✦ LIBER ✦

Apparatus and method to determine the anisotropic state of oriented polymer materials by means of thermophysical parameters

✍ Scribed by V. A. Voronkov; L. A. Sukhareva; P. I. Zubov

Publisher: Springer US
Year: 1979
Tongue: English
Weight: 332 KB
Volume: 37
Category: Article
ISSN: 1573-871X
DOI: 10.1007/bf00860996

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Prediction of the stress-strain state of

Prediction of the stress-strain state of an oriented partially crystalline polymer material by methods of mechanics and photomechanics

✍ G. D. Fedorovskii; N. S. Konakova 📂 Article 📅 1985 🏛 Springer US 🌐 English ⚖ 380 KB

Determination of the structural paramete

Determination of the structural parameters of aqueous polymer solutions in the molecular, partially aggregated, and particulate states by means of FFFF/MALLS

✍ Heiko Thielking; Werner-Michael Kulicke 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 156 KB 👁 2 views

Flow field-flow fractionation FFFF has a separation range from f 10 to 10 12 g mol y1 in terms of molar mass and only requires that the sample be Ž . soluble or dispersable in some carrier liquid. By coupling this technique with a Ž . multiangle laser light-scattering photometer MALLS , it becomes p

Acute and Chronic Toxicity of Veratrum V

Acute and Chronic Toxicity of Veratrum Viride††The Veratrum viride studied was the whole-powdered drug marketed by Irwin, Neisler & Co. under the name, Vertavis. The work reported herein was supported by a grant from this firm. The batch of powder used in these experiments was stated by the manufacturer to have been assayed biologically by the Craw method on Daphnia magna. One Craw unit of the material studied was stated to be 15.6mg. With regard to this assay, Mr. R. O. Craw has been so kind as to allow us to publish a brief explanation: A reference lot of Yerolrum oirid; powder was set-aside as a standard and a 10% w/v aqueous extract was made of this powder. The average median length of life in 50 assays of 1000 daphnia on immersion in the solution was determined to be 2.22 hours. The daphnia were considered dead when the heart was found to be in systolic standstill on microscopic examination. Succeeding lots of powder were assayed and their potency determined by relating the median length of life of daphnia to 2.22 hours, which is one unit. Twenty assays of 10 animals each were used on each lot of powder.‡‡The authors wish to thank Dr. J. F. A.,McManus of the Department of Pathology for a pathologic report on the tissues, and Mr. James Thomas and Mrs. Bobby E. Teague for technical assistance.

✍ Perdue, Adoline S. ;Bell, Frances ;Starnes, W.R. ;Hitchcock, Philip ;Teague, R.S 📂 Article 📅 1950 🏛 Elsevier ⚖ 346 KB 👁 1 views