting surface to be explored. Single crystals of ice are birefringent not only at...

رضا حکمت, , سهیلا طالبی, , محسن موهبتی, ,

Background: Cardiovascular problems including arterial hypertension, coronary artery diseases, congestive heart failure are prevalent among chronic hemodialyzed patients. Ultrafiltration of hemodialyzed patient's serum, which culminating in intravascular volume reduction, is frequently used during hemodialysis. One of the restrictions of the echocardiographic evaluation of the diastolic heart f...

Anil k Srivastava, Nrip K Pankaj, Pawan K Verma, Rajinder Raina, shahid Prawez,

The effects of tramadol on electrocardiogram (ECG), mean electrical axis and respiratory rates were studied in adult kagani goats after intramuscular administration of tramadol at 1 mg/kg b.wt. as a prelude to its clinical use as an analgesic in veterinary practice. The ECG was monitored by standard bipolar leads and discernible electrocardiographic features were observed in lead II. The normal...

Masoud Sadri Nasab Morteza Bakhtiari, Nima Shahni Karam Zadeh Reza Nayebi

Waves are main characteristics of seas that produce by wind. Importance of the study of waves and recognizing the wave climate in the coastal zone management that the waves are the most important influence on the design and implementation of all projects. Wave are main boundary condition in dynamic loading and structural calculations and hydraulic coastal structures. Height of waves are the mos...

Ocean wave is one of the renewable energy resources that these days various devices are used to extract its energy. Oscillating Water Column (OWC) installed on the shore is one of the wave energy absorption systems which has received attention due to its simple structure. Investigation of the pneumatic power is of great importance in such systems as the conversion of wave energy to pneumatic en...

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