Viscoelasticity and Birefringence of Low Birefringent Polyesters

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Low loss, low dispersion and highly birefringent terahertz porous fibers

We demonstrate that porous fibers in addition to low loss and high confinement, have near zero dispersion for 0.5–1 THz resulting in reduced terahertz signal degradation compared to microwires. We also show for the first time that these new fibers can be designed, introducing asymmetrical sub-wavelength air-holes within the core, to achieve high birefringence 0.026. This opens up the potential ...

متن کامل

study the effects of low level laser diode on no production and healing of diabetic and cortisone acetate and normal wounded sd rats

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

15 صفحه اول

Precision measurement of modal birefringence of highly birefringent fibers by periodic lateral force.

Applications of single-mode fibers to coherent optical fiber communication systems1 and fiber sensor systems2 require a definite state of polarization along the fiber length. Polarization-maintaining fibers such as elliptically clad3 and stress-applied4 single-mode fibers have a high internal birefringence that exceeds perturbing birefringence and produces linear polarization along the fiber. O...

متن کامل

the effects of keyword and context methods on pronunciation and receptive/ productive vocabulary of low-intermediate iranian efl learners: short-term and long-term memory in focus

از گذشته تا کنون، تحقیقات بسیاری صورت گرفته است که همگی به گونه ای بر مثمر ثمر بودن استفاده از استراتژی های یادگیری لغت در یک زبان بیگانه اذعان داشته اند. این تحقیق به بررسی تاثیر دو روش مختلف آموزش واژگان انگلیسی (کلیدی و بافتی) بر تلفظ و دانش لغوی فراگیران ایرانی زیر متوسط زبان انگلیسی و بر ماندگاری آن در حافظه می پردازد. به این منظور، تعداد شصت نفر از زبان آموزان ایرانی هشت تا چهارده ساله با...

15 صفحه اول

Spindle birefringence of isolated mitotic apparatus: further evidence for two birefringent spindle components.

We studied sea-urchin zygote mitotic apparatus (MA) isolated in hexylene glycol, transferred immediately to a glycerol-dimethylsulphoxide medium, and stored for 2 weeks at room temperature. Treatment with 0-5 M KC1 caused loss of 45% of the birefringence, but microtubules remained intact (as seen electron microscopically in glutaraldehyde-fixed MA), and tubulin was not extracted (as determined ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Polymer Journal

سال: 2000

ISSN: 0032-3896,1349-0540

DOI: 10.1295/polymj.32.411