A Study on Ratio of Loss to Storage Modulus for the Blood Clot

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 567

فایل این مقاله در 6 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_IJE-27-8_001

تاریخ نمایه سازی: 12 آبان 1393

چکیده مقاله:

In this study, the rheology of blood clot is measured with the help of rotational rheometer.Several shear strains (0.5, 1 and 2%) are applied with two frequencies (5 and 10 Hz) from theincipient time of clot formation and the response of the sample is measured in the form of shearstress and the phase lag which is interpreted with storage and loss moduli. In this study the ratioof loss to storage modulus is studied and the blood clot gel-point as the transition fromviscoelastic fluid to viscoelastic solid is investigated. By increasing the frequency, tan delta decreases before the gel-point and increases after the gel-point which indicates the viscoelasticfluid and viscoelastic solid behaviour,respectively. Moreover, by increasing the shear strain, tandelta varies with lower rate at luidic stage (Ra1 and Ra3) and with higher rate at solid stage(Ra2 and Ra4). It is also shown that increasing the shear strain causes a delay on gel-pointformation

کلیدواژه ها:

Blood ClotLoss to Storage Modulus RatioGel-point

نویسندگان

s Soleimani

Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering

g Pennati

Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering

g Dubini

Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering